ʻO nā kānana ʻoki infrared, i kapa ʻia i kekahi manawa nā kānana IR a i ʻole nā kānana omo wela, ua hoʻolālā ʻia e hōʻike a ālai paha i nā nalu kokoke i ka infrared i ka wā e hoʻouna ana i ka mālamalama ʻike ʻia. Hoʻohana pinepine ʻia lākou i nā lako me nā kukui incandescent ʻālohilohi (e like me nā slide a me nā projectors) e pale aku i ka hoʻomehana pono ʻole. Ma muli o ke kiʻekiʻe o ka ʻike o nā mea ʻike kamera he nui i ka mālamalama kokoke i ka infrared, aia kekahi mau kānana i hoʻohana ʻia i nā kāmela solid-state (CCD a i ʻole CMOS) e ālai i ka mālamalama infrared. ʻO ka maʻamau, he uliuli ka waihoʻoluʻu o kēia mau kānana no ka mea ke ālai nei lākou i kekahi manawa i kekahi o nā kukui mai nā nalu ʻulaʻula lōʻihi. Hiki i nā kānana IR ke aniani, hina, gradient a i ʻole nā kala like ʻole.
ʻAʻole e like me ka maka, ʻo nā sensor e pili ana i ka silicon (me nā CCD a me nā sensor CMOS) he mau ʻike koʻikoʻi e hoʻonui ana i ka infrared kokoke. Hiki i kēlā mau sensor ke hoʻonui a hiki i 1000 nm. Hoʻohana ʻia nā kānana IR e hoʻololi i ka mālamalama i hoʻouna ʻia ma o ka lens i ka sensor kiʻi e pale aku i nā kiʻi ʻano ʻē. Hoʻohana pinepine ʻia nā kānana hoʻouna IR (ka hoʻouna ʻana) a i ʻole ka wehe ʻana i nā kānana pale IR hale hana i ke kiʻi IR e hoʻouna i ka mālamalama IR a ālai i ka mālamalama ʻike ʻia a me ke kukui UV. ʻIke ʻia kēia kānana he ʻeleʻele i ka maka, akā he moakāka ke nānā ʻia me nā mea hana IR-sensitive.
I ka wā mua, ua hoʻohana ʻia nā kānana IR i ke kiʻi ʻoniʻoni e hoʻomaikaʻi i ke kiʻi ʻeleʻele a me ke keʻokeʻo. Ma ka hoʻohui ʻana i nā kānana o nā kala like ʻole, hiki i nā mea paʻi kiʻi ke hoʻohui i ka hohonu, hoʻomaikaʻi i ke ʻano ʻokoʻa, a hoʻemi i ka ʻālohilohi e hiki ke hōʻino i kahi kiʻi.
Loaʻa nā ʻano kānana like ʻole no ka ʻike mīkini ʻoihana. Hiki i nā kānana ke hoʻokō i nā hopena kupaianaha, hoʻomaikaʻi i ka ʻike ʻana o nā kikoʻī kikoʻī, a hoʻomaʻalahi pinepine i kāu mau hana ʻike mīkini.
Eia kekahi laʻana, ʻo kahi kānana bandpass i hoʻonohonoho pū ʻia me ke kukui e hoʻohana ʻia nei e ʻae iā ʻoe e kānana i ka mālamalama ambient i hoʻopiha pinepine ʻia. Eia kekahi, i nā noi maʻamau, ʻike pinepine ʻia nā waiwai ʻike ʻole ʻia o nā mea me ka hoʻohana ʻana i nā kānana kūpono.
Hāʻawi ʻo CHANCCTV iā ʻoe i kahi ākea o nā kānana like ʻole no kēlā me kēia lens.
940nm Narrow Bandpass
IR650-850nm Pālua Bandpass
Pākuʻi Bandpass IR650nm
IR800-1000nm Longpass