Title:
ILLUMINATION OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/100512
Kind Code:
A1
Abstract:
An illumination optical system according to one embodiment of the present disclosure comprises: a first fly-eye lens that divides irradiated light from a light source unit into a plurality of optical fluxes, magnifies the irradiated light to irradiate the same, and is formed by a plurality of first lens cells being arranged in a vertical-horizontal matrix pattern; and a second fly-eye lens that is disposed at a latter stage from the first fly-eye lens and is formed by a plurality of second lens cells, which correspond one-to-one to the plurality of first lens cells constituting the first fly-eye lens and have a larger lens pitch than the plurality of first lens cells, being arranged in a vertical-horizontal matrix pattern.
Inventors:
SUDO TAKASHI (JP)
Application Number:
PCT/JP2022/038797
Publication Date:
June 08, 2023
Filing Date:
October 18, 2022
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
F21S2/00; G02B19/00; F21V5/04; G03B21/00; G03B21/14; H04N5/74
Foreign References:
| JP2013041760A | 2013-02-28 | |||
| JP2002244199A | 2002-08-28 | |||
| JP2014153636A | 2014-08-25 | |||
| JPH10115870A | 1998-05-06 | |||
| JP2007003744A | 2007-01-11 | |||
| JP2012230352A | 2012-11-22 | |||
| JPH05346557A | 1993-12-27 | |||
| US20180111405A1 | 2018-04-26 | |||
| JP2000206311A | 2000-07-28 |
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
Download PDF: