Patent ID: 9559238
Date: 2017-01-31
CPC Classifications: G01J,G01S,H01L

Claim:
1. An optical receiver, comprising: a first photosensor disposed within a substrate and having a first angled surface located on a first side of a depression within the substrate, wherein the first angled surface is angled at a first obtuse angle with respect to a part of a top surface of the substrate over the first photosensor; a second photosensor disposed within the substrate and having a second angled surface located on a second side of the depression, opposite the first side of the depression, wherein the second angled surface is angled at a second obtuse angle with respect to a part of the top surface of the substrate over the second photosensor; and a plurality of blocking structures disposed over the top surface of the substrate and configured to block radiation that is not incident on either the first angled surface or the second angled surface.