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    LED illumination with red laser assist
    1.
    发明授权
    LED illumination with red laser assist 有权

    公开(公告)号：US11586101B2

    公开(公告)日：2023-02-21

    申请号：US17173025

    申请日：2021-02-10

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Gregory S. Pettitt ,  John M. Ferri

    IPC: G03B21/00 ,  G03B21/20 ,  G02B5/26 ,  G02B27/28

    Abstract: A system includes a red light emitting diode (LED), a blue LED, and a green LED. The system also includes a red laser, a first filter, a second filter, and a lens. The system includes a first optical path that includes the red LED, the red laser, the first filter, the second filter, and the lens, where the first filter has a filter response to transmit red light from the red laser and to reflect red light from the red LED. The system also includes a second optical path that includes the blue LED, the green LED, the second filter, and the lens, where the second filter has a filter response to transmit blue light from the blue LED, to transmit green light from the green LED, to reflect red light from the red laser, and to reflect red light from the red LED.

    METHODS AND APPARATUS FOR REDUCING GHOST IMAGES IN REFLECTIVE IMAGER-BASED PROJECTORS
    4.
    发明申请
    METHODS AND APPARATUS FOR REDUCING GHOST IMAGES IN REFLECTIVE IMAGER-BASED PROJECTORS 审中-公开
    用于减少基于图像的投影仪中的GHOST图像的方法和装置

    公开(公告)号：US20140368797A1

    公开(公告)日：2014-12-18

    申请号：US13927842

    申请日：2013-06-26

    Applicant: Texas Instruments Incorporated

    Inventor： John M. Ferri ,  Patrick R. Destain

    IPC: H04N5/74

    CPC classification number: H04N5/7458 ,  H04N9/3167

    Abstract: An image projection system (300, 400) uses a polarized illumination source (306) in conjunction with a linear polarizer (314) located before and a quarter-wave retarder (312) located after an imager field lens 118 along a projection optical axis (216) between a spatial light modulator reflective imager (120) and a projection lens (122). The combination serves to block illumination light (210a) reflected off the imager field lens (314) and other optics (408, 411), while passing illumination light (210c) modulated by ON-state reflector elements of the reflective imager 120. The reduction of ghost reflections and stray light improves dark state (OFF-state reflector element) contrast.

    Abstract translation: 图像投影系统（300,400）使用偏振照明源（306）与位于成像器场透镜118之前的线偏振器（314）和位于投影光轴（31）之后的四分之一波长延迟器（312） 216）在空间光调制器反射成像器（120）和投影透镜（122）之间。 该组合用于阻挡从成像器场透镜（314）和其它光学器件（408,411）反射的照明光（210a），同时通过由反射成像器120的ON状态反射器元件调制的照明光（210c）。 的鬼影和杂散光改善暗态（关状态反射元件）的对比度。

    SPECTRAL FILTERING OF PHOSPHOR COLOR WHEELS
    5.
    发明申请
    SPECTRAL FILTERING OF PHOSPHOR COLOR WHEELS 有权
    磷光色轮的光谱过滤

    公开(公告)号：US20130100420A1

    公开(公告)日：2013-04-25

    申请号：US13660663

    申请日：2012-10-25

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： John M. Ferri ,  Gregory S. Pettitt

    IPC: G03B21/14

    CPC classification number: G03B21/204 ,  G03B21/14 ,  G03B21/208 ,  G03B21/28 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/3158 ,  H04N9/3161

    Abstract: A projection light source has a source of laser light of a first color. A first member has first and second phosphor material segments respectively configured to emit light of second and third colors when illuminated by the laser light of the first color. A second member has first and second dichroic filter segments respectively configured to pass the light of the second and third colors emitted by the first and second phosphor material segments, while blocking light of the others of the first, second and third colors. Relative placements of the first and second members are synchronized to periodically align the first member with the laser light source and the second member with the first member, so that the first dichroic filter segment will pass the second color along a path at first time intervals when the second color is emitted by the first phosphor material and the second dichroic filter segment will pass the third color along at least a same portion of the path at second time intervals when the third color is emitted by the second phosphor material.

    Abstract translation: 投影光源具有第一颜色的激光源。 第一构件具有第一和第二荧光体材料段，其分别配置成当由第一颜色的激光照射时发射第二和第三颜色的光。 第二构件具有第一和第二二向色滤光片段，其分别被配置为使由第一和第二荧光体材料片段发射的第二和第三颜色的光通过，同时阻挡第一，第二和第三颜色中的其他颜色的光。 第一和第二构件的相对放置是同步的，以使第一构件与激光光源和第二构件周期地对准第一构件，使得第一分色滤光片段将以第一时间间隔沿着路径通过第二颜色， 当第二荧光体材料发射第三颜色时，第二颜色由第一荧光体材料发射，并且第二二向色滤光片段将以第二时间间隔沿路径的至少相同部分通过第三颜色。

    LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES
    7.
    发明申请
    LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES 审中-公开

    公开(公告)号：US20170269465A1

    公开(公告)日：2017-09-21

    申请号：US15606925

    申请日：2017-05-26

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： William M. Bommersbach ,  Gregory S. Pettitt ,  John M. Ferri ,  Sajjad Khan

    IPC: G03B21/20 ,  G03B33/12 ,  G03B33/06 ,  H04N9/31

    CPC classification number: G03B21/204 ,  G03B21/208 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3158 ,  H04N9/3161

    Abstract: In described examples, a first TIR or RTIR element is arranged to introduce at least red light to a first spatial light modulator for modulation thereof, and a second TIR or RTIR element is arranged to introduce at least green light to a second spatial light modulator for modulation thereof. At least one of the first and second TIR or RTIR elements is arranged to introduce blue light to at least one of the first and second spatial light modulators, respectively, for modulation thereof: time-sequentially apart from the first spatial light modulator's modulation of the introduced red light, to an extent the blue light is so introduced to the first spatial light modulator; and time-sequentially apart from the second spatial light modulator's modulation of the introduced green light, to an extent the blue light is so introduced to the second spatial light modulator.

    MULTI-SPATIAL LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES USING SOLID STATE LIGHT SOURCES
    8.
    发明申请
    MULTI-SPATIAL LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES USING SOLID STATE LIGHT SOURCES 有权
    多空间光调制器图像显示投影机结构使用固态光源

    公开(公告)号：US20140347634A1

    公开(公告)日：2014-11-27

    申请号：US14286326

    申请日：2014-05-23

    Applicant: Texas Instruments Incorporated

    Inventor： William M. Bommerbach ,  Gregory S. Pettitt ,  John M. Ferri ,  Sajjad Khan

    IPC: G03B21/14

    CPC classification number: G03B21/204 ,  G03B21/208 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3158 ,  H04N9/3161

    Abstract: A solid state illumination system is provided for image projection. Red, green and blue light is generated using a blue laser light source and phosphor emissions. The red, green and blue light is passed by TIR or TRIR elements of red, green and blue light channels of an X-cube prism structure for separate modulation by different spatial light modulators. The modulated red, green and blue light is passed by the TIR or TRIR elements into the X-cube and combined into a combined modulated RGB image forming light stream for image formation via projection optics onto a target imaging surface.

    Abstract translation: 提供固态照明系统用于图像投影。 使用蓝色激光光源和磷光体发射产生红色，绿色和蓝色光。 红色，绿色和蓝色光通过X立方棱镜结构的红色，绿色和蓝色光通道的TIR或TRIR元件，以通过不同的空间光调制器进行单独调制。 调制的红色，绿色和蓝色光被TIR或TRIR元件传递到X立方体，并组合成组合的调制RGB图像形成光流，用于通过投影光学器件到目标成像表面上的图像形成。

    LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES
    9.
    发明申请
    LIGHT MODULATOR IMAGE DISPLAY PROJECTOR ARCHITECTURES 审中-公开

    公开(公告)号：US20180196338A1

    公开(公告)日：2018-07-12

    申请号：US15913690

    申请日：2018-03-06

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： William M. Bommersbach ,  Gregory S. Pettitt ,  John M. Ferri ,  Sajjad Khan

    IPC: G03B21/20 ,  G03B33/12 ,  G03B33/06 ,  H04N9/31

    CPC classification number: G03B21/204 ,  G03B21/208 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3158 ,  H04N9/3161

    Abstract: In described examples, a first TIR or RTIR element is arranged to introduce at least red light to a first spatial light modulator for modulation thereof, and a second TIR or RTIR element is arranged to introduce at least green light to a second spatial light modulator for modulation thereof. At least one of the first and second TIR or RTIR elements is arranged to introduce blue light to at least one of the first and second spatial light modulators, respectively, for modulation thereof: time-sequentially apart from the first spatial light modulator's modulation of the introduced red light, to an extent the blue light is so introduced to the first spatial light modulator; and time-sequentially apart from the second spatial light modulator's modulation of the introduced green light, to an extent the blue light is so introduced to the second spatial light modulator.

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