Light-shielding film and lens unit

Abstract

This invention provides a light-shielding film with excellent front and back-side discrimination and a lens unit having the light-shielding film. The light-shielding film of this invention comprises: a film substrate having light-shielding properties, a first anti-gloss layer, and a second anti-gloss layer. The first anti-gloss layer is disposed on the outermost surface of the front side of the light-shielding film, and the second anti-gloss layer is disposed on the outermost surface of the back side of the light-shielding film. The optical density of the first and second anti-gloss layers is less than the optical density of the film substrate. At least one of the first and second anti-gloss layers has a glossiness greater than 0% and less than 1.0% at an incident angle of 60 degrees. The absolute value of the difference in glossiness between the first and second anti-gloss layers is less than 1%. The absolute value of the difference in luminance index (L*) between the first and second anti-gloss layers is 2 or more. The optical density of the light-shielding film is 4 or more. none

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