Title:
IMAGE PROJECTION UNIT AND FILTER BOX
Document Type and Number:
WIPO Patent Application WO/2018/079024
Kind Code:
A1
Abstract:
Provided is an image projection unit that can reduce the replacement frequency of a filter and extend the lifespan of an image projection device body. Provided is an image projection unit including an image projection device body (10), and a filter box (100A) that is attachable/detachable with regard to the body (10) and covers at least an intake port of the body, wherein a box-side filter that is provided to the filter box (100A) has a wider total area than the area of a body filter that is provided to the intake port of the body (10).
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Inventors:
HIRASAWA TAKEAKI (JP)
Application Number:
PCT/JP2017/029812
Publication Date:
May 03, 2018
Filing Date:
August 21, 2017
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G03B21/14; G03B21/00; H04N5/74; H05K7/20
Domestic Patent References:
| WO2012077211A1 | 2012-06-14 | |||
| WO2012105208A1 | 2012-08-09 |
Foreign References:
| JP2010078976A | 2010-04-08 | |||
| JP2009115967A | 2009-05-28 | |||
| JPH08194201A | 1996-07-30 | |||
| JP2015036789A | 2015-02-23 | |||
| JP2003162005A | 2003-06-06 | |||
| JP2015222305A | 2015-12-10 | |||
| JP2011150014A | 2011-08-04 | |||
| JP2017159266A | 2017-09-14 |
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
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