ImageMaster^® VISION

The ImageMaster^® VISION evaluates the imaging quality of ophthalmic glasses in terms of Modulation Transfer Function (MTF). Besides the MTF further measurement capabilities of the ImageMaster^® VISION are:

• Dioptric power
• Through focus MTF
• Line spread function
• Phase transfer function
• Astigmatism

ImageMaster^® VISION features a very flexible design which enables for different measurement settings. The ±40° adjustable arms of ImageMaster^® VISION allow on-axis and offaxis MTF measurement. Object distances between 30 cm and infinity conjugate are generated by a focusable collimator.

The accommodation and the adaption of the human eye can be simulated with the ImageMaster^® VISION: The measuring head is focusable to simulate the accommodation of the eye in the range ±10 dpt and the aperture of the detector is exchangeable to simulate the adaption of the eye.

The user friendly software of the ImageMaster^® VISION offers a variety of measurement and analyzing tools. The software directly compares real MTF values of the eye glass under test with simulated values from a design program.
The comparison of the imaging quality of the manufactured lenses with the design expectations is made easy in this way. The software of ImageMaster^® VISION helps to analyze the measurement results of the eye glasses. The following output graphs are available:

• MTF vs. Spatial Frequency vs. Image Height
• MTF vs. Spatial Frequency
• MTF vs. Defocus