Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LAMINATED LIGHT-SHIELD FILM FOR OPTICAL DEVICES, LIGHT-SHIELD RING FOR OPTICAL DEVICES USING THE SAME, LENS UNIT, AND CAMERA MODULE
Document Type and Number:
Japanese Patent JP2018060098
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated light-shield film which includes black light-shield layers and yet has easily distinguishable front and back surfaces.SOLUTION: A laminated light-shield film 100 has a laminated structure comprising at least a base material film 11, a black light-shield layer 21 provided on one principal surface 11a of the base material film 11, and a black light-shield layer 31 provided on the other principal surface 11b. The black light-shield layer 21 and the second black light-shield layer 31 each have an optical density no less than 2.5 and a 60-degree gloss no greater than 5.0%. The black light-shield layer 21 has a 60-degree gloss and/or lightness index Lthat are different from those of the black light-shield layer 31. The base material film 11, the first light-shield layer 21, and/or the second light-shield layer 31 may preferably have slanted end faces 12, 22, 32 that increase the film width from the first black light-shield layer 21 toward the second black light-shield layer 31.SELECTED DRAWING: Figure 2

Inventors:
NAGAHAMA TSUYOSHI
TOYOSHIMA YASUMARO
UEGAKI SATOSHI
YAMAMOTO HIROKI
Application Number:
JP2016198372A
Publication Date:
April 12, 2018
Filing Date:
October 06, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KIMOTO KK
International Classes:
G02B5/00; G03B11/00
Domestic Patent References:
JP2012133071A2012-07-12
JP2005007864A2005-01-13
JPH042780A1992-01-07
JPH1184338A1999-03-26
JP2006085026A2006-03-30
JP2009003315A2009-01-08
Foreign References:
US20140016202A12014-01-16
Attorney, Agent or Firm:
Yoshiyuki Inaba
Kazuhiko Naito
Satojiro Okano
Yu Sanada



 
Previous Patent: An image forming device, a control device, and a program

Next Patent: Image forming device