US 11,796,723 B2
Optical devices
Zong-Ru Tu, Zhubei (TW)
Assigned to VISERA TECHNOLOGIES COMPANY LIMITED, Hsin-Chu (TW)
Filed by VisEra Technologies Company Limited, Hsin-Chu (TW)
Filed on Mar. 12, 2021, as Appl. No. 17/199,987.
Prior Publication US 2022/0291431 A1, Sep. 15, 2022
Int. Cl. G02B 5/20 (2006.01); G02B 5/18 (2006.01)
CPC G02B 5/208 (2013.01) [G02B 5/1809 (2013.01); G02B 5/1819 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a plurality of IR-cut pixels, wherein each IR-cut pixel comprises a first grating structure;
a plurality of IR-pass pixels; and
a plurality of grids surrounding the plurality of IR-cut pixels and the plurality of IR-pass pixels,
wherein each IR-cut pixel further comprises an IR-cut filter and a color filter,
wherein the IR-cut filter covers and fills in the first grating structure and the color filter is disposed on the IR-cut filter, or
the color filter covers and fills in the first grating structure and the IR-cut filter is disposed on the color filter.