Oculus Optikgeraete Gmbh

Wolfgang Veit

Rainer Kirchhuebel

Josef Reiner

Manfred Spitznas

M Spitznas

Magnification spectacles

An attachment for microscopes, in particular for stereomicroscopes, facilitates a contact-free viewing of an eye freely movable by the patient, in particular the fundus of the eye. Such an attachment must be easily and quickly attachable to the microscope and must deliver an image section of up to 120.degree.. Moreover, the free movability of the eye must be assured and the attachment must also at high temperature be able to be sterilized quickly, without influencing the wearability of the attachment. This is achieved by an attachment having two lenses or lens systems, the distance between the systems being adjustable and the systems replacing the objective lens of the microscope. The housing of the attachment can be connected to the microscope through a screw or bayonetlike coupling. The outer lens of the attachment is arranged easily movably in axial direction relative to the housing, whereby all reciprocally movable and turnable parts of the attachment are provided with a coating, which consists of pressed and sintered PTFE polymers containing Al.sub.2 O.sub.3 particles.

Attachment for microscopes

A stereomicroscope for use in performing surgeries, in particular eye surgeries, which has a collecting lens common to both beam paths and has for each beam path an objective and an ocular tube with two reversing prisms with adjustable interocular distance, which ocular tubes form a telescope. In order to produce, at an angled beam path with the help of the panorama funduscopy, an upright and unreversed image, between the objective (7) and the ocular tubes (11, 12) which contain the telescope is provided a double-refracting, reflecting system (4, 19, 20) which delivers a turned, unreflected image and covers both beam paths, which system is arranged in the stereomicroscope so that same can be exchanged with a 90.degree. prism which is constructed with the same optical path length and covers both beam paths.

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Solms, Germany

Wolfgang Veit