Patent ID: 9163984
Filing Date: 2015-10-20
Classification: G01J,G02B,H01L

Abstract:
1. An angle limiting filter comprising: a first light-shielding layer containing a first light-shielding material and provided with a first opening; a second light-shielding layer containing a second light-shielding material and located in a region which surrounds at least one portion of the first light-shielding layer; a third light-shielding layer containing the first light-shielding material, the third light shielding layer being provided with a second opening at least one portion of which overlaps the first opening, the third shielding layer being located above the first light-shielding layer; and a fourth light-shielding layer containing the second light-shielding material and located above the second light-shielding layer in a region which surrounds at least one portion of the third light-shielding layer.