Patent ID: 7593076

Claim:
An optical device comprising: a polarizer having a polarizing layer that consists of triacetylcellulose-free and uniaxially extended polyvinyl alcohol, the polarizing layer absorbing polarized light in a direction parallel to the uniaxially extending direction and transmitting polarized light in a direction perpendicular to the uniaxially extending direction; a first light-transmissive substrate bonded on one surface of the polarizing layer of the polarizer by a first bonding material; and a second light-transmissive substrate bonded on the other surface of the polarizing layer of the polarizer by a second bonding material; the first light-transmissive substrate and the second light-transmissive substrate being made of an inorganic material, and the optical device not including an organic material except the polarizing layer, the first bonding material and the second bonding material.