Usoro nha nke ọkụ ọkụ LED
Dị ka isi mmalite ọkụ ọdịnala, nkeji nyocha anya nke isi iyi ọkụ LED bụ otu. Iji mee ka ndị na-agụ ya ghọta ma jiri ya mee ihe nke ọma, a ga-ewebata ihe ọmụma dị mkpa n'okpuru ebe a:
1. Ntugharị na-egbuke egbuke
Mmụgharị na-egbuke egbuke na-ezo aka n'oke ọkụ na-ewepụta n'otu oge, ya bụ, akụkụ nke ike na-egbuke egbuke nke anya mmadụ nwere ike na-enwe mmetụta. Ọ hà nhata ngwaahịa nke ike na-egbuke egbuke nke otu band kwa nkeji oge yana ọnụego nlele nke band a. Ebe ọ bụ na anya mmadụ nwere dị iche iche ikwu elele ọnụego nke ìhè nke dị iche iche wavelengths, mgbe ike radieshon nke ìhè nke dị iche iche wavelengths hà nhata, luminous flux bụ hà. Akara ngosi nke luminous flux bụ Φ, na unit bụ lumens (Lm).
Dị ka spectral radiant flux Φ (λ), usoro flux nwere ike nweta:
Φ=Km■Φ(λ) gV(λ)dλ
N'ime usoro, V(λ) - arụmọrụ na-egbuke egbuke; Km — uru kacha elu nke arụmọrụ ọkụ na-egbuke egbuke, na Lm/W. N'afọ 1977, Kọmitii Na-ahụ Maka Ịdị arọ na nha nke mba ụwa kpebiri na uru km bụ 683Lm/W (λm=555nm).
2. Ike ọkụ
Ike ọkụ na-ezo aka na ike ọkụ na-agafe na mpaghara otu n'otu oge. Ike ahụ dabara na ugboro ole ma bụrụ nchikota nke ike ha (ya bụ integral). A pụkwara ịghọta ya dị ka ọkụ ọkụ nke I nke ìhè ọkụ na ntụziaka a nyere bụ isi iyi nke ọkụ na-egbuke egbuke d Φ na-ebufe na akụkụ akụkụ cube na ntụziaka nke kewara akụkụ akụkụ cube d Ω.
Akụkụ nke ike ọkụ bụ candela (cd), 1cd = 1Lm/1sr. Nchikota nke ike ọkụ n'akụkụ niile dị na mbara igwe bụ mgbawa ọkụ.
3. Onwunwu
N'ime usoro anyị nke ịnwale nchapụta nke ibe LED na ịtụle nchekwa nke radieshon ọkụ ọkụ LED, a na-ejikarị ụzọ onyonyo eme ihe, enwere ike iji onyonyo microscopic tụọ ule mgbawa. Ncha ọkụ na-egbuke egbuke bụ nchapụta L nke otu ebe dị n'elu ọkụ na-enye ìhè nke isi iyi, nke bụ ụda nke ìhè ihu nke ihu element d S na ntụziaka e nyere nke kewara site na mpaghara nke ihu akụkụ nke orthographic ntule na. ụgbọ elu perpendicular ka enyere ntụziaka
Akụkụ nke nchapụta bụ candela kwa square mita (cd/m2). Mgbe elu nke na-enwupụta ìhè na-adabere na ntụzịaka nha, cosθ=1.
4. Ọkụ
Ọkụ na-ezo aka n'ogo a na-amụnye ihe, nke na-egosipụta site n'ìhè na-egbuke egbuke enwetara n'otu mpaghara. Ihe na-egbuke egbuke na-ejikọta na isi iyi ọkụ na-egbuke egbuke, elu ọkụ na ọnọdụ nke ìhè na mbara igwe. Nha ahụ dabara na ike nke isi iyi ọkụ na akụkụ ihe merenụ nke ìhè ahụ, yana n'ụzọ dị iche na square nke anya site na isi iyi ọkụ ruo n'elu ihe ọkụ. Ihe na-egbuke egbuke E nke isi ihe dị n'elu bụ okwu nke ọkụ ọkụ d Φ merenụ na panel nke nwere isi ihe na-ekewa site na mpaghara panel d S.
Nkeji a bụ Lux (LX), 1LX=1Lm/m2.