Title:
携帯型照明装置および照明方法
Document Type and Number:
Japanese Patent JP6807058
Kind Code:
B2
Abstract:
A portable lighting device includes: a coherent light source; a shaping optical system that shapes coherent light emitted from the coherent light source; and a diffractive optical element that diffracts the coherent light shaped by the shaping optical system to a surface to be irradiated (IP). The diffractive optical element is rotatably supported. The surface to be irradiated is lighted in a pattern depending on a diffraction pattern of the diffractive optical element.
Inventors:
Shunpei Nishio
Nakatsugawa Naori
Kurashige Makio
Kazutoshi Ishida
Nakatsugawa Naori
Kurashige Makio
Kazutoshi Ishida
Application Number:
JP2020543231A
Publication Date:
January 06, 2021
Filing Date:
November 29, 2019
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
F21L4/00; F21V9/00; F21V14/00; F21V23/00; F21V23/04; G02B5/18
Domestic Patent References:
| JP5023182U | ||||
| JP7318856A | ||||
| JP201690318A | ||||
| JP20122871A | ||||
| JP2004253226A |
Foreign References:
| WO2018124075A1 |
Attorney, Agent or Firm:
Yukitaka Nakamura
Satoru Asakura
Yukihiro Hotta
Satoru Asakura
Yukihiro Hotta