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    Methods and apparatus for intrinsically safe laser sourced illumination
    1.
    发明授权
    Methods and apparatus for intrinsically safe laser sourced illumination 有权

    公开(公告)号：US11067241B2

    公开(公告)日：2021-07-20

    申请号：US14925328

    申请日：2015-10-28

    Applicant: Texas Instruments Incorporated

    Inventor： Vikrant R. Bhakta

    IPC: F21S41/125 ,  F21S41/37 ,  F21S41/20 ,  F21S41/32 ,  F21S41/16 ,  F21S45/70 ,  F21S41/176 ,  F21S41/13 ,  F21S41/43

    Abstract: Intrinsically safe laser sourced illumination. A system for illumination is disclosed, including a plurality of laser illumination sources configured to transmit laser beams; a dichroic mirror spaced from the plurality of laser illumination sources and having an aperture configured to allow the laser beams to pass through the dichroic mirror, the remaining surfaces of the dichroic mirror configured to reflect the laser beams; a phosphor element spaced from the dichroic mirror and coated with a substance to fluoresce when struck by the laser beams and configured to disperse the laser beams and to output combined light that includes fluorescent light and the dispersed laser beams; and an illumination output arranged to receive the combined light from the phosphor element and to output illuminating light containing both the fluorescent light and the dispersed laser beams. Methods are also disclosed.

    Methods and apparatus for illumination with DMD and laser modulated adaptive beam shaping
    3.
    发明授权
    Methods and apparatus for illumination with DMD and laser modulated adaptive beam shaping 有权

    公开(公告)号：US10107467B2

    公开(公告)日：2018-10-23

    申请号：US14678950

    申请日：2015-04-04

    Applicant: Texas Instruments Incorporated

    Inventor： Vikrant R. Bhakta

    IPC: F21V11/00 ,  F21S41/675 ,  F21S8/10 ,  G02B26/08 ,  G02B27/09 ,  F21S41/14 ,  F21S41/65

    Abstract: Illumination with DMD and laser modulated adaptive beam shaping. A DMD illumination system includes a plurality of laser illumination sources, each of the plurality of illumination sources directing light onto a phosphor arranged between the plurality of laser illumination sources and a digital micro-mirror device; 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 to each of the plurality of laser illumination sources, so that the light from the plurality of laser illumination sources strikes the phosphor and is then directed from the phosphor onto the array of micro-mirrors in the digital micro-mirror device when the micro-mirrors are at a predetermined position, and the light is reflected from the digital micro-mirror device and out of the system. Methods are also disclosed.

    Projector with optical conversion media pumped by low etendue source
    5.
    发明授权
    Projector with optical conversion media pumped by low etendue source 有权
    具有低光通量源泵浦的光学转换介质的投影机

    公开(公告)号：US09568816B2

    公开(公告)日：2017-02-14

    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 ,  H04N9/31 ,  G02B26/00 ,  G02B27/48 ,  G02B26/10 ,  G02B27/10 ,  G02B27/14

    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，扩散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。

    Pixelated Projection for Automotive Headlamp
    6.
    发明申请
    Pixelated Projection for Automotive Headlamp 审中-公开
    汽车前照灯的像素投影

    公开(公告)号：US20150377442A1

    公开(公告)日：2015-12-31

    申请号：US14752825

    申请日：2015-06-26

    Applicant: Texas Instruments Incorporated

    Inventor： Vikrant R. Bhakta ,  Jeffrey Scott Farris

    IPC: F21S8/10 ,  F21K99/00

    CPC classification number: F21S41/141 ,  F21S41/25 ,  F21S41/675

    Abstract: An automotive headlamp is provided that includes a digital micromirror device (DMD) headlight module, the DMD headlight module including a DMD, a white light module to provide a white light beam to illuminate the DMD, illumination optics optically coupled between the DMD and the white light module to prepare the white light beam for illuminating the DMD, and projection optics optically coupled to the DMD to receive pixelated light reflected by the DMD and project a pixelated light beam on road, in which at least one of the DMD, the white light module, and the illumination optics shape a beam profile of the white light beam such that the light reflected by the DMD has a pixelated non-uniform beam profile suitable for projecting a white light beam that forms a portion of a white light beam of the headlamp.

    Abstract translation: 提供了一种汽车前照灯，其包括数字微镜装置（DMD）头灯模块，DMD头灯模块包括DMD，提供白光束以照亮DMD的白光模块，光耦合在DMD和白色之间的照明光学元件 光模块以准备用于照亮DMD的白光束，以及光学耦合到DMD的投影光学元件，以接收由DMD反射的像素化光并在道路上投影像素化光束，其中至少一个DMD，白光 模块，并且照明光学器形成白光束的光束轮廓，使得由DMD反射的光具有适于投射白光束的像素化不均匀的光束轮廓，所述白色光束形成前照灯的白光束的一部分 。

    PIXELATED PROJECTION FOR AUTOMOTIVE HEADLAMP
    9.
    发明申请
    PIXELATED PROJECTION FOR AUTOMOTIVE HEADLAMP 审中-公开

    公开(公告)号：US20190017671A1

    公开(公告)日：2019-01-17

    申请号：US16119933

    申请日：2018-08-31

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Vikrant R. Bhakta ,  Jeffrey Scott Farris

    IPC: F21S41/141 ,  F21S41/675 ,  F21S41/25

    Abstract: To generate a projected light beam, a headlamp includes: a light source to provide light; and a digital micromirror device (DMD). Illumination optics are optically coupled between the light source and the DMD to illuminate the DMD with the light from the light source. The DMD is arranged to reflect the light as pixelated light. Projection optics are optically coupled to the DMD to project the pixelated light as a mid-beam portion of the projected light beam. The mid-beam portion has a non-uniform mid-range beam profile shaped by at least the DMD and the illumination optics. A field of view and an intensity of the projected light beam are controllable by the light source and the DMD. Also, the headlamp includes a high beam module to provide a high beam portion of the projected light beam.

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