Attachment for microscopes

Details Attachment for microscopes Attachment for microscopes

1987-03-12

1989-08-15

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

350429, 350518, 351205, 384527, G02B 702

Patent

active

048568724

ABSTRACT:
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.

REFERENCES:
patent: 1755759 (1930-04-01), Ahmels et al.
patent: 3168610 (1965-02-01), Kende
patent: 4172634 (1979-10-01), Thompson
patent: 4223963 (1980-09-01), Glodin et al.
patent: 4326789 (1982-04-01), Aoyagi et al.
patent: 4371312 (1983-02-01), Tank
patent: 4582350 (1986-04-01), Okajima
patent: 4606618 (1986-08-01), Geller

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