агол на зрак

агол на зрак

The angular dimension of the cone of light from reflectorized lamps (such as R and PAR types) encompassing the central part of the beam out to the angle where the intensity is 50% of maximum. The beam angle sometimes called "beam spread" is often part of the ordering code for the reflectorized lamps. Example: The 50PAR30/HIR/NFL25 is a 50 watt PAR30 narrow flood lamp with a beam angle of 25 degrees (See FIELD ANGLE).

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Loại từ: noun
Từ đồng nghĩa:
Blossary:
Ngành nghề/Lĩnh vực: Lights & lighting
Category: Lighting products
Company: GE
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