Title:
METHOD FOR MANUFACTURING OPTICAL IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP2020181174
Kind Code:
A
Abstract:
To provide a method for manufacturing an optical image forming device that is easy to manufacture.SOLUTION: In a method for manufacturing an optical image forming device 10, a first and a second light control members 11 and 11a are arranged so that their vertical light reflection surfaces 13 are orthogonal to each other in a plan view. At least one of the first and the second light control members 11 and 11a is manufactured through: a first step in which a release coat 21 is formed on the front and the back of a plate-shaped transparent material 20; a second step in which the plate-shaped transparent material 20 coated with the release coat 21 is irradiated with laser light from one side to form a plurality of through holes 15 having a rectangular cross section in parallel; a third step in which inner surfaces 16 on one side or both sides of the through holes 15 are made into vertical surfaces 17 orthogonal to one surface of the plate-shaped transparent material 20 by flat finishing; a fourth step in which vertical light reflecting surfaces 13 are formed by depositing, plating, or radiating a metal on the vertical surfaces 17; and a fifth step in which the release coat 21 is removed.SELECTED DRAWING: Figure 4
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Inventors:
OTSUBO MAKOTO
Application Number:
JP2019086372A
Publication Date:
November 05, 2020
Filing Date:
April 26, 2019
Export Citation:
Assignee:
ASKANET KK
International Classes:
G02B30/00; G02B5/00; G02B5/08; G02B7/00; G02B7/182; G03B35/18
Attorney, Agent or Firm:
Fujio Nakamae
Yohei Kiyoi
Yoshihiro Kurita
Yohei Kiyoi
Yoshihiro Kurita