Combinations of only three kinds of elements

Full Title

Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00 (controlling the distribution of the light emitted by adjustment of elements F21V14/00) > Combinations of only three kinds of elements

Child Classifications

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• F21V 13/14 the elements being filters or photoluminescent elements, reflectors and refractors