Ma'aunin Zane-zanen Launi (CRI) hanya ce ta duniya baki ɗaya don bayyana launin da tushen haske ke nunawa. An tsara ta ne don samar da ingantaccen kimantawa na ma'aunin yadda launin wani abu a ƙarƙashin tushen hasken da aka auna ya yi daidai da launin da aka gabatar a ƙarƙashin tushen hasken da aka ambata. Hukumar Internationale de l'eclairage (CIE) ta sanya ma'aunin nuna launin hasken rana a 100, kuma ma'aunin nuna launin fitilun incandescent yana kusa da na hasken rana kuma saboda haka ana ɗaukarsa a matsayin tushen haske mafi kyau.
CRI muhimmin abu ne don auna ikon tushen haske na sake haifar da launin wani abu. Babban darajar CRI, ƙarfin ikon tushen haske na dawo da launin abin, kuma yana da sauƙi ga idon ɗan adam ya bambanta launin abin.
CRI hanya ce ta auna aikin tushen haske a gane launi idan aka kwatanta da tushen haske na yau da kullun (kamar hasken rana). Ma'auni ne da aka yarda da shi sosai kuma hanya ce kawai ta kimantawa da bayar da rahoton yadda tushen haske yake nuna launi. Nuna launi kimantawa ce ta inganci wacce ke auna matakin da tushen haske ke gabatar da launin abu, wato, yadda yaduwar launi take da gaske.
Tsarin launi mai haske mai haske (CRI≥90) na iya samar da haske mai laushi, rage gajiyar gani yadda ya kamata, ya sa fagen gani ya fi haske da kuma hoton ya fi girma uku; yana kawo wa masu amfani da shi haske mai haske da kuma hasken waje mai sauƙi. Tsarin launi mai haske yana da tasirin sake haifar da launi mai kyau, kuma launukan da muke gani sun fi kusa da launuka na asali (launuka a ƙarƙashin hasken rana); ƙarancin launi yana da ƙarancin sake haifar da launi, don haka bambance-bambancen launi da muke gani sun fi girma.
Yadda ake zaɓar ma'aunin nuna launi/launi yayin siyan kayan aikin haske?
Lokacin zabar canza launi, yawanci ana bin ƙa'idodi guda biyu, wato ƙa'idar canza launi mai aminci da kuma ƙa'idar canza launi mai inganci.
(1) Ka'idar yin launi mai aminci
Ka'idar yin launi mai aminci yana nufin cewa domin a wakilci launin asali na abu daidai, ana buƙatar zaɓar tushen haske mai ma'aunin launi mafi girma. A wannan yanayin, ana iya yin zaɓi bisa ga ƙimar Ra. Girman ƙimar Ra, mafi girman matakin dawo da launin asali na abu. Aikace-aikace daban-daban suna da buƙatu daban-daban don yin launi mai aminci na tushen haske.
Dangane da wurare daban-daban da suka dace, Hukumar Kula da Haske ta Duniya (CIE) ta raba ma'aunin nuna launuka zuwa rukuni biyar:
| Nau'in nuna launi | Darajar Ra | nuna launi | Bukatun amfani/yin amfani da launuka masu aminci |
| 1A | 90-100 | mai kyau kwarai | Inda ake buƙatar daidaiton bambancin launi |
| 1B | 80-89 | mai kyau | Inda ake buƙatar nuna matsakaicin launi |
| 2 | 60-79 | na yau da kullun | Inda ake buƙatar nuna matsakaicin launi |
| 3 | 40-59 | ƙarancin talauci | Wuraren da ke da ƙarancin buƙatun nuna launi |
| 4 | 20-39 | matalauta | Wuraren da ba su da takamaiman buƙatu don nuna launi |
(2) Ka'idar launi mai tasiri
Ka'idar yin amfani da launuka masu tasiri ita ce a wasu wurare kamar kabad na nunin kayan nama, domin a haskaka takamaiman launuka da kuma nuna kyakkyawar rayuwa, ana buƙatar zaɓar takamaiman ma'aunin nuna launuka. Dangane da tabbatar da cewa ƙimar Ra ta cika buƙatun, ana ƙara ma'aunin nuna launuka na musamman da ya dace daidai da launin abin da aka haskaka.
A fannin nuna nama a manyan kantuna da shaguna daban-daban, ma'aunin launi na R9 na tushen haske yana da matuƙar muhimmanci, saboda launin nama yawanci yana karkata zuwa ja, kuma mafi girma R9 na iya sa naman ya zama sabo da daɗi a gani.
Ga al'amuran kamar matakan wasan kwaikwayo da ɗakunan motsa jiki waɗanda ke buƙatar ingantaccen kwafi na launukan fata, ma'aunin nuna launi na R15 na tushen haske dole ne ya cika babban matsayi.
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Ma'aunin launi na ka'idar fitilun incandescent shine 100. Duk da haka, a rayuwa, akwai nau'ikan fitilun incandescent da yawa waɗanda ke da amfani daban-daban. Saboda haka, ƙimar Ra ba iri ɗaya ba ce. Ana iya cewa kusan 100 ne kawai, wanda ake ɗauka a matsayin tushen haske tare da mafi kyawun aikin nuna launi. . Duk da haka, wannan nau'in tushen haske yana da ƙarancin ingancin haske kuma ba shi da fa'idodin adana makamashi da kariyar muhalli. Sabanin haka, kodayake fitilun LED sun ɗan yi ƙasa da fitilun incandescent dangane da aikin nuna launi, sun zama tushen haske mafi shahara saboda kaddarorinsu na adana makamashi da kuma kare muhalli.
Bugu da ƙari, idan jikin ɗan adam ya fuskanci yanayin haske mai kyau tare da ƙarancin aikin nuna launi na dogon lokaci, saurin jin daɗin ƙwayoyin ido na mutum zai ragu a hankali, kuma kwakwalwa na iya mayar da hankali sosai ba tare da son rai ba yayin gano abubuwa, wanda zai iya haifar da gajiyar ido har ma da myopia.
Bai kamata a yi amfani da ma'aunin launi na tushen hasken aji a matsayin maki 80 ba. Ƙarancin launi na hasken aji zai shafi yadda idanun ɗalibai ke gane launin abubuwa daidai, wanda hakan zai sa abubuwa ba za su iya nuna ainihin launukansu ba. Idan wannan yanayi ya ci gaba na dogon lokaci, zai haifar da raguwa da raguwar ikon nuna bambancin launi, wanda hakan zai haifar da matsaloli masu tsanani na gani da cututtukan ido ga ɗalibai kamar makantar launi da raunin launi.
Ana amfani da ma'aunin nuna launi na Ra>90 don hasken ofis, gamsuwar kamanninsa na iya rage hasken fiye da kashi 25% idan aka kwatanta da kayan hasken da ke da fitilar nuna launi mai ƙarancin launi (Ra<60). Ma'aunin nuna launi da hasken tushen haske tare suna ƙayyade kyawun gani na muhalli, akwai alaƙa mai daidaito tsakanin haske da ma'aunin nuna launi.
Lokacin Saƙo: Afrilu-03-2024
