Variable focal length mirror assembly including a flexible membr

Details Variable focal length mirror assembly including a flexible membr Variable focal length mirror assembly including a flexible membr

1990-12-27

1992-04-28

Henry, Jon W.

Optical: systems and elements

Mirror

Including specified control or retention of the shape of a...

G02B 7188

Patent

active

051093006

ABSTRACT:
A variable focal length mirror assembly incorporates a rigid circular structure (18) defining a hollow chamber (21) with a circular aperture (19). A flexible elastomer (12,13) having a reflective coating (11) is disposed across aperture (19) with coating (11) outwardly facing. The elastomer (12,13) is peripherally gripped and clamped by a circularly-extending clamp means (15,16) located radially outwardly of the structure (18). The clamp means (15,16) are mounted for movement axially of the structure (18) in order to render flat that portion of the elastomer (12,13) covering the aperture (19) in the absence of any applied elastomer deformation force. Means (20) for applying elastomer deformation forces are provided.

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Waddell publication of Apr. 19-22, 1983 entitled "Industrial Applications of Laser Technology", Proceedings of SPIE--The International Society for Optical Engineering.

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