Medical	Medical
Analytical	Zeta Potential Particle Size Molecular Weight Capillary Electrophoresis Spherulite diam./Corr. Length
Spectrometry	Spectrometer Thickness Measurement Light Measurement FPD Evaluation Material Evaluation In-Process Evaluation

Goniophotometric Measurement System GP series

To measure the angular distribution of luminous intensity to evaluate the goniophotometric characteristics

Product

Features

Goniophotometric measurement for LED luminaries up to 2400mm.
Spectral distribution at each angle by controlling two-axis goniophotometer automatically to obtain total luminous flux with zonal spherical function.
Goniophotometric measurement for large displays.
Wide dynamic range with brand-new detector.
Complying with IESNA LM-75 and CIE121
Usable for both Type B and Type C.
Goniophotometric measurement at both UV and NIR region (Spectral radiant flux calculation available)

Measurement Item

Model	GP-500	GP-1100	GP-2000
Optics	Two-axis goniometer
	TypeC	TypeC	TypeB/C
Optical path length	< 500mm	500～1500mm	1500～12000mm
Measurable sample	LED chip	General lightning Module	General lightning (Incl. fluorescent tube)
Detector	Array spectrometer
Wavelength	360nm～830nm ^*2
Measure Item	・Angular distribution (Light distribution) ・Spectral radiant flux (Spectrum) ・Chromaticity (u,v) 〔CIE 1960UCS〕・Spectral radiant intensity (Spectrum) ・Chromaticity (u’,v’) 〔CIE 1976UCS〕・Chromaticity (x,y) 〔JIS Z 8724〕・Dominant wavelength and Excitation purity 〔JIS Z 8701:1999〕・Correlated color temperature and Duv 〔JIS Z 8725〕・Color rendering index （Ra, R1～R15）〔JIS Z 8726〕

*1　Corresponding with LM-75 for IESNA　*2　Wavelength for detecter can be adjustable

Types of coordinate system in light distribution measurement (JIS C 8105-5)

Coordinate system	Angle of inclination against polar axis (Vertical angle)		Angle of inclination where the polar axis is made a rotating center. (Horizontal angle)		IESNA LM-75
	Mark	Range	Mark	Range
αβ	α	-90° ≦ α ≦ 90°	β	-180° ≦ β ＜ 180°	Type B
θφ	θ	0° ≦ θ ≦ 180°	θ	0° ≦ φ ＜ 360°	Type C

GP-2000