Links

Practical Optics in Action   - Details
College of Optical Sciences, University of Arizona

Workshop's Techniques For The ATM   - Details
Tile-On-Plaster Tools The "Dykem Test" Fast Grinding and Polishing Making A Pitch Lap Testing Quality Of Polish The Matching Ronchi Test Understanding The Foucault Test The Dall Null Test Setting Up The Dall Null Test

Understanding Foucault A Primer for Beginners   - Details
Understanding FoucaultA Primer for For those of you contemplating making your own mirror, David Harbour offers a new, easy to understand explanation of the most capable testing method for monitoring the developing figure on your mirror - the Foucault Test. Included are new concept illustrations that are sure to help you thoroughly and quickly master the basis of the Foucault test.

MTF Measurement Using Narrow Slit Target and CCD Array   - Details
The modulation transfer function (MTF) is a quantitative image quality metric for imaging systems that takes into account aberrations, diffraction effects and any other process that reduces contrast. It provides a basis for comparison between quality of imaging systems or lenses of similar configurations. This test plan demonstrates a fast means of measuring the MTF of a simple imaging system (a lens singlet) with readily available equipment.

Modulation Transfer Function - what is it and why does it matter?   - Details
Modulation Transfer Function or "MTF" is the most widely used scientific method of describing lens performance. What is it exactly, how is it defined, and how is it measured? The modulation transfer function is, as the name suggests, a measure of the transfer of modulation (or contrast) from the subject to the image. In other words, it measures how faithfully the lens reproduces (or transfers) detail from the object to the image produced by the lens.

Optical Specifications, Fabrication, and Testing   - Details
OPTI 415/515 Optical Specifications, Fabrication, and Testing

MTF - Modulation transfer function   - Details
Modulation transfer function (MTF) is commonly used to describe the outcome of the interaction of two or more PSF. More specifically, the combined intensity distribution resulting from point-image patterns close enough to affect each other. The MTF is a part of a complex function describing this phenomenon, called Optical transfer function, or OTF.

Review of Basic Principles in Optics, Wavefront and Wavefront Error   - Details
Austin Roorda, Ph.D. University of California, Berkeley

Image Quality Figures of Merit for Optical Systems   - Details
What does the optical system do? The figure of merit provides a number that tells how well the system functions

Zernike Term Chart   - Details
Wavefront Sciences