Title:
光照射装置
Document Type and Number:
Japanese Patent JP6506974
Kind Code:
B2
Abstract:
A light irradiation device includes a Gaussian beam output unit for outputting light having a light intensity distribution that conforms to a Gaussian distribution, a spatial light modulator for receiving the light and modulating the light by presenting a CGH, an optical system for converging the modulated light, and an amplitude mask arranged on at least one of an optical axis between the Gaussian beam output unit and the spatial light modulator and an optical axis between the spatial light modulator and the optical system. The amplitude mask has a circular-shaped first region centered on the optical axis and an annular-shaped second region that surrounds the first region. Transmittance in the second region continuously decreases as a distance from the optical axis increases.
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Inventors:
Hiroto Sakai
Yu Takiguchi
Yu Takiguchi
Application Number:
JP2015010325A
Publication Date:
April 24, 2019
Filing Date:
January 22, 2015
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
F21V9/00; F21S2/00; F21V5/00; F21V9/08; G03B21/14; G03H1/22
Domestic Patent References:
| JP2011215459A | ||||
| JP55041480A | ||||
| JP2011152578A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Kenichi Shibayama
Shotaro Terasawa
Yoshiki Kuroki
Kenichi Shibayama
Shotaro Terasawa