He aha ka L70?
ʻEkolu mea hiki ke pepehi i ka LED. Hiki i ka wela, ka lepo a me ka makū ke hoʻopilikia i ke ola LED. ʻO ka ʻoiaʻiʻo, ʻoiai inā hiki i nā LED ke mau loa, e emi mālie ko lākou puka lumen i ka manawa a hiki i ka wā ʻaʻole lākou e hana hou i kumu kukui pono. Kapa mākou i kēia "ka helu mālama lumen." Ua hoʻoholo ka ʻoihana ʻaʻole lilo nā LED i kumu pono o ka mālamalama ke hoʻemi ʻia ka puka lumen i 70% o kāna mau lumens mua. Kapa ʻia kēia ʻo L70.
ʻO ka L70 kahi maʻamau ana ola i hoʻomohala ʻia e IESNA (Illuminating Engineering Society of North America) e loiloi i ke ola o kahi luminaire LED a hiki i ka hoʻemi ʻia ʻana o nā hola i manaʻo ʻia o ka puka māmā i 70% o ka pae mua. A i ʻole inā he 70% ka puka lumen o kāna puka mua. No ka laʻana, inā hoʻomaka ka LED e hoʻomālamalama i 100 lumens a ma hope o 40,000 mau hola e hoʻokuʻu wale ia i 70 lumens (70% o ka hoʻopuka kumu) a laila ʻo ka L70 i manaʻo ʻia ke ola o kēia LED he 40,000 mau hola.
ʻAʻole hāʻule nā LED a "puhi" e like me nā kumu kukui ʻē aʻe; akā, emi mālie lākou a hiki i ka wā ʻaʻole e hana hou i nā kukui pono. Hoʻoholo maʻamau ʻo ka maka o ke kanaka ke maʻalahi wale i ka lumen degeneration o 30% a i ʻole. No laila, ua wehewehe ʻia ke ola L70 e ka Lighting Engineering Society Standard LM-80-08, i kapa ʻia ʻo "Methods for Measuring Lumen Maintenance of LED Light Sources Approved by IES".
ʻO ke ola o ka L70 e pili ana i nā ʻano like ʻole, e like me ka mahana hana, ka hoʻokele o kēia manawa, a me ka ʻenehana a me nā mea i hoʻohana ʻia no ke kūkulu ʻana i ka huahana.