Degradation of III-V compound LED's with plastic lenses (Group 3-5 compound light emitting diode degradation modes and mechanisms, discussing epoxy lenses, light transmission characteristics, time and temperature functions and surface passivation)
Okamoto, H ; Nakaya, S ; Arai, Y
Reliability physics 1973; Proceedings of the Eleventh Annual Symposium, Las Vegas, Nev.; United States; 3-5 Apr. 1973, 1973, p.261-266