Tikanga Ine o te Tirohanga LED
Pērā i ngā puna marama tuku iho, he ōrite ngā waeine inenga whatu o ngā mātāpuna rama arahina. Kia mohio ai nga kaipanui me te whakamahi pai, ka whakamaarama poto nga matauranga e whai ake nei:
1. Rerewharewha
Ko te rere o te rama e tohu ana ki te nui o te rama e tukuna ana e te puna rama mo ia waeine wa, ara, ko te wahanga o te hiko o te hiko e rongohia ana e te kanohi tangata te mana kanapa. He rite ki te hua o te hiko o te raana o tetahi roopu mo ia waeine wa me te reiti tirohanga o tenei roopu. I te mea he rereke nga reiti tirohanga a te tangata mo te marama o nga roangaru rereke, i te wa e rite ana te mana iraruke o te marama o nga roangaru rereke, kaore e rite te rere o te marama. Ko te tohu o te rewharewha ko te Φ, ko te waeine he lumens (Lm).
E ai ki te rewharewha radiant spectral Φ (λ), ka taea te whakaputa i te tauira rewharewha marama:
Φ=Km■Φ(λ)gV(λ)dλ
I roto i te tātai, V(λ)—relative spectral luminous efficiency; Km—te uara teitei o te kakama maramara hiohio, i roto i te Lm/W. I te tau 1977, ko te uara Km i whakatauhia e te Komiti o te Ao mo nga Taumaha me nga Ine kia 683Lm/W (λm=555nm).
2. Te kaha marama
Ko te kaha o te marama e tohu ana ki te hiko marama e haere ana i roto i tetahi waahanga wae i te wa kotahi. He rite te kaha ki te auau, a, ko te tapeke o te kaha (arā, te whakauru). Ka taea hoki te mohio ko te kaha o te maramara I o te puna marama i roto i tetahi huarahi ko te puna marama Ko te wahanga o te rewharewha marama d Φ ka tukuna i roto i te huānga kokonga mataono i te ahunga wehea e te huānga kokonga mataono d Ω
Ko te waeine o te kaha kanapa ko candela (cd), 1cd=1Lm/1sr. Ko te tapeke o te kaha marama ki nga taha katoa o te mokowhiti ko te rewharewha marama.
3. Tirohanga
I roto i ta maatau mahi whakamatautau i te kanapa o nga maramara LED me te arotake i te haumaru o te rauropi rama LED, ka whakamahia nga tikanga whakaahua, ka taea te whakamahi i te whakaahua miihini ki te ine i te whakamatautau maramara. Ko te kanapa kanapa te kanapa L o tetahi waahi kei runga i te mata-a-marama o te puna marama, ko te reanga o te kaha kanapa o te huānga kanohi d S i roto i te ahunga kua wehea e te waahi o te mata o te huānga kanohi i runga. he rererangi e hāngai ana ki te ahunga kua tohua
Ko te waeine o te wherikotanga he candela mo ia mita tapawha (cd/m2). Ina e tika ana te mata tuku rama ki te ahunga ine, cosθ=1.
4. Whakamaramatanga
Ko te whakamarama e pa ana ki te tohu o te whakamaramatanga o tetahi mea, e whakaatuhia ana e te rewharewha o te marama i whakawhiwhia ki ia waahanga wae. Ko te whakamarama e pa ana ki te puna marama whakamarama, te mata marama me te waahi o te puna marama i te waahi. He rite te rahi ki te kaha o te puna marama me te koki maikitanga o te marama, me te taurite ki te tapawha o te tawhiti mai i te puna marama ki te mata o te mea whakamarama. Ko te maramatanga E o tetahi ira i runga i te mata ko te reanga o te rerenga marama d Φ maiki i runga i te papa e mau ana te ira kua wehea ki te horahanga o te papa d S.
Ko te waeine ko Lux (LX), 1LX=1Lm/m2.