US 12,283,602 B2
Image sensor with improved color accuracy
Jonathan Borremans, Lier (BE)
Assigned to Spectricity, Mechelen (BE)
Filed by Spectricity, Mechelen (BE)
Filed on Sep. 13, 2021, as Appl. No. 17/447,495.
Claims priority of provisional application 63/089,981, filed on Oct. 9, 2020.
Prior Publication US 2022/0115428 A1, Apr. 14, 2022
Int. Cl. H01L 27/146 (2006.01); G02B 5/22 (2006.01); G02B 5/28 (2006.01)
CPC H01L 27/14621 (2013.01) [G02B 5/22 (2013.01); G02B 5/28 (2013.01); H01L 27/14625 (2013.01); H01L 27/14643 (2013.01); H01L 27/14685 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An imaging device, comprises:
a plurality of optical sensors on an integrated circuit;
a plurality of sets of interference filters, wherein a set of interference filters of the plurality of sets of interference filters includes a plurality of interference filters that are arranged in a pattern, wherein each interference filter of the plurality of filters is configured to pass light in a different wavelength range; and
a plurality of sets of absorption filters, wherein a set of absorption filters of the plurality of sets of absorption filters includes a plurality of absorption filters that are arranged in a pattern, wherein each absorption filter is associated with two or more interference filters to create an absorption filter and interference filter pair, wherein each absorption filter and interference filter pair is configured to pass light in a narrower wavelength range than the absorption filter alone and wherein each absorption filter and interference filter pair is associated with one or more optical sensors of the plurality of optical sensors.