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US 5,856,886 AGranted
Microscope objective lens
AssigneeNikon Corporation
InventorHitoshi Kaizu
Life of this patent
Estimating the term…
Abstract
A microscope objective lens has a modulator. The modulator can be rotated with respect to the objective lens to compensate for a change in orientation of the objective lens. This is achieved by providing various means on the objective lens for transmitting torque to the modulator, thereby rotating it.
Claims3
An objective lens comprising:
- a lens element retaining tube retaining multiple lens elements of the objective lens;
- a modulator located at a pupil position of the objective lens;
- a retaining member retaining the modulator and being rotatable in the lens element retaining tube;
- a rotating ring around an outer surface of the lens element retaining tube, the rotating ring being rotatable with respect to the lens element retaining tube;
- and
- a transfer mechanism for transferring torque from the rotating ring to the retaining member, whereby rotation of the rotating ring causes the modulator to rotate at the pupil position.
3 more elements
Dependencies are inferred from the claim text.