- 专利标题: VOLUME HOLOGRAPHIC OPTICAL ELEMENTS WITH EXPANDED ANGULAR ACCEPTANCE
-
申请号: US18443008申请日: 2024-02-15
-
公开(公告)号: US20240345540A1公开(公告)日: 2024-10-17
- 发明人: Arkady Bablumyan
- 申请人: A9.com, Inc.
- 申请人地址: US CA Palo Alto
- 专利权人: A9.com, Inc.
- 当前专利权人: A9.com, Inc.
- 当前专利权人地址: US CA Palo Alto
- 分案原申请号: US17122160 2020.12.15
- 主分类号: G03H1/02
- IPC分类号: G03H1/02 ; G02B5/32 ; G03H1/04
摘要:
The present invention features VHOEs with expanded acceptance angle ranges as well as various systems and methods for fabricating VHOEs with expanded acceptance angle ranges. The VHOE with expanded acceptance angle range may include two or more individual Bragg gratings. In preferred embodiments, the two or more individual Bragg gratings have the same diffraction geometry but with shifted Bragg conditions. Having the same diffraction geometry means when light is incident on the VHOE including two or more individual Bragg gratings, the diffracted light from each of the Bragg gratings is co-linear or overlapping with the diffracted light from the other Bragg gratings. The Bragg condition for each of the Bragg gratings are shifted with respect to each neighboring Bragg grating by an amount up to the acceptance angle range of each individual Bragg grating.
信息查询