Patent ID: 8014071
Filing Date: 2011-09-06
Classification: G02B

Abstract:
1. A lens unit comprising a light selective transmission filter selectively reducing a transmittance of light and a one or more lenses; wherein the light selective transmission filter is a UV and infrared cut filter and comprises: a base material; wherein the base material is at least one member selected from the group consisting of a polyimide resin, a fluorinated aromatic polymer, a fluorinated polyimide resin, PFA and an epoxy resin and wherein the base material of the light selective transmission filter has a transmittance of 85% or more at each wavelength of 400-600 nm, maintains its shape at 260° C. for 3 minutes and has a glass transition temperature (Tg) of 150° C. or more, and a functional material layer comprising a light selective transmission layer formed on the base material, wherein the base material and the light selective transmission layer have a total thickness of less than 200 μm; the light selective transmission filter has a transmittance of 85% or more at each wavelength of 400 to 600 nm, a transmittance of less than 5% at 350 nm or less in the UV region and a transmittance of 5% or less at 800 nm to 1 μm; and wherein at least one lens has a thickness of less than 800 μm.