公开(公告)号：US20150248014A1

公开(公告)日：2015-09-03

申请号：US14588792

申请日：2015-01-02

Applicant: Microsoft Technology Licensing, LLC

Inventor： Karlton Powell ,  Tim Large ,  Yutaka Tokuda

IPC: G02B27/22 ,  G02B5/30 ,  G02F1/1335 ,  G02B27/26 ,  G02F1/1334 ,  G02B3/00 ,  G02B27/28 ,  G02B5/124

CPC classification number: G02B27/2292 ,  G02B3/0006 ,  G02B5/124 ,  G02B5/3083 ,  G02B27/18 ,  G02B27/26 ,  G02B27/283 ,  G02B27/288 ,  G02F1/1334 ,  G02F1/133528 ,  G02F2001/13345 ,  G02F2001/133541 ,  G02F2001/13355 ,  Y10T29/52

Abstract: Polarization state in retro-reflective arrays may be controlled throughout the optical path of a retro-reflective retro-imaging setup to enhance system efficiency. A polarization beam splitter layer and a retarder layer placed in front of the retro-reflector array may be oriented such that polarized light is used as source, source input light is efficiently reflected at the polarization beam splitter layer toward the retro-reflective layer, and polarization is converted to circular upon first pass through retarder layer. The polarization may also be oriented at or near 45° with respect to input polarization state, light may be retro-reflected and reconverged at the retro-reflective layer, and converted to linear polarization state. The light may then be rotated about 90° with respect to input linear state, and/or passed through the polarization beam splitter layer upon second pass to form the reconvergent image.

Abstract translation: 逆反射阵列中的极化状态可以在逆反射反射成像装置的整个光路中被控制，以提高系统效率。 放置在后向反射器阵列前方的偏振分束器层和延迟器层可以被定向为使得偏振光用作源，源极输入光被有效地反射到偏振分束器层朝向后向反射层，以及 首次通过延迟器层时，极化被转换为圆形。 偏振还可以相对于输入偏振状态定向在或接近45°，光可以在后向反射层处被反射并再变换，并转换成线偏振状态。 然后光可以相对于输入线性状态旋转约90°，和/或在第二次通过时通过偏振分束器层以形成再生图像。

公开(公告)号：US09798154B2

公开(公告)日：2017-10-24

申请号：US14588792

申请日：2015-01-02

Applicant: Microsoft Technology Licensing, LLC

Inventor： Karlton Powell ,  Tim Large ,  Yutaka Tokuda

IPC: G02B27/22 ,  G02B3/00 ,  G02B5/124 ,  G02F1/1334 ,  G02B5/30 ,  G02B27/26 ,  G02B27/28 ,  G02F1/1335 ,  G02B27/18

CPC classification number: G02B27/2292 ,  G02B3/0006 ,  G02B5/124 ,  G02B5/3083 ,  G02B27/18 ,  G02B27/26 ,  G02B27/283 ,  G02B27/288 ,  G02F1/1334 ,  G02F1/133528 ,  G02F2001/13345 ,  G02F2001/133541 ,  G02F2001/13355 ,  Y10T29/52

Abstract: Polarization state in retro-reflective arrays may be controlled throughout the optical path of a retro-reflective retro-imaging setup to enhance system efficiency. A polarization beam splitter layer and a retarder layer placed in front of the retro-reflector array may be oriented such that polarized light is used as source, source input light is efficiently reflected at the polarization beam splitter layer toward the retro-reflective layer, and polarization is converted to circular upon first pass through retarder layer. The polarization may also be oriented at or near 45° with respect to input polarization state, light may be retro-reflected and reconverged at the retro-reflective layer, and converted to linear polarization state. The light may then be rotated about 90° with respect to input linear state, and/or passed through the polarization beam splitter layer upon second pass to form the reconvergent image.

公开(公告)号：US10571624B2

公开(公告)日：2020-02-25

申请号：US14839644

申请日：2015-08-28

Applicant: Microsoft Technology Licensing, LLC

Inventor： Kurt A. Jenkins ,  Tim Large ,  Lincoln Ghioni ,  Neil Emerton

IPC: G06F3/02 ,  F21V8/00

Abstract: The description relates to laminated input devices, such as keyboards. One example can include a laminated light-distribution assembly and a key assembly adhered in light receiving relation to the laminated light-distribution assembly as a laminated input device having a neutral axis in the light-distribution assembly.