WaveMaster® UST - Universal Stepper Tester
Fully automated wavefront measurement of bi-telecentric lenses
The WaveMaster® UST is a universal stepper optic tester (UST) and combines precise Shack-Hartmann wavefront measurement technology with expertise and experience in the manufacturing of complex measurement systems. The result is a wavefront measurement system which automatically measures the entire field of bi-telecentric lenses at multiple wavelengths. Field sizes greater than 70 x45 mm² can be measured.
Wavefront sensor with illumination automatically measures the entire field of bi-telecentric lenses
Key Features:
- Full field characterization of the wavefront in large, bi-telecentric lenses (up to 300 kg in weight)
- Maximum field size (object side): 70 x45 mm²
- Maximum field size (image side): 100x 100 mm²
- High degree of automation:
- Measuring head: WaveSensor 150 with imaging optics optimized for the application
- Autocollimator for alignment of sample tilt
- Stable measurement system thanks to construction on a granite base, which provides extraordinary rigidity and thermal stability
- Vibration-insulated by active air dampers
Applications
Wavefront measurement of bi-telecentric lenses at various wavelengths
Basic Functions:
- Real-time measurement and analysis of wavefront
- Display of
- 2D- of 3D-wavefront, -fringes and -phase
- PV and RMS
- Intensity
- Local slopes
- Camera image
- Absolute and relative measurement mode
- Real-time comparison with master lens or design data
- Wavefront and camera image averaging
- Adjustable masking of measurement and analysis area
- Storable configuration files
- Certificates
Field measurement module:
- User selectable Pass/Fail criteria
- Field configuration via illumination reticle design
- Automatic measurement of all field positions incl.
- Focusing via wavefront defocus
- Lateral fine positioning via wavefront tilt, wavefront coma or image centration
- Wavelength change and intensity adjustment
- Pass/Fail matrix
- Export of complete single field point measurement results
ZERNIKE analysis module
- Real time Zernike fit and analysis of wavefront data
- Numerical and graphical display of fit results
- Import of theoretical wavefront data from ZEMAX and CODE V for real time comparison
- Export of wavefront data and analysis results to ASCII and ZEMAX format
- Display of Zernike coefficient trend
MTF/PSF analysis module
- Real time calculation and display 3D MTF and PSF data
- Table with MTF measurement results Specifications WaveMaster UST
- Export function of measurement results
- Calculation of Strehl ratio
WaveMaster® UST Technical Data
| Sample type | bi-telecentric lenses |
| Maximum sample dimensions (H x W x D) | 1100 mm x 650 mm x 1200 mm |
| Sample receptacle | Interface for customer-specific sample holder |
| Maximum sample weight | 450 kg |
| Maximum distance between object and image plane: | 1200 mm |
| Maximum field dimensions image side: | 100 mm x 100 mm |
| Maximum field dimensions object side: | 70 x 45 mm² |
| Wavefront sensor | WaveSensor 150 with application-optimized (other upon request) |
| Alignment tool (autocollimator with software) | ACM 200-38 |
| Lightning | Hg arc lamp with interference filter |
