Optical Test Bench OTS200/500
The OEG company has developed a complete range of test benches for measuring optical parameters include:
- The effective focal length (EFL) (positive / negative) or dioptric power
- Back Focal Length - BFL)
- The radius of curvature (concave / convex)
- The MTF on the axis (sagittal / tangential)
The range of optical test benches proposed by OEG:
OTS 200 |
OTS 500 |
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A system of image processing ensures high-precision data acquisition and provides the results of measurements and precise objectives.
A controller stepper motor 3 axis with the possibility to make micro step allows to position measurement system to ensure a strict and precise focus on the image plane.
Benches OTS are characterized by a range of very large extent with regard to the focal length (EFL) and frontal (BFL). They are simple to use and the software is adapted to current needs of the optical industry.
Results can be saved in ASCII file or protocols freely configurable. Benches OTS measures are particularly suitable for measurements in series with their ease of use.
The position of the image plane for a given sample type may be recorded and found with the motorized positioning system. The autofocus function determines the precise position of the image plane and the software calculates itself the values measured according to what has been defined. Therefore, the performance does not depend on the operator.
With its automatic positioning, this system is particularly recommended for measurements in series where high speed is necessary.
The OTS benches also allow to characterize optical components plans. By adding a software module, strip characterization to non-parallel sides and measures of angles of deflection can be achieved.
Specifications OTS 200/500
Parameter |
OTS 200 |
OTS 500 |
Measurement of focal length |
Range focal length (EFL) |
+/-500mm |
+/-1200mm |
Repeatability EFL |
± 0,04...± 0,3% |
± 0,04...± 0,3% |
Accuracy EFL |
± 0,04...± 0,3% |
± 0,04...± 0,3% |
Measurement of frontal |
Front Range (BFL) |
+/-500mm |
-1200...+1000mm |
Repeatability BFL |
± 0,04...± 0,3%
|
± 0,04...± 0,3% |
Accuracy BFL |
± 0,04...± 0,3% |
± 0,04...± 0,3% |
Measure radius of curvature |
Range of radius of curvature |
+/- 500mm |
-1200...+1000mm |
Repeatability radius of curvature |
± 0,03...± 0,3%
|
± 0,03...± 0,3% |
Accuracy radius of curvature |
± 0,03...± 0,3% |
± 0,03...± 0,3% |
Measuring MTF |
Measuring principle FTM |
Analysis of the image of a slit on the axis (saggitale / tangential) |
Repeatability EFL |
3% |
3% |
Accuracy EFL |
3% |
3% |
Other features |
CCD Camera |
High resolution CCD camera 440,000 pixels |
Max Aperture |
25mm |
65mm |
Controllers Stepper Motor |
3 axes, micropas (
40,000 steps per revolution
) |
Focal length collimator |
140mm |
500mm |
Focal Length autocollimator |
200 |
Autofocus |
Oui |
Automatic measurement procedure |
Oui |
Maximum diameter sample |
48mm |
200mm |
Sample holder |
Self-centering device |
Measurement procedure manual |
yes |
Operating System |
Windows 2000/XP |
Software |
32-bit Windows-based for data acquisition, measurement and control of stepper motors |
PC |
Pentium IV, 256MB RAM, 32MB VGA |
Acquisition |
PCI, 440000pixel, 256 niveau de gris |
Documentation en ligne :
 Download the OTS brochure
Link to the website of the company OEG
If you would like more information, please contact us .
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