Ana 'ana o ke kukui LED
E like me nā kumu kukui maʻamau, ʻokoʻa nā ʻāpana ana o nā kumu kukui LED. I mea e hoʻomaopopo a hoʻohana maʻalahi ai ka poʻe heluhelu, e hōʻike pōkole ʻia ka ʻike pili ma lalo nei:
1. ʻAla ʻālohilohi
Hōʻike ka luminous flux i ka nui o ke kukui i hoʻopuka ʻia e ke kumu kukui i kēlā me kēia ʻāpana manawa, ʻo ia hoʻi, ka ʻāpana o ka ikehu ʻālohilohi i hiki ke ʻike ʻia e ka maka kanaka. Ua like ia me ka huahana o ka ikehu kukuna o kekahi bana no ka wae manawa a me ka heluna nana pili o keia bana. No ka loa'a 'ana o ka maka o ke kanaka i ka 'ike like 'ole o ka malamalama o nā hawewe like 'ole, ke 'ano like ka mana ho'ohehe'e o ka malamalama o nā hawewe like 'ole, 'a'ole like ka 'olu'olu o ka malamalama. ʻO ka hōʻailona o ka ʻālohilohi ʻo Φ, a ʻo ka ʻāpana he lumens (Lm).
E like me ka spectral radiant flux Φ (λ), hiki ke kiʻi ʻia ke ʻano o ka luminous flux:
Φ=Km■Φ(λ)gV(λ)dλ
I ke kumu, V(λ)—relative spectral luminous efficiency; Km—ka waiwai nui loa o ka pono o ka malamalama lohi, ma Lm/W. I ka makahiki 1977, ua hoʻoholo ʻia ka helu Km e ke Kōmike Kaumaha a me nā Ana ʻĀina he 683Lm/W (λm=555nm).
2. Ka māmā māmā
ʻO ka ikaika māmā e pili ana i ka ikehu māmā e hele ana ma waena o kahi ʻāpana i kahi manawa. Pili ka ikehu i ka alapine a ʻo ia ka huina o ko lākou mau ikaika (ʻo ia hoʻi, integral). Hiki ke hoʻomaopopo ʻia e like me ka ikaika o ka mālamalama I o ke kumu kukui ma kahi kuhikuhi i hāʻawi ʻia ke kumu kukui ʻO ka quotient o ka luminous flux d Φ i hoʻouna ʻia i loko o ka ʻāpana kihi cube i ka ʻaoʻao i puʻunaue ʻia e ke kihi cube element d Ω
ʻO ka ʻāpana o ka ikaika kukui he candela (cd), 1cd=1Lm/1sr. ʻO ka huina o ka māmā māmā ma nā ʻaoʻao a pau o ka lewa, ʻo ia ka ʻālohilohi.
3. Olinolino
I kā mākou kaʻina hana e hoʻāʻo ai i ka ʻōlinolino o nā pahu kukui LED a me ka loiloi ʻana i ka palekana o ka radiation kukui LED, hoʻohana mau ʻia nā ʻano kiʻi kiʻi, a hiki ke hoʻohana ʻia ke kiʻi microscopic e ana i ka hoʻāʻo chip. ʻO ka ʻōlinolino ka ʻōlinolino L o kekahi wahi ma ka ʻili hoʻomālamalama o ke kumu kukui, ʻo ia ka quotient o ka ikaika o ka mālamalama o ka mea maka d S ma kahi kuhikuhi i puʻunaue ʻia e ka ʻāpana o ka ʻaoʻao o ka ʻaoʻao o ke alo. he mokulele e pili ana i ka kuhikuhi i haawiia
ʻO ka ʻāpana o ka ʻōlinolino he candela no ka mika square (cd/m2). Ke kū pololei ka ʻili hoʻomālamalama i ke kuhikuhi ana, cosθ=1.
4. Ka malamalama
ʻO ka hoʻomālamalama ʻana e pili ana i ke kiʻekiʻe o ka hoʻomālamalama ʻia ʻana o kahi mea, i hōʻike ʻia e ka flux kukui i loaʻa i kēlā me kēia wahi. ʻO ka hoʻomālamalamaʻana e pili ana i ke kumu kukui hoʻomālamalama, kaʻili i hoʻomālamalamaʻia a me ke kūlana o ke kumu kukui ma kahi ākea. Hoʻohālikelike ka nui i ka ikaika o ke kumu kukui a me ke kihi hanana o ka mālamalama, a hoʻohālikelike i ka huinahā o ka mamao mai ke kumu kukui a i ka ʻili o ka mea i hoʻomālamalama ʻia. ʻO ka mālamalama E o kahi kiko ma luna o ka ʻili, ʻo ia ka quotient o ka flux kukui d Φ hanana ma ka panel i loaʻa ka kiko i puʻunaue ʻia e ka ʻāpana o ka panel d S.
ʻO ka ʻāpana ʻo Lux (LX), 1LX=1Lm/m2.