Lamp

LED module and lamp light distribution curve detection

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  1. 详细信息

Basic introduction


LED light source is used in the field of lighting because of its low energy consumption and high luminous efficiency. With the development of technology, this kind of lighting is deployed among users in multiple sections. Lamps and lanterns highlight the advantages of energy conservation and have a long service life. The color of the light illuminated by this kind of lamps is highly variable. If the light distribution method is used flexibly and properly, combined with the unique advantages of energy saving, it can be widely used in all kinds of environmental lighting. Also because of the direct light characteristics of LED light source, how to design scientific and reasonable light distribution on lamps is very important. The luminescent characteristics of lamps are closely related to the lighting source, light transmission and reflection, and all kinds of dimming accessories, which have a great impact on the final light distribution curve of lamps. The selection of LED, a new light source, cannot be separated from the selection of light distribution curve.


Technical characteristics


Measure the spatial light intensity distribution curve, light intensity data, regional luminous flux, lamp efficiency, brightness distribution, utilization coefficient and brightness limit curve of lamps. Glare level, budget curve, large allowable distance ratio, effective luminous angle, upward luminous flux, luminous flux, illuminance curve, light intensity curve and other photometric parameters.


Chromaticity test


Method 1 integrating sphere spectroradiometer


Reference standard:


IESNA lm79-08 electrical and photometric measurement of solid state lighting products


Cie15:2004 colorimetry


Cie13.3:1995 evaluation of color rendering of light source



Method 2 distributed spectral radiometer


Reference standard:


Esna lm79-08 electrical and photometric measurement of solid state lighting products


Cie15:2004 colorimetry


Cie13.3:1995 evaluation of color rendering of light source


Test items:


Average color unevenness


Color width capacity (color tolerance)


Relevant color temperature


Color rendering index


Chromatic aberration drift


Chromatic coordinates


Color tolerance


Color space nonuniformity