Optical: systems and elements – Lens – With support
Patent
1991-03-20
1992-12-15
Ben, Loha
Optical: systems and elements
Lens
With support
359845, 359859, 359872, 248562, G02B 702
Patent
active
051722771
ABSTRACT:
An optical mirror is kinematically mounted at its sides on one fixed point and two movable points which points are supported by a frame spaced from the mirror. One of the movable points is a ball on a cantilevered arm which rests in a cone or groove in the mirror, the other movable point is a mechanical flexure prelaod mounting or a pneumatic preload mounting, which mountings serve to apply constant preload to such mirror. The mirror is made of ceramic material, of low thermal expansion or contraction and has water cooling passages therein. The frame is made of metal of higher thermal expansion or contraction. However such mirors, when reflecting a high intensity laser beam can thermally expand relative to the frame and must do so with minimal deformation from the desired optical contour thereof which result is accomplished by the resilient and constant preload mountings of the present invention. The preload mounting of the invention also serves to compensate for temperature differentials between the cooled ceramic mirror and its uncooled metal frame.
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Farah Jorge I.
Wahl Roger L.
Ben Loha
Collier Stanton E.
Singer Donald J.
The United States of America as represented by the Secretary of
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