The luminaire light distribution performance test solution uses a goniophotometer system to measure spatial light intensity distribution, total luminous flux, light distribution curves and iso-illuminance curves. The luminaire under test remains stationary during measurement for optimal stability. Test results can be exported in IES, LDT and other formats for international lighting design software. The solution is designed in accordance with GB/T 39394, CIE S 025, CIE 239, IESNA LM-79 and related standards, and is suitable for photometric and light distribution testing of indoor luminaires, road lights, floodlights, plant growth lights and other light sources and luminaires.

With an optional spectroradiometer, spatial color distribution, average color characteristics and spatial non-uniformity of light sources and luminaires can be measured. The system supports CIE B-β, C-γ and other measurement schemes, and can output zonal luminous flux, UGR, EEI, effective emission angle, upward/downward flux, utilization coefficient, PPFD and other parameters to meet the light distribution testing needs of testing institutions and lighting manufacturers.

Key Features

• Compliant with GB/T 39394, CIE S 025, CIE 239, IES LM-79 and related international standards
• Spatial light intensity distribution, total luminous flux, light distribution curves; IES, LDT standard output
• Full parameters including UGR, EEI, zonal flux, utilization coefficient, PPFD
• Luminaire remains stationary during measurement; data ready for lighting design software

Technical specifications

• Measurement schemes: CIE B-β, C-γ, etc.; luminaire under test remains stationary;
• Applicable luminaires: indoor, road, floodlight, plant growth, general lighting, etc.;
• Optional spectroradiometer for spatial color distribution and non-uniformity;
• Supports multiple goniophotometer types (full-space mirror, horizontal, box-type, etc.).

Meet the standard requirements

• IESNA LM-79 Electrical and Photometric Measurements of Solid-state Lighting Products
• CIE Pub. NO.70 The Measurement of Absolute Luminous Intensity Distributions
• CIE 239 Goniospectroradiometry of Optical Radiation Sources
• CIE S 025 Test Method for LED Lamps, LED Luminaires and LED Modules
• GB/T 24824 General Lighting LED Module Test Methods
• GB/T 9468 General Requirements for Luminous Intensity Distribution Measurement of Luminaires
• GB/T 36979 Measurement Methods for Spatial Color Distribution of LED Products

Test parameters