Patent ID: 8888303
Filing Date: 2014-11-18
Classification: B05D,G02B,H01J

Abstract:
1. An optical sheet disposed on an observer side relative to an image light source comprising: a plurality of layers that control light emitted from the image light source to emit the light on the observer side, wherein at least one of the plurality of layers is an optical functional sheet layer, which comprises prisms being arranged in parallel along a surface of the optical sheet whereby light is transmitted and wedge portions being arranged in parallel between the prisms whereby a part of visible light is absorbed; at least one of the plurality of layers other than the optical functional sheet layer is a light-absorbing layer capable of absorbing light all over the light-absorbing layer, and is capable of absorbing the part of visible light; and the light-absorbing layer and the wedge portions of the optical functional sheet layer absorb a same wavelength of light.