Device for non-contact wide-angle viewing of fundus during vitre

Details Device for non-contact wide-angle viewing of fundus during vitre Device for non-contact wide-angle viewing of fundus during vitre

1997-08-04

1998-08-11

Nguyen, Thong

Optical: systems and elements

Compound lens system

Microscope

359368, 359380, G02B 2100

Patent

active

057935246

ABSTRACT:
A wide-angle viewing attachment for an ocular microscope includes a first lens attached to the microscope and a second lens independently mountable with respect to the microscope. The second lens is positionable proximal to an eye of a surgical patient and is maintained in the proximal position by an attachment system including a support member coupled in a fixed position to an operating table on which the patient is reclined. A first support rod extends vertically from the support member and a clamp member is adjustably mounted on the support rod. A horizontally extending second support rod is adjustably coupled to the clamp member and terminates at one end in a generally flat plate. A lens carrier includes a spring clamp for holding the second lens and a support arm extending generally horizontally with respect to the first support rod. The carrier terminates in a magnet assembly which holds the lens carrier to the flat plate.

REFERENCES:
patent: 4690522 (1987-09-01), Welsh
patent: 4807989 (1989-02-01), Nagano et al.
patent: 4856872 (1989-08-01), Spitznas et al.
patent: 5009487 (1991-04-01), Reiner
patent: 5282085 (1994-01-01), Volkert et al.
patent: 5425730 (1995-06-01), Luloh
patent: 5526074 (1996-06-01), Volk
patent: 5588949 (1996-12-01), Taylor et al.

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