Objective lens reference system and method

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems

Reexamination Certificate

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C250S201400, C359S383000

Reexamination Certificate

active

07075046

ABSTRACT:
A system and method for referencing an objective lens to a desired plane of focus. In one embodiment, a dichroic element is utilized to reflect energy of one or more wavelengths that has passed through an objective lens to a detector for determining a position of the objective lens to a desired plane of focus. The objective lens may be manually and/or automatically focused to the desired plane of focus.

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