Elli-Ret (Retardation)
PAGE INFORMATION
DATE 19-09-04 16:57본문
Retardation Measurement System
Retardation Measurement System(Elli-Ret) is the retardation analysis system for High, Low, and Zero retardation films. This system informs the optic axes, Rin & Rth of retardation film and transmission or extinction axes of polarizing film. Ellipso Teengology has a powerful software and hardware for accurate and fast measurement.
◈PERFORMANCE
1.Measurement constants : Retardation(Rin, Rth), (nx,ny,nz), β-angle, optic axes
2.Measurement speed : < 25 sec per point
3.Reproducibility :< 0.005 nm(Rin)
4.Spot size : 4 mm
◈RETARDATION SYSTEM
1.Light source :Halogen lamp,
Collimating system
SMA type optical fiber couple
2.Wavelength : 550 nm
3.Polarizer module : Single crystal polarizer on a high precision rotation mount
4.Retarder module : High precision rotation mount
Motorized linear stage and control system
Achromatic polymer quarter-wave plate
5.Analyzer module : Single crystal polarizer on a high precision rotation mount
Hole type optical encoder
6.Sample mount : Motorized rotation stage
Vertical and horizontal, independent rotation
2 axis motorized stage controller
Sample mount holder
◈APPLICATION
1.Polarizer/LCD retardation film
2.Optic axes(Transmission, Slow, Fast)
3.Birefringence (Uniaxial, Biaxial), Retardation
4.Rubbing(or Photo aligning) direction & Degree of rubbing(or photo alignment)
◈OPTION
1.Spectroscopic system : Spectral range 400 nm ~ 800 nm
2.Near zero Retardation system : Ultra small anisotropy of photo-aligned PI (Δnd~0.005 nm)
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