Title:
光学装置用遮光部材
Document Type and Number:
Japanese Patent JP6593966
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light shielding member for an optical device which presents an excellent antireflection performance to light entering at a high angle with respect to a film normal line, exhibits an excellent sliding property, and is applicable to a smaller and thinner optical device.SOLUTION: The light shielding member for an optical device is adjusted so that Rz-Ra is 6 or larger and a coefficient of dynamic friction is 0.42 or smaller when the maximum height of the surface of the light shielding member having a light shielding layer on at least one of a base material film is denoted by Rz and the arithmetic average roughness is denoted by Ra. The surface hardness of the light shielding member is H or larger, and the difference in the optical concentration between before and after a repeated slide test which uses absorbent cotton impregnated with methyl ethyl ketone as a counter material is preferably 1.5 or smaller.SELECTED DRAWING: Figure 1
Inventors:
Yui Tokawa
Application Number:
JP2016129455A
Publication Date:
October 23, 2019
Filing Date:
June 29, 2016
Export Citation:
Assignee:
SOMAR Corporation
International Classes:
G02B5/00; B32B7/023; G03B9/00; G03B9/08; G03B11/00
Domestic Patent References:
| JP2006201268A | ||||
| JP2014122946A | ||||
| JP10268105A |
Foreign References:
| WO2012132727A1 |
Attorney, Agent or Firm:
Momoko Arima