- 专利标题: Backlight, multiview display and method employing tapered collimator
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申请号: US16576685申请日: 2019-09-19
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公开(公告)号: US11048037B2公开(公告)日: 2021-06-29
- 发明人: David A. Fattal , Ming Ma , Xuejian Li
- 申请人: LEIA INC.
- 申请人地址: US CA Menlo Park
- 专利权人: LEIA INC.
- 当前专利权人: LEIA INC.
- 当前专利权人地址: US CA Menlo Park
- 代理商 J. Michael Johnson
- 主分类号: F21V7/04
- IPC分类号: F21V7/04 ; F21V8/00
摘要:
A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a tapered collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The tapered collimator is configured to collimate light provided by a light source as collimated light and to communicate the collimated light to the light guide to be guided as the guided light. The collimated light has a collimation factor configured to provide a predetermined angular spread of the guided light, the collimation factor being a function of a taper of the tapered collimator. The multiview display includes multiview pixels that include view pixels as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a view pixel.
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