Title:
PROJECTION TYPE IMAGE DISPLAY DEVICE AND PROJECTION OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2015/097970
Kind Code:
A1
Abstract:
A system including a light source configured to illuminate light onto an image modulation element; a projection optical system including at least a first lens system and a second lens system configured to project the image modulated by the modulation element; and circuitry configured to shift a position of the first lens system in a direction perpendicular to an optical axis of the projection optical system based on an optical zoom factor, wherein a position of the image modulation element is unchanged when the circuitry shifts the position of the first lens system.
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Inventors:
NISHIKAWA JUN (JP)
Application Number:
PCT/JP2014/005708
Publication Date:
July 02, 2015
Filing Date:
November 13, 2014
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G02B13/16; G02B17/08
Foreign References:
| JP2010020036A | 2010-01-28 | |||
| US20120147341A1 | 2012-06-14 | |||
| US5701205A | 1997-12-23 | |||
| US20080198338A1 | 2008-08-21 |
Other References:
See also references of EP 3039471A1
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (Daiichi Tomizawa Building 3-1-3, Yotsuya, Shinjuku-k, Tokyo 04, JP)
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