Invention Grant
- Patent Title: Optical combiner for near-eye display
- Patent Title (中): 用于近眼显示的组合器
-
Application No.: US13732688Application Date: 2013-01-02
-
Publication No.: US08947783B2Publication Date: 2015-02-03
- Inventor: Anurag Gupta , Chia-Jean Wang
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Taylor & Zafman LLP
- Agent Blakely Sokoloff
- Main IPC: G02B27/14
- IPC: G02B27/14 ; G02B27/01

Abstract:
An optical combiner includes a first, second, and third color combiner layer (“CCL”). The first CCL includes a first diffractive grating coated with a first filter configured to reflect a first color light and pass a second and a third color light. The second CCL includes a second diffractive grating coated with a second filter configured to reflect the second color light and pass the third color light. The third CCL includes a third diffractive grating coated with a third filter configured to partially reflect visible light. The diffractive gratings are each embedded in an index matched material and are angle-tuned diffractive gratings configured to receive image light at an angle and respectively reflect the first, second, and third color light in the image light at an order of diffraction that directs the light to an eye of a user.
Public/Granted literature
- US20140185142A1 OPTICAL COMBINER FOR NEAR-EYE DISPLAY Public/Granted day:2014-07-03
Information query