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Title:
OPTICAL ELEMENT, OPTICAL SYSTEM, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/208455
Kind Code:
A1
Abstract:
This optical element (10) has a flange part (13) outside an optical function part. The optical function part and a portion of the flange part (13) are covered with a reflection prevention film (12). A direction indication part (16) is formed as a projecting part of the reflection prevention film (12). The level difference between the direction indication part (16) and a flat surface of the flange part (13) is 2 μm or less.

Inventors:
MIYASAKA Koji (5-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
SATO Hiromasa (5-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
Application Number:
JP2019/016908
Publication Date:
October 31, 2019
Filing Date:
April 19, 2019
Export Citation:
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Assignee:
AGC INC. (5-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 05, 〒1008405, JP)
International Classes:
G02B7/02; G02B1/11; G02B3/00
Foreign References:
JP2008203580A2008-09-04
JP2003114368A2003-04-18
JP2015025943A2015-02-05
JP2009182362A2009-08-13
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (Toranomon East Bldg. 10F, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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