[ Rima ikozvino ] - Yakadzika yakasviba ikozvino yakakosha pakufungidzira kwangu? |

Rima ikozvinoinzvimbo yekurira kwekamera iri tembiricha- uye kuratidzwa-nguva-inotsamira, inoyerwa mumaerekitironi pa pixel, pasekondi yenguva yekuratidzwa. Kune maapplication anoshandisa nguva yekuratidzwa isingasviki sekondi imwe, ine yakasviba ikozvino isingasviki 1e-/p/s, inogona kuwanzo kuregererwa muchiratidzo-ku-ruzha-retio kuverenga.

Semuenzaniso, parima razvino kukosha re 0.001 e/p/s, nguva yekuratidzwa ye1ms kana 60 masekonzi zvese zvinotungamira kune ruzha rusina basa, uko kukosha kweruzha kunopihwa nerima razvino kukosha kwakapetwa nenguva yekuratidzwa, zvese pasi peskweya mudzi. Zvisinei, imwe kamera yakasiyana ine 2e-/p/s pa 60s exposure yaizopa imwe yekuwedzera √120 = 11e- yerima razvino ruzha, iro ringave rakanyanya kukosha kupfuura ruzha rwekuverenga pazasi mwenje mwero. Zvakadaro, pa1ms kuratidzwa, kunyangwe iyi yakakwira rima ikozvino nhanho ingave isina basa.

Mufananidzo 1: Mufananidzo 1 (a) unobva kuTucsen yakatonhorera CMOS kameraFL 20BWkuti yakasviba ikozvino yakaderera se0.001e/pixel/s. Mufananidzo 1(b) unoratidza kuti Mufananidzo 1(a) unea yakanaka background iyoaIngangodzivirirwa kune yakasviba ruzha ruzha kunyangwe nguva yekuratidzira yakareba se10s.

Rima razvino ruzha runokonzerwa nekupisa kwekufamba kwemaerekitironi mukati me sensor kamera. Maatomu ese anonzwa kuzunguzika kwemafuta, uye nguva nenguva maerekitironi anogona 'kusvetuka' kubva muchikamu che sensor kamera kupinda mugomba repixel panochengetwa maphotoelectrons anoonekwa. Hazvibviri kusiyanisa pakati pemaerekitironi aya 'anopisa' nemaerekitironi akabuda kuburikidza nekubudirira kuona kwephoton. Munguva yekuratidzwa kwemufananidzo, aya maerekitironi anopisa anogona kuvaka, zvichibatsira kune kumashure kwakasviba kwazvino chiratidzo. Nekudaro, iyo nhamba chaiyo yemaerekitironi haina kurongeka, zvinotungamira kune mupiro werima razvino ruzha. Pakupera kwekuratidzwa, mhosva dzese dzinoyerwa dzakacheneswa kubva papixel yakagadzirira kuratidzwa kunotevera.

Rima razvino ruzha rinotsamira tembiricha, asi zvakare rinotsamira zvakanyanya pane dhizaini yekamera sensor uye dhizaini uye kamera yemagetsi, saka inogona kusiyanisa zvakanyanya kubva kamera kuenda kamera pane imwechete sensor tembiricha.

Yakadzika yakasviba ikozvino yakakosha pakufungidzira kwangu?Kunyangwe iyo yakapihwa yakasviba kukosha kwazvino ichabatsira zvakanyanya kumifananidzo yako 'signal-to-noise ratio uye mhando yemufananidzo zvinoenderana zvachose nemufananidzo wako wekufungidzira.

Kune yakakwirira-yechiedza yekufungidzira mamiriro ane zviuru zvemafotoni papixel mushure mekuratidzwa kwekamera, yakasviba ikozvino haigone kuve yakakosha mumhando yemufananidzo kunze kwekunge kuratidzwa ti.mes akareba kwazvo (makumi emasekonzi kusvika kumaminitsi) senge mune zvekuongorora nyeredzi.