Due to the hi-leveled double beam system being adopted, the measurement with high accuracy and improved repeatability can be performed easily.
Total spectral properties can change not only combination of photopic vision standard luminous efficiency V(λ) and CIE standard illuminant D65 but standard illuminant A.
Full automatic instrument for the processing and control by using a personal computer, allows always stable measurement data for all sorts of calculations, average calculation or printer out-put.

PC Control

Structure
	1 Light Source Lamp 2 Two Branch Fiber 3 Reference Shutter 4 Measurement Sutter 5 D6 5 Convertible Switch to D65 & A Illuminant 6 Lens 7 Entrance Port Aperture 8 Exit Port Aperture 9 White Plate 10 Detector 11 Reference Fiber 12 Integrating Sphere 13 Light Trap Box 14 Sample