Title:
面光源装置および液晶表示装置
Document Type and Number:
Japanese Patent JP6869667
Kind Code:
B2
Abstract:
Provided is a surface light source apparatus that improves homogeneity of surface illumination light, using both light rays passing through a light emitting surface of a light-distribution control element and the reflected light rays. A surface light source apparatus according to the present invention includes: a light source; a holding substrate having a main surface on which the light source is held; a light-distribution control element disposed on the main surface of the holding substrate to cover the light source, the light-distribution control element changing distribution of light emitted from the light source; and a diffuser that diffuses light emitted from the light-distribution control element. The light-distribution control element includes a diffusion part disposed at an installation surface that can abut the main surface of the holding substrate.
Inventors:
Takeshi Murai
Tomohiko Sawanaka
Tomohiko Sawanaka
Application Number:
JP2016168725A
Publication Date:
May 12, 2021
Filing Date:
August 31, 2016
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F21V5/00; F21S2/00; F21V5/04; F21V7/00; F21V7/04
Domestic Patent References:
| JP2013143219A | ||||
| JP2006286608A |
Foreign References:
| WO2012073398A1 | ||||
| US20150268513 |
Attorney, Agent or Firm:
Yoshitake Hidetoshi
Takahiro Arita
Takahiro Arita