Thermally compensating lens mount

Details Thermally compensating lens mount Thermally compensating lens mount

1995-03-31

1996-10-29

Ben, Loha

Optical: systems and elements

Lens

With support

359819, G02B 702

Patent

active

055702384

ABSTRACT:
A thermally compensating lens mount (40) comprises an axially symmetric housing (42) that is formed from an inner layer of a first material (44) having a low coefficient of thermal expansion (CTE) to an outer layer of a second material (46) having a high CTE. The longitudinal cross-section of the housing (42) has a barrel shaped geometry along the symmetry axis (47) so that differential thermal expansion of the first and second materials (44, 46) decreases the length of the housing (42) along its axis of symmetry (47) by an amount determined by the CTEs of the inner and outer layers (44, 46), their thicknesses, and the geometry of the barrel shape.

REFERENCES:
patent: 4236790 (1980-12-01), Smith
patent: 5210650 (1993-05-01), O'Brien et al.
patent: 5283695 (1994-02-01), Ziph-Schatzberg et al.
patent: 5313333 (1994-05-01), O'Brien et al.

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