Kusukela kumamojula we-ToF wakudala ukuya ku-DMS yamanje, wonke asebenzisa ibhendi ye-infrared eseduze:
Imojula ye-TOF (850nm/940nm)
I-LiDAR (905nm/1550nm)
I-DMS/OMS (940nm)
Ngesikhathi esifanayo, iwindi le-optical liyingxenye yendlela yokubona yomtshina/umamukeli. Umsebenzi wayo oyinhloko ukuvikela umkhiqizo ngenkathi idlulisa i-laser yobude obuthile obukhishwa umthombo we-laser, futhi iqoqa amaza okukhanya ahambisanayo abonisiwe ngefasitela.
Leli windi kufanele libe nemisebenzi elandelayo eyisisekelo:
1. Kubonakala kumnyama ngokubonakalayo ukumboza amadivaysi e-optoelectronic ngemuva kwefasitela;
2. I-reflection jikelele ye-surface yefasitela le-optical iphansi futhi ngeke ibangele ukubonakaliswa okusobala;
3. Inokudluliselwa okuhle kwebhendi ye-laser. Isibonelo, kumtshina we-laser we-905nm ovame kakhulu, ukudluliswa kwefasitela kubhendi ye-905nm kungafinyelela ngaphezu kwama-95%.
4. Hlunga ukukhanya okuyingozi, thuthukisa isilinganiso sesignali-kumsindo wesistimu, futhi uthuthukise amandla okuthola isivalo.
Kodwa-ke, i-LiDAR ne-DMS kokubili yimikhiqizo yezimoto, ngakho-ke ukuthi imikhiqizo yefasitela ingahlangabezana kanjani nezidingo zokuthembeka okuhle, ukuhanjiswa okuphezulu kwebhande lomthombo wokukhanya, nokubukeka okumnyama sekuyinkinga.
01. Isifinyezo sezixazululo zewindi ezisemakethe njengamanje
Kunezinhlobo ezintathu ngokuyinhloko:
Thayipha 1: I-substrate yenziwe nge-infrared material
Lolu hlobo lwezinto ezibonakalayo lumnyama ngoba lukwazi ukumunca ukukhanya okubonakalayo futhi ludlulise amabhande aseduze ne-infrared, ngokudluliswa kwedatha okungaba ngu-90% (okufana no-905nm kubhendi ye-infrared eseduze) kanye nokubonakala okuphelele okungaba ngu-10%.
Lolu hlobo lwezinto lungasebenzisa ama-resin substrates e-infrared akhanye kakhulu, njenge-Bayer Makrolon PC 2405, kodwa i-resin substrate inamandla okubopha ampofu nefilimu ye-optical, ayikwazi ukumelana nokuhlolwa okunzima kwemvelo, futhi ayikwazi ukugqitshwa ngefilimu ethembekile ye-ITO esobala kakhulu (esetshenziselwa ukufaka ugesi nokuwohloka), ngakho-ke lolu hlobo luvame ukusetshenziswa kumafasitela angenalutho azidingi ukufudumeza.
Ungakwazi futhi ukukhetha ingilazi emnyama ye-SCHOTT RG850 noma i-Chinese HWB850, kodwa izindleko zalolu hlobo lwengilazi emnyama ziphezulu. Ukuthatha ingilazi ye-HWB850 njengesibonelo, izindleko zayo zingaphezu kwezikhathi ezingu-8 zengilazi evamile ye-optical yobukhulu obufanayo, futhi iningi lalolu hlobo lomkhiqizo alikwazi ukudlula izinga le-ROHS ngakho-ke alikwazi ukusetshenziswa kumafasitela e-lidar akhiqizwa ngobuningi.
Uhlobo 2: usebenzisa i-infrared transmissive infrared
Lolu hlobo lukayinki olubona ngeso lefoni lumunca ukukhanya okubonakalayo futhi lungadlulisela amabhande e-infrared aseduze, ngokudlulisela cishe ku-80% kuya ku-90%, futhi izinga lokudlulisela liphansi. Ngaphezu kwalokho, ngemva kokuthi uyinki ehlanganiswe ne-optical substrate, ukumelana nesimo sezulu akukwazi ukudlula izimfuneko eziqinile zokumelana nesimo sezulu sezimoto (njengokuhlolwa kwezinga lokushisa eliphezulu), ngakho oyinki abangena nge-infrared basetshenziswa kakhulu kweminye imikhiqizo enezidingo eziphansi zokumelana nesimo sezulu njengamafoni ahlakaniphile namakhamera we-infrared.
Thayipha 3: usebenzisa isihlungi esibonakalayo esimnyama
Isihlungi esinamaqabunga amnyama yisihlungi esingavimba ukukhanya okubonakalayo futhi sinokudluliswa okuphezulu kubhendi ye-NIR (efana ne-905nm).
Isihlungi esinamaqabunga amnyama siklanywe nge-silicon hydride, i-silicon oxide nezinye izinto zefilimu emincane, futhi silungiswa kusetshenziswa ubuchwepheshe be-magnetron sputtering. Ibonakala ngokusebenza okuzinzile nokuthembekile futhi ingakhiqizwa ngobuningi. Njengamanje, amafilimu ajwayelekile okuhlunga amnyama ngokuvamile athatha isakhiwo esifana nefilimu evala ukukhanya. Ngaphansi kwenqubo evamile yokwenza ifilimu ye-silicon hydride magnetron sputtering, ukucatshangelwa okuvamile ukunciphisa ukumuncwa kwe-silicon hydride, ikakhulukazi ukumuncwa kwebhendi eseduze ne-infrared, ukuze kuqinisekiswe ukudluliswa okuphezulu kubhendi engu-905nm noma amanye amabhendi e-lidar afana no-1550nm.
Isikhathi sokuthumela: Nov-22-2024
