Holographic Testing Of Stretchable Concave Imaging Mirrors

W. King; P. Waddell; T. Raptodimos

doi:10.1117/12.952357

16 July 1986 Holographic Testing Of Stretchable Concave Imaging Mirrors

W. King, P. Waddell, T. Raptodimos

Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952357
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

A circular, concave, imaging mirror of variable focus is described. The mirror is a very thin plastic membrane with a highly reflective metallised front surface. Mirror curvature is determined by the strength of a vacuum applied to the rear face of the film, increasing the vacuum will increase the curvature. High resolution reflected and focussed images have been observed from targets, using both white light and infra-red. Mirror curvatures from f/10 to f/0.4 have been examined, high resolution images were obtained at all curvatures. Such a wide range covers large f number astronomical telescopes, to the 'fast' small f number concave mirrors used in infra-red imaging. The contents of this paper will describe the application of holographic testing to such devices. The tests were undertaken in order to examine the symmetry of the mirror surface and to study the vibratory response of that surface.

Citation Download Citation

W. King, P. Waddell, and T. Raptodimos "Holographic Testing Of Stretchable Concave Imaging Mirrors", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952357

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available