Products > Light measurement > In-line colorimeter > 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.
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)
| Type | A | B | C | D |
| Spectrum range(nm) | 380 ~ 960 | 300 ~ 800 | 330 ~ 1,100 | 350 ~ 930 |
| *Wavelength accuracy(nm) | ± 0.3 | ± 0.3 | ± 0.5 | ± 0.3 |
| Method | spectral method | |||
| Spectrometer | F=3, f=135mm | |||
| Grating | brazed holographic type | |||
| Detector | electro-cooling CCD image sensor | |||
| **Optical fiber | length: about 2m, diameter: about 12mm | |||
| Consumption electricity | max. 100VA | |||
| Size and weight | 280(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 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.
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