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1. (WO2018079024) IMAGE PROJECTION UNIT AND FILTER BOX

Pub. No.:    WO/2018/079024    International Application No.:    PCT/JP2017/029812
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Aug 22 01:59:59 CEST 2017
IPC: G03B 21/14
G03B 21/00
H04N 5/74
H05K 7/20
Applicants: SONY CORPORATION
ソニー株式会社
Inventors: HIRASAWA, Takeaki
平澤 武明
Title: IMAGE PROJECTION UNIT AND FILTER BOX
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).