Microscope fine focus control mechanism
First Claim
1. In an optical instrument having a support and an adjusting system supported thereby, said system having at least one shaft and mechanism cooperatively engaged thereto for providing relative movement between the instrument'"'"'s optics and an object being examined, a fine focusing control mechanism comprising:
- a rotatable member eccentrically positioned between said at least one shaft and said support for accomplishing fine focusing whereby rotation of said rotatable member displaces said at least one shaft with respect to said support a sufficient amount such that said mechanism imparts fine focusing movement.
2 Assignments
0 Petitions
Accused Products
Abstract
A monoaxial adjusting system is provided for accomplishing both coarse and fine focusing adjustments between the nosepiece and stage of a microscope. The coarse adjustment is made by rotation of either of two coarse adjusting knobs which in turn directly rotates a coarse adjusting shaft and cam. Suitable linkage is connected to the cam to affect linear movement between the nosepiece and stage. Fine adjustment is made through rotation of either of two fine adjusting knobs which actuate the coarse shaft and cam through a planetary gear reduction system and follower. A further adjusting mechanism is lever operated so that the operator may easily provide fine adjustment while manipulating the North-South stage and East-West slide control knobs. The entire adjusting system is spring and gravity loaded to eliminate backlash.
28 Citations
7 Claims
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1. In an optical instrument having a support and an adjusting system supported thereby, said system having at least one shaft and mechanism cooperatively engaged thereto for providing relative movement between the instrument'"'"'s optics and an object being examined, a fine focusing control mechanism comprising:
a rotatable member eccentrically positioned between said at least one shaft and said support for accomplishing fine focusing whereby rotation of said rotatable member displaces said at least one shaft with respect to said support a sufficient amount such that said mechanism imparts fine focusing movement. - View Dependent Claims (2, 3, 4, 5, 6, 7)
Specification