Title:
OPTICAL SYSTEM, DISPLAY DEVICE, PROJECTION DEVICE, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/034926
Kind Code:
A1
Abstract:
This optical system is provided with a coherent light source, and a fixed diffusion plate and a relative movement diffusion plate intersecting with the direction of travel of light emitted from the coherent light source. The fixed diffusion plate emits incident light in a rectangular shape. The relative movement diffusion plate is such that a light diffusion surface moves relative to incident light.
Inventors:
SHIBUYA KAZUYUKI (JP)
KANASUGI SHUNSUKE (JP)
ARIMA MITSUO (JP)
HANASHIMA NAOKI (JP)
KANASUGI SHUNSUKE (JP)
ARIMA MITSUO (JP)
HANASHIMA NAOKI (JP)
Application Number:
PCT/JP2021/029838
Publication Date:
February 17, 2022
Filing Date:
August 13, 2021
Export Citation:
Assignee:
DEXERIALS CORP (JP)
International Classes:
F21S2/00; F21V5/00; G02B3/00; G02B5/02; G03B21/00; G03B21/14; F21Y115/30
Domestic Patent References:
| WO2006137459A1 | 2006-12-28 |
Foreign References:
| JP2008134269A | 2008-06-12 | |||
| JP2010060912A | 2010-03-18 | |||
| JP2012234161A | 2012-11-29 | |||
| JP2020136940A | 2020-08-31 | |||
| JP4235769B1 | 2009-03-11 | |||
| JP6160117B2 | 2017-07-12 |
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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