Improved semikinematic mountings for prisms

Paul R. Yoder Jr.

doi:10.1117/12.482153

9 September 2002 Improved semi-kinematic mountings for prisms

Paul R. Yoder Jr.

Proceedings Volume 4771, Optomechanical Design and Engineering 2002; (2002) https://doi.org/10.1117/12.482153
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

A prior publication¹ described a mounting technique using springs to preload a penta prism semikinematically against three coplanar flat pads and three locating pins arranged in a triangular pattern on a baseplate. In that design, the geometry of force application in the plane of reflection led to unequal contact stress generation at the locating pins. With preload high enough to withstand shock or vibration, excessive stress can develop at the pin with the greatest preload. In this paper, we describe a simple modification of the mounting design that more nearly equalizes the stresses at all three pins thereby reducing the potential for damage. We then show how this general technique can be applied to achieve the same stress-reducing advantage in mounting several other standard prism types.

Citation Download Citation

Paul R. Yoder Jr. "Improved semi-kinematic mountings for prisms", Proc. SPIE 4771, Optomechanical Design and Engineering 2002, (9 September 2002); https://doi.org/10.1117/12.482153

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