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Mounting for Corner Cube Prisms

IP.com Disclosure Number: IPCOM000080485D
Original Publication Date: 1973-Dec-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Harrison, RW: AUTHOR

Abstract

Mounting corner cube prisms in optical systems is often difficult, due to the delicacy of roof and face surfaces of the prism. The problem is sometimes compounded by fragile coatings and knife-sharp roof edges, in company with the need to hold the prism at microinch stability in its axial direction.

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Mounting for Corner Cube Prisms

Mounting corner cube prisms in optical systems is often difficult, due to the delicacy of roof and face surfaces of the prism. The problem is sometimes compounded by fragile coatings and knife-sharp roof edges, in company with the need to hold the prism at microinch stability in its axial direction.

Described is a mounting method solving these problems. The prism 1 is fitted in a cell 2 against a front flange having good internal flatness. Behind the prism is then poured a cushion of silicon rubber 5 to a level covering the prism apex. After curing, the rubber is preloaded by the lid 4 through a washer 3 to a pressure sufficient to overcome any expected dynamic forces on the prism, hence, to hold it in place. This lid may be tightened via the indicated spanner wrench holes. During the pouring step, a thin seal of grease between the prism and flange may be desirable.

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