Patent ID: 11860358
Assignee: META PLATFORMS TECHNOLOGIES, LLC
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. An angular light sensor comprising:
a first light detector including a first photodiode, a first high-grating, and a first low-grating, wherein the first low-grating is disposed between the first high-grating and the first photodiode; and
a second light detector including a second photodiode, a second high-grating, and a second low-grating, wherein the second low-grating is disposed between the second high-grating and the second photodiode, wherein the second low-grating is decentered with respect to the second high-grating, and wherein the first low-grating is centered with respect to the first high-grating;
a third light detector including a third photodiode, a third high-grating, and a third low-grating, wherein the third low-grating is disposed between the third high-grating and the third photodiode;
a fourth light detector configured as the first light detector;
a fifth light detector configured as the second light detector; and
a sixth light detector configured as the third light detector, wherein the fourth light detector, the fifth light detector, and the sixth light detector are rotated 90 degrees with respect to the first light detector, the second light detector, and the third light detector.