Precision cylinder optics for higher requirements

Dieter Bergner; Oliver Falkenstorfer; Dirk Malina; Janett Roder; Roland Schreiner

doi:10.1117/12.606086

2 May 2005 Precision cylinder optics for higher requirements; Techical Digest

Dieter Bergner, Oliver Falkenstorfer, Dirk Malina, Janett Roder, Roland Schreiner

Proceedings Volume 10315, Optifab 2005: Technical Digest; 1031507 (2005) https://doi.org/10.1117/12.606086
Event: Optifab 2005, 2005, Rochester, NY, United States

Abstract

JENOPTIK Laser, Optik, Systeme GmbH (JO L.O.S.) enlarged its product range in the field of cylinder lenses and crystal optics. These components are used in optical measuring technology and in various laser applications. The new cylinder components are a result of the state of the art manufacturing technology. For applications, where the quality of standard cylinders with a surface deviation of PV~Lambda/2 to ~Lambda/5 @632,8nm and tested with a reference glass only is not sufficient, the surface shape can be improved to PV Lambda/10 @632,8nm. The presentation deals with Jenoptik's current state to produce cylinder optics, to reduce remaining surface shape deviations of semi-finished cylinder optics and to test these elements. Based on in-house developed machinery, cylinders are manufactured by means of blocking or drum. The required surface quality in the range of PV~Lambda/10 @632,8nm for cylindrical lenses can be reached by computer aided correction using mrf-polishing techniques in connection with an interferometer test set-up. Therefore, the polishing machine is equipped with an additional axis of movement. The interferometer measurement of the residual surface deviation is done by Computer Generated Holograms (CGH), which are designed and manufactured in-house. CGHs from JO L.O.S. for testing cylindrical lenses can be custom designed starting with F#1.0. They are related to the typical rectangular geometry of cylinder components. Using these measurement techniques, testing is no longer the limiting factor in achieving high quality cylindrical surfaces. JO L.O.S. has all the capabilities of effective manufacturing, testing and correcting cylindrical lenses. Latest results achieved in series production are shown.

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Dieter Bergner, Oliver Falkenstorfer, Dirk Malina, Janett Roder, and Roland Schreiner "Precision cylinder optics for higher requirements; Techical Digest", Proc. SPIE 10315, Optifab 2005: Technical Digest, 1031507 (2 May 2005); https://doi.org/10.1117/12.606086

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KEYWORDS

Optics manufacturing

Computer generated holography

Cylindrical lenses

Manufacturing

Precision optics

Interferometers

Surface finishing

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