US 12,135,434 B2
Polarization spectral filter, polarization spectral filter array, and polarization spectral sensor
Yeonsang Park, Seoul (KR); Hyochul Kim, Yongin-si (KR); Jaesoong Lee, Suwon-si (KR); and Younggeun Roh, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 16, 2023, as Appl. No. 18/336,502.
Application 18/336,502 is a continuation of application No. 17/095,477, filed on Nov. 11, 2020, granted, now 11,719,951.
Claims priority of application No. 10-2019-0171993 (KR), filed on Dec. 20, 2019.
Prior Publication US 2023/0333397 A1, Oct. 19, 2023
Int. Cl. G02B 27/28 (2006.01); G01J 4/04 (2006.01); G02B 5/20 (2006.01); G02B 5/28 (2006.01)
CPC G02B 27/288 (2013.01) [G01J 4/04 (2013.01); G02B 5/203 (2013.01); G02B 5/286 (2013.01); G02B 5/288 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A polarization spectral filter comprising:
a first reflector;
a second reflector disposed to face the first reflector; and
a grating layer disposed between the first reflector and the second reflector and configured to transmit more of a light having a first linear polarization component than a light having a second linear polarization component perpendicular to the first linear polarization component,
wherein each of the first reflector and the second reflector comprises a first dielectric material having a first refractive index and a second dielectric material having a second refractive index different from the first refractive index, and
wherein the grating layer comprises a plurality of first grating elements and a plurality of second grating elements, the plurality of first grating elements comprising a third dielectric material having a third refractive index and the plurality of second grating elements comprising a fourth dielectric material having a fourth refractive index different from the third refractive index.