The present disclosure relates to an optical receiver. The optical receiver has a first photosensor and a second photosensor disposed within a substrate. The first photosensor has a first angled surface located on a first side of a depression within the substrate, and the second photosensor has a second angled surface located on a second side of the depression, opposite the first side of the depression. A plurality of blocking structures are disposed over the substrate. The plurality of blocking structures block radiation that is not incident on the first and second angled surfaces. By receiving incident radiation on the first and second angled surfaces, the first and second photosensors are able to generate directional-dependent photocurrents that vary depending upon an angle of incident radiation. Based upon the directional-dependent photocurrents, an angle of incident radiation can be determined.