公开(公告)号：US09664892B2

公开(公告)日：2017-05-30

申请号：US14155009

申请日：2014-01-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Philip Scott King ,  Gregory Scott Pettitt ,  Sajjad Ali Khan

IPC: G03B21/20 ,  G02B26/00 ,  H04N9/31

CPC classification number: G02B26/008 ,  G03B21/204 ,  H04N9/3114 ,  H04N9/3158 ,  H04N9/3161

Abstract: Apparatus and methods are disclosed for generating blue color illumination for use in a projection system. Light from a blue laser light source is reflected off a dichroic filter sequentially onto different color emitting phosphor coated light non-transmissive segments and onto a cyan color emitting phosphor coated light transmissive segment of a rotating color wheel. The different color light and cyan color light emitted by the phosphor back to the filter is selectively transmitted by the filter along a projection path. Blue laser light and cyan color light emitted by the phosphor transmitted through the color wheel is directed along a wraparound optical path back to the filter for reflection along the projection optical path.

公开(公告)号：US20140253882A1

公开(公告)日：2014-09-11

申请号：US14155009

申请日：2014-01-14

Applicant: Texas Instruments Incorporated

Inventor： Philip Scott King ,  Gregory Scott Pettitt ,  Sajjad Ali Khan

IPC: G02B26/00

CPC classification number: G02B26/008 ,  G03B21/204 ,  H04N9/3114 ,  H04N9/3158 ,  H04N9/3161

Abstract: Apparatus and methods are disclosed for generating blue color illumination for use in a projection system. Light from a blue laser light source is reflected off a dichroic filter sequentially onto different color emitting phosphor coated light non-transmissive segments and onto a cyan color emitting phosphor coated light transmissive segment of a rotating color wheel. The different color light and cyan color light emitted by the phosphor back to the filter is selectively transmitted by the filter along a projection path. Blue laser light and cyan color light emitted by the phosphor transmitted through the color wheel is directed along a wraparound optical path back to the filter for reflection along the projection optical path.

Abstract translation: 公开了用于产生投影系统中使用的蓝色照明的装置和方法。 来自蓝色激光源的光从二向色滤光器顺序地反射到不同颜色的发光荧光体涂覆的光非透射段上并转移到旋转色轮的青色发光磷光体涂覆的光透射段上。 由荧光体发射到滤光器的不同颜色的光和青色的颜色光沿着投影路径被滤光器选择性地透过。 通过色轮传播的荧光体发出的蓝色激光和青色色光沿着环绕光路被引导回到滤光器，以沿投影光路反射。

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。

公开(公告)号：US20150229102A1

公开(公告)日：2015-08-13

申请号：US14295138

申请日：2014-06-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sajjad Ali Khan ,  Eric Henry Pruett

IPC: H01S5/042

CPC classification number: H01S5/042 ,  H01S5/0021 ,  H01S5/0261 ,  H01S5/0617 ,  H01S5/06825

Abstract: An illumination module configured for insertion within a housing has a laser diode and a drive circuit for applying current or voltage to the laser diode at a first magnitude and in a first direction to cause the laser diode to emit laser light in a normal operating mode. An interlock connects the illumination module when inserted within the housing. The interlock has a mechanism configured to automatically modify the drive circuit when the module is removed from the housing, so that current or voltage is applied to the laser diode at a second magnitude and in a second direction opposite to the first direction that permanently damages the ability of the laser diode to emit the laser light that is emitted in the normal operating mode.

Abstract translation: 配置为插入壳体内的照明模块具有激光二极管和用于以第一幅度和第一方向向激光二极管施加电流或电压的驱动电路，以使激光二极管以正常操作模式发射激光。 当插入到外壳内时，互锁将照明模块连接起来。 互锁具有被配置为当模块从壳体移除时自动修改驱动电路的机构，使得电流或电压以与第一方向相反的第二大小和第二方向施加到激光二极管，从而永久损坏 激光二极管发射在正常工作模式下发射的激光的能力。

公开(公告)号：US09235045B2

公开(公告)日：2016-01-12

申请号：US14157269

申请日：2014-01-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sajjad Ali Khan

IPC: F21V9/14 ,  G02B26/00 ,  G02B5/30 ,  H04N9/31

CPC classification number: G02B26/008 ,  G02B5/3083 ,  H04N9/3114 ,  H04N9/3158

Abstract: Image projection illumination apparatus and methods are provided. A color wheel has a blue laser light reflecting region and other regions respectively coated with different color light emitting phosphors. Blue laser light of a given polarization is directed by reflection or transmission by a blue laser light polarization selective filter through a polarization changing element with changed polarization onto the color wheel. When the color wheel reflecting region is aligned with the incident light, incident light is reflected back through the polarization changing element with further changed polarization by the other of reflection or transmission by the filter for image projection. When the other regions are respectively aligned with the incident light, the different color light is emitted by the phosphors along the light path for image projection. In a described embodiment, the reflecting region has a portion coated with at least one of blue, green and cyan color producing phosphor and an uncoated reflecting portion; and aligning the reflecting region with the incident light directs both reflects incident light and phosphor emitted blue, green and/or cyan color light for image projection.

Abstract translation: 提供了图像投影照明装置和方法。 色轮具有蓝色激光反射区域和分别涂覆有不同颜色的发光荧光体的其它区域。 给定偏振的蓝色激光通过蓝色激光偏振选择滤光器的反射或透射通过具有改变的偏振的偏振变化元件引导到色轮来引导。 当色轮反射区域与入射光对准时，入射光通过偏振改变元件反射回来，另外通过用于图像投影的滤光器的反射或透射进一步改变偏振。 当其他区域分别与入射光对准时，不同的颜色光沿着用于图像投影的光路由荧光体发射。 在所描述的实施例中，反射区域具有涂覆有蓝色，绿色和青色产生荧光体和未涂覆反射部分中的至少一种的部分; 并且使反射区域与入射光对准，两者都反射入射光和发射的蓝色，绿色和/或青色荧光的荧光体用于图像投影。

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。

公开(公告)号：US20140226301A1

公开(公告)日：2014-08-14

申请号：US14157269

申请日：2014-01-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sajjad Ali Khan

IPC: G02B26/00

CPC classification number: G02B26/008 ,  G02B5/3083 ,  H04N9/3114 ,  H04N9/3158

Abstract: Image projection illumination apparatus and methods are provided. A color wheel has a blue laser light reflecting region and other regions respectively coated with different color light emitting phosphors. Blue laser light of a given polarization is directed by reflection or transmission by a blue laser light polarization selective filter through a polarization changing element with changed polarization onto the color wheel. When the color wheel reflecting region is aligned with the incident light, incident light is reflected back through the polarization changing element with further changed polarization by the other of reflection or transmission by the filter for image projection. When the other regions are respectively aligned with the incident light, the different color light is emitted by the phosphors along the light path for image projection. In a described embodiment, the reflecting region has a portion coated with at least one of blue, green and cyan color producing phosphor and an uncoated reflecting portion; and aligning the reflecting region with the incident light directs both reflects incident light and phosphor emitted blue, green and/or cyan color light for image projection.

Abstract translation: 提供了图像投影照明装置和方法。 色轮具有蓝色激光反射区域和分别涂覆有不同颜色的发光荧光体的其它区域。 给定偏振的蓝色激光通过蓝色激光偏振选择滤光器的反射或透射通过具有改变的偏振的偏振变化元件引导到色轮来引导。 当色轮反射区域与入射光对准时，入射光通过偏振改变元件反射回来，另外通过用于图像投影的滤光器的反射或透射进一步改变偏振。 当其他区域分别与入射光对准时，不同的颜色光沿着用于图像投影的光路由荧光体发射。 在所描述的实施例中，反射区域具有涂覆有蓝色，绿色和青色产生荧光体和未涂覆反射部分中的至少一种的部分; 并且使反射区域与入射光对准，两者都反射入射光和发射的蓝色，绿色和/或青色荧光的荧光体用于图像投影。