Rotary Reflectance Measurement Syetems

  • Product No:GS-191FA-1045
  • Manufacturer:Gamma Scientific

Gamma Scientific provides a unique, high performance option for reflectance and transmission testing. These systems capture complete spectral and colorimetric properties of thin film coatings with scan times typically less than one second.


Multi-layer film thickness and sample flatness can also be monitored in parallel.

Reflectance and Transmission test systems from Gamma Scientific are available in several configurations. Depending on the sample type and desired measurement result, a variety of system configurations are available for testing either polished (specular) or rough (diffuse) samples. A production selection guide is included in this brochure to help in configuring the best system for your needs.


These systems are ideal for manufacturers who need to obtain fast and accurate measurements of flat panel display glass, anti-reflection coating inspection, photovoltaic (solar cell) coatings, optical filters, lens coatings, paint samples, diffuse plastics and more.


Regardless of the sample, Gamma Scientific offers a solution for your reflectance or transmission measurement needs.


  • Isolated first surface measurement of thin glass substrates >500 μm thick

  • Complete spectral analysis

  • Test coating uniformity and colorimetric analysis

  • Full cycle testing for R&D or production

 

GS-191FA-1045 Rotary Reflectance Measurement Systems
191 Optical Head10 Degree Optics45 Degree Optics
Measurement TypeFirst Surface Specular ReflectionFirst Surface Specular Reflection
Sample TypesGlassGlass
Illumination Angle10°45°
Viewing Angle10°45°
Minimum Sample Thickness
(First Surface Reflectance Only)
0.5mm (transparent samples)0.25mm (transparent samples)
Maximum Sample Thickness6mm6mm
Sample SizeCustomer Defined
One Machine Can Support
Three Different Panel Sizes
Customer Defined
One Machine Can Support
Three Different Panel Sizes
Spectral Range360nm-830nm360nm-830nm
Illumination Spot Size
(Area of Analysis)
1mm x 10µm1mm x 10µm
Measurement Speed
(Sample Dependent)
<1500ms<1500ms
Calibration Reference StandardBuilt in BK-7 Polished GlassBuilt in BK-7 Polished Glass
Rotary System Specifications
191 Optical Head191F-1045 Dual Angle Optics
Measurement Locations Per PanelThree measurement locations standard
Configurable up to five locations
Configurable for 10 and 45 degree
measurement at any location
Glass StationsEight glass stations
Three for loading/unloading
and five for measurement optics
Cycle Time<6 seconds per panel,
3 seconds maximum for loading and unloading
(cycle time increases if load/unload exceeds 3 seconds)
System DimensionsHeight: 1.75m
Width: 1.6m
Depth: 1.6m
Weight: approx. 1000kg
Measurement Accuracy
Spectral Reflectance± 0.5%± 0.5%
Tristimulus
(CIE 1931 X, Y, Z)
± 0.05± 0.10
Chromaticity
(CIE 1931 x,y)
± 0.005± 0.005
LAB Color
(CIE 1976 L*, a*, b*)
L* ± 2.0 a*, b* ± 0.8L* ± 2.0 a*, b* ± 0.8
Average Reflectance± 0.2± 0.2
Reported Parameters
Spectral DataReflectance as a function of wavelength
Colorimetric DataCIE Tristimulus X, Y, Z, with 2° or 10° View Angle, (L*, a*, b*), (x, y), (u’, v’), and other parameters