US 11,867,562 B2
Optical devices
Lai-Hung Lai, Hsin-Chu (TW); Chin-Chuan Hsieh, Hsin-Chu (TW); and Chien-Ho Yu, Hsin-Chu (TW)
Assigned to VISERA TECHNOLOGIES COMPANY LIMITED, Hsin-Chu (TW)
Filed by VisEra Technologies Company Limited, Hsin-Chu (TW)
Filed on Jan. 25, 2022, as Appl. No. 17/583,676.
Prior Publication US 2023/0236066 A1, Jul. 27, 2023
Int. Cl. G01J 5/08 (2022.01); G01J 5/0806 (2022.01); G01J 5/20 (2006.01); G02B 5/08 (2006.01); G02B 5/20 (2006.01); G02B 27/30 (2006.01)
CPC G01J 5/0879 (2022.01) [G01J 5/0806 (2013.01); G01J 5/0896 (2013.01); G01J 5/20 (2013.01); G02B 5/0858 (2013.01); G02B 5/208 (2013.01); G02B 27/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a time-of-flight (TOF) sensor array;
a photon conversion thin film disposed above the time-of-flight sensor array;
a light source which emits light with a first wavelength towards the photon conversion thin film to be converted into light with a second wavelength received by the time-of-flight sensor array, wherein the second wavelength is longer than the first wavelength; and
an optical component group disposed on the time-of-flight sensor array, wherein the optical component group comprises a pinhole-type collimator and a filter, and the filter comprises a longpass (LP) filter or a narrow bandpass (NBP) filter.