ʻO LED kahi mea semiconductor, nona nā ʻōlelo aʻe:
Nā diodes kukui: Ke hoʻokomo ʻia nā electrons i loko o ke LED i loko o ka P -type semiconductor crystal, e hana nā electrons a me nā lua i kahi hopena composite a hana i nā photons.
 
Misiona: Hiki i ka LED ke hoʻokō i nā kala ʻulaʻula a me ka ʻōlinolino ma o ka ʻenehana modulation.
 
Manaʻo: Hiki i ka LED ke hoʻomalu i nā ʻāpana e like me ke kala ʻālohilohi a me ka ʻālohilohi ma o ka mana uila, ka manawa a me nā ʻano hana ʻē aʻe.