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Title:
PROJECTION SCREEN CONTROL METHOD AND PROJECTION-TYPE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/188086
Kind Code:
A1
Abstract:
In the projection screen control method according to one embodiment of the present invention, a display member of which transmissivity or reflectivity for visible light varies with light and which contains a photochromic material is irradiated sequentially with first control light and second control light that have different light intensities.

Inventors:
TAKANASHI HIDEHIKO (JP)
ONO HIDEKI (JP)
ISHII YUI (JP)
Application Number:
PCT/JP2019/009080
Publication Date:
October 03, 2019
Filing Date:
March 07, 2019
Export Citation:
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Assignee:
SONY CORP (JP)
International Classes:
G03B21/62; G02B5/00; G02F1/13; G02F1/1335; G03B21/00; G03B21/14
Domestic Patent References:
WO2007108387A12007-09-27
Foreign References:
JP2008506972A2008-03-06
JP2007271645A2007-10-18
JP2012220668A2012-11-12
JP2013122490A2013-06-20
JPH05197021A1993-08-06
JP2010079185A2010-04-08
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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