Passive focus device

Details Passive focus device Passive focus device

2005-07-19

2005-07-19

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With support

C359S820000, C359S824000, C356S072000, C348S745000

Reexamination Certificate

active

06919999

ABSTRACT:
A passive focus device including a support rod, an optical assembly translatably mounted on the support rod, and a sealed drive assembly containing a substance that physically changes in response to a temperature change, wherein the drive assembly is configured to move the optical assembly along the support rod based on a physical change of the substance.

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