Invention Grant
- Patent Title: Head mounted display with color correcting doublet eyepiece
- Patent Title (中): 带彩色校正双头目镜的头戴式显示器
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Application No.: US14173625Application Date: 2014-02-05
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Publication No.: US09086569B1Publication Date: 2015-07-21
- Inventor: Ozan Cakmakci , Amber M. Luttmann , Anurag Gupta
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: G02B27/01
- IPC: G02B27/01

Abstract:
An eyepiece for a head mounted display (“HMD”) includes a doublet lens that includes a first optical element, a second optical element, and a reflecting element. The first optical element has an entry surface to receive the display light from a micro display and a first coupling surface disposed opposite the entry surface. The first optical element has a first index of refraction and a first Abbe number. The second optical element has an exit surface and a second coupling surface paired to the first coupling surface of the first optical element. The second optical element has approximately the first index of refraction and a second Abbe number different from the first Abbe number. The doublet lens and the reflecting element are configured to direct the display light through the entry surface, the first coupling surface, the second coupling surface, off the reflecting element, and through the exit surface.
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