Optical filter

摘要

An optical filter (1) includes: a film layer (3) formed of an optical film having a front surface (301) observed by an observer and a back surface opposing to the front surface (301), a releasable adhesive layer which is firmly placed on the back surface of the film layer and can be releasably adhered to the adhesion surface (40). The optical filter (1) further provides a flexible tab (10a, 10b) coupled integrally with the film layer (3).