Passive thermal compensation method and apparatus

Details Passive thermal compensation method and apparatus Passive thermal compensation method and apparatus

1995-05-26

1996-09-17

Ben, Loha

Optical: systems and elements

Lens

With support

359819, G02B 702

Patent

active

055574742

ABSTRACT:
Unwanted positional shifts between two objects, such as lenses, are precisely compensated during thermal changes by use of a passive mechanical system. Materials with differing coefficients of thermal expansion and angled interfaces transforms a longitudinal dimensional change into a fine transverse dimensional change to precisely control movement as a function of temperature thereby maintaining, e.g., lens focus. Compensation movement can be to reduce or increase the spacing between objects such as lenses during a thermal change.

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