Multicolor Picture Patents (Class 353/31)
  • Patent number: 11435659
    Abstract: An illumination device according to the present disclosure includes: an illumination optical system that includes a first variable diaphragm and a second variable diaphragm, and that generates illumination light used for generation of an image by a pulse width modulation method on the basis of light from the light source; a luminance calculating section that calculates average luminance at least for each frame in an image signal; a gray-scale evaluation computing section that evaluates a gray-scale value in a screen for each display period of at least a unit gray-scale bit; a first aperture diameter determining section that determines an aperture diameter of the first variable diaphragm on the basis of the average luminance calculated by the luminance calculating section; and a second aperture diameter determining section that determines an aperture diameter of the second variable diaphragm on the basis of evaluation by the gray-scale evaluation computing section.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: September 6, 2022
    Assignee: SONY GROUP CORPORATION
    Inventor: Akira Akiba
  • Patent number: 11428940
    Abstract: Disclosed are dual-light-source, high dimming-ratio avionics displays with digital light processing projector technology for rendering a visual display from generated light. The dual light sources are directed towards a beam splitter adapted to pass a substantial portion of the light from the first light source and to reflect a minority portion of the light from the second light source. An image is rendered at a substantially transparent, selectively reflective substrate adapted to reflect light of a range of visible wavelengths toward a viewer of the displays.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: August 30, 2022
    Assignee: Garmin International, Inc.
    Inventors: Iain P. Gillan, Steven A. Stringfellow, Ryan K. Eakin
  • Patent number: 11428376
    Abstract: A projection device includes a first light-emitting component including a first light-emitting member, a first light-transmitting member, a first driving member and a first lens. The first light-emitting member is used for generating a linear light band; the first light-transmitting member is defined with a first linear light-transmitting region; the first driving member is fixedly connected with the first light-emitting member or the first light-transmitting member, and used for allowing the first light-emitting member and the first light-transmitting member to generate a relative motion, and allowing the linear light band to intersect with the first linear light-transmitting region; and the first lens, the first light-emitting member, the first light-transmitting member and the first lens are sequentially arranged. The projection device of the present disclosure is capable of generating the dynamic meteor effect to improve the user experience.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: August 30, 2022
    Inventor: Yuanting Xin
  • Patent number: 11425348
    Abstract: An optical display device includes a plurality of emitters configured to emit electromagnetic radiation in a main emission direction and at least one optical modulation unit which has an adjustable focal length. The emitters are arranged in a main plane and are separately controllable from one another. The optical modulation unit is arranged downstream of the emitters in the main emission direction. Images of the emitters are generated by means of the optical modulation unit, the images of the emitters each having a distance from the main plane which can be predetermined by means of the adjustable focal length. Methods of operating an optical display device are also disclosed.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: August 23, 2022
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventors: Klaus Flock, Hubert Halbritter
  • Patent number: 11422446
    Abstract: An illumination system includes a green light source, a red light source, a blue light source, and a thermoelectric cooler. The green light source includes multiple semi-conductor dies, and each of the semi-conductor dies has a power consumption of 8 W or larger. The thermoelectric cooler is thermally coupled to the red light source, and neither the green light source nor the blue light source is thermally coupled to a thermoelectric cooler.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: August 23, 2022
    Assignee: YOUNG OPTICS INC.
    Inventor: Jia-Bin Huang
  • Patent number: 11425346
    Abstract: The disclosure relates to a device for providing a multi-colored light beam for a projector. The device comprises a first light source, a second light source, a waveguide element, a beam forming device and a structure element. The waveguide element forms a first waveguide for guiding light from the first light source, a second waveguide for guiding light from the second light source and a coupling out region for coupling light out of the first waveguide and the second waveguide. The beam forming device is designed to form the multi-colored light beam using the light coupled out of the coupling out region. The first light source, the second light source, the waveguide element and the beam forming device are arranged on the structure element.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: August 23, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Huebel, Tobias Graf
  • Patent number: 11415799
    Abstract: A display system and a display method therefor, and a vehicle. The display system includes a display device and an image transmission device. The display device is configured to display a plurality of images; the image transmission device is configured to transmit light of at least two images of the plurality of images through different paths and to respectively form at least two virtual images corresponding to the at least two images of the plurality of images, and an imaging position of at least one of the at least two virtual images is variable.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 16, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Tao Hong
  • Patent number: 11415871
    Abstract: An illumination device includes a light emitting element emitting first light, wavelength conversion element converting the first light into second, first optical element, second optical element having a first area transmitting the second light, and second area transmitting part of the first light and reflecting another part, and third optical element having a third area transmitting the second light, and fourth area transmitting part of the first light and reflecting another part. The first area first light transmittance in the second optical element is higher than that in the second area, the second optical element position made switchable between first and second positions, the third area first light transmittance in the third optical element is higher than that in the fourth area, the third optical element position is made switchable between third and fourth positions, and the fourth area first light transmittance is different from that in the second area.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: August 16, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11402735
    Abstract: A projection system, comprising: a light-emitting apparatus for providing first light and second light emitted in a time sequence; a light-splitting system for dividing the first light into first primary color light and second primary color light, and dividing the second light into two paths of third primary color light; a spatial light modulator, comprising a first region and a second region, wherein the primary color light emitted along a first optical path enters the first region, and the primary color light emitted along a second optical path enters the second region; and an image processing apparatus for dividing, corresponding to the first region and the second region, image signals to be output into two groups, and changing the sequence of at least one of the groups so as to match the time sequence of primary color light received in a corresponding region.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 2, 2022
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Zuqiang Guo, Peng Du, Yi Li
  • Patent number: 11391955
    Abstract: Techniques for displaying holograms in wearable display devices are described. An image source projects holographic images sequentially in three primary colors into a waveguide, where the images are modulated in amplitude and phase in spatial light modulator (SLM). Depending on implementation, the image source may be located next to the waveguide or an end of optical fibers, where the optical fibers are provided to transport the holographic images near the waveguide for projection thereof into the waveguide.
    Type: Grant
    Filed: January 23, 2022
    Date of Patent: July 19, 2022
    Inventor: Darwin Hu
  • Patent number: 11378810
    Abstract: Different configurations of multi-faceted optical elements and associated methods are described that split an input optical beam into multiple output beams, and in a reverse configuration, combine a set of input beams into an output beam. One example multi-faceted optical element includes K optical facets, where K is greater than or equal to six, and K-2 internal surfaces. Each internal surface reflects at least a portion of the incident light and includes a coating designed to modify one or more of a spectral content, polarization, intensity or phase of the incident beam. The multifaceted optical element is configurable to either split an input light beam into four or more output light beams, or to combine four or more input light beams into a single output light beam. Such a multi-faceted optical element can be implemented as part of, for example, a display system, a multi-spectral camera or a polarization camera.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: July 5, 2022
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventor: Stanley Pau
  • Patent number: 11381804
    Abstract: An approach for projecting light may be implemented using a acousto-optical depth switch that uses surface acoustic waves produced along a substrate to guide image light to different areas. The surface acoustic waves may be generated on a substrate using a transducer. Surface acoustic waves of different frequencies can guide image light onto different optical elements at different physical positions. The optical elements may be configured to show objects in an image at different distances from a viewer.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: July 5, 2022
    Assignee: Magic Leap, Inc.
    Inventors: William Hudson Welch, Jeremy A. Grata, Marwan Hussein
  • Patent number: 11360373
    Abstract: Illumination optical system (101) for outputting light to a projection lens, light source unit (102) for outputting light to illumination optical system (101), and dust-proof case (103) houses illumination optical system (101) and can be divided into two housings are provided, and the dust-proof case (103) has second positioning member (105-1), (105-2) provided on the outer surface of dust-proof case (103) and fitted to and first positioning member (104-1), (104-2) provided in light source unit (102), mounting seating surface (106) provided on the outer surface of the dust-proof case (103) for screwing light source unit (102), and pinching portion (107) for sandwiching a final optical member of light source unit (102) sandwiched between two housings.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: June 14, 2022
    Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Ryosuke Kawase
  • Patent number: 11360557
    Abstract: An eye tracking system for detecting position and movements of a user's eyes in a head-mounted display (HMD). The eye tracking system includes at least one eye tracking camera, an illumination source that emits infrared light towards the user's eyes, and diffraction gratings located at the eyepieces. The diffraction gratings redirect or reflect at least a portion of infrared light reflected off the user's eyes, while allowing visible light to pass. The cameras capture images of the user's eyes from the infrared light that is redirected or reflected by the diffraction gratings.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: June 14, 2022
    Assignee: Apple Inc.
    Inventors: Kathrin Berkner-Cieslicki, Se Baek Oh, Scott M. DeLapp, Christopher F. Griffo, Bradley C. Steele, Ting Sun, Kenichi Saito, Noah D. Bedard
  • Patent number: 11360372
    Abstract: A projector includes a first light source, a second light source, a collimating lens, a wavelength conversion module and a dichroic mirror. The first light source and the second light source respectively emit a first illumination beam and a second illumination beam. The collimating lens includes a first part and a second part and configured to receive and transmit the first illumination beam. The wavelength conversion module receives the first illumination beam from the first part, and generates an excitation beam transmitted toward the first part and the second part. The dichroic mirror corresponds to the first part, and configured to reflect the first illumination beam and the second illumination beam respectively to different directions for projecting the first illumination beam onto the first part and to be passed by the excitation beam.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: June 14, 2022
    Assignee: Qisda Corporation
    Inventors: Wen-Yao Lin, Ching-Shuai Huang
  • Patent number: 11356644
    Abstract: An illuminator of the present disclosure includes a light source unit that emits at least one colored light, and emits, for each of the pieces of colored light, light having a plurality of peak wavelengths different from each other, and a diffraction device that includes a plurality of divided areas, and displays, in each of the divided areas, a diffraction pattern that is optimized at a corresponding peak wavelength out of each of the peak wavelengths. The plurality of divided areas allows the light of the plurality of peak wavelengths to enter the plurality of divided areas individually for each of the pieces of colored light.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: June 7, 2022
    Assignee: SONY CORPORATION
    Inventors: Takahiro Mochizuki, Masa Tanaka
  • Patent number: 11347038
    Abstract: An optical system (10) is disclosed comprising a plurality of solid state lighting elements (30, 30?, 30?) belonging to different groups, wherein solid state lighting elements of different groups produce luminous outputs having different spectral compositions, a collimator array (20) comprising a plurality of domains (23, 23?, 23?), each domain comprising a plurality of collimators (21, 21?), wherein within each domain each collimator is arranged to collimate the luminous output of at least one solid state lighting element such that each domain contains a number of solid state lighting elements arranged in a spatial pattern, said number consisting of a fixed ratio of solid state lighting elements from each group, and wherein said spatial pattern is varied between domains and a lenslet plate (40) having a first lenslet array on a first surface (41) facing the collimator array and a second lenslet array identical to the first lenslet array on a second surface (43) opposing the first surface, wherein each lensle
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: May 31, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Erik Paul Boonekamp, Marcellus Jacobus Johannes Van Der Lubbe
  • Patent number: 11347141
    Abstract: A light source device according to the present disclosure includes a first light source, a second light source, a wavelength conversion section, a polarization splitting/combining element, a dichroic mirror for reflecting second light and transmitting third light emitted from the wavelength conversion section, a retardation plate, a diffusion section, and a condensing optical section. Condensing optical section has a first end part, a second end part, and a reflecting part. Second light proceeding via the polarization splitting/combining element is transmitted through the condensing optical section from the second end part toward the first end part, and then enters the dichroic mirror. Second light reflected by the dichroic mirror passes through the condensing optical section and then enters the polarization splitting/combining element. Third light passes through the condensing optical section and then enters the polarization splitting/combining element.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: May 31, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Junichi Suzuki, Hidefumi Sakata, Shingo Komiyama
  • Patent number: 11340447
    Abstract: A display device includes: a light source unit that outputs laser light; a light-guide optical system that forms a plurality of optical paths of the laser light; an optical path switch element that switches an optical path of the laser light to any one of the plurality of optical paths; an optical member that forms a single optical path in a subsequent stage of the plurality of optical paths; and a projection mirror that forms a projection image to be projected on a screen by scanning the laser light that passed through the single optical path. The plurality of optical paths includes an optical path for low luminance and an optical path for high luminance which make the laser light have different luminance. The optical path switch element is disposed on an optical path between the light source unit and the projection mirror.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 24, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Akihiro Oguri
  • Patent number: 11343479
    Abstract: A control method for a position detecting device including a first adjusting step of emitting detection light to a jig for adjustment disposed on a screen and adjusting the detection light to first detection light such that the detection light is emitted to a specific range of the jig for adjustment and a step of setting, in a state in which the detection light has been adjusted to the first detection light, a region including the jig for adjustment as a non-detection area where a detecting section does not detect the detection light as the reflected light from an obstacle, wherein the position detecting device including a light emitting section configured to emit the detection light and the detecting section.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: May 24, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Kohei Yanai, Akihiko Tamura, Makoto Otani
  • Patent number: 11336875
    Abstract: The wavelength conversion element according to the present disclosure includes a wavelength conversion layer which has a first surface and a second surface different from the first surface, and which includes a scattering element no higher than 5% in volume ratio, and which is configured to convert light in a first wavelength band into light in a second wavelength band different from the first wavelength band, and a plurality of protruding parts which is disposed so as to be opposed to the first surface, and which includes a first protruding part and a second protruding part adjacent to each other. A height of the plurality of protruding parts is no smaller than 1 ?m, and a distance between a vertex of the first protruding part and a vertex of the second protruding part in a direction along the first surface is no smaller than 3 ?m.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: May 17, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shinichi Yotsuya, Tetsuo Shimizu, Ryuta Koizumi, Mizuha Hiroki
  • Patent number: 11314157
    Abstract: A light source optical system includes a wavelength conversion unit configured to receive first color light emitted from by an excitation light source and emit second color light with a wavelength different from a wavelength of the first color light; and a first optical system and a second optical system provided in an optical path between the excitation light source and the wavelength conversion unit. The first optical system includes one optical element having a negative power, wherein the second optical system as a whole has a positive power, and wherein Conditional Expression (1) is satisfied as follows: 1.8<|Fn/F2|<5.0,??(1) where Fn is a focal length for a d-line of the optical element having the negative power of the first optical system, and F2 is a focal length for the d-line of the second optical system.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: April 26, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yohei Takano, Tatsuya Takahashi, Kasumi Nakamura
  • Patent number: 11307487
    Abstract: A laser illumination device and a projection system including the same. The laser illumination device includes a laser source, a light combining assembly, a micro-lens assembly, and a plurality of cylindrical lens assemblies; the plurality of cylindrical lens assemblies are provided in a light transmission path of the laser source; the micro-lens assembly is mounted at one side of the light combining assembly; each cylindrical lens assembly includes a first cylindrical lens array and a second cylindrical lens array; and the first cylindrical lens array and the second cylindrical lens array form a preset angle.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: April 19, 2022
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Zuqiang Guo, Peng Du, Yi Li
  • Patent number: 11307488
    Abstract: A light source system includes a fluorescent wheel, a color wheel, at least one light reflector, and a light source module. The fluorescent wheel includes at least one fluorescent section. The color wheel includes a filter portion. The light reflector has a reflective curved surface having a first focal point and a second focal point conjugated to each other. The first focal point is located on a rotation path of the fluorescent section. The second focal point is located on a rotation path of the filter portion. The light source module is configured to emit light to the first focal point.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: April 19, 2022
    Assignee: Delta Electronics, Inc.
    Inventor: Hung-Ying Lin
  • Patent number: 11300924
    Abstract: An illumination device for illuminating a spatial light modulator device. Sub-holograms are used for encoding a hologram into the spatial light modulator device. The Illumination device includes at least one light source for emitting light for illuminating the spatial light modulator device and a beam shaping unit. The beam shaping unit provides a flat-top plateau-type distribution of an absolute value of a complex degree of mutual coherence of the light in a plane of the spatial light modulator device to be illuminated. The flat-top plateau-type distribution of the absolute value of the complex degree of mutual coherence has a shape that is at least similar to a shape of the largest sub-hologram used for encoding of object points into the spatial light modulator device.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: April 12, 2022
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Gerald Futterer
  • Patent number: 11303860
    Abstract: A projection display unit includes a first spatial light modulator that first light enters; and an integrator optical system that second light and light passing through the first spatial light modulator enter.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: April 12, 2022
    Assignee: SONY CORPORATION
    Inventor: Yoshihisa Sato
  • Patent number: 11300860
    Abstract: A light projection system and method for generating an image with three primary colors having a module of first blue lasers, second lasers and a wavelength conversion element configured to emit light at a plurality of wavelengths after absorption of a light beam from the second lasers at an excitation wavelength, the output of the module being a combined light beam having a pre-defined chromaticity where the projector is calibrated so as to provide the pre-defined chromaticity of the combined beam over at least a range of laser drive current values to correct for non-linear performance of the wavelength conversion element.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 12, 2022
    Assignee: BARCO N.V.
    Inventors: Arnout Vetsuypens, Nico Coulier
  • Patent number: 11287090
    Abstract: Methods and apparatus for providing circadian-friendly LED light sources are disclosed. A light source is formed to include a first LED emission (e.g., one or more LEDs emitting a first spectrum) and a second LED emission (e.g., one or more LEDs emitting a second spectrum) wherein the first and second LED emissions are combined in a first ratio and in a second ratio such that while changing from the first ratio to the second ratio the relative circadian stimulation is varied while maintaining a color rendering index above 80.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: March 29, 2022
    Assignee: ECOSENSE LIGHTING INC.
    Inventors: Michael R. Krames, Aurelien J. F. David
  • Patent number: 11269250
    Abstract: There is provided an information processing apparatus, an information processing method, and a program that can enhance an effect obtained by causing display ranges of a plurality of display devices to overlap in a field of view of a user and displaying an image, the information processing apparatus including: an image control unit configured to, when a relationship between a first image and a second image satisfies a predetermined condition, the first image being displayed in a first field of view from a first display device, and the second image being displayed in a second field of view at least partially overlapping with the first field of view from a second display device different from the first display device, start display of the second image from the second display device. The present technology can be applied to, for example, a system using a drive-type projector.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: March 8, 2022
    Assignee: SONY CORPORATION
    Inventors: Kentaro Ida, Takuya Ikeda, Kazuyuki Yamamoto
  • Patent number: 11262581
    Abstract: An image projection system utilising a digital mirror device with pivotable mirrors and an asymmetric angular illumination of the mirrors.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: March 1, 2022
    Assignee: BAE SYSTEMS plc
    Inventors: Rory Thomas Alexander Mills, Michael David Simmonds
  • Patent number: 11258995
    Abstract: A projector and a drive circuit thereof are provided. The projector includes a light source and a drive circuit. The light source includes at least one red light diode, at least one green light diode, at least one first blue light diode and at least one second blue light diode. The drive circuit includes a red light drive circuit, a green light drive circuit, a first blue light drive circuit and a second blue light drive circuit. The green light drive circuit outputs a green light drive signal to the green light diode according to a green light control signal. The second blue light drive circuit outputs a second blue light drive signal to the second blue light diode according to a second blue light control signal. The second blue light control signal and the green light drive signal have synchronous pulse.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: February 22, 2022
    Assignee: Qisda Corporation
    Inventors: Chi-Jen Chen, Fang-Chieh Lu, Chun-Hsiao Lin
  • Patent number: 11249311
    Abstract: Image formation is performed by using a synthesis optical system, and in a first dichroic film and a second dichroic film that are the synthesis surfaces in the synthesis optical system, a direction in which the cross axis that is the intersecting axis extends corresponds to a direction of alignment of eyes of an observer.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: February 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Takeda, Mitsutaka Ide, Akira Komatsu, Masayuki Takagi, Toshiaki Miyao, Tokito Yamaguchi
  • Patent number: 11249379
    Abstract: An illumination system including first, second and third light sources, a splitting element and a wavelength conversion element is provided. The first light source emits a first light beam. The second light source emits a second light beam. The third light source emits a third light beam. The splitting element is disposed on transmission paths of the first, the second and the third light beams. The splitting element reflects the first and the third light beams, and allows the second light beam to pass through. During a first time period, the first light beam is transmitted to a first position and the second light beam is transmitted to a second position. During a second time period, the third light beam is transmitted to the first position and the second light beam is transmitted to the second position. Furthermore, a projection apparatus is also provided.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: February 15, 2022
    Assignee: Coretronic Corporation
    Inventors: Hsin-Yueh Chang, Haw-Woei Pan, Chi-Tang Hsieh
  • Patent number: 11231589
    Abstract: Techniques for reducing weight on wearable display devices are described. In one embodiment of the present invention, a wearable display device includes no electronic components and is coupled to an enclosure by a transmission line including only one or more optical fibers, where the fiber is responsible for transporting the content or an optical image from one end of the optical fiber to another end thereof by total internal reflections within the fiber. The optical image is picked up by a focal lens from a microdisplay in the enclosure. The optical image is in lower resolution but received by the optical fiber at a twice speed as the normal refresh rate (e.g., 120 Hz vs. 60 Hz). Two successive images in lower resolution are combined at or near the other end of the optical fiber to generate a combined image at higher resolution, where the combined image is refreshed and perceived at the normal refresh rate.
    Type: Grant
    Filed: May 8, 2021
    Date of Patent: January 25, 2022
    Inventor: Darwin Hu
  • Patent number: 11228742
    Abstract: A projection system includes a signal processor, a light source, an optical relay system, an adjusting member, and a DMD. The signal processor receives image data. The signal processor increases grayscale values of pixels of the image data. The optical relay system provides illumination light to the DMD for modulating to obtain projection light required for a projection image. The adjusting member reduces the luminous flux of the illumination light provided to the DMD when the grayscale values of the pixels of the image data are increased. A reduction ratio of the luminous flux of the illumination light matches an increase ratio of the grayscale values of the image data. The DMD modulates the adjusted illumination light according to the image data with increased grayscale values to generate the projection light required for the projection image.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: January 18, 2022
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Zuqiang Guo, Peng Du, Yi Li
  • Patent number: 11215914
    Abstract: The invention relates to a method of manufacturing a microprojector for a projection display, wherein the microprojector comprises a support on which a projector lens array with a plurality of projector lenses is arranged, wherein on a side of the support facing away from the projector lens array, an object structure array with a plurality of e.g. identical object structures is arranged, wherein at least one projector lens is associated with one object structure such that the projections of the object structures superpose through the projector lenses to form a full image, wherein e.g. the distance between a projector lens and the associated object structures corresponds to the focal length of the respective projector lens, wherein on the object structure array, a condenser lens array is arranged such that in case of an illumination of the condenser lens array, a Köhler illumination of the object structures or projector lens associated with the respective condenser lenses is permitted.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: January 4, 2022
    Assignee: DOCTER OPTICS SE
    Inventor: Sven Fröhlich
  • Patent number: 11215910
    Abstract: A light source device includes a laser optical system, a fluorescence optical system, and a light combiner combining first and second outgoing lights from the laser optical system and the fluorescent optical system. The laser optical system includes first laser optical sources emitting a plurality of outgoing lights respectively, the plurality of outgoing lights being blue, green, and red lights, or blue and red lights; a first dichroic mirror combining the plurality of outgoing lights from the first laser optical sources, and a diffusion plate reducing speckle noise and an uneven luminance of each of the plurality of outgoing lights. The fluorescence optical system includes a second laser light source, and a phosphor plate emitting, as the second outgoing light, a fluorescent light containing green and red lights by being excited by an outgoing light from the second laser light source. The light combiner includes a second dichroic mirror.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: January 4, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Takaaki Tanaka
  • Patent number: 11209725
    Abstract: An image display apparatus according to an embodiment of the present technology includes an optical modulator, an optical device, and a sensor unit. The optical device splits a modulated light beam modulated by the optical modulator into a first split light beam and a second split light beam, the first split light beam and the second split light beam each travelling in a different direction, and prevents a light beam, which backwardly travels on an optical path of the first split light beam and enters the optical device, from travelling along an optical path of the second split light beam. The sensor unit is disposed on the optical path of the second split light beam and detects a state of the second split light beam.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: December 28, 2021
    Assignee: SONY CORPORATION
    Inventors: Keisuke Homma, Kazuya Matsumoto
  • Patent number: 11212423
    Abstract: To propose an optical scanning method for a video device including an optical scanning unit in which one end of a light guide path has a protruding beam-shaped structure.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 28, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Takahiro Matsuda, Yoshiho Seo, Satoshi Ouchi, Shinsuke Onoe
  • Patent number: 11209687
    Abstract: A liquid-crystal spatial phase modulator includes: a liquid-crystal layer; a transparent electrode layer above the liquid-crystal layer; a lower electrode layer disposed below the liquid-crystal layer; a first heat-resistant layer that has higher thermal resistance than the transparent electrode layer and is disposed above and adjacent to the transparent electrode layer; and a second heat-resistant layer that has higher thermal resistance than the transparent electrode layer and is disposed between the transparent electrode layer and the liquid-crystal layer and adjacent to the transparent electrode layer. Light from above passes through the transparent electrode layer.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: December 28, 2021
    Assignee: Santec Corporation
    Inventor: Yasuki Sakurai
  • Patent number: 11204544
    Abstract: A projector includes a first light source device configured to emit first light having a first wavelength band, a second light source device configured to emit second light having a second wavelength band, a first light modulator configured to modulate the first light, and a second light modulator configured to modulate the second light. The first light source device includes a first light emitting element configured to emit excitation light and a wavelength converter configured to convert the excitation light into the first light. The second light source device includes a second light emitting element configured to emit the second light, a diffuser configured to diffuse the second light, and an optical element having an aspherical surface. The optical element is disposed on an optical path of the second light between the diffuser and the second light modulator and is configured to increase field curvature on the second light modulator.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: December 21, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11199765
    Abstract: An illumination system comprises a blue light source, an excitation light source, a first dichroic element and a wavelength converting element. The blue light source provides a blue light beam. An excitation light source provides an excitation beam. The first dichroic element is disposed on transmitting paths of the blue light beam and the excitation beam. The wavelength converting element is disposed on a transmitting path of the excitation beam and adapted to convert the excitation beam into an excited beam. The excitation beam passes through the first dichroic element to the wavelength converting element and converted into the excited beam. The excited beam is transmitted to the first dichroic element and reflected. A wavelength of the blue light beam is greater than a wavelength of the excitation beam, and the blue light source and the excitation light source are disposed on the same side of the first dichroic element.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: December 14, 2021
    Assignee: Coretronic Corporation
    Inventors: Haw-Woei Pan, Chih-Hsien Tsai
  • Patent number: 11199766
    Abstract: An illumination system and a projection device, including a light emitting module, a light uniforming element, and a beam splitting/combining module, are provided. The light emitting module includes red and blue light elements. The light uniforming element has an optical axis and a light entrance surface. The beam splitting/combining module is disposed on a transmission path of at least one blue light beam, is located between the light emitting module and the light uniforming element, and includes at least one beam splitting element and at least one reflective element. At least one among the red and the blue light beams is reflected by the reflective element and the beam splitting element. The red and blue light beams are transmitted to the light uniforming element in a direction parallel to the optical axis, and a speckle distribution on the light entrance surface is symmetrical with respect to the optical axis.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: December 14, 2021
    Assignee: Coretronic Corporation
    Inventor: Chen-Wei Fan
  • Patent number: 11199764
    Abstract: A light wavelength conversion element is configured to receive an excitation beam from a light incident side, comprising a substrate and a light wavelength conversion substance. The substrate has a surface facing the light incident side. The surface has at least one microstructure protruded toward the light incident side. The light wavelength conversion substance is disposed on the surface and covers the at least one microstructure. The light wavelength conversion substance is excited by the excitation beam and emits a conversion beam. The excitation beam forms an exciting light spot on the light wavelength conversion substance. The energy density distribution of the exciting light spot has at least one peak value. A position corresponding to the at least one peak value on the light wavelength conversion substance corresponds to a position of the at least one microstructure. Additionally, a projection apparatus is provided.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: December 14, 2021
    Assignee: Coretronic Corporation
    Inventors: Jia-Hong Dai, Te-Ying Tsai, Chia-Lun Tsai, Chuan-Hui Liu
  • Patent number: 11199763
    Abstract: A projector includes a light source, a collimator lens, a wavelength conversion module and a dichroic filter. The light source provides a first beam. The collimator lens has a first portion and a second portion. The wavelength conversion module includes a reflecting plate and a wavelength conversion layer. The wavelength conversion layer is an annular structure disposed on the reflecting plate. The dichroic filter corresponds to the first portion of the collimator lens. The dichroic filter reflects the first beam to project onto the reflecting plate and the wavelength conversion layer. A second beam reflected by the reflecting plate passes through the second portion of the collimator lens. A third beam excited by the wavelength conversion layer passes through the first portion and the second portion of the collimator lens and the dichroic filter.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: December 14, 2021
    Assignee: Qisda Corporation
    Inventors: Chih-Shiung Chien, Ming-Kuen Lin, Tsung-Hsun Wu
  • Patent number: 11190739
    Abstract: An illuminator includes a first laser light source section that outputs a first light flux that belongs to a first wavelength band, a second laser light source section that outputs a second light flux that belongs to a second wavelength band, a third laser light source section that outputs a third light flux that belongs to a third wavelength band and has a polarization direction different from those of the first and second light fluxes, a light combiner that combines the first, second, and third light fluxes to produce combined light, and a predetermined band retardation film on the downstream of the light combiner that changes the phase of a light flux that forms the combined light and belongs to the third wavelength band, and the polarization directions of the light fluxes contained in the combined light are aligned on the downstream of the predetermined band retardation film.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: November 30, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 11184591
    Abstract: A projection device includes a projection lens, a first laser light source, a second laser light source and a polarization direction. The first laser light source and the second laser light source respectively emit a first laser light to the projection lens through a laser optical path, wherein the first laser light has a first polarization direction. The polarization direction conversion layer is disposed on the laser optical path and configured to convert the first laser light of the first laser light source into a second laser light, wherein the second laser light has a second polarization direction different from the first polarization direction.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: November 23, 2021
    Assignees: BENQ CORPORATION, BenQ Intelligent Technology (Shanghai) Co., Ltd
    Inventors: Chen-Cheng Huang, Shuang-Xi Lin
  • Patent number: 11172177
    Abstract: A projection system including at least a light source, at least a dichroic filter element and a light-adjusting diaphragm element is provided. The light source is configured to emit a first color light having a spectrum of a first wavelength range and a second color light having a spectrum of a second wavelength range. The dichroic filter element is configured to reflect or allow the first color light and the second color light to pass through. The light-adjusting diaphragm element has a filter and is located on an optical path generated after the first color light and the second color light are split. The first color light passes through the filter, which blocks at least a part of the energy of the second color light, such that a transmittance of the spectrum of the first wavelength range is greater than that of the spectrum of the second wavelength range.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: November 9, 2021
    Assignees: BenQ Intelligent Technology (Shanghai) Co., Ltd, BENQ CORPORATION
    Inventors: Yuan-Chen Liao, Chen-Cheng Huang
  • Patent number: 11156825
    Abstract: A projector includes: a phosphor wheel that, in response to the irradiation of excitation light that is used as the first illumination light, generates fluorescence that contains second illumination light and third illumination light and emits the excitation light and fluorescence in opposite directions; first to third image display elements that are provided corresponding to the first to third illumination light; a first illumination optical system that guides the excitation light that was emitted from the phosphor wheel to the first image display element; and a second illumination optical system and third illumination optical system that guide the second illumination light and third illumination light that are contained in the fluorescence emitted from the phosphor wheel to the second image display element and to the third image display element. The lengths of the optical paths of the first, second, and third illumination optical systems are the same.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: October 26, 2021
    Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Atsushi Kato
  • Patent number: 11152758
    Abstract: A light emitting device includes a base having a bottom part, a first semiconductor laser element disposed on the bottom part of the base, and a first light reflecting member disposed on the bottom part of the base. The first light reflecting member has a light reflecting surface configured to reflect light emitted from the first semiconductor laser element. The light reflecting surface of the first light reflecting member is a curved surface configured such that, with respect to the major portion of the light emitted from the first semiconductor laser element, the beam divergence angle of the light reflected by the light reflecting surface is greater than zero and smaller than the beam divergence angle of the light irradiating the light reflecting surface.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: October 19, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Soichiro Miura, Tatsuya Kanazawa