Title:
照明装置
Document Type and Number:
Japanese Patent JP6745068
Kind Code:
B2
Abstract:
An illumination device has a coherent light source that emits coherent light beam, and an optical device that diffuses the coherent light beam, wherein the optical device comprises a first diffusion region that diffuses the coherent light beam to illuminate a first area, and a second diffusion region that diffuses the coherent light beam to display predetermined information in a second area.
Inventors:
Kurashige Makio
Tomoe Sato
Kazutoshi Ishida
Tomoe Sato
Kazutoshi Ishida
Application Number:
JP2017112007A
Publication Date:
August 26, 2020
Filing Date:
June 06, 2017
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
B60Q1/04; B60Q1/00; B60Q1/12; B60Q1/14; F21S2/00; F21V5/04; F21V9/00; F21V9/40; F21V13/00; F21V14/00; G02B5/00; G02B5/02; G02B5/32; G09F13/32; G09F19/12
Domestic Patent References:
| JP2281226A | ||||
| JP10153653A | ||||
| JP2007024928A | ||||
| JP2013203251A | ||||
| JP2011084106A |
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Yasushi Kawasaki
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Yasushi Kawasaki