Invention Grant
- Patent Title: Imaging lightguide with holographic boundaries
- Patent Title (中): 具有全息边界的成像光导
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Application No.: US14219316Application Date: 2014-03-19
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Publication No.: US09335549B2Publication Date: 2016-05-10
- Inventor: Ozan Cakmakci , Anurag Gupta , Mark B. Spitzer , Evan M. Richards
- 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: G03H1/00
- IPC: G03H1/00 ; G02B27/01 ; G03H1/02 ; G03H1/26 ; G02B5/02 ; G03H1/22

Abstract:
An optical element for a Head Mounted Display (“HMD”) includes a lightguide. The lightguide is embedded in the optical element and optically coupled to receive display light and direct the display light in an eyeward direction. The lightguide includes an eyeward hologram, a scene-side hologram, and a propagation region disposed between the eyeward hologram and the scene-side hologram. The eyeward hologram is configured to reflect a wavelength range of the display light that is incident upon the eyeward hologram at a specific angle. The scene-side hologram is configured to reflect the wavelength range of the display light that is incident upon the scene-side hologram at the specific angle.
Public/Granted literature
- US20150268467A1 IMAGING LIGHTGUIDE WITH HOLOGRAPHIC BOUNDARIES Public/Granted day:2015-09-24
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