visible & infrared interferometers & accessories
thermal imaging & thermography
non-contact 3D and thickness measurement
systems for distance & thickness measurement
optical test instruments
standard test charts & custom designed reticles
optical components & optomechanical assemblies
high precision motion & control systems
high speed, multichannel, self-calibrating streak cameras
microlens arrays & micro-optical components & structures
High power laser beam delivery systems
Pre-owned optical test equipment for sale
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Operation ImageMaster® VISION
ImageMaster® VISION evaluates the imaging quality of ophthalmic glasses in
terms of Modulation Transfer Function (MTF). In addition to MTF further measurement
capabilities of the ImageMaster® VISION are:
Dioptric power
Through focus MTF
Line spread function
Phase transfer function
Astigmatism
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ImageMaster® VISION features a very flexible design which allows 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
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© 2006 Armstrong Optical Ltd
| tel: +44 (0) 1604 654220
| e: info@armstrongoptical.co.uk
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