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Patent Searching and Data


Title:
VIDEO PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/140752
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a video projection device capable of obtaining a satisfactory video (image) while achieving reductions in power consumption and the size of the device. Provided is a video projection device equipped with at least a monolithic semiconductor laser array that has a plurality of light emitting units each emitting laser light, an optical wave guide that guides the laser light in a predetermined direction, a mirror that performs scanning with the laser light in two axis directions, and a diffraction element that diffracts the laser light in a specific direction in front of an eye and projects the laser light on a retina, each of the plurality of light emitting units being optically coupled to incidence ports different from each other among a plurality of incidence ports of the optical waveguide.

Inventors:
OGAWA YUSUKE (JP)
Application Number:
PCT/JP2020/042967
Publication Date:
July 15, 2021
Filing Date:
November 18, 2020
Export Citation:
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Assignee:
SONY GROUP CORP (JP)
International Classes:
G02B27/02; G02B6/12; G02B6/42; H04N5/64
Domestic Patent References:
WO2018186046A12018-10-11
WO2017057243A12017-04-06
Foreign References:
JPH07506220A1995-07-06
JP2009212479A2009-09-17
JP2008010837A2008-01-17
JP2009177058A2009-08-06
JP2017125905A2017-07-20
JP2004145367A2004-05-20
US20170295229A12017-10-12
Attorney, Agent or Firm:
WATANABE Kaoru (JP)
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