104-0150  FRINGE ANALYSIS SYSTEM 

                                                                                                                                                                                                                                             

AVAILABLE FOR ALL OF THE FOLLOWING DAVIDSON OPTRONICS INTERFEROMETER MODELS:

D-303, D-305, D-308, D-309, D-311, D-312 & D-327

                                                                                                                                                                                                 

 

 

                                                                                                                                                                                              

 

FEATURES: 

• Digitizes fringes in any orientation
• User selectable area for data taking
• User definable obscuration selection
• Automatic fronge ordering
• Noisy fringes can be smoothed
• User friendly software

  

FRINGE ANALYSIS SYSTEM INCLUDES: 

• Notebook computer
• Fringe analysis software with manual
• High resoution CCD camera with relay lens
• Video frame grabber interface
• Cables and mounting brackets
• Printer
     

  

FRINGE ANALYSIS SOFTWARE FEATURES:

  

• Integrated frame grabber card to directly acquire interferogram images from video camera
• Auto tracing and ordering of the fringe pattern
• Manual fringe trace editing features
• Manual fringe editing
• Rapid data analysis
• Subtract aberrations
• Interferogram averaging for more accurate results
• A variety of graphical plots (3D and contour plots)
• Numerical output of optical aberrations (tilt, defocus, spherical, astigmatism, coma)
  P-V, RMS, and Strehl ratio
• Full color test report printing on inkjet printer
• Multiple image file formats (BMP, JPG, TIFF, etc.) input and output
• Flexible apertures (circular, elliptical and polygon user selectable area for data taking and obscuration selection)
• Easy to use graphical user interface

Cursor driven pull-down menus allow fast and convenient access to available functions.  Interferograms can be loaded from the drive as an image file or from the video camera interface.  After data evaluation, Zernicke coefficients and other optical parameters may be displayed, saved or printed.

  

On-screen and printed reports show:

 

• RMS
• P-V
• Tilt
• Angle Tilt
• Defocus
• Astigmatism
• Coma
• Spherical Aberration Defocus
• Spherical Aberration
• Astigmatism (with angle)
• Coma (with angle)
• Strehl Ratio
• Scale used
• Number of points used

Points for fringe analysis can be added or removed manually.

  

View function offers:

 

• Interferogram
• Intensity Plot
• Color Contour
• 3D plot can be rotated from 0° to 360°
• Line Profile
• Fringe Centers

 

 

Circular, square, polygonal (any number of points) or elliptical shapes may be selected for region of interest apertures and obscurations.

 

Tilt, Defocus, Astigmatism, Coma, and Spherical Aberration may be excluded from the calculated wavefront aberration.

 

 Aberration analysis can be limited by Zernicke polynomial order (2^nd, 4^th, 6^th, 8^th)

 

Convenient Edit User Data function allows

• Optical Description
• Date Tested
• Operator
• Comments to be included in the Printed Report.

Synthetic Fringes (calculated back from the Wavefront Aberration)

 

Support Documentation
104-0150 Data Sheet