G Lidgard et al 1973 J. Phys. D: Appl. Phys. 6 L75 doi:10.1088/0022-3727/6/7/101
G Lidgard, R Nicklin and P B Hart
Show affiliationsHigh-brightness solid-state light-emitting diodes are required for fibre-optic communications, for film marking and for scanned line arrays to display the output from thermal imaging systems. Using yellow-light-emitting GaP diodes, with the emission limited to a small area, brightnesses of 70 000 ft lamberts have been achieved at continuous currents of 400 mA. When operated with 1 μs pulses, brightnesses of up to 450 000 ft lamberts at 2 A have been estimated.
Issue 7 (1 May 1973)
Received 5 March 1973
G Lidgard et al 1973 J. Phys. D: Appl. Phys. 6 L75
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