FIELD: physics.
SUBSTANCE: light source which uses a light-emitting diode with a wavelength converting element is configured to produce a non-uniform angular colour distribution which can be used with a specific optical device which transforms the angular colour distribution into a uniform colour distribution. The ratio of height and width for the wavelength converting element is selected to produce the desired non-uniform angular colour distribution.
EFFECT: use of controlled angular colour non-uniformity in the light source and use thereof in applications which transform the non-uniformity into a uniform colour distribution increases the efficiency of the system compared to conventional systems in which a uniform angular light-emitting diode is used.
12 cl, 10 dwg
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