Title:
ILLUMINATION DEVICE AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/060190
Kind Code:
A1
Abstract:
This illumination device is provided with: a plurality of light source assemblies; and a plate-shaped optical part on which light source light beams from the plurality of light source assemblies are incident from different directions from each other and which is divided into a reflection surface and a transmission surface according to the incident light intensity distributions of the respective light source light beams. Transmitted light beams that have passed the plate-shaped optical part among the light source light beams and reflected light beams that have been reflected by the plate-shaped optical part among the light source light beams are emitted in the same direction, and a boundary between the transmission surface and the reflection surface in the plate-shaped optical part is formed at a position at which the incident light intensities of the light source light beams from the plurality of light source assemblies have approximately equal values.
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Inventors:
OHKAWA SHINGO (JP)
YONEZAWA GEN (JP)
YONEZAWA GEN (JP)
Application Number:
PCT/JP2020/035485
Publication Date:
April 01, 2021
Filing Date:
September 18, 2020
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
F21S2/00; F21V5/00; F21V5/04; F21V7/00; F21V7/28; F21V9/20; G03B21/00; G03B21/14; F21Y105/10; F21Y115/10; F21Y115/30
Foreign References:
| JP2017208347A | 2017-11-24 | |||
| JP2020052341A | 2020-04-02 | |||
| JP2020052236A | 2020-04-02 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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