Beam Collimators
Optical Surfaces Ltd.Request Info
Beam collimators for modulation transfer function (MTF) optical testing have been announced by Optical Surfaces Ltd.
MTF is a trusted technique for objectively evaluating the image-forming capability of optical systems. Reflective beam collimators are mirror assemblies that take divergent or convergent incoming light rays and produce parallel light output. They can be used to replicate a target at infinity without parallax. As a consequence, reflective beam collimators are the device of choice for performing polychromatic MTF measurements over extended wavelength ranges.
The high stability and performance of Optical Surfaces’ reflective beam collimators is achieved using a zero expansion off-axis parabolic mirror, manufactured to better than λ/10 p-v surface accuracy. The optics within the beam collimator are secured by the use of stress-free mounts and come pre-aligned for optimum performance. The off-axis design produces no central obscuration, thereby ensuring highly efficient transmission. The all-reflecting design is achromatic and can operate from the UV to the IR without adjustment with aluminium/magnesium fluoride coatings.
https://www.optisurf.com
/Buyers_Guide/Optical_Surfaces_Ltd/c10918
Published: November 2018
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