Can the PSM Find Best Focus of an F/25 Optical System?

Can the PSM find best focus of an f/25 optical system to less than ± 10 μm?

SOMEWHAT SURPRISINGLY, YES, TO ABOUT ± 2 ΜM.

You scan axially through best focus several times and plot the number of pixels above threshold versus scan distance.

The curve is quadratic and the derivative of the curve fit to the data gives the best focus position to even very slow systems.

The Axicon centering station and the associated LCS-PSM software make this an easy task.

Worldwide Representatives

UK & EU

Armstrong Optical
+44(0) 1604 654220
info@armstrongoptical.co.uk

All Asian Countries

清 原 耕 輔   Kosuke Kiyohara
清原光学 営業部   Kiyohara Optics / Sales
+81-3-5918-8501
opg-sales@koptic.co.jp

Kiyohara Optics Inc.
3-28-10 Funado Itabashi-Ku Tokyo, Japan 174-0041

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Mersenne Optical Consulting
aprakich@gmail.com

Optical Perspectives Group, LLC

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