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    PROJECTOR WITH OPTICAL CONVERSION MEDIA PUMPED BY LOW ETENDUE SOURCE
    31.
    发明申请
    PROJECTOR WITH OPTICAL CONVERSION MEDIA PUMPED BY LOW ETENDUE SOURCE 有权
    投影机具有低转换源的光转换介质

    公开(公告)号：US20150146174A1

    公开(公告)日：2015-05-28

    申请号：US14543859

    申请日：2014-11-17

    Applicant: Texas Instruments Incorporated

    Inventor： John Marshall Ferri ,  Sajjad Ali Khan ,  Michael Terry Davis ,  Vikrant R. Bhakta

    IPC: G03B21/20

    CPC classification number: G03B21/204 ,  G02B26/008 ,  G02B26/105 ,  G02B27/1033 ,  G02B27/141 ,  G02B27/148 ,  G02B27/48 ,  H04N9/3161

    Abstract: A projector system with a single imaging array has a low-etendue light source. The projector system includes a first optical path from the low-etendue light source to a plurality of optical conversion media having a plurality of emission wavelengths to provide display light with wavelengths longer than blue light. The projector system includes a second optical path from the optical conversion media to the imaging array. The projector system has a means of moving an excitation location on the optical conversion media in the first optical path. The projector system may include a blue LED, a diffuser region, or an optical conversion medium with a blue emission wavelength to provide blue display light. Light from the low-etendue light source is prevented from directly impinging on the imaging array.

    Abstract translation: 具有单个成像阵列的投影仪系统具有低光通量的光源。 投影仪系统包括从低透光率光源到具有多个发射波长的多个光学转换介质的第一光路，以提供长于蓝光的波长的显示光。 投影仪系统包括从光学转换介质到成像阵列的第二光路。 投影仪系统具有在第一光路中的光学转换介质上移动激发位置的装置。 投影仪系统可以包括蓝色LED，漫射器区域或具有蓝色发射波长的光学转换介质以提供蓝色显示光。 防止来自低光照度光源的光直接照射在成像阵列上。

    QUASI-SPARSE OPTICAL ILLUMINATION
    32.
    发明申请
    QUASI-SPARSE OPTICAL ILLUMINATION 审中-公开

    公开(公告)号：US20200224846A1

    公开(公告)日：2020-07-16

    申请号：US16829079

    申请日：2020-03-25

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta

    IPC: F21S41/675 ,  F21S41/20 ,  F21S41/365 ,  F21S41/25 ,  F21S41/36 ,  B60Q1/076 ,  B60Q1/14

    Abstract: In described examples, a DMD includes micromirrors. A first light source generates a first beam profile illuminating a first set of micromirrors of the DMD. A second light source generates a second beam profile illuminating a second set of micromirrors of the DMD. The first and second beam profiles partially overlap on at least some micromirrors of the DMD. The first light source is source-modulated independently of the second light source for adjusting power and brightness in response to a sensed driving condition. The micromirrors of the DMD are modulated in response to the sensed driving condition.

    Methods and apparatus for light efficient programmable headlamp with anamorphic optics
    33.
    发明授权
    Methods and apparatus for light efficient programmable headlamp with anamorphic optics 有权

    公开(公告)号：US10436409B2

    公开(公告)日：2019-10-08

    申请号：US15144170

    申请日：2016-05-02

    Applicant: Texas Instruments Incorporated

    Inventor： Vikrant R. Bhakta ,  Alexander Lyubarsky

    IPC: F21S41/20 ,  F21S41/64 ,  F21S41/675 ,  F21S41/255 ,  F21S41/265

    Abstract: In described examples of a headlamp to project a beam of light from a lens, the headlamp includes: an illumination module to output a light beam to an illumination path; and illumination optics to receive the light beam and to provide illumination to a programmable spatial light modulator. The programmable spatial light modulator is arranged to receive the illumination and to output non-uniform illumination as patterned light to projection optics. The projection optics are arranged to receive the patterned light and to output the patterned light through the lens. At least one of the illumination optics and the projection optics includes an anamorphic lens to shape the light beam.

    QUASI-SPARSE OPTICAL ILLUMINATION
    34.
    发明申请
    QUASI-SPARSE OPTICAL ILLUMINATION 审中-公开

    公开(公告)号：US20190145601A1

    公开(公告)日：2019-05-16

    申请号：US16248513

    申请日：2019-01-15

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta

    IPC: F21S41/675 ,  F21S41/36 ,  B60Q1/14 ,  F21S41/25 ,  B60Q1/076

    Abstract: In described examples, a DMD includes micromirrors. A first light source generates a first beam profile illuminating a first set of micromirrors of the DMD. A second light source generates a second beam profile illuminating a second set of micromirrors of the DMD. The first and second beam profiles partially overlap on at least some micromirrors of the DMD. The first light source is source-modulated independently of the second light source for adjusting power and brightness in response to a sensed driving condition. The micromirrors of the DMD are modulated in response to the sensed driving condition.

    METHODS AND APPARATUS FOR ILLUMINATION WITH LASER MODULATED ADAPTIVE BEAM SHAPING
    35.
    发明申请
    METHODS AND APPARATUS FOR ILLUMINATION WITH LASER MODULATED ADAPTIVE BEAM SHAPING 审中-公开

    公开(公告)号：US20190056081A1

    公开(公告)日：2019-02-21

    申请号：US16167080

    申请日：2018-10-22

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta

    IPC: F21S41/675 ,  F21S41/16 ,  G02B26/08

    Abstract: An illumination system includes at least first and second laser illumination sources. A down converter material emits light when illuminated by one or more of the laser illumination sources. The first laser illumination source is arranged to illuminate only a first portion of the down converter material. The second laser illumination source is arranged to illuminate only a second portion of the down converter material. Control circuitry causes the first laser illumination source to adaptively vary a first intensity of illuminating the first portion of the down converter material, causes the second laser illumination source to adaptively vary a second intensity of illuminating the second portion of the down converter material, and causes the light modulator to allow a selected amount of the down converter material's emitted light to be projected from the system.

    Quasi-sparse optical illumination
    36.
    发明授权
    Quasi-sparse optical illumination 有权

    公开(公告)号：US10180224B2

    公开(公告)日：2019-01-15

    申请号：US15659600

    申请日：2017-07-25

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta

    IPC: F21S41/675 ,  F21S41/25 ,  F21S41/36 ,  B60Q1/076 ,  B60Q1/14 ,  B60Q1/12 ,  F21S41/141

    Abstract: In described examples, a DMD includes micromirrors. A first light source generates a first beam profile illuminating a first set of micromirrors of the DMD. A second light source generates a second beam profile illuminating a second set of micromirrors of the DMD. The first and second beam profiles partially overlap on at least some micromirrors of the DMD. The first light source is source-modulated independently of the second light source for adjusting power and brightness in response to a sensed driving condition. The micromirrors of the DMD are modulated in response to the sensed driving condition.

    Multiple illumination sources for DMD lighting apparatus and methods
    38.
    发明授权
    Multiple illumination sources for DMD lighting apparatus and methods 有权

    公开(公告)号：US09658447B2

    公开(公告)日：2017-05-23

    申请号：US14506049

    申请日：2014-10-03

    Applicant: Texas Instruments Incorporated

    Inventor： Vikrant R. Bhakta

    IPC: G02B26/08 ,  F21S8/10

    CPC classification number: G02B26/0833 ,  F21S41/14 ,  F21S41/147 ,  F21S41/16 ,  F21S41/663 ,  F21S41/675

    Abstract: A DMD illumination system having multiple illumination sources. A DMD illumination system is provided that includes a plurality of illumination sources, each of the illumination sources directing light onto the digital micro-mirror device corresponding to a respective position of an array of micro-mirrors, each illumination source being positioned to cause reflected light from the array of micro-mirrors to be projected out of the system, and control circuitry coupled to the plurality of illumination sources and to the digital micro-mirror device configured for controlling the position of the array of micro-mirrors and further configured for providing control signals for turning each of the plurality of illumination sources on and off, so that the light from the plurality of illumination sources strikes the array of micro-mirrors and the light is reflected from the digital micro-mirror device and out of the system. Methods are also disclosed.

    Shared-path illumination and excitation optics apparatus and systems
    39.
    发明授权
    Shared-path illumination and excitation optics apparatus and systems 有权
    共享路径照明和激励光学装置和系统

    公开(公告)号：US09554101B2

    公开(公告)日：2017-01-24

    申请号：US14583764

    申请日：2014-12-28

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta

    IPC: H04N9/31 ,  F21V8/00 ,  G02B27/09 ,  G02B26/00 ,  G03B21/20 ,  G02B27/42

    CPC classification number: H04N9/3111 ,  G02B6/0096 ,  G02B26/008 ,  G02B27/0927 ,  G02B27/0994 ,  G02B27/4244 ,  G03B21/208 ,  H04N9/3158

    Abstract: A Gaussian-distributed excitation light beam of an excitation spectrum emitted from an excitation light source enters a light pipe and is there converted to a top-hat spatially distributed excitation beam. The top-hat distributed excitation beam is focused on a phosphor-coated or reflective portion of a surface of an optical wavelength conversion element. Fluoresced and reflected beams travel outward from the wavelength conversion element and re-enter the light pipe to be homogenized during transit through the light pipe. A homogenized fluoresced or reflected beam is relayed to an output as one of a sequence of colors of homogenized light. The functions of Gaussian to top-hat conversion of the excitation beams directed toward the optical conversion element and homogenization of beams directed outward from the optical conversion element are both efficiently performed using a single, shared light pipe.

    Abstract translation: 从激发光源发射的激发光谱的高斯分布激发光束进入光管，并转换成顶帽空间分布的激发光束。 顶帽分布式激发光束聚焦在光波长转换元件的表面的磷光体涂覆或反射部分上。 荧光和反射光束从波长转换元件向外移动，并在透过光管的过程中重新进入光管以使其均匀化。 均匀化的荧光或反射光束被中继到输出作为均匀光的一系列颜色之一。 使用单个共用的光管来有效地执行高斯到朝向光转换元件的激发光束的顶帽转换和从光转换元件向外指向的光束的均匀化的功能。

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