With Additional Reflector (e.g., Serial Reflections, Etc.) Patents (Class 359/633)
  • Publication number: 20140055866
    Abstract: An image-partitioned display device for virtual image is disclosed. The display device comprises an image display unit, a refractive element, and a virtual image generation module. The refractive element is disposed between the image display unit and the virtual image generation module. Firstly, the image display unit generates at least one image, and then the refractive element refracts and partitions the image into a plurality of sub-images. Finally, the virtual image generation module receives lights of the sub-images to generate a large area virtual image or a plurality of enlarged virtual images. A volume of the virtual image generation module is reduced and all kinds of display information are provided by the image-partitioned technology.
    Type: Application
    Filed: December 11, 2012
    Publication date: February 27, 2014
    Applicant: AUTOMOTIVE RESEARCH & TEST CENTER
    Inventors: Shun-Wen CHENG, Chih-Bin CHIANG, Jih-Tao HSU
  • Patent number: 8659509
    Abstract: Disclosed is a method for controlling a cartridge of a welding helmet having a function to display a welding operation time, which can protect the welder's face from intense light generated during a welding or cutting operation and also, enable automated light transmittance adjustment and operation time setting on a per operation basis, enabling a welding operation to be more efficiently performed. In the method including welding operation, cutting operation, grinding operation and X-mode operation steps, which are automatically performed in sequence according to preset conditions and a light transmittance and operation time of a liquid crystal screen of the cartridge, a control unit calculates an operation time of the liquid crystal screen indicating how long the liquid crystal screen is kept dark, and the calculated operation time is stored in a memory unit so as to be displayed on a display unit in a life mode step.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 25, 2014
    Assignee: Otos Wing Co., Ltd.
    Inventor: Moon Young Huh
  • Publication number: 20140049833
    Abstract: A light blocking member that is a light blocking structure disposed in an exit pupil position can remove in advance a light component of video image light that undergoes unintended reflection to avoid generation of ghost light and allows formation of a satisfactory image. Further, a projection lens and other components form an intermediate image in a prism, and the video image light totally reflected off at least two surfaces of the prism, a third surface, a first surface, and a second surface in this order, passes through the first surface and reaches an eye of a viewer, whereby the prism can be thin and the overall optical system can be compact and lightweight and provide wide angle, bright, high-performance display.
    Type: Application
    Filed: July 24, 2013
    Publication date: February 20, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takahiro TOTANI, Masayuki TAKAGI, Toshiaki MIYAO, Akira KOMATSU, Takashi TAKEDA
  • Patent number: 8654445
    Abstract: The image light entering the image take-out section is reflected by the first reflecting surface and the second reflecting surface in a two-stage manner. It is not only possible to make the light beam with a small total reflection angle out of the image light directly enter the side near to the light entrance section out of each of the reflecting units, but also to make the light beam with a large total reflection angle directly enter the side far from the light entrance section out of each of the reflecting units to thereby make it possible to take out the image light to the outside. Therefore, the image light is emitted as the effective virtual image light for the observer in the condition in which the brightness variation and the picture variation are prevented and a high light efficiency can be obtained.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: February 18, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Takagi, Toshiaki Miyao, Takahiro Totani, Akira Komatsu, Takashi Takeda
  • Patent number: 8649098
    Abstract: A collimating image-forming apparatus comprising a first linear polarizer is disclosed. A first quarterwave plate is disposed adjacent the first polarizer and has its fast and slow axes at substantially 45° to the plane of polarization of the first polarizer. The apparatus further comprises a beam-splitting curved mirror having a convex surface adjacent the first polarizer and facing towards the first quarter-wave plate, a second quarter-wave plate adjacent the concave side of the curved mirror, the second quarterwave plate having its having its fast and slow axes oriented with respect to the corresponding axes of the first quarter-wave plate at angles substantially equal to a first integral multiple of 90°, and a reflective-transmissive polarizing member adjacent the second quarter-wave plate.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: February 11, 2014
    Assignee: Optical Resolutions, Inc.
    Inventors: Frank Ruhle, Paul Weissman
  • Publication number: 20140036361
    Abstract: Disclosed is a light guiding valve apparatus comprising an optical valve, a two dimensional light source array and a focusing optic for providing large area collimated illumination from localized light sources. A stepped waveguide may be a stepped structure, in which the steps may be extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. A two dimensional array of viewing windows may be produced. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays with wide viewing freedom and low cross talk and near-eye displays that are substantially transparent.
    Type: Application
    Filed: May 17, 2013
    Publication date: February 6, 2014
    Applicant: REALD INC.
    Inventors: Graham J. Woodgate, Michael G. Robinson, Jonathan Harrold, Miller H. Schuck
  • Publication number: 20140029106
    Abstract: The present invention relates to a vehicle composite reflection and refraction multi-imaging device including a reflecting surface, a semi-reflecting surface, and a concave lens. At least one image of at least one light source is reflected repeatedly by the semi-reflecting surface and the reflecting surface to form a plurality of visible mirror images on a mirror image side of the reflecting surface. The concave lens is disposed at the viewing side. A viewer at the viewing side views a plurality of visible mirror images at the mirror image side of the reflecting surface through the refracting of the concave lens. The reflected and refracted visible mirror images gradually shrink towards a vertical axis. Visible mirror images do not interfere with one another, and each visible mirror image is clear. The visible mirror images can generate an apparent inward-shrinking 3D effect of depth with levels.
    Type: Application
    Filed: September 4, 2012
    Publication date: January 30, 2014
    Applicant: TYC BROTHER INDUSTRIAL CO., LTD.
    Inventors: Ming-Jhih SHIH, Jin-Hua WU
  • Patent number: 8638483
    Abstract: A video image display device (1) is provided with an ocular optical system (12) that guides video image light from a display element (11) to the pupil of an observer through an ocular prism (21) and at the same time guides ambient light to the pupil of the observer through the ocular prism (21). The eyepiece optical system (12) has reflection planes set in the ocular prism (21) that are provided with three or more planes to fold down three or more times an optical path for the video image light from the display element (11), wherein an HOE (23) is formed on at least one plane of the reflection planes. The video image display device (1) satisfies a conditional equation that properly prescribes the relationship between an incident range of the video image light incident on the HOE (23) formed plane in the ocular prism (21) and a display screen size of the display element (11).
    Type: Grant
    Filed: September 12, 2009
    Date of Patent: January 28, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Keiko Yamada, Yoshie Shimizu
  • Patent number: 8633870
    Abstract: A proposition is to provide a wearable display suitable for enjoying contents including images by plural users simultaneously. To realize the proposition, the wearable display provides an external output unit outputting a signal having the same contents as a signal input to a device to an external device, at an exterior part of an apparatus body including the device making information of contents including images into a state capable of being sensed by a user, and mounting fixtures mounting the device on a head portion of the user.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: January 21, 2014
    Assignee: Nikon Corporation
    Inventor: Masaki Otsuki
  • Patent number: 8625199
    Abstract: A beam modifying unit increases both temporal pulse length and Etendue of an illumination beam. The pulse modifying unit receives an input pulse of radiation and emits one or more corresponding output pulses of radiation. A beam splitter divides the incoming pulse into a first and a second pulse portion, and directs the first pulse portion along a second optical path and the second portion along a first optical path as a portion of an output beam. The second optical path includes a divergence optical element. A first and a second mirror, each with a radius of curvature, are disposed facing each other with a predetermined separation, and receive the second pulse portion to redirect the second portion, such that the optical path of the second portion through the pulse modifier is longer than that of the first portion, and the separation is less than radius of curvature.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 7, 2014
    Assignees: ASML Holding N.V., ASML Netherlands B.V.
    Inventors: Adel Joobeur, Oscar Franciscus Jozephus Noordman, Paul Van Der Veen, Arun Mahadevan Venkataraman
  • Patent number: 8611014
    Abstract: In a slab waveguide which expands an image-bearing pupil into a visible image, reflective edge surfaces are used to redirect once-diffracted light back through the same grating structure. The number of separate grating structures thereby can be reduced to two or even one, compared to three in the prior art.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: December 17, 2013
    Assignee: BAE Systems plc
    Inventors: Mohmed Salim Valera, Michael David Simmonds
  • Publication number: 20130314759
    Abstract: An optical system includes a display panel, an image former, a viewing window, a proximal beam splitter, and a distal beam splitter. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern generated by the display panel. The viewing window is configured to allow outside light in from outside of the optical system. The virtual image and the outside light are viewable along a viewing axis extending through the proximal beam splitter. The distal beam splitter is optically coupled to the display panel and the proximal beam splitter and has a beam-splitting interface in a plane that is parallel to the viewing axis. A camera may also be optically coupled to the distal beam splitter so as to be able to receive a portion of the outside light that is viewable along the viewing axis.
    Type: Application
    Filed: August 1, 2013
    Publication date: November 28, 2013
    Applicant: Google Inc.
    Inventors: Xiaoyu Miao, Adrian Wong, Babak Amirparviz
  • Patent number: 8576491
    Abstract: In regard to a second direction (combination direction) that is turned back by a reflection at the time of light-guiding, a projective optical system has an emission opening width larger than an opening width of a third reflective surface, such that it is possible to prevent a partial deficiency of image light when the image light emitted from the projective optical system is incident to the third reflective surface from occurring, and thereby it is possible to prevent the occurrence of deficiency of an image or a large variation in brightness.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: November 5, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Takagi, Takahiro Totani, Akira Komatsu, Takashi Takeda, Toshiaki Miyao
  • Patent number: 8570656
    Abstract: The embodiments herein describe how if a narrow wave length notch of light is used to illuminate or create an image source then the beam-splitter is only required to transmit over the narrow wavelength notch. If the concave mirror only reflects the same wavelength notch then all other wavelengths will pass through the mirror and be reflected by the beam-splitter. Each of the embodiments uses a method of optical design wherein certain portions or elements of the optical system are used for multiple purposes and/or transmit certain paths of light transmission in multiple directions. This use of multiple purposes and multiple paths produces embodiments of the invention that are smaller and more robust.
    Type: Grant
    Filed: April 4, 2010
    Date of Patent: October 29, 2013
    Inventor: Paul Weissman
  • Publication number: 20130279017
    Abstract: There is provided an optical device, including a light waves-transmitting substrate having two major surfaces and edges, optical means for coupling light into the means for coupling light into the substrate by total internal reflection, and plurality of partially reflecting surfaces (22a, 22b) carried by the substrate wherein the partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate, and wherein one or more of the partially reflecting surfaces (22a, 22b) is an anisotropic surface.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 24, 2013
    Applicant: LUMUS LTD.
    Inventor: LUMUS LTD.
  • Patent number: 8564883
    Abstract: Image light reflected by a third reflective surface of a light incidence portion is propagated while being totally reflected by first and second reflective surfaces of a light guiding portion, is reflected by a fourth reflective surface of a light emission portion, and is incident to observer's eye as a virtual image. At this time, the number of times of reflection of first image light, which is emitted from a first partial region of an image display device, in the light guiding portion, and the number of times of reflection of second image light, which is emitted from a second partial region of the image display device in the light guiding portion are different from each other, such that it is possible to take in the image light beams from the different partial regions of the image display device with a relatively wide angle of view.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: October 22, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Takahiro Totani, Masayuki Takagi, Toshiaki Miyao, Akira Komatsu, Takashi Takeda
  • Publication number: 20130250431
    Abstract: A near-eye display system includes an image former and first and second series of mutually parallel beamsplitters. The image former is configured to form a display image and to release the display image through an exit pupil. The first series of mutually parallel beamsplitters is arranged to receive the display image from the image former. The second series of mutually parallel beamsplitters is arranged to receive the display image from the first series of beamsplitters, and to release the display image through an exit pupil longer and wider than that of the image former. The second series of beamsplitters has a different alignment and a different orientation than the first series of beamsplitters.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Inventors: Steve Robbins, David D. Bohn
  • Publication number: 20130250430
    Abstract: A near-eye display system includes an image former and a waveguide. The image former is configured to form a display image and to release the display image through a first exit pupil. The waveguide presents a back surface that faces the wearer's eye, and a front surface opposite the back surface. The waveguide is substantially transparent to external imagery received normal to the front surface, and is configured to receive the display image from the image former and to release the display image through a second exit pupil, which is larger than the first exit pupil.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Inventors: Steve Robbins, David D. Bohn
  • Publication number: 20130229716
    Abstract: Techniques are disclosed for creating optical systems and devices that enable a mobile device (e.g., smartphone or other mobile phone, personal media player, and/or other personal electronic device) to be coupled with an optical device (e.g., a riflescope, spotting scope, etc.) such that information shown on the display of the mobile device is viewable to a user looking into the eyepiece of the optical device. Additionally or alternatively, an image from the optical device can be communicated to the mobile device. A modular design can utilize an apparatus configured to encase a mobile device, which can be coupled with the optical device via and optical and/or electrical interface.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 5, 2013
    Applicant: CUBIC CORPORATION
    Inventors: John O. Thomas, Mahyar Dadkah
  • Publication number: 20130229717
    Abstract: There is provided an optical device, including a light waves-transmitting substrate having two major surfaces and edges, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces (22a, 22b) carried by the substrate wherein the partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate, and wherein one or more of the partially reflecting surfaces (22a, 22b) is an anisotropic surface.
    Type: Application
    Filed: April 12, 2013
    Publication date: September 5, 2013
    Applicant: LUMUS LTD.
    Inventor: Yaakov Amitai
  • Patent number: 8508851
    Abstract: An optical system includes a display panel, an image former, a viewing window, a proximal beam splitter, and a distal beam splitter. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern generated by the display panel. The viewing window is configured to allow outside light in from outside of the optical system. The virtual image and the outside light are viewable along a viewing axis extending through the proximal beam splitter. The distal beam splitter is optically coupled to the display panel and the proximal beam splitter and has a beam-splitting interface in a plane that is parallel to the viewing axis. A camera may also be optically coupled to the distal beam splitter so as to be able to receive a portion of the outside light that is viewable along the viewing axis.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: August 13, 2013
    Assignee: Google Inc.
    Inventors: Xiaoyu Miao, Adrian Wong, Babak Amirparviz
  • Publication number: 20130194674
    Abstract: According to one embodiment, a display apparatus projects a light flux including image information toward one eye. The apparatus includes an image formation unit and a projection unit. The image formation unit is configured to emit the light flux. The projection unit includes a projection region limiting unit and a semi-transmissive reflective unit. The projection region limiting unit is configured to limit a width of the light flux emitted from the image formation unit. The semi-transmissive reflective unit is configured to reflect the light flux emitted from the projection region limiting unit. A distance between the semi-transmissive reflective unit and an imaging plane of the light flux is not more than 250 mm.
    Type: Application
    Filed: January 23, 2013
    Publication date: August 1, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Kabushiki Kaisha Toshiba
  • Publication number: 20130194518
    Abstract: The invention relates to a head-up display device, including a projector for generating a light beam carrying information to be displayed, a combiner having a display position for displaying the information in the field of vision of a user, and an optical system defining an optical path between the projector and the combiner when the latter is in the display position thereof, for directing the light beam onto the combiner. The optical system includes a first and a second deflecting mirror. The first mirror is arranged for receiving the light beam from the projector and for sending said light beam to the second mirror, the latter being arranged for sending the light beam over the optical path toward the combiner. An actuation system is provided for adjusting the length of the optical path between the projector and the combiner by positioning the first and second deflecting mirrors.
    Type: Application
    Filed: July 4, 2011
    Publication date: August 1, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Hassan Moussa, Claude Simon, Alain Guidi
  • Patent number: 8493662
    Abstract: A waveguide 60 formed of material 62 allows propagation of image bearing light along a light pathway 64 by total internal reflection of the image bearing light. The layer of material 62 is a light transparent material arranged to allow an observer, not illustrated, to look through the layer of material 62 whilst also arranged to carry image bearing light. A grating element 66 carried within the layer of material 62 is arranged such that impinging image bearing light following the light pathway 64 is either diffracted out of the layer of material 62 as a pupil of image bearing light 68a to 68n or is reflected by either surface 70 or surface 72. The efficiency of the grating element 66 is varied along the length of the layer of material 62 to achieve the desired pupils of image bearing light 68a to 68n along the length of the layer of material 62. This results in a more even brightness of pupils of image bearing light 68a to 68n, as perceived by the observer looking through the layer of material 62.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: July 23, 2013
    Assignee: BAE SYSTEMS plc
    Inventor: Louahab Noui
  • Publication number: 20130155521
    Abstract: A headup display device includes a driving mirror configured to reflect a display light irradiated from an indicator to guide the reflected display light to a windshield of a vehicle. The driving mirror includes a base plate fixed to a bottom surface of a casing, a pair of opposite support plates which are upright on the base plate, a holder pivotally supported by the opposite support plates, a reflective mirror held by the holder, a driving motor configured to pivot the holder to change an angle of the reflective mirror, and a positioning projection provided on the support plate and protruding in a mounting direction of the base plate to the bottom surface of the casing. A holding recessed portion is formed on the casing to allow an insertion of the positioning projection therein and hold the positioning projection at a predetermined position.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 20, 2013
    Applicant: Yazaki Corporation
    Inventor: Yazaki Corporation
  • Publication number: 20130141311
    Abstract: A Head Up Display (HUD), comprising: an image display unit, to generate input images; a virtual image generation unit, to receive said input images and generate at least a virtual image; a rotation mechanism, used to make said virtual image generation unit to change its projection angle, to project virtual images to a plurality of transmission mirrors; and a plurality of transmission mirrors, used to receive said virtual images and reflect them into a large area virtual image. Advantage of said HUD is that, size of lens and mirrors is reduced, so said HUD is miniaturized, while realizing large area image display, such that information frame of vehicle match that of outside view, hereby solving problems of single optical route display device of the prior art, that is only capable of displaying a small area image rather than a large area image.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 6, 2013
    Applicant: AUTOMOTIVE RESEARCH & TEST CENTER
    Inventors: KEVIN HO, JIH-TAO HSU, CHIH-BIN CHIANG
  • Publication number: 20130135749
    Abstract: An image display device includes an image generating device, a light guide unit which includes a light guide plate and first and second deflection sections, and a light beam extension device which extends light incident from the image generating device, along a Z direction when an incident direction of light incident on the light guide plate is set to be an X direction and a direction of propagation of light in the light guide plate is set to be a Y direction, and emits the light to the light guide unit, wherein the light beam extension device includes a first reflecting mirror on which light from the image generating device is incident, and a second reflecting mirror which emits light incident from the first reflecting mirror to the light guide unit, and each of the first and second reflecting mirrors has a light reflecting surface having a sawtooth-shaped cross-sectional shape.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 30, 2013
    Applicant: Sony Corporation
    Inventor: Sony Corporation
  • Patent number: 8446676
    Abstract: Provided is a head-mounted display element, including: a first casing (11) which incorporates therein at least a display element (21), and has a light projection window (11a) for projecting image light from the display element (21); a second casing (12) which incorporates therein an eyepiece optical system (31) with a refractive power, and has a light receiving window (12a) for receiving incident image light projected through the light projection window (11a) and an eyepiece window (12b) for emitting the image light that has passed through the eyepiece optical system (31); and a coupling portion (13) for coupling the second casing (12) to the first casing (11) so as to make adjustable a length of an optical path between the light projection window (11a) and the light receiving window (12a).
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 21, 2013
    Assignee: Olympus Corporation
    Inventors: Ryohei Sugihara, Yoichi Iba, Seiji Tatsuta
  • Patent number: 8446675
    Abstract: An image waveguide includes an in-coupling region for receiving input light into the image waveguide and an out-coupling region for emitting output light from the image waveguide. The in-coupling region includes at least one in-coupling structure orientated to direct the input light into the waveguide for propagation towards the out-coupling region as guided light. The out-coupling region includes a two dimensional array of out-coupling mirror structures orientated to reflect the guided light out of the waveguide as the output light.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: May 21, 2013
    Assignee: Google Inc.
    Inventors: Chia-Jean Wang, Babak Amirparviz
  • Publication number: 20130120825
    Abstract: A heads-up display system is configured for use in a vehicle. The system includes a standard vehicle window (i.e. no special coatings), an image projector, and a vehicle dashboard equipped with a faceted reflective surface. The image projector is configured to project an image onto the faceted reflective surface. The faceted reflective surface is configured to reflect the image from the image projector onto a window surface of the standard vehicle window. The window surface is oriented to reflect the image from the faceted reflective surface toward an occupant. The faceted reflective surface may be disposed within a plurality of troughs separated by a plurality of diffuse reflecting partitions. The plurality of troughs may be configured to shield the occupant from extraneous reflections. The faceted reflective surface may include a plurality of electrically controlled facets. The plurality of electrically controlled reflective facets may be an array of electrowetting cells.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: DAVID K. LAMBERT, FREDERICK F. KUHLMAN, DWADASI H.R. SARMA, KRIS R. STARK, MICHEL F. SULTAN, GAIL M. SYLVESTER
  • Patent number: 8433172
    Abstract: The invention relates to optical guides and more precisely to guides for conveying an image without deforming the same. These guides can particularly be used in the production of ocular-vision optical systems more currently named informative spectacles. The optical guide includes an extraction section made of reflective microstructures at the surface of the guide. The microstructures define prisms having a calculated angle in order to send back the light beam at a given angle relative to the opposite surface enabling the exit thereof from the guide. Advantageously, the cut and the arrangement of said microstructures make them invisible to the eye while generating a large and comfortable image.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 30, 2013
    Assignee: OPT Invent
    Inventors: Benoit Pascal, Dubroca Guilhem, Sarayeddine Khaled
  • Patent number: 8432614
    Abstract: An optical device including a light waves-transmitting substrate having two major surfaces and edges, has optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces (22a, 22b) carried by the substrate. The partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate. One or more of the partially reflecting surfaces (22a, 22b) is an anisotropic surface.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 30, 2013
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Publication number: 20130094092
    Abstract: A head-up display apparatus forms a virtual image of a display image viewed from a viewpoint region by projecting the display image onto a projection face. The apparatus includes a screen member and an optical device. The screen member includes an image formation face that forms the display image. The optical device includes a reflection face, which receives and reflects the display image by the image formation face, to project onto the projection face. The image formation face includes, in a grid array, convex portions and concave portions, which are convex and concave from a virtual reference face and alternated with each other along x axis and y axis. A perpendicular line to the virtual reference face at any position of the image formation face passes through an outside of the reflection face of the optical device.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 18, 2013
    Applicant: DENSO CORPORATION
    Inventor: Denso Corporation
  • Patent number: 8416501
    Abstract: An image display apparatus generates a first light beam and a second light beam corresponding to image signals for the eyes of an observer, and makes the first light beam and the second light beam incident on a reflection surface which makes a reciprocating rotation about a first axis, thereby generating first and second scanning light beams to scan in a lateral direction. Images observable by the eyes of the observer are formed based on the first and second scanning light beams. Control is performed to reflect the first light beam and generate the first scanning light beam while the reflection surface rotates in the first direction of the reciprocating rotation and reflect the second light beam and generate the second scanning light beam while the reflection surface rotates in the second direction opposite to the first direction.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: April 9, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Nakanishi
  • Publication number: 20130083039
    Abstract: A multi optical-route Head Up Display (HUD), comprising: at least an image display unit, to generate at least two input images, and project them respectively to a plurality of relay lenses, which adjusts reflection angle of said input signals and then transmits them to a virtual image generation unit, said virtual image generation unit produces a plurality of virtual images, and transmits them to a plurality of transmission mirrors, which reflects said virtual images to form a large area virtual image. Based on technical contents mentioned above, size of optical elements of lens and mirrors can be reduced drastically, so that said multi optical-route HUD can be miniaturized, to achieve image display range of large area, thus the moving vehicle information frame required completely overlaps outside view, as such effectively solving defects of a conventional single optical-route image display device capable of only providing small area image display.
    Type: Application
    Filed: October 28, 2011
    Publication date: April 4, 2013
    Applicant: AUTOMOTIVE RESEARCH & TEST CENTER
    Inventors: CHIH-BIN CHIANG, KEVIN HO, JIH-TAO HSU
  • Publication number: 20130083404
    Abstract: A virtual image display device has a light guide device in which the half mirror layer (the semi-transmissive reflecting film) of the light guide member is formed on the partial area of the first junction surface, and the second junction surface of the light transmitting member is bonded to the first junction surface in at least the exceptional area. Therefore, it is possible to increase the bonding strength of the first junction surface and the second junction surface, namely the strength of the light guide device composed of the light guide member and the light transmitting member combined with each other even in the case in which the attachment force of the half mirror layer (the semi-transmissive reflecting film) with respect to the first junction surface is not sufficiently strong.
    Type: Application
    Filed: August 31, 2012
    Publication date: April 4, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masayuki TAKAGI, Takahiro TOTANI, Toshiaki MIYAO, Akira KOMATSU, Takashi TAKEDA
  • Patent number: 8405912
    Abstract: A reflection unit reflects an image indicated on an indicator and projects the image on a combiner to indicate a virtual image of the image at a position viewable for a user. A stepping motor rotates the reflection unit to move the virtual image continuously in a predetermined section of the combiner. A control unit controls a driving power of the stepping motor such that a smoothness parameter becomes less than a predetermined value. The smoothness parameter is defined by a division of a difference between the maximum speed of the virtual image and an average speed of the virtual image, when the virtual image moves continuously in the predetermined section, by the average speed.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: March 26, 2013
    Assignee: Denso Corporation
    Inventors: Kazuhide Ohta, Tatsuya Sasaki
  • Publication number: 20130070344
    Abstract: In fabrication of a light guiding unit, a half mirror layer as a reflection film for folding light is covered by a light transmission main body part as a coating member, i.e., a light transmission member, and a hard coating layer is deposited thereon. Therefore, even when the surfaces of a light guide main body part and the light transmission main body part forming the light guiding unit are cleansed as pre-processing of the deposition of the hard coating layer, the situations such that the half mirror layer is separated thereby may be avoided and optical properties of the half mirror layer may not be lost.
    Type: Application
    Filed: August 27, 2012
    Publication date: March 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TAKEDA, Takahiro TOTANI, Masayuki TAKAGI, Akira KOMATSU, Toshiaki MIYAO
  • Publication number: 20130050836
    Abstract: A projection device for use with a night vision goggle system includes: a display source; a projector lens assembly positioned to accept light from the display source and provide a projector optical path having a plurality of projector rays; and a folding device comprising at least two folding surfaces positioned to split an exit pupil of the projector optical path into two or more separated segments. Each folding surface captures and redirects a portion of the projector rays to be parallel and coincident with corresponding rays produced by an external scene which pass through an objective lens of the night vision goggle system.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Applicant: MANUFACTURING TECHNIQUES, INC.
    Inventor: John M. Hall
  • Publication number: 20130021658
    Abstract: An optical system includes a display panel, an image former, a viewing window, a proximal beam splitter, and a distal beam splitter. The display panel is configured to generate a light pattern. The image former is configured to form a virtual image from the light pattern generated by the display panel. The viewing window is configured to allow outside light in from outside of the optical system. The virtual image and the outside light are viewable along a viewing axis extending through the proximal beam splitter. The distal beam splitter is optically coupled to the display panel and the proximal beam splitter and has a beam-splitting interface in a plane that is parallel to the viewing axis. A camera may also be optically coupled to the distal beam splitter so as to be able to receive a portion of the outside light that is viewable along the viewing axis.
    Type: Application
    Filed: July 20, 2011
    Publication date: January 24, 2013
    Applicant: GOOGLE INC.
    Inventors: Xiaoyu Miao, Adrian Wong, Babak Amirparviz
  • Patent number: 8355207
    Abstract: A beamsplitter includes a bifurcated frame, which rotates about a vertical axis, enabling the transmissive properties of an optical element, e.g. etalon, mounted on one arm of the frame, to be tuned as the angle of the optical element is rotated relative to an incoming optical beam. A mirror is mounted on the other arm of the frame intersecting light reflected from the optical element and redirecting the reflected light along a path, which is constant relative to the incoming optical beam.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: January 15, 2013
    Assignee: LightMachinery Inc.
    Inventors: John H. Hunter, Ian J. Miller
  • Publication number: 20130010366
    Abstract: A head-up display device which can be applied to various types of vehicles is provided without causing cost increase. A head-up display device which makes a virtual image to be formed by projecting display light on a windshield of a vehicle includes a housing, an indicator which is provided in the housing, and a reflector which is provided in the housing, and includes a plurality of reflecting surfaces which are arranged in parallel with each other and inclined at the same angle so that the display light which is irradiated from the indicator is reflected by the reflecting surfaces.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 10, 2013
    Applicant: YAZAKI CORPORATION
    Inventors: Go NAKAMURA, Kunimitsu AOKI
  • Patent number: 8339710
    Abstract: A head up display device for a vehicle, includes a display, a reflective member, a stepping motor, and a control part. The reflective member reflects an image displayed by the display and projects the image onto a projection member, thereby displaying a virtual image. The stepping motor rotates the reflective member to adjust a display position of the virtual image. A stabilization point, at which detent torque of the stepping motor is maximized, is defined as a target rotation angle of a magnet rotor. The control part performs normal rotation control that controls amplitude of a drive signal to rotate the magnet rotor to the target rotation angle. After the control part performs the normal rotation control, the control part performs application continuation control that continues application of the drive signal for a predetermined period, with the amplitude of the drive signal at the target rotation angle being maintained.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 25, 2012
    Assignee: Denso Corporation
    Inventor: Kouichirou Torii
  • Patent number: 8305690
    Abstract: A collimating image-forming apparatus comprising a first linear polarizer is disclosed. A first quarterwave plate (14) is disposed adjacent the first polarizer (12) and has its fast and slow axes at substantially 45° to the plane of polarization of the first polarizer. The apparatus further comprises a beam-splitting curved mirror (16) having a convex surface adjacent the first polarizer and facing towards the first quarter-wave plate, a second quarter-wave plate (22) adjacent the concave side of the curved mirror, the second quarterwave plate having its having its fast and slow axes oriented with respect to the corresponding axes of the first quarter-wave plate at angles substantially equal to a first integral multiple of 90°, and a reflective-transmissive polarizing member (24) adjacent the second quarter-wave plate.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: November 6, 2012
    Assignee: Optical Resolutions, Inc.
    Inventors: Frank Ruhle, Paul Weissman
  • Patent number: 8283554
    Abstract: An apparatus for obtaining radiant energy has first and second photovoltaic receivers. A primary curved reflective surface is disposed to reflect incident polychromatic radiation toward a first focal plane. A spectral separator is disposed between the first focal plane and the primary curved reflective surface. The spectral separator has a dichroic separating surface, convex with respect to the incident reflected polychromatic radiation and treated to reflect a first spectral band toward the first photovoltaic receiver and to transmit reflected polychromatic radiation outside the first spectral band. The spectral separator also has a curved separator reflective surface, convex with respect to the light transmitted through the dichroic separating surface and treated to reflect at least a portion of the light transmitted through the dichroic separating surface toward the second photovoltaic receiver.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: October 9, 2012
    Assignee: Corning Incorporated
    Inventors: John H Bruning, Joshua Monroe Cobb, Paul Francis Michaloski
  • Publication number: 20120243104
    Abstract: The present invention discloses a head-up display (HUD) comprising an image display element, a plurality of light sources and a set of light guide components, wherein after a light beam of each light source is projected into the set of light guide components, paths of all light beams are regulated by the light guide components to deflect and concentrate at a driver's viewing range to enhance the light intensity of each light beam, and each area of the image display element is illuminated by a portion of the light sources only, so as to reduce the quantity of required light sources and achieve an overall light and thin effect of the head-up display (HUD).
    Type: Application
    Filed: March 1, 2012
    Publication date: September 27, 2012
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Huan Chen, Wen-Wei Yang
  • Patent number: 8269692
    Abstract: An image display apparatus includes: a left-eye light source (101) that outputs a left-eye image constituting an original image in whole or in part; a left-eye deflection unit (104) that deflects, toward a left eye of the user, the left-eye image outputted by the left-eye light source (101); a right-eye light source (110) that outputs a right-eye image constituting the original image in whole or in part; a right-eye deflection unit (107) that deflects, toward a right eye of the user, the right-eye image outputted by the right-eye light source (110); and a control unit (105, 111) that controls the left-eye light source (101) and the right-eye light source (110) such that the left-eye image and the right-eye image are outputted which are different from each other in at least one of pixel position, image shape, image size, image resolution, and display frame rate so that the user can recognize the original image from the left-eye image and the right-eye image by an image fusion effect.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: September 18, 2012
    Assignee: Panasonic Corporation
    Inventors: Keiji Sugiyama, Kakuya Yamamoto, Akira Kurozuka
  • Patent number: 8264764
    Abstract: A switchable free-spectral-range mode selector is used to change the free spectral range of a free-space delay-line interferometer. The mode selector consists of a rotatable device with at least one transparent plate selected to produce the desired change in the free spectral range of the delay-line interferometer. The device may be rotated in and out of the free-space optical path of on of the interferometer arms. If used as a DPSK demodulator, the device enables operation at multiple predetermined free spectral ranges. In the preferred embodiment, the demodulator includes a 50/50 beam-splitter cube combined with two cavities. The mode selector consists of a plurality of different transparent slabs attached to a rotatable shaft so that any one of the slabs or none may be inserted in the appropriate optical path to obtain the desired FSR mode of operation.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: September 11, 2012
    Assignee: Optoplex Corporation
    Inventor: Yung-Chieh Hsieh
  • Patent number: 8254031
    Abstract: The specification and drawings present a new apparatus and method for providing color separation in an exit pupil expander system that uses a plurality of diffractive elements for expanding the exit pupil of a display in an electronic device for viewing by introducing a selectively absorbing area or areas in the exit pupil expanders.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: August 28, 2012
    Assignee: Nokia Corporation
    Inventor: Tapani Levola
  • Publication number: 20120206817
    Abstract: A thickness of a tapered part provided at the deeper side (?X side) in a light guide direction of a light transmission member is smaller toward the deeper side, and thus, a reflection angle of ghost light that has passed through a fourth reflection surface provided with a half mirror layer and reached the light transmission member gradually becomes smaller within the tapered part and no longer satisfies a total reflection condition, and the light is ejected to the outside in the position diverging from an eye of an observer. That is, the tapered part may prevent the ghost light from reaching the eye and good see-through observation can be realized.
    Type: Application
    Filed: January 23, 2012
    Publication date: August 16, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takahiro TOTANI, Masayuki TAKAGI, Toshiaki MIYAO, Akira KOMATSU, Takashi TAKEDA