Title:
照明装置
Document Type and Number:
Japanese Patent JP6986216
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device which enables lighting and light display in various forms.SOLUTION: A lighting device includes a light source part, a light guide optical system, and a first diffractive optical element 13. The light guide optical system guides light L from the light source part to the first diffractive optical element 13. The first diffractive optical element 13 emits the incident light L in a first pattern P1 (for example, a checker flag pattern). The light L emitted from the first diffractive optical element 13 is projected in a second pattern (for example, a toric pattern) to a lighting area R.SELECTED DRAWING: Figure 2
Inventors:
Nakatsugawa Natsuori
Shogo Kubota
Kazutoshi Ishida
Shunpei Nishio
Kurashige Makio
Shogo Kubota
Kazutoshi Ishida
Shunpei Nishio
Kurashige Makio
Application Number:
JP2017077572A
Publication Date:
December 22, 2021
Filing Date:
April 10, 2017
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
F21S2/00; B60Q1/04; B60Q1/26; F21S8/08; F21S9/02; F21S43/40; F21V9/00; F21V9/40; F21V14/04; G02B5/18; G02B5/20; G02B27/00
Domestic Patent References:
| JP2003267127A | ||||
| JP5319168A | ||||
| JP7112640A |
Foreign References:
| EP0738903A1 | ||||
| WO2016072505A1 | ||||
| CN104344299A |
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Murakoshi Taku
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Murakoshi Taku