US 12,468,149 B2
Optical element including light shielding regions and pinholes
Masakazu Gunji, Tokyo (JP)
Assigned to Magnolia White Corporation, Tokyo (JP)
Filed by Magnolia White Corporation, Tokyo (JP)
Filed on Apr. 22, 2022, as Appl. No. 17/726,587.
Claims priority of application No. 2021-085272 (JP), filed on May 20, 2021.
Prior Publication US 2022/0373792 A1, Nov. 24, 2022
Int. Cl. G02B 27/00 (2006.01); G06F 3/01 (2006.01); H04N 23/21 (2023.01); G02F 1/00 (2006.01)
CPC G02B 27/0093 (2013.01) [G06F 3/013 (2013.01); H04N 23/21 (2023.01); G02B 27/00 (2013.01); G02F 1/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An optical device comprising:
a first substrate;
a second substrate provided to overlap the first substrate;
a plurality of light emitting regions for emitting near-infrared light on the first substrate;
a plurality of sensor regions for detecting the near-infrared light on the first substrate;
a light shielding region, and a plurality of pinholes provided in the light shielding region on the second substrate;
a plurality of first individual regions each including one of the plurality of sensor regions, the light shielding region, and one of the plurality of pinholes; and
a plurality of second individual regions each including one of the plurality of light emitting regions, wherein
the plurality of first individual regions and the plurality of second individual regions are disposed alternately,
an individual region (A) is in a central region of the plurality of first individual regions,
an individual region (B) and an individual region (C) are in a peripheral region of the plurality of first individual regions,
the individual region (C) is further from the central region than the individual region (B),
a pinhole overlaps with a center portion of the sensor region in the individual region (A),
the pinhole does not overlaps with the center position of the sensor region in the individual region (B),
the pinhole does not overlaps with the center position of the sensor region in the individual region (C), and
a distance between the pinhole and the center position of the sensor region in the individual region (C) is longer than that in the individual region (B) in a planar view.