According to the requirement of CIE, IESNA and national standards. We have achieved Type C measurement method through rotating photometer head. It is used to test the spatial light intensity distribution as well as various luminosity parameter for small indoor size luminaire.

Test report

>The detector rotates around the horizontal axis of tested luminaire.

>Rotation range: ±180 ° (or 0 °to 360 °)

>The tested luminaire remains static. It can achieve  C-γ or  B-β coordinate 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 standard requirements.Test result can be output with IES,IDT,CEN,CIB,CSV.TM4,CIE 

   files and directly used by design software likeDialux.

Type C measurement

Position of the tested luminaire fixed

Less space occupation

No mirror

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”

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”

...

Used for measuring downlight, bulb lamp, spotlight, par lamp, etc