Scanning microtelescope for surgical applications

Details Scanning microtelescope for surgical applications Scanning microtelescope for surgical applications

G - Physics

02

B

88/17, 240/82, 8

G02B 23/24 (2006.01) A61B 1/00 (2006.01) A61B 1/07 (2006.01) G02B 23/26 (2006.01)

Patent

CA 1278934

ABSTRACT Adjustment of the field-of-view angle in a surgical microtelescope from the outside of the patient's body is made possible by including in the objective op- tical system an assembly of mutually movable prisms. The prisms can be moved by a wire running alongside the optical fibers which convey illumination through the tube. In one embodiment, a movable prism pivots with respect to a fixed prism about an axis coincident with the axis of the image as it is transmitted between the prisms; in another embodiment, a partially silvered prism is slidable between two fixed prisms so as to pick up the image from one of them in one position, and the image from the other in the other position. Apparatus in the eyepiece is also disclosed to compensate for the rotation of the image when the pivoting embodiment is used.

537608

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