Patent ID: 9709715
Date: 2017-07-18
CPC Classifications: G01J,G02B,H01L

Claim:
1. An angle limiting filter comprising: a first light-shielding layer containing a first light-shielding material and provided with a plurality of first openings; 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, wherein the first light-shielding layer contacts two edges and a corner of an edge surface of the second light-shielding layer, the two edges intersecting each other to form the corner, the first light-shielding layer includes a first portion located between two of the first openings next to each other and a second portion located closer to the side of the second light-shielding layer than the first portion and the plurality of first openings, and the edge surface, which includes the two edges intersecting each other to form the corner, of the second light-shielding layer is located at the center of the width of the second portion of the first light-shielding layer.