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1. (WO2018066401) LAMINATED LIGHT-SHIELDING FILM AND LIGHT-SHIELDING RING FOR OPTICAL APPARATUS USING SAME, LENS UNIT, AND CAMERA MODULE

Pub. No.:    WO/2018/066401    International Application No.:    PCT/JP2017/034535
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Tue Sep 26 01:59:59 CEST 2017
IPC: G02B 5/00
G02B 7/02
G03B 9/02
G03B 11/00
Applicants: KIMOTO CO., LTD.
株式会社きもと
Inventors: NAGAHAMA, Tsuyoshi
長濱 豪士
TOSHIMA, Yasumaro
豊島 靖磨
UEGAKI, Satoshi
上垣 聡
YAMAMOTO, Hiroki
山本 拡輝
Title: LAMINATED LIGHT-SHIELDING FILM AND LIGHT-SHIELDING RING FOR OPTICAL APPARATUS USING SAME, LENS UNIT, AND CAMERA MODULE
Abstract:
Provided are a laminated light-shielding film and the like which have easily distinguishable front and rear surfaces while also having a black light-shielding layer. This laminated light-shielding film 100 has a laminated structure provided with at least: a substrate film 11; a black light-shielding layer 21 provided on the side of a primary surface 11a on one side of the substrate film 11; and a black light-shielding layer 31 provided on the side of a primary surface 11b on the other side. The black light-shielding layer 21 and a second black light-shielding layer 23 each have an optical density of 2.5 or more and a 60-degree glossiness of 5.0% or less, and the black light-shielding layer 21 has a 60-degree glossiness and/or a brightness index L* different from those of the black light-shielding layer 31. Desirably, the substrate film 11, the first black light-shielding layer 21 and/or the second black light-shielding layer 31 have inclined end surfaces 12, 22, 32 which expand the film width from the first black light-shielding layer 21 toward the second black light-shielding layer 31.