Bayanin Ƙarfin Haske
- LED asali ilmi
1. Binciken raka'o'in ma'aunin ƙarfin haske da aka saba amfani da su
Nau'in ma'aunin haske mai haske na jikin mai haske shine:
1. Naúrar haskakawa: Lux
2. Naúrar juzu'i mai haske: Lumen
3. Naúrar ƙarfin haske mai haske: Ƙarfin kyandir
Anan da farko bayyana 1CD (hasken kyandir: Candela): yana nufin wani abu mai haskakawa gaba ɗaya, a wurin daskarewa na platinum, ƙarfin haske na kowane yanki na sittin murabba'i.
Yi bayani kuma 1Lux (lux): yana nufin haskakawa lokacin da hasken hasken da aka samu a kowace murabba'in mita 1 lumen. Dangantakar da ke tsakanin haske, haske da nisa ita ce: E (haske) = I (luminosity)/r2 (kilasi mai nisa)
A ƙarshe, yi bayanin 1L (lumens): hasken hasken kyandir 1 CD ya haskaka akan jirgin sama mai nisa na 1 cm da yanki na 1 cm 2.
2. LED luminous tsanani raka'a don kawar da shakku
Masu hasashe masu aiki kamar LEDs da fitilun fitulu suna amfani da hasken kyandir (CD) azaman naúrar ƙarfin haske. Ana amfani da raka'o'in juzu'i masu haske (L) don haskakawa ko abubuwa masu shiga. Ana amfani da sashin haske Lux a cikin daukar hoto da sauran fagage. Waɗannan raka'o'in ma'auni guda uku suna daidai da lambobi, amma suna buƙatar fahimta ta kusurwoyi daban-daban. Misali, haske (hasken haske) na majigi na LCD shine 1600 lumens. Idan an yi hasashe akan allon nuni mai girman inci 60 (mita murabba'in 1), hasken yana da 1600 lux. Idan muka ɗauka cewa fitilun hasken yana da nisa da cm 1 daga hasken hasken kuma yankin hasken ya kasance 1 cm2, to ƙarfin hasken hasken shine 1600CD. Koyaya, a zahiri, saboda asarar watsa haske, tunani ko asarar fim ɗin watsa haske na majigi na LCD, haskensa gabaɗaya na iya kaiwa 50% inganci. Dangane da ƙwarewar aikace-aikacen yanzu, allon nunin LED na waje dole ne ya sami haske fiye da 4000CD/m2 don samun ingantaccen tasirin nuni a ƙarƙashin hasken rana. Don LEDs na cikin gida na yau da kullun, matsakaicin haske shine kusan 700 zuwa 2000 CD/m2.
A ƙarshe, ya kamata a lura cewa ƙarfin haske da aka ba da ita ta hanyar masana'anta na LED yana nufin wurin da aka kunna LED a halin yanzu na 20 mA, kuma ƙarfin haske a mafi kyawun kallo kuma matsayi na tsakiya shine mafi girma. Ta wannan hanyar, duk da cewa hasken LED guda ɗaya yana cikin naúrar CD, haskensa ba shi da alaƙa da launi na LED. Gabaɗaya magana, ƙarfin haske na bututu ɗaya yakamata ya kasance daga ƴan mCD zuwa 5000mCD.
