Oculus Optikgeraete Gmbh

Herbert Schwind Gmbh & Co. Kg

J.d. Moller Optische Werke Gmbh

Josef Reiner

Rainer Kirchhuebel

Lorenz Twisselmann

Manfred Spitznas

Elfriede Aulhorn

Wolfgang Veit

Rainer Kirchhubel

Jakob Kocher

Provisions must be made in surgery microscopes for eye surgeries through the selective adding of optics so that a non-reversed and erect-standing image can be produced including that of the fundus of the eye. A device for the image reversion is fastened on the microscope so that it can be moved into the beam path and is then provided between the lens and the eye so that the overall height of the microscope is not influenced. This inventive arrangement can be utilized very universally on very differently designed microscopes and can be operated with prism systems of varying designs.

Microscope for the wide-angle viewing, in particular for eye surgeries

A device for viewing the fundus of the eye, in particular by means of an optical system, has a handle and a lens system fastened to the handle. The lens system has thereby a first lens with a concave lens surface, which can be placed onto the corona of an eye and can be combined with further lenses. Such a device is further developed in such a manner that on the one hand the fundus of the eye can be viewed and on the other hand a quick change for viewing of the foreground of the eye is possible when the device is removed from the beam path between the eye and the optical system. The device is therefore further developed in such a manner that the handle has a mounting for a supplementary lens, which is mounted in viewing direction in front of the lens system, whereby the strength of the supplementary lens is chosen in such a manner that when viewing the fundus of the eye with the device the optical system is actually clearly focused onto the foreground of the eye.

Device for viewing the fundus of the eye

A stereoscopic microscope includes a binocular eyepiece arrangement, a binocular magnification changer, and a monocular lens arrangement. A reversal lens system can be inserted into beam paths in front of or behind the magnification changer, whereby it exchanges the two beam paths against one another and at the same time causes an image reversal. Thus, the microscope enables quick and simple changing between two focusings of the microscope without limiting the operation of the magnification changer. A supplementary lens can be inserted on the input side of the lens arrangement into the beam paths and an optic system can be inserted into the beam path between the supplementary lens and the eye for wide-angle viewing of the retina. The supplementary lens is a convex lens, the focal length of which is chosen in such a manner that the retina can be viewed with the microscope through the inserted supplementary lens and the optic system, while the lens arrangement of the microscope is focused on the cornea.

Stereoscopic microscope

An optic system for viewing the inside of the eye with a lens system. The lens system has a concave lens surface configured to be placed onto the cornea of an eye. The lens system has furthermore at least one further lens arranged in viewing direction in front of the first lens. The area to be viewed is also illuminated, whereby this illumination will not result in reflexes on optical surfaces. Furthermore, such an optic system is small, lightweight and compact that it neither interferes during a pre-surgical or post-surgical diagnosis nor during surgery. The optic system has for this purpose an illuminating device, the light-exiting surface of which lies within the first lens, or terminates flush with a lens surface of the first lens.

Optic system for viewing and for photographing the inside of an eye

A vision-testing apparatus includes a concave mirror and at least one test object (2) which can be changed in position and is arranged between the concave mirror (1) and its focal point (f) in a first optic path (W1). In order to be able to carry out different vision tests with an apparatus which is simple in design and compact in manufacture, it is provided that the eye (7) of a person being tested is arranged at a focal point (F) of the concave mirror (1) and that between the concave mirror (1) and the test object (2) there is arranged a first partially translucent dividing mirror (3) to form a second optic path (W2) from the concave mirror (1) to the eye (7) of the person being tested.

Eye testing device

A prism system for a stereoscopic microscope in which both an image inversion and also an interchanging of the sides of the two beam paths can occur. In order to achieve a reliable simply constructed design of a small size, the prism system has four reflecting surfaces for each beam path, of which two surfaces are constructed as reflection surfaces and are arranged in planes parallel with respect to the optic longitudinal axis. The two other surfaces are constructed as inlet or rather outlet surfaces and are inclined at 45.degree. with respect to the optic longitudinal axis and at 90.degree. with respect to one another. The inventive prism system makes it possible with a distinctly low structural height to interchange beam paths which are parallel with one another, and to carry out an image inversion at the same time. The prism system according to the invention can be utilized in particular in stereoscopic microscopes to carry out surgeries, in particular eye surgeries.

Prism system for a stereoscopic microscope

The subassembly arranged between a zoom system and the ocular telescope of a stereoscopic surgery microscope for eye surgery comprises a prism system, arranged in a casing, for a complete image reversal with a beam displacement and a direction-invariable optical path, it being possible to move the prism system out of the optical path between the zoom system and the ocular telescope for eliminating image reversal.

Stereoscopic surgery microscope for eye surgery with selective image

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.

Surgical stereomicroscope

An enlarging apparatus includes a base with an upright post and a housing supported on the post above the base. An optical system in the housing includes a vertically adjustable, downwardly facing concave mirror having its focal point adjacent the base and a semi-transparent mirror arranged along and inclined with respect to the optical axis of the concave mirror. Light beams from an object supported on the base pass through the semi-transparent mirror, are reflected by the concave mirror, and are then reflected by the semi-transparent mirror. A binocular telescope is supported on the housing in alignment with the path of the beams reflected by the semi-transparent mirror.

Enlarging and reading apparatus

An apparatus for testing twilight vision and blinding sensitivity includes a housing having openings in opposite sides thereof, a person to be tested being able to look through the housing along a line of sight extending through both openings. A filter is provided for one of the openings to limit external light entering such opening. A concave mirror is arranged in the housing with its optical axis normal to the line of sight, and a semi-transparent mirror is arranged at the intersection of and at 45.degree. angles with respect to the line of sight and the mirror optical axis. A screen arranged at the focal point of the mirror is simultaneously illuminated by two projectors, a test figure being arranged in the beam of one projector and the light intensities of the two projectors being inversely proportionally controlled. Two filters are provided which can each be inserted in the beam of a respective one of the projectors to further reduce the light intensity. A headlight simulating source is arranged adjacent the field of vision on the screen and a third projector projects at least one fixation point onto the screen.

Apparatus for testing twilight vision and blinding sensitivity

Method and apparatus for determining eye refraction using corrective lenses comprising projecting the corrective lens by means of an optical system into the pupil of the eye or in a predetermined spaced relation in front of said pupil, e.g., via a splitting mirror; this permits sight testing without the use of test spectacles and impairment of field of vision.

Method and apparatus for eye refraction determination

Method and apparatus for projecting or imaging optotypes so that they can be perceived in space under conditions of unimpeded vision without requiring, e.g., projection screens.

Growing community of inventors

Cologne, Germany

Josef Reiner