Products > Display evaluation > Color filter(LCD) > RETS series
Products > Film evaluation > Retardation > RETS series
With the increasing demand for mobile devices such as smartphones and tablets, the structure of LCD displays is becoming more and more diverse. RETS series support you evaluate LCD cell and color filter efficiently. Regardless of its type(whether it is reflection or transmission), you can simply understand the characteristics of samples with the RETS series. e.g. filled cell gap, empty cell gap, optical axis, chromaticity, retardation dispersion, etc.
Polarization optical system and array spectrometer
Measures various size of samples(from 1mm optical element to 10th generation large LCD panels)
Complying LCD production requirement for safety measurement and dust prevention
| Sample size | *20mm x 20mm |
| Measurement range(cell gap) | 0.1μm ~ tens of 10μm |
| Measurement reproducibility | ±0.005μm |
| Detector | array spectrometer |
| Wavelength | 400nm ~ 800nm |
| Polarizer unit | polarization optics extinction ratio: 10^-5(Glan-Thompson prism) automatic rotation(angle accuracy: 0.1°) |
| Spot size | φ2, φ5, φ10(mm) |
| Tilt mechanism for optic axis | -20 ~ 45°, -45 ~ 45° other |
*measures various size of samples over 2,000mm x 2,000mm
Filled cell gap
Twist angle
Rubbing angle
Pretilt angle
Empty cell gap
Retardation dispersion
Optical axis
Ellipticity, azimuth angle
Three-dimensional refractive index
Spectrum, chromaticity
LCD Cell
- transmission type(TFT, TN, STN, IPS, VA, OCB, ferroelectric)
- reflection type(TFT, TN, IPS, VA)
Optical Material
- other(retardation / ellipticity / polarization film, LC material)
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