High speed LED spectrometer

High speed LED spectrometer

Products > Light measurement > In-line colorimeter > LE series

LE series

LE series is an inline evaluation system that measures the optical characteristics of LEDs in synchronization with control signals on the production line. With half the measurement time and a flexible and versatile measuring system, it can be customized for any light source-related production plant. LE-5400 provides optical characteristics data that is required for quality control such as OK/NG judgment and LED binning.

 Features  
  • Synchronized with control signal in production line

  • Flexible and various measurement systems with optical fiber

  • High speed test – short exposure time(min. 2msec. / LE-5400)

  • High speed measuring cycle – test / calculation / evaluation(half a time compared with previous model)

 Specifications 
TypeABCD
Spectrum range(nm)380 ~ 960300 ~ 800330 ~ 1,100350 ~ 930
*Wavelength accuracy(nm)± 0.3
± 0.3
± 0.5
± 0.3
Methodspectral method
SpectrometerF=3, f=135mm
Gratingbrazed holographic type
Detectorelectro-cooling CCD image sensor
**Optical fiberlength: about 2m, diameter: about 12mm
Consumption electricitymax. 100VA
Size and weight280(W) x 296(D) x 160(H)mm, approx. 10kg

*confirmed on the emission line of wavelength calibration light source, complying with JIS Z 8724

**shapes and lengths can be adjustable

 Measurement  

Measurement items

  • *Tristimulus value 〔JIS Z 8724〕

  • Chromaticity(u, v) 〔CIE 1960UCS〕

  • Chromaticity(x, y) 〔JIS Z 8724〕

  • Chromaticity(u', v') 〔CIE 1976UCS〕

  • Dominant wavelength and Excitation purity 〔JIS Z 8701〕

  • Correlated color temperature and Duv 〔JIS Z 8725〕

  • Color rendering index(Ra, R1 ~ R15) 〔JIS Z 8726〕

  • Wavelength, height and half band width of the peak 

  • Wavelength, height of the second peak 

  • Integrated value 

  • Center-of-gravity wavelength 

  • Height of designated wavelength 

  • Integrated value of shorter/longer wavelength of the peak

    *brightness (kY) can be vary depends on the detector and optical system of measuring LED.
    It is valid only when reproducibility of alignment(distance, position and direction) is confirmed.