3D????????????????????????/?????????AR/VR???豸???????????????????????????????????????????????????????????????????????????????豸??????????Χ?????????????????????????????????м????У????????????????????SPAD?????????????dToF?????????????????????????Χ????????仯????????????С???????????????????????????3D???м?????

???????????????????TCSPC??????????????????????????????????????????TCSPC?????????SPAD????????????????????TDC???????д????????????????????????????????????????????????????????????SPAD???б?????????????????????????м????????????о??????????????????IO?????????????????????????

?????????????3D????????????????е?????????3D??????????????????о???SPAD??????????·??????????????????????????????????????????????????о????????????????о?????????????????????????·????????????????????????·????????????????????????SPAD??????Ч???PDE??????????????????????????????????????

???????????????????????????????????????????????????????????з????????????3D???У?dToF??о?????3????2021??7?￡???????????????????????3D?????????dToF????о?ADS3003??

?????·???????“A 240 x 160 3D Stacked SPAD dToF Image Sensor with Rolling Shutter and In Pixel Histogram for Mobile Devices”???????У???????????????????????SPAD??????????????????????????????????????????У?????SPAD????TDC??SRAM????????????1/4??SPAD??????????????????????????????????????????????????????????????????????У????HDC????????9.5 m?????????0.1%??????

3D????dToF??????????

3D????dToF???????????????????????16 μm???????240 x 160 SPAD???У????е????????16 x 16 SPAD??????饗TG????

16 x 16 SPAD??????饗TG???????????????TG?????????????饗SG???????SG?????????????????????????SG?е?SPAD????????TDC?????????????й???600??TDC??TG????????????λ???2????????????????????????

3D????dToF???????????·????

????е?TG??????????/?????GPIO?????з??????????10TG/GPIO????????SRAM?????????SG?е?????????????????????????????????????????????????????????????t?????????????????????????????????????????????????????????????????????????????????????Ч???????????????????????????????????????????????????????????????????SPI???????

??????????Flash??dToF???????????????μ??????TDC????????????????????????????????????????Flash TDC???????????event-driven????????????????????????????м????????????

????????????

dToF???????????3D???65 nm/65 nm CMOS?????????????????????????????????????????????顣dToF??????????????о??????????·?壨PCB???????????о?????????????????FoV???41°x 63°??2.3 mm????f/1.4???????940 nm?????????????PCB???????????????15 W??????????90 mW??940 nm?????淢?傷??????VCSEL??????????????????????????VCSEL???????45°x 60°??????????

??????Σ?????????????????10 MHz?????????FWHM???1.5 ns????????????????????????????25%??????????????????????????????????????????????????????????????????4???????????????????????????????17 mm x 21 mm x 6 mm????????????3D????????????硣

??????????????飬????????鰲???PCB???????????????????????У?FPGA????dToF??????????????ú????????????????????????????USB??????????????н?????????

?????????3D????dToF???????????????????3D???????????о??????????????????????????????????Flash 3D?????????????????RGB???????ο???

??????b????3D????dToF?????????????3D????????????????RGB??????3D???????????????????????????????????????????????????????????????????????????????

?????????3D?????????13 m

????10 klux?????4 m??50%????????3D????

????

?????????????????????????240 x 160????SPAD dToF???????????????3D????????????dToF????????????????????????????????????13 m flash???Χ??HQVGA??????0.1%???????????10 klux?????4 m????3D???????306 mW???????????3D????????SPAD??????????????????????????????棬???????????????????????????????????????HDC?????????????????????л??????????????????????????????????3D????dToF?????????????????豸?????????г??????????????

?????????

?????????????LiDAR????????????-2022?桷

??????????????????????-2020?桷

???????????????????????????????-2021?桷

??????????VCSEL???????г?-2021?桷

?????????????????????ü??г?-2021?桷