GPM-1600(L) goniophotometer is composed of host, controller and detector, to realize measurement of light intensity in all directions, color spatial uniformity, average color features and spatial color nonuniformity of light source and lamps.It can meet CIE standard of B-β and C-γ measurement. Tested parameters are the same as GPM-1800B. 

                                                                                                 B-β measurement                                                         C-γ measurement

 This system includes: spatial light intensity distribution, light intensity distribution curves on any cross section (can be shown under the rectangular coordinate system or polar coordinate system), spatial iso-intensity curve, plane equi-luminous curve, brightness limit curve, annulus luminous flux, glare rating, lamps and lanterns efficiency, effective shining angle, overshot luminous flux, undershot luminous flux, lamps and lanterns total flux, effective luminous flux, utilization coefficient and it can realize measurement of electric performance parameters such as voltage, current, power and power factor simultaneously through INVENTFINE digital electric parameter measure instrument, and can also generate the completed report of lamps and lanterns’ photoelectric performance parameters.

Test report

File output format 

*.CIE CIE

*.IES IESNA 

*.IDT EULUMDAT

*.CIB CIEBSE

*.TM4 CIEBSE

*.CEN DIN

*.CSV EXCEL

......

Characteristic

Rotations of test samples around both vertical and horizontal axis,and rotation range:±180°(or  0～360°).Single arm for C-γ measurement. Double arms for B-β measurement.

Using high level redirector made up by special metal fiber,no winding,intelligent startup and stop,keep stable rotating, continuous testing  and low noise.

The accuracy of angle :0.1°,resolution of angle :0.01°.

The accuracy of  photometric:standard class.

The tested data meets the international and national standard requirements.Test result can be output with IES,IDT,CEN,CIB, CSV.TM4,CIE files and directly used by design software like Dialux.

Characteristics

○ Tested luminaire rotates around  both vertical and horizontal axis and rotation range is:±180°(or  0～360°).

○ Single arm for C-γ measurement. Double arms for B-β measurement.

 ○ Using high level redirector made up by special metal fiber, no winding, intelligent startup and stop , keep stable

    rotating,continuous testing  and low noise.

○ The accuracy of angle :0.2° , resolution of angle :0.01°.

○ The accuracy of  photometric:standard class.

○ The tested data meets the international and national standardrequirements.Test result can be output with IES,IDT,

   CEN,CIB,CSV.TM4,CIE files and directly used by design software likeDialux.

Measuring plane

working principle

CIE Pub. NO.70,“The Measurement of Absolute Luminous Intensity Distributions”

CIE DIV.Ⅱ-TC10,“Photometry of lamps and lanterns ”

IES LM-35-1989,“IES Approved Method for Photometric Testing of Floodlights”

IES LM-31-1995,“IES Approved Method for Photometric Testing of Roadway lamps and lanterns ”

IES-1971(73-96),“IES Practical Guide to Photometry”

GB/T 7002-1986,“photometric test of flood lamps and lanterns”

GB/T 9467-1988,“photometric test of indoor lighting lamps and lanterns”

GB/T 9468-1988,“photometric test of lamps and lanterns for street lighting”

IES 61341 “Method of Measurement of Center Beam Intensity and Beam Angle(s) of Reflector Lamp”

CIE Pub.NO.76,“Photometry-the CIE System of Physical Photometry”

IES LM-79-08 SSL Measurement of Electric and Luminosity

GB/T 24824-2009 Ordinary Lighting Use LED Block Measurement Method

...

It can be used to measure the spatial intensity distribution and kinds of photometric parameters of indoor lighting，cast lighting and street lighting lamps and lanterns.