Invention Grant
- Patent Title: Curved eyepiece with color correction for head wearable display
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Application No.: US15093227Application Date: 2016-04-07
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Publication No.: US09897811B2Publication Date: 2018-02-20
- Inventor: Oscar A. Martinez , Ozan Cakmakci , James C. Dunphy
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google LLC
- Current Assignee: Google LLC
- Current Assignee Address: US CA Mountain View
- Main IPC: G02B27/01
- IPC: G02B27/01 ; F21V8/00 ; G02B27/28

Abstract:
An apparatus for use with a head wearable display includes a curved eyepiece for guiding display light to a viewing region offset from a peripheral location and emitting the display light along an eye-ward direction in the viewing region. The curved eyepiece includes a curved lightguide to guide the display light, an eye-ward facing surface that is concave, a world facing surface that is convex and opposite the eye-ward facing surface, and an optical combiner disposed at the viewing region to redirect the display light towards the eye-ward direction for output from the curved lightguide. The optical combiner is partially transmissive to ambient light incident through the world facing surface such that the viewing region is see-through. In some embodiments, a prism is disposed proximate to the input surface to pre-compensate the display light for lateral chromatic aberrations resulting the curved lightguide.
Public/Granted literature
- US20170293143A1 CURVED EYEPIECE WITH COLOR CORRECTION FOR HEAD WEARABLE DISPLAY Public/Granted day:2017-10-12
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