Thermal compensator assembly

Details Thermal compensator assembly Thermal compensator assembly

1978-11-13

1980-02-26

Evans, F. L.

G02B 702

Patent

active

041903250

ABSTRACT:
A thermal compensator assembly employed in an optical system to adjust the relative location of lens elements and maintain a preset focus as the ambient temperature changes. The assembly includes a plurality of high linear coefficient of expansion push rods interconnected with levers having relatively low linear coefficients of expansion. The assembly changes in length in direct response to ambient temperature changes. A second lens barrel carrying the objective lens is bias mounted for floating movement with respect to the first lens barrel so as to abut the assembly. The compensator assembly is exemplified as being pin mounted on a first relatively fixed lens barrel. The assembly expands and contracts as a function of ambient temperature to effect movement of the floating lens barrel.

REFERENCES:
patent: 3612664 (1971-10-01), Berman
patent: 4116537 (1978-09-01), Dilworth

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