Title:
光照射装置、光照射装置の製造方法、回折光学素子多面付体、回折光学素子多面付体の製造方法、回折光学素子、回折光学素子の製造方法
Document Type and Number:
Japanese Patent JP7380925
Kind Code:
B2
Abstract:
To provide a light irradiation device easy to manufacture and capable of improving optical characteristics, and also to provide a manufacturing method of a light irradiation device, a diffraction optical element polygon assembly, a manufacturing method of a diffraction optical element polygon assembly, a diffraction optical element, and a manufacturing method of a diffraction optical element.SOLUTION: A light irradiation device 1 includes: a light source part 20; and a diffraction optical element 10 arranged at a location to be irradiated with light from the light source part 20 and including a unit cell 17 of a rectangular shape having a plurality of diffraction gratings to obtain specific light distribution characteristics. The diffraction optical element 10 includes a plurality of the unit cells 17 periodically arranged. The diffraction gratings are formed to an end part of the diffraction optical element 10.SELECTED DRAWING: Figure 4
Inventors:
Yusuke Shimizu
Fuminobu Mikami
Shinichiro Horikawa
Hidenori Yoshioka
Yuichi Miyazaki
Fuminobu Mikami
Shinichiro Horikawa
Hidenori Yoshioka
Yuichi Miyazaki
Application Number:
JP2023004281A
Publication Date:
November 15, 2023
Filing Date:
January 16, 2023
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
G02B5/18; F21V5/00
Domestic Patent References:
| JP2001507139A | ||||
| JP2010091986A | ||||
| JP2004093853A | ||||
| JP11251493A | ||||
| JP2004205924A | ||||
| JP2012058729A |
Attorney, Agent or Firm:
Masayuki Shobayashi
Tetsuo Shiba
Kazuyoshi Hayashi
Tetsuo Shiba
Kazuyoshi Hayashi