US 11,917,322 B2
Optical module having symmetrical opaque layer
Jung-Tai Lin, Hsin-Chu County (TW); and En-Feng Hsu, Hsin-Chu County (TW)
Assigned to PIXART IMAGING INC., Hsin-Chu County (TW)
Filed by PixArt Imaging Inc., Hsin-Chu County (TW)
Filed on Jul. 8, 2022, as Appl. No. 17/860,352.
Application 17/860,352 is a continuation of application No. 17/197,355, filed on Mar. 10, 2021, granted, now 11,418,729.
Application 17/197,355 is a continuation of application No. 16/801,359, filed on Feb. 26, 2020, granted, now 10,979,656.
Application 16/801,359 is a continuation of application No. 16/412,723, filed on May 15, 2019, granted, now 10,616,506.
Application 16/412,723 is a continuation of application No. 16/101,942, filed on Aug. 13, 2018, granted, now 10,341,584.
Application 16/101,942 is a continuation of application No. 15/189,189, filed on Jun. 22, 2016, granted, now 10,097,773.
Claims priority of application No. 104129150 (TW), filed on Sep. 2, 2015.
Prior Publication US 2022/0345644 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 5/33 (2023.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01); H04N 23/667 (2023.01)
CPC H04N 5/33 (2013.01) [H04N 23/667 (2023.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An optical module, comprising:
a light source;
multiple microlenses;
an optical sensor, configured to operate corresponding to the light source, and comprising:
a pixel matrix comprising a plurality of unblocked pixels, a plurality of first pixels and a plurality of second pixels, wherein each of the first pixels and the second pixels is aligned with and under one microlens among the multiple microlenses; and
an opaque layer covering upon a first region, which is a part of each first pixel, and upon a second region, which is a part of each second pixel, but not covering upon the unblocked pixels, wherein
the first region and the second region are symmetrically arranged in a first direction, and
uncovered regions of the first pixels and the second pixels are arranged to have a larger width in a second direction perpendicular to the first direction closer to a pixel edge in the first direction, and taper from both ends of the pixel edge toward a pixel center to improve accuracy of phase detection.