LED photoelectric performance testing    

Luminous flux

Method 1 Integrating sphere spectral radiometer

Reference standards:

CIE84:1989. The Measurement of Luminous Flux.

IESNA LM79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

Method 2 Distribution photometer

Reference standards:

CIE84:1989. The Measurement of Luminous Flux.

IESNA LM79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

Test items:

Beam angle | band light | through peak wavelength | color coordinate | light efficiency | spectral power distribution | lumen maintenance | color tolerance | luminous flux | chromatic aberration | color rendering index

Light intensity distribution (distribution curve flux)

Method: Distributed photometer

Reference standards:

IESNA LM79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

CIE 121:1998 The Photometry and Goniophotometry of Luminaires

CIE 043:1979 Photometry of floodlights

GB/T 9468-2008 General Requirements for the Photometry and Goniophotometry of Luminaires

GB/T 7002:2008 Photometry of Floodlight

Test items:

Luminaire energy efficiency | luminance distribution | proposed curve of indoor luminaires | total luminous flux | plane equiillumination curve | rectangular equiillumination curve | beam angle | luminance limit curve | equiillumination distribution curve | circular band optical flux | circular equiillumination curve

Chroma test

Method 1 Integrating sphere spectral radiometer

Reference standards:

IESNA LM79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

CIElS:2004 Chromaticity

CIE13.3:1995 Method of Measuring and Specifying Color Rendering Properties of Light Sources

Method 2 Distributed spectral radiometer

Reference standards:

IESNA LM79-08 Electrical and Photometric Measurements of Solid-State Lighting Products

CIElS:2004 Chromaticity

CIE13.3:1995 Method of Measuring and Specifying Color Rendering Properties of Light Sources

Test items:

Average color inhomogeneity | color width capacity (color tolerance) | color rendering index | color coordinate | color space inhomogeneity | maximum color inhomogeneity | correlation color temperature | color tolerance drift | color tolerance

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