Open AccessOptimal Design of Secondary Optics for Narrowing the Beam Angle of an LED Lamp with a Large-Area COB-type LED Package
Author(s) -
김봉준,
김대찬,
오범환,
박세근,
김봉호,
이승걸
Publication year - 2014
Publication title -
han-guk gwanghak hoeji/han'gug gwanghag hoeji
Language(s) - English
Resource type - Journals
eISSN - 2287-321X
pISSN - 1225-6285
DOI - 10.3807/kjop.2014.25.2.078
Subject(s) - optics , beam (structure) , physics , materials science