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公开(公告)号：US20150355403A1
公开(公告)日：2015-12-10
申请号：US14763577
申请日：2013-01-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Charles M Santori , David A Fattal , Kelley Elise Rivoire
CPC classification number: G02B6/0068 , G02B5/1819 , G02B6/0036 , G02B6/0058
Abstract: A directional grating-based backlight includes a light guide to guide light and three sets of diffraction gratings. The diffraction grating sets are to selectively couple out portions of light to be guided by the light guide. The light is to propagate within the light guide in three different propagation directions separated in angle by about 120 degrees. The sets of diffraction gratings are to couple out different portions of the guided light as substantially collimated light using diffraction coupling. The substantially collimated light is to be emitted from the directional grating-based backlight in substantially the same direction.
Abstract translation: 基于定向光栅的背光包括引导光的导光体和三组衍射光栅。 衍射光栅组件选择性地耦合由光导引导的光的部分。 光将在光导中以三个不同的传播方向传播，角度分开大约120度。 衍射光栅的组合是使用衍射耦合将引导光的不同部分作为基本上准直的光耦合。 基本上准直的光将基本上相同的方向从基于定向光栅的背光发射。
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公开(公告)号：US08681423B1
公开(公告)日：2014-03-25
申请号：US13753464
申请日：2013-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Gary Gibson , David A Fattal
CPC classification number: G02B6/0035
Abstract: A light modulator includes a light guide to guide light, a diffraction grating at a surface of the light guide, and a fluid having a refractive index substantially matched to a refractive index of the diffraction grating. The diffraction grating is to couple out a portion of guided light from the light guide using diffractive coupling. The index-matched fluid is to be selectively moved both into contact with the diffractive grating to defeat the diffractive coupling and out of contact with the diffraction grating to facilitate the diffractive coupling to modulate the coupled out guided light.
Abstract translation: 光调制器包括引导光的导光体，光导表面的衍射光栅以及具有与衍射光栅的折射率基本一致的折射率的流体。 衍射光栅是使用衍射耦合来耦合来自光导的一部分引导光。 折射率匹配流体将被选择性地移动成与衍射光栅接触以击败衍射耦合并且不与衍射光栅接触，以便于衍射耦合以调制耦合的导出光。
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公开(公告)号：US08915635B2
公开(公告)日：2014-12-23
申请号：US13801996
申请日：2013-03-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Marco Fiorentino , David A Fattal
CPC classification number: G02B6/0031 , G02B6/002
Abstract: A backlight to emit light from a surface thereof includes a light guide to guide light, first and second collimating reflectors and a light source to produce light. The first collimating reflector is at a first edge of the light guide to collimate the light from the light source in a vertical direction and to direct the collimated light into the light guide. The second collimating reflector is at a second edge of the light guide to further collimate the collimated light in a horizontal direction and to redirect the further collimated light back into the light guide.
Abstract translation: 从其表面发射光的背光源包括引导光的导光体，第一和第二准直反射器以及产生光的光源。 第一准直反射器位于光导的第一边缘处，以在垂直方向准直来自光源的光并将准直光引导到光导中。 第二准直反射器位于光导的第二边缘处，以进一步在水平方向准直准直光，并将另外的准直光重定向到光导中。
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公开(公告)号：US20140268867A1
公开(公告)日：2014-09-18
申请号：US13801996
申请日：2013-03-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Marco Fiorentino , David A Fattal
IPC: F21V8/00
CPC classification number: G02B6/0031 , G02B6/002
Abstract: A backlight to emit light from a surface thereof includes a light guide to guide light, first and second collimating reflectors and a light source to produce light. The first collimating reflector is at a first edge of the light guide to collimate the light from the light source in a vertical direction and to direct the collimated light into the light guide. The second collimating reflector is at a second edge of the light guide to further collimate the collimated light in a horizontal direction and to redirect the further collimated light back into the light guide.
Abstract translation: 从其表面发射光的背光源包括引导光的导光体，第一和第二准直反射器以及产生光的光源。 第一准直反射器位于光导的第一边缘处，以在垂直方向准直来自光源的光并将准直光引导到光导中。 第二准直反射器位于光导的第二边缘处，以进一步在水平方向准直准直光，并将另外的准直光重定向到光导中。
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