With Reflecting Surface Patents (Class 359/833)
  • Publication number: 20080231976
    Abstract: A security device comprises at least two regions, each region comprising a prismatic surface structure defining an array of substantially planar facets. Each region forms a reflector due to total internal reflection when viewed at least one first viewing angle and is transparent when viewed at least one second viewing angle. The said at least one first viewing angle of one region is different from the at least one first viewing angle of the other region. Furthermore, a security device comprising an asymmetrical or truncated prismatic surface structure is located in a transparent area of an article.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 25, 2008
    Inventors: Lawrence George Commander, Christopher John Eastell, Roland Isherwood
  • Patent number: 7428051
    Abstract: The invention relates to a device for the IR-spectrometric analysis of a solid, liquid or gaseous medium. The device includes a process probe, which has a reflection element. The device additionally includes a linear variable filter, at least one detector element, and a control/evaluation unit. At least one light source is also provided, the light of which is coupled into the reflection element via a collimating optics. At least one optical waveguide having a light input section and a light output section is provided. The light is guided via the light output section of the optical waveguide into a defined region of the linear variable filter. The detector element and the linear variable filter are arranged movably relative to one another over approximately the length of the linear variable filter. The control/evaluation unit determines the spectrum of the medium on the basis of the measured values delivered from the detector element.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: September 23, 2008
    Assignee: Endress + Hauser Conducta Gesellschaft fur Mess-u. Regeltechnik mgH + Co. KG
    Inventors: Camiel Heffels, Dirk Steinmueller, Dick Scholten, Peter Lindmueller
  • Patent number: 7397619
    Abstract: A prism sheet having a concave pentagonal structure is disclosed. The prism sheet comprises a base layer, and a prism array disposed on and supported by the base layer. The prism array is composed of a plurality of prisms aligned in parallel and one beside the other. The transversal cross-section of each prism has a shape of concave pentagon, which is symmetrical about a vertical line passing the apex. The interior angle ? of the apex is 30°???120°, the exterior angle ? formed by the upper slant side and the lower slant side is ?<180°, the interior angle ? of the lower vertex formed by the lower slant side and the base is 5°???85° and the length w of the base is 30 ?m?w?100 ?m. Preferably, the interior angle ? of the apex may be 40°???100°, the exterior angle ? formed by the upper slant side and the lower slant side may be 160°???179°, and the interior angle ? of the lower vertex formed by the lower slant side and the base may be 30°???60°. Preferably, the length w of the base may be 40 ?m?w?60 ?m.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: July 8, 2008
    Assignee: Doosan Corporation
    Inventors: Jang-Hwan Hwang, Chong-Pil Pae, Min-Cheol Kook
  • Patent number: 7387391
    Abstract: An optical device that includes an optical element, an imager, and a prism bracket. The optical element includes an optical element having first and second prisms coupled together. The imager is arranged adjacent to the first prism and configured to receive light from or to transmit light to the optical element, wherein the first prism is spaced between the second prism and the first imager. The prism bracket is coupled between the second prism and the first imager to hold the first imager in a desired positional alignment relative to the optical element. The optical device may further include additional sets of an optical element, imager, and prism bracket, wherein all of the sets are coupled to a color light combiner.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: June 17, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Michael K. Domroese, Michael P. Keyes, Jiaying Ma
  • Patent number: 7379674
    Abstract: An optical transmission device for providing stable communication with a partner device by reducing errors in optical axis misalignment. The errors are caused by uneven distribution of the light intensity in a received light beam resulting from atmospheric microscopic fluctuations. One embodiment includes a transmission and receiving unit, which employs two photodetectors, one aligned with and the other misaligned with the optical axis of the optical transmission device. Other embodiments employ a movable means for shifting a photodetector or a lens unit relative to the optical axis of the optical transmission device.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: May 27, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumiaki Usui, Ryuji Ohmuro
  • Patent number: 7372798
    Abstract: An optical element has a dichroic film held between transparent materials which transmits one of first light in a wavelength range of 390 to 425 nm and second light in a wavelength range of 630 to 820 nm and reflects the other light, and a first, a second, a third and a fourth surfaces. In the optical element, a first anti-reflection film for preventing reflection of the first light is formed on the first surface, a second anti-reflection film for preventing reflection of the second light is formed on the second surface, and a third anti-reflection film for preventing the reflection of the first and the second light is formed on the third surface from which the incident light of the first surface and the second surface is emitted. In the third anti-reflection film, reflectance of the second light is larger than that of the first light.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: May 13, 2008
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tomokazu Taguchi, Miyuki Teramoto, Katsuya Fukatani
  • Patent number: 7361250
    Abstract: A method of producing a prism comprising a first prism component and a second prism component that are joined together along a partial reflection plane that is inclined with respect to the optical axis. The method has steps comprising measuring the refractive index for multiple base materials constructing the first prism component and the second prism component and joining the base materials having approximately the same refractive index measurements together along a partial reflection plane in such a manner that the refractive index measurements are associated with specified positions during the course of joining.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 22, 2008
    Assignee: NIDEC Sankyo Corporation
    Inventor: Hiroshi Sakai
  • Patent number: 7350928
    Abstract: A projection display system comprises an illumination device, a prism assembly, a projection lens and a reflective light valve. The prism assembly has a first light incident surface, a first light emitting surface and a second light emitting surface. The first light emitting surface is an optical curved surface. An illumination beam is incident on the light valve after it enters the prism assembly from the first light incident surface. A modulated beam is generated after it is processed through the light valve. Finally, the modulated beam is projected into the projection lens through the prism assembly. Because a surface of the prism assembly is set to be an optical curved surface to replace a lens in the projection lens or the illumination device, a back focal length of the system is shortened and the projection lens or the illumination device is simplified.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: April 1, 2008
    Assignee: Young Optics Inc.
    Inventors: Chia-Chen Liao, Yi-Hao Kang, Chu-Ming Cheng
  • Patent number: 7352512
    Abstract: In accordance with an embodiment of the present invention, an optical system includes two tilted planar elements each having two surfaces for which the sign of the slopes of at least three of the four surfaces that an incident beam encounters are the same and which, when inserted into the path of the incident beam produces an output beam having no angular deviation and essentially no lateral deviation from the incident beam path.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: April 1, 2008
    Assignee: The Boeing Company
    Inventors: Harold N. Seiden, Lynne C. Eigler
  • Publication number: 20080074624
    Abstract: A total internal reflection prism of a projection apparatus including a first prism, a second prism and a total-reflection-inhibiting layer is provided. The first prism has a first surface, a second surface and a third surface. The second prism has a light incident surface and a light-emitting surface opposite to the first surface. A gap exists between the first surface and the light-emitting surface. The total-reflection-inhibiting layer is connected between a part of the light-emitting surface and a part of the first surface. By setting the total-reflection-inhibiting layer, the probability of total reflection of an illumination beam transmitted inside the total internal reflection prism is reduced. Therefore, the efficiency of utilizing the illumination beam is increased and the brightness of an image is promoted.
    Type: Application
    Filed: August 9, 2007
    Publication date: March 27, 2008
    Applicant: CORETRONIC CORPORATION
    Inventors: Chin-Ku Liu, Sze-Ke Wang
  • Patent number: 7329007
    Abstract: A projector includes an illumination device, a color separation system, a light combining system, a projection system, and an optical adjustment portion. The color separation system separates the light emitted from the illumination device into blue light, red light, and green light. The light combining system can have a first dichroic filter reflecting one of blue light or red light, and a second dichroic filter reflecting green light which are placed in a crossed state and can combine image lights of respective colors exiting from the first through third light modulation devices. The projection system can project a combined light exiting from the light combining system while correcting chromatic aberrations of magnification of blue light and red light with respect to green light. The optical adjustment portion can adjust a size of an image light corresponding to the green light of the combined light exiting from the light combining system.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: February 12, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Joji Karasawa, Hidemasa Yamakawa, Kanji Yoshida, Masafumi Sakaguchi
  • Patent number: 7319565
    Abstract: Molded silicone rubber sheets with optical quality surfaces and methods for making the same. The silicone rubber sheets are made by molding liquid silicone rubber in a mold. In embodiments, the mold forms parallel optical quality flat surfaces. In one embodiment, a stiffening plastic is molded in the middle of the silicone rubber sheet between the parallel optical quality flat surfaces. In another embodiment, the mold forms one optical quality flat surface while the surface parallel to the optical quality flat surface is bonded to a prism.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: January 15, 2008
    Assignee: Cross Match Technologies, Inc.
    Inventors: Joe F. Arnold, Charles P. Bardons
  • Patent number: 7309149
    Abstract: A prism sheet, a backlight assembly having the prism sheet, and an LCD device having the prism sheet, the prism sheet includes a first surface, a second surface and a reflecting member. A light is incident upon the first surface. The second surface includes a prism pattern. The incident light exits through the second surface. The reflecting member is provided on the first surface to partially reflect irradiated light that is received on the first surface.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: December 18, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Hwan Lee, Jin-Mi Jung
  • Patent number: 7303286
    Abstract: In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a total internal reflection prism for both directing flux that is emitted from the relay lens to the DMD and directing flux that is reflected by the DMD toward a projection lens, the relay lens is unified with the prism as a lens-integral prism by bonding the relay lens to the total internal reflection surface of the prism.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: December 4, 2007
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Naofumi Ishikura, Jun Ogawa
  • Patent number: 7300168
    Abstract: A highly adaptable system for creating colorful spectral displays or for achieving a prismatic effect using visible light. The invention includes a fixed-angle or monolithic prismatic element fabricated from plate glass mirror material. A compound version of this monolithic element wherein multiple single elements have been affixed to one another for the purpose of creating a more complex spectral display is also provided. The invention also includes a prism-like device that utilizes a standard mirror, mirrors, or other materials with highly reflective surfaces and water or a similar fluid that disperses light in a predictable manner at or on a specific target. Both the fixed prismatic elements and the adjustable light dispersing elements may be arranged into one or more arrays that may be used to create complex spectral displays on a variety of surfaces while utilizing one or more available light sources or a moving light source such as the sun.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: November 27, 2007
    Inventor: James F. Nagy
  • Patent number: 7298558
    Abstract: An electronically adjustable, combinational color filter device is provided for generating color light. Incoming light is split in a polarizing beam splitter/combiner into a first and a second element of light. One or more wave plates operate to modify the polarization state of the first element of light, and one or more dichroic reflective filters reflect portions of the first element of light having a predetermined wavelength. Similarly, one or more wave plates operate to modify the polarization state of the second element of light, and one or more dichroic reflective filters reflect portions of the second element of light having a predetermined wavelength. Reflected portions of the first element and the second elements of light are combined in the polarizing beam splitter/combiner to create color light. A spatial light modulator may be used to create color images.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 20, 2007
    Assignee: Teledyne Licensing, LLC
    Inventors: Scott Patrick Campbell, Bing Wen
  • Patent number: 7248423
    Abstract: A transparent member has a light incident surface formed in such a manner as to be oriented downwards, a light emitting surface formed in such a manner as to be oriented towards a driver M and a reflecting mirror surface having a reflecting member integrally attached thereto which is formed into a convex surface relative to the driver on an opposite side to the light emitting surface. The light incident surface is formed into the shape of an integrally angled concave surface. The light emitting surface is formed into the shape of an externally angled convex surface. The reflecting mirror surface includes a central convex mirror surface portion which is oriented further downwards at a central portion of the reflecting mirror surface.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: July 24, 2007
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takayoshi Horii, Junichi Teraoka
  • Patent number: 7227706
    Abstract: An image-taking lens apparatus has an image sensor for converting an optical image of a subject into an electrical signal and an image-taking lens system for forming the optical image on the image sensor. The image-taking lens system includes a prism for bending the optical path, and the refractive index of the prism fulfills a prescribed conditional formula.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: June 5, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Genta Yagyu, Shinji Yamaguchi, Kenji Konno, Kaori Kojima
  • Patent number: 7221522
    Abstract: A optical system for a viewing instrument with a variable direction of view is disclosed generally comprising shaft, first and second reflectors located at the distal end of the shaft, where the first reflector rotates about an axis angularly offset from the longitudinal axis of the shaft, and an entrance pupil positioned in the optical path created by the reflectors and preceding the reflecting surface of the second reflector. In certain embodiments, the entrance pupil comprises an aperture stop positioned between the first and second reflectors. In some embodiments, the system includes negative and positive lenses located adjacent the entrance and exit faces of the first reflector.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: May 22, 2007
    Assignee: Karl Storz Development Corp.
    Inventors: John C. Tesar, Eric L. Hale, Nathan Jon Schara, Hans David Hoeg
  • Patent number: 7215455
    Abstract: The inner drum exposure apparatus records an image by scanning a recording material held on an arcuate inner peripheral surface of a support with a light beam that is emitted from a light source and modulated in accordance with image information and deflected by a total reflection mirror plane of a rotatably driven scanning device such as a spinner. The scanning device includes a first cylindrical lens for condensing the incident light beam incident into the total reflection mirror plane along a first plane containing an optical axis of the light beam and a second cylindrical lens for scattering the light beam along a second plane orthogonal to the first plane. The incident light beam is shaped into a beam spot of an elliptical configuration whose major axis is orthogonal to a beam deflecting/scanning direction by the first and second cylindrical lenses.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: May 8, 2007
    Assignee: Fujifilm Corporation
    Inventor: Hiroshi Matsuoka
  • Patent number: 7208719
    Abstract: An assembly for an image capture device comprises an imaging lens, an optical spacer comprising at least one reflective surface and physically integrated with the imaging lens, and a photo-sensing system physically integrated with the optical spacer.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: April 24, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Kurt E. Spears, Rodney C. Harris
  • Patent number: 7178920
    Abstract: In a projection display device that is provided with a relay lens for converting flux that is emitted from a light source to a parallel flux for illuminating an image display element (DMD), and a total internal reflection prism for both directing flux that is emitted from the relay lens to the DMD and directing flux that is reflected by the DMD toward a projection lens, the relay lens is unified with the prism as a lens-integral prism by bonding the relay lens to the total internal reflection surface of the prism.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: February 20, 2007
    Assignee: NEC Vietechnology, Ltd.
    Inventors: Naofumi Ishikura, Jun Ogawa
  • Patent number: 7164536
    Abstract: A brightness enhancing structure for a reflective display. A plurality of transparent hemi-beads form a film substantially covering and protruding inwardly from the structure's inward surface. A corresponding plurality of microstructured toroidal lenses are provided on the structure's outward side. Each lens is optically coupled to an adjacent one of the hemi-beads to redirect incident light rays toward the adjacent hemi-bead, such that the redirected light is totally internally reflected by the hemi-bead and reflected back in a direction approximately opposite that of the incident rays. This substantially reduces undesirable dark, non-reflective circular regions of each hemi-bead which would otherwise exist in the absence of this invention.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: January 16, 2007
    Assignee: The University of British Columbia
    Inventor: Lorne A. Whitehead
  • Patent number: 7149015
    Abstract: Disclosed are optical systems and methods of producing obliquity corrected light beams, for example, holographic recording and retrieval systems that utilize an obliquity corrected reference beam. One method includes directing a light beam reflected from a prism mirror to a reference plane with an angle of incidence to the reference plane, wherein the prism mirror varies the width of the light beam according to the angle of incidence to the reference plane. The optical system may include a holographic data storage system and the reference plane may be associated with a holographic storage medium.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: December 12, 2006
    Assignees: InPhase Technologies, Inc., Sanyo Electric Co., Ltd.
    Inventors: Jan Hoogland, Curtis A. Shuman
  • Patent number: 7142242
    Abstract: An image forming optical device to form an image of optical light having prism shaped first and second optical devices. The first optical device has a first interface to pass the optical light into the first optical device, a first reflect interface to reflect the optical light from the first interface and a first output interface to output the optical light from the first reflect interface. The second optical device has a second interface to pass the optical light from the first output interface, a second reflect interface to reflect the optical light from the second interface and a second output interface to output the optical light from the second reflect interface. An optical axis of the optical light passing through the first interface is parallel to an optical axis of the optical light passing though the second output interface.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: November 28, 2006
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Yoshichi Otake, Hideki Tengeiji
  • Patent number: 7139125
    Abstract: A light redirecting article redirects light toward a target angle. The light redirecting article has an input surface for accepting incident illumination over a range of incident angles and an output surface with a plurality of light redirecting structures, each light redirecting structure having an internal reflection surface oriented at a first angle with respect to the plane of the input surface and an exit surface for emitting an output light at an emitted light angle, wherein the exit surface is oriented at a second angle relative the plane of the input surface. For incident illumination at a principal angle greater than 60 degrees from normal, light is reflected from the internal reflection surface and emitted from the exit surface at an emitted light angle that is within 5 degrees of the target angle.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: November 21, 2006
    Assignee: Eastman Kodak Company
    Inventor: Xiang-Dong Mi
  • Patent number: 7123394
    Abstract: A system for the laser beam deflection for optical measuring systems includes an optical element for the deflection of an incident laser beam and a driving unit for generating a rotational movement between the optical element and the incident laser beam in order to deflect the laser beam in different successive directions. The optical element includes at least two segments for the deflection of the incident laser beam by one fixed deflection angle respectively. During the rotational movement, the laser beam successively impinges on the different segments. The optical element has a disk-shaped or ring-shaped design, and the segments are wedge-shaped with inclined surfaces. In the case of a method for the laser beam deflection, a laser beam impinging in an offset manner with respect to the axis of rotation is deflected during a time period by each segment into precisely one defined direction.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: October 17, 2006
    Assignee: EADS Deutschland GmbH
    Inventors: Wolfgang Rehm, Guenter Reithmeier, Paul Zeller
  • Patent number: 7119972
    Abstract: An apparatus for manipulating a path of a beam includes a first wedge and a second wedge. The first wedge includes a first refractive surface and a second refractive surface. The second wedge includes a third refractive surface adjacent to the second refractive surface, and a reflective surface. The beam refracts at the first refractive surface, refracts at the second refractive surface, refracts at the third refractive surface, reflects from reflective surface, refracts at the third refractive surface, refracts at the second refractive surface, refracts at the first refractive surface. At least one of the first wedge and the second wedge can be rotated so that the beam exiting the apparatus can be oriented substantially orthogonal to the beam entering the apparatus.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: October 10, 2006
    Assignee: Agilent Technologies, Inc.
    Inventor: James B. Prince
  • Patent number: 7113334
    Abstract: It comprises a first prism (10, 10a, 10b), with triangular base, on which is arranged at least one second transparent prism (2, 11) the combination defining a prismatic body which is arranged on the stereoscopic pair so that, when the user's eyes (13, 14) are positioned in front of the upper face of the prismatic body, each eye visualises the corresponding stereogram (3, 4) via the upper face of the prismatic body, reproducing the three-dimensional vision effect. In an embodiment of the invention the second prism (2, 11) is triangular and provision has been made for a third prism (12, 15) of identical configuration to the above, in which case the stereoscopic photographs/images (3, 4) are divided into halves A, B, C, D which are duly arranged for achieving three-dimensional visualisation. It comprises illumination equipment (5), some lenses (8, 8a) and a directional filter (9).
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: September 26, 2006
    Inventor: José Javier Alejo Trevijano
  • Patent number: 7102824
    Abstract: An optical element is provided that may be used for collecting optical radiation incident at large angles of incidence. The element may include a grating window formed of grating elements that may collect large incident angle radiation and reflect that radiation, e.g., under total internal reflection in a substantially normal direction. A lens or lens array may be used to collect the internally reflected radiation and focus that radiation to a detector. Example detectors include infrared detectors. The element may be formed to collect, reflect, and redirect optical radiation incident at angles above 45° as measured from a surface normal to a detector oriented substantially at normal incidence. The detected signal from the optical element may be used to control systems within an aircraft or other vehicle capable of flight.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: September 5, 2006
    Assignee: The Boeing Company
    Inventors: Roy Clark, Douglas C. Hamilton
  • Patent number: 7009787
    Abstract: The object of the invention is to make a viewing unit of the image display compact so that it can be mounted on portable telephones or information terminals. The portable image display of the invention comprises a speaker portion, a microphone portion, an image display device 9 and a viewing optical system for forming an exit pupil to view an image displayed on the image display device and having a generally positive refracting power. The viewing optical system is constructed of at least one prism member 10 comprising an entrance surface through which a light beam emanating from the image display device 9 is entered into the prism, at least one reflecting surface at which the light beam is reflected within the prism and an exit surface through which the light beam leaves the prism. The at least one reflecting surface has a curved surface shape for imparting power to a light beam.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: March 7, 2006
    Assignee: Olympus Corporation
    Inventor: Toshiyuki Nagaoka
  • Patent number: 7006303
    Abstract: A light incident on one side surface of a prism is reflected twice between an inner surface of the other side surfaced of the prism and an inner surface of the one side surface of the prism. The reflected light is emitted from the rear surface of the prism to form an image on an image pickup element through the image pickup lens. A first reflective member disposed on a substantially entire other side surface of the prism totally reflects the light incident on the inner surface of the other side prism. A second reflective member disposed on an area, of the one side surface of the prism, in which the light incident on the inner surface of the one side prism is not totally reflected totally reflects the light incident on the inner surface of the one side prism.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: February 28, 2006
    Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Masayoshi Imoto
  • Patent number: 6992846
    Abstract: A scan engine is disclosed for use in a data collection device, as well as a method for producing a scan engine and an image sensor assembly. The scan engine includes a housing with an opening for receiving light from a scanned dataform, an image sensor which is located within the housing to sense light entering an aperture in the image sensor, and a prism located within the housing for receiving light from the opening along a first path and to provide at least a portion of the received light to the aperture along a second path.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: January 31, 2006
    Assignee: Symbol Technologies, Inc.
    Inventor: Chen Feng
  • Patent number: 6992753
    Abstract: Radiation-induced damage to a lens material in a projection exposure system is reduced by selection of maximum design fluence values HD for lenses and at least one lens made of a material having a characteristic transition point TRC after exposure to a given amount of radiation, wherein, for instance, TRC<0.8. HD among other relationships and/or characteristics of the lenses.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: January 31, 2006
    Assignee: Carl Zeiss SMT AG
    Inventors: Daniel Krähmer, Eric Eva
  • Patent number: 6982829
    Abstract: A beam splitter is constructed using one or more cholesteric layers. Each cholesteric layer reflects light of a given wavelength and polarization. The beam splitter is placed in a prism assembly. The cholesteric layers of the beam splitter are chosen such that portions of light entering the beam splitter are individually directed to a specific light path or to a processing face of the prism assembly. A microdisplay is mounted on each processing faces forms a kernel, and each microdisplay processes the light portions (light beams) directed toward them. Light beams reflected from the microdisplays have image content added to them from the microdisplays. The kernel is utilized in a light management system, such as that used in a video projection (e.g., projection television).
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: January 3, 2006
    Assignee: LightMaster Systems, Inc
    Inventor: Arthur Berman
  • Patent number: 6980358
    Abstract: A truncated triangular prism has an entrance and an exit face perpendicular to each other and a reflecting face inclined at an angle ? to the entrance face where ? is about 135°??B, and where ?B is the external Brewster angle for the material of the prism at the wavelength of radiation to be reflected by the prism. A beam of p-polarized radiation directed into the prism through the entrance face at the Brewster angle is totally internally reflected from the reflecting face and leaves the exit face at the Brewster angle and at an angle of ninety degrees to the direction at which the radiation enters the prism.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: December 27, 2005
    Assignee: Coherent, Inc.
    Inventors: Tracy F. Thonn, R. Ian Edmond
  • Patent number: 6980728
    Abstract: An optical element (1) for reflecting and/or redirecting light rays (L1) entering therein and again emerging therefrom consists of a transparent base body (2) which is so structured and/or formed that, with the formation of reflection surfaces (8) bounding the base body (2), at least a part of the light rays (L1) impinging upon the reflection surfaces (8) upon emergence from the transparent base body (2) are totally reflected, and at least one cover body (9) arranged behind the reflection surfaces (8). The reflection surfaces (8), and the surfaces of the cover body or bodies (9) towards the reflection surfaces, are adapted to one another such that between them there remains a thin gap (10) or only point contacts exist.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: December 27, 2005
    Assignee: Zumtobel Staff GmbH
    Inventors: Gerald Ladstätter, Markus Bohle
  • Patent number: 6961194
    Abstract: Disclosed is an optical component, which comprises a prism element adjacent to a lens element, where the two elements are separated by a small air gap. In disclosed embodiments, the elements have adjacent and parallel surfaces which are substantially planar and which, with the small air gap, operate through Total Internal Reflection (“TIR”) to direct light beams that strike the planar surfaces. Light beams that strike at less than the critical angle are internally reflected, while light beams which strike at greater than the critical angle pass through. The TIR surfaces thereby separate the desired optical signals from the spurious ones. The combined TIR prism lens operates as a single and integrated component which directs desired light beams to a reflective optical processing element such as a Spatial Light Modulator and which focuses the processed light beams as they leave the combined TIR prism lens.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: November 1, 2005
    Assignee: Texas Instruments Incorporated
    Inventor: Steven M. Penn
  • Patent number: 6956701
    Abstract: Embodiments of this invention include a system, method and apparatus for combining light paths of multiple colored light sources through a common integration tunnel.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: October 18, 2005
    Assignee: InFocus Corporation
    Inventors: Mark D. Peterson, T. Scott Engle, Jeffrey A. Gohman
  • Patent number: 6937405
    Abstract: An integrated type optical pickup module apparently approximates a plurality of light-emitting points of semiconductor lasers. An optical element is interposed between first and second semiconductor lasers. The optical element has first and second reflecting surfaces perpendicular to each other. The first and second reflecting surfaces reflect laser beams projected from the first and second semiconductor lasers, respectively. The optical element further has a mounting surface perpendicular to both the first and second reflecting surfaces. The optical element is mounted, via the mounting surface of the optical element, to a submount having a top surface on which the first and second semiconductor lasers are mounted. Heterojunction surfaces of the first and second semiconductor lasers may be substantially perpendicular to the first and second reflecting surfaces, respectively.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: August 30, 2005
    Assignee: Ricoh Company, Ltd.
    Inventor: Satoru Sugawara
  • Patent number: 6912300
    Abstract: An object of the invention is to achieve a small and thin irregular pattern reader comprising: a prism possessing a detection surface on which a subject to be detected having an irregular pattern is put and an incident plane having a first angle of inclination to the detection surface and emitting a light reflected on the detection surface corresponding to an incident light incident upon the incident plane; a first optical system possessing a light source and causing a light from the light source to be incident upon the incident plane of the prism with its optical axis substantially in parallel to the detection surface; and a second optical system for transmitting the emission light emitted from the prism to an image pick-up device.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: June 28, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsuki Okamoto, Yukio Sato, Junichi Nishimae, Hiroyuki Kawano
  • Patent number: 6903885
    Abstract: A light-projecting device comprises a superimpose-plate, which is put on a focusing glass. A hollow pentagonal mirror has a roof reflecting plane, reflecting a light beam passing through the focusing glass and the superimpose-plate, a third reflecting plane, reflecting the light beam reflected on the roof reflecting plane, and an emergent opening through which the light beam reflected on the third reflecting plane passes. An illumination light beam output from a light source of a light-projecting optical system is reflected on a light-projecting prism, and radiated from the emergent opening to the third reflecting plane. The illumination light beam is reflected on the third reflecting plane and the roof reflecting plane, and is approximately perpendicularly radiated on the superimpose-plate.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: June 7, 2005
    Assignee: PENTAX Corporation
    Inventors: Hidefumi Kaneko, Tetsuya Abe
  • Patent number: 6888691
    Abstract: An apparatus that reduces convergence and focus drift in imager prism assemblies includes at least one assembly having a first side and a second side. The first side communicates with a first isolator inner surface and a second side communicates with a second isolator inner surface. An outer surface of the first isolator communicates with a first member of a frame. An outer surface of the second isolator communicates with a top side of a damping member. A bottom side of the damping member communicates with a second member of the frame. There is at least one guide pin located through the first isolator and the first member. A first adhesive secures the first side to the first isolator inner surface and the first adhesive secures the second side to the second isolator inner surface. A second adhesive secures the first isolator outer surface to the first member and the second adhesive secures the second isolator outer surface with the top side.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: May 3, 2005
    Assignee: Thomson Licensing S. A.
    Inventor: Carl Douglas Archer, Jr.
  • Patent number: 6885403
    Abstract: A color separation beam splitter for projectors is provided, which comprises a plurality of prisms connected with each other and three optical interference filters having different wavelength ranges respectively formed on side surfaces of the plurality of prisms. The three optical interference filters include a yellow color reflective dichroic mirror, a red color reflective dichroic mirror, and a blue color reflective dichroic mirror to filter out the yellow light and provide three primary color lights with high color purity. Moreover, by reflecting a light beam twice, the number of layers of dichroic mirror can be reduced. The color purity of the light is increased after reflected twice by the dichroic mirrors. Moreover, configuration of a liquid crystal projector by use of this prism assembly as color separation unit is also disclosed.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: April 26, 2005
    Assignee: Industrial Technology Research Institute
    Inventors: Fang Chuan Ho, Cheng-Wei Chu
  • Patent number: 6879419
    Abstract: The present invention relates generally to ladar and more particularly to a tilted primary clamshell lens laser scanner for transmitting a generally collimated beam of radiation at a first frequency such that the beam rotates about a central axis so as to form a conical scanning pattern suitable for lidar applications. In addition, the ladar includes a system for transmitting at least one additional collimated beam of radiation at a second frequency at a wider angle then the first collimated beam.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: April 12, 2005
    Assignee: Northrop Grumman Corporation
    Inventors: Dennis C. Richman, Susan Raffensperger
  • Patent number: 6873479
    Abstract: A mounting bracket (40) for suspending a clear aperture of the base face of a prism (30) has a frame providing a horizontal support surface for allowing light to pass through the clear aperture of the suspended prism (30). First, second, and third support elements (44, 46) are spaced apart on the frame for supporting the base face of the prism (30), suspending the clear aperture. The second and third support elements (44) are peripheral to the clear aperture. The center of gravity of the prism (30), vertically projected, lies on or within the triangle formed by the first, second, and third support elements (44, 46).
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: March 29, 2005
    Assignee: Eastman Kodak Company
    Inventor: Franklin D. Ehrne
  • Patent number: 6865037
    Abstract: Systems and methods for adjusting optical path length of an optical path are provided. The systems and methods can be used to controllably adjust optical path length in an external cavity laser. A representative optical path having a first end and a second end comprises a first transparent refractive element located in the optical path between the first end and the second end. The transparent refractive element is adjustable to adjust the optical path length of the optical path without changing the physical distance between the first end and the second end. A representative method includes introducing a transparent refractive element into the optical path and adjusting the transparent refractive element to change the optical path length without changing the physical distance between the first end and the second end of the optical path.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: March 8, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Dennis Carlo Diaz, Geraint Owen, Susan Hunter, George M. Clifford, Jr.
  • Patent number: 6856464
    Abstract: A three element prism system and method for splitting/combining three different colors of light arranged such that the size of a selected one of the color prism, such as for example, the red prism and, consequently the clear aperture, are increased without a corresponding increase in the size of the other prisms (e.g., the blue and green prisms). This is accomplished by adjusting the air gap A2 of the selected light path (e.g., red) so that the effective total selected light path T, which includes the selected light air gap A2 and the selected light glass path G2 is the same as the total path length T of both the other light paths (e.g., green and blue) comprised of air gap A1 plus glass path G1.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: February 15, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Frank J. Poradish, Steven M. Penn
  • Patent number: 6850375
    Abstract: The present invention discloses a lighting apparatus including a light source, an optical member that is placed in front of the light source and provided with a reflecting surface for reflecting light from the light source or prism sections each made up of a refracting surface which receives the light incident from the light source and a reflecting surface for reflecting the light incident from this refracting surface. Here, in the optical member, there is a plurality of pairs of the reflecting surfaces or prism sections arranged in the direction perpendicular to the optical axis within a plane including the radial direction of the light source centered on the optical axis. The present invention can provide a low-profile lighting apparatus using light from the light source with high efficiency.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: February 1, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiharu Tenmyo
  • Publication number: 20040246600
    Abstract: A scan engine is disclosed for use in a data collection device, as well as a method for producing a scan engine and an image sensor assembly. The scan engine includes a housing with an opening for receiving light from a scanned dataform, an image sensor which is located within the housing to sense light entering an aperture in the image sensor, and a prism located within the housing for receiving light from the opening along a first path and to provide at least a portion of the received light to the aperture along a second path.
    Type: Application
    Filed: June 23, 2004
    Publication date: December 9, 2004
    Inventor: Chen Feng