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公开(公告)号：US12242056B2
公开(公告)日：2025-03-04
申请号：US18295048
申请日：2023-04-03
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Zhongyan Sheng , Xi Zhou
Abstract: An apparatus includes a light source configured to produce light and a prism. The apparatus also includes freeform optics optically coupled between the light source and the prism, the freeform optics configured to direct the light towards the prism and eyepiece optics optically coupled to the prism. Additionally, the apparatus includes a spatial light modulator (SLM) optically coupled to the prism, the prism configured to direct the light towards the SLM, the SLM configured to modulate the light to produce modulated light, and the prism configured to direct the modulated light towards the eyepiece optics.
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公开(公告)号：US20230058323A1
公开(公告)日：2023-02-23
申请号：US17849472
申请日：2022-06-24
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng , Shashank Dabral , Ganapathy Sivakumar
IPC: F21S41/63 , F21S41/25 , F21S41/153 , F21V23/04
Abstract: An example includes a system, having: an illumination source configured to produce illumination light; and a spatial light modulator (SLM) optically coupled to the illumination source, the SLM comprising an array of picture elements. The SLM is configured to: receive the illumination light; direct, by a first portion of the picture elements, on state light in a first direction; and direct, by a second portion of the picture elements, off state light in a second direction. The example system includes imaging optics optically coupled to the SLM, the imaging optics configured to receive the on state light from the SLM and to project an image as an image portion of a beam; and non-imaging optics optically coupled to the SLM, the non-imaging optics configured to receive the off state light from the SLM and to project the off state light as part of the beam.
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公开(公告)号：US10785459B2
公开(公告)日：2020-09-22
申请号：US16235883
申请日：2018-12-28
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng , Gregory Scott Pettitt
Abstract: In described examples, a digital light processing color projector includes light emitters configured to collectively emit light at multiple wavelengths, multiple light directing elements forming an illumination path having at least one aperture stop, a micromirror array coupled to a substrate, an aperture located at the aperture stop, and a filter with a selected color transmittance profile located at or near the aperture stop. The light directing elements are configured to direct light towards the micromirror array as illumination light. An aperture width determines a diameter of the illumination light. A micromirror on-state reflects the illumination light as on-state light. The substrate reflects the illumination light as flat-state light. The light directing elements direct on-state light through the aperture to a projector output. The filter filters flat-state light in an overlap region of the on-state light and flat-state light, or an illumination light portion corresponding to overlap region.
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公开(公告)号：US20160077419A1
公开(公告)日：2016-03-17
申请号：US14854260
申请日：2015-09-15
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng
IPC: G03B21/20
CPC classification number: G03B21/2073 , G03B21/204 , G03B33/08
Abstract: An embodiment of an apparatus for image projection includes a laser providing a first color light, a plurality of dichroic polarizing beam splitters (DPBSs), a plurality of switchable half-wave plates paired with a respective DPBS and positioned between the laser and the respective DPBS, a quarter-wave plate backed by a mirror and positioned to receive a first beam from a respective DPBS, and a plurality of static phosphor devices that are each positioned to receive either the first beam or the second beam from a respective DPBS and to emit light in a respective color. The emitted light from the phosphor devices and the beam that is reflected from the mirror are directed towards an output by one or more respective DPBSs. A method switches the switchable half-wave plates as necessary to provide separate images in a plurality of colors.
Abstract translation: 用于图像投影的装置的实施例包括提供第一颜色光的激光器，多个二向色偏振分束器（DPBS），多个可切换半波片，其与相应的DPBS配对并且位于激光器和相应的DPBS之间 由反射镜支撑并定位成接收来自相应DPBS的第一光束的四分之一波片，以及多个静电荧光体装置，每个静态磷光体装置被定位成从相应的DPBS接收第一光束或第二光束，并且发射 各种颜色的光。 来自荧光体装置的发射光和从反射镜反射的光束被一个或多个相应的DPBS指向输出。 一种方法根据需要切换可切换的半波片以提供多种颜色的分开的图像。
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公开(公告)号：US20240428434A1
公开(公告)日：2024-12-26
申请号：US18826554
申请日：2024-09-06
Applicant: Texas Instruments Incorporated
Inventor： Srikanth Gurrapu , Yangxi Wang , Zhongyan Sheng
Abstract: Described examples include an apparatus includes a spatial light modulator configured to receive input light; and modulate the input light, to produce modulated light, where the modulated light has a pixel pattern of dark pixels and bright pixels. The apparatus also includes a diffractive optical element optically coupled to the spatial light modulator, the diffractive optical element configured to: receive the modulated light; and modulate the pixel pattern of dark pixels and bright pixels, to produce a structured light pattern, the structured light pattern having dark regions and bright regions, the bright regions each having the pixel pattern of dark pixels and bright pixels.
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Patent Agency Ranking
公开(公告)号：US11865783B2
公开(公告)日：2024-01-09
申请号：US18046957
申请日：2022-10-17
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng , Alexander Lyubarsky , Stephen Aldridge Shaw , Michael Terry Davis
IPC: B29C64/277 , B33Y30/00 , G02B3/00 , G02B17/04 , G02B27/09
CPC classification number: B29C64/277 , B33Y30/00 , G02B3/0006 , G02B17/04 , G02B27/0977
Abstract: Described examples a three-dimensional printer includes a vat having a transparent bottom, the vat configured to contain a photo-polymerizing resin and a lift plate movably positioned within the vat. The three-dimensional printer also includes an optical device configured to project a pattern of light through the transparent bottom. The optical device includes a light source configured to provide light at a light source output and a light integrator configured to provide divergent light at a light integrator output responsive to the light at the light source output. The optical device also includes projection optics configured to project projection output light at an optics output through the transparent bottom responsive to a modulated light at the optics input and a spatial light modulator configured to provide the modulated light responsive to the divergent light.
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公开(公告)号：US11498276B2
公开(公告)日：2022-11-15
申请号：US16520249
申请日：2019-07-23
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng , Alexander Lyubarsky , Stephen Aldridge Shaw , Michael Terry Davis
IPC: B29C64/277 , B33Y30/00 , G02B3/00 , G02B17/04 , G02B27/09
Abstract: Described examples include an optical device, having a light source with a light source output and a light integrator having a light integrator input and a light integrator output, the light integrator input optically coupled to the light source output, and the light integrator configured to provide divergent light at the light integrator output responsive to the light at the light source output. The optical device also has projection optics with an optics input and an optics output, the projection optics configured to project output light at the optics output responsive to modulated light at the optics input, in which a focal point of the optics input matches a divergence of the modulated light and a spatial light modulator optically coupled between the light integrator output and the optics input, the spatial light modulator configured to provide the modulated light responsive to the divergent light.
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公开(公告)号：US09756300B2
公开(公告)日：2017-09-05
申请号：US14537036
申请日：2014-11-10
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng
CPC classification number: H04N9/3173 , G02B17/04 , G02B19/0023 , G02B19/0066 , G03B21/008 , G03B21/2013 , G03B21/2033 , G03B21/2066 , G03B21/28 , H04N9/3102 , H04N9/3176
Abstract: A compact optical projection apparatus. An apparatus for light projection includes at least one illumination device; a cover prism including a curved surface positioned to receive illumination light rays and a total internal reflection surface positioned to internally reflect the light rays towards an asymmetric reflector surface positioned opposite the total internal reflection surface, the asymmetric reflector surface configured to reflect the received light rays out of the cover prism at an emitter side of the cover prism; a spatial light modulating the illumination light rays with image data to form image light rays; a reverse total internal reflection (RTIR) prism positioned between the spatial light modulator and the emitter side of the cover prism and further comprising a total internal reflection surface configured to totally internally reflect the image light rays out of the RTIR prism into a light projection device. Additional apparatus are disclosed.
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公开(公告)号：US20150138446A1
公开(公告)日：2015-05-21
申请号：US14537036
申请日：2014-11-10
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng
CPC classification number: H04N9/3173 , G02B17/04 , G02B19/0023 , G02B19/0066 , G03B21/008 , G03B21/2013 , G03B21/2033 , G03B21/2066 , G03B21/28 , H04N9/3102 , H04N9/3176
Abstract: A compact optical projection apparatus. An apparatus for light projection includes at least one illumination device; a cover prism including a curved surface positioned to receive illumination light rays and a total internal reflection surface positioned to internally reflect the light rays towards an asymmetric reflector surface positioned opposite the total internal reflection surface, the asymmetric reflector surface configured to reflect the received light rays out of the cover prism at an emitter side of the cover prism; a spatial light modulating the illumination light rays with image data to form image light rays; a reverse total internal reflection (RTIR) prism positioned between the spatial light modulator and the emitter side of the cover prism and further comprising a total internal reflection surface configured to totally internally reflect the image light rays out of the RTIR prism into a light projection device. Additional apparatus are disclosed.
Abstract translation: 一种紧凑的光学投影装置。 一种用于光投射的装置包括至少一个照明装置; 覆盖棱镜，其包括被定位成接收照明光线的弯曲表面和设置成将所述光线内部反射到与所述全内反射表面相对定位的不对称反射器表面的全内反射表面，所述非对称反射器表面被配置为反射所接收的光线 在盖棱镜的发射器侧处的盖棱镜外面; 利用图像数据调制照明光线以形成图像光线的空间光; 位于空间光调制器和盖棱镜的发射极侧之间的反向全内反射（RTIR）棱镜，还包括全内反射表面，其被配置为将从所述RTIR棱镜的图像光线全部内反射到光投射装置 。 公开了附加装置。
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公开(公告)号：US20250003853A1
公开(公告)日：2025-01-02
申请号：US18343423
申请日：2023-06-28
Applicant: Texas Instruments Incorporated
Inventor： Kaichien Tsai , Boyu Shen , Zhongyan Sheng
Abstract: Techniques are described herein for air quality sensing. In some examples, the techniques are implemented as an apparatus including first and second light sources, a light detector having a detector output, and a processing circuit having a processing input coupled to the detector output and a processing output. The first light source is configured to generate a first light signal having a first wavelength. The second light source is configured to generate a second light signal having a second wavelength different from the first wavelength. The light detector is configured to generate a first detection signal at the detector output responsive to the first light signal and a second detection signal at the detector output responsive to the second light signal. The processing circuit is configured to generate a third signal representative of an air quality measurement at the processing output responsive to the first and second detection signals.
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