Carl Zeiss Meditec Ag

Carl Zeiss Jena Gmbh

Carl Zeiss Vision Gmbh

Hensoldt Ag

Carl Zeiss Jana Gmbh

Oliver Baumann

Bernd Spruck

Klaus Knupfer

Michael Claus

Dirk Muehlhoff

Ingo Koschmieder

Axel Doering

Thomas Schulze

Timo Kratzer

Gerhard Kelch

Herbert Krug

Markus Haidl

Volker Tautz

Hexin Wang

Jesús Miguel Cabeza Guillén

Peter Schnitzer

Stefan Gerth

Klaus Felgenhauer

Walter J Schwab

Jesus Miguel Cabeza Guillén

Michael Clauss

An optical observation instrument, in particular a spectacle, a reading aid or a telescope, comprises an optical element, in particular a spectacle lens, adapted to be controllably adjustable in its refractive power, a sensor, and a control unit for adjusting the refractive power as a function of signals from the sensor. The sensor is a brightness sensor. In a method of controllably adjusting a refractive power of an optical element in an optical observation instrument an optical parameter is captured by means of a sensor and the refractive power is adjusted as a function of a signal from the sensor. By means of the sensor the brightness of the light impinging on the optical instrument is captured.

Optical observation instrument and a method of controllably adjusting a refractive power in such instrument

The present invention is directed to an arrangement and a method for eye examination and/or for determining biometric eye data in which the movement of the eyes is compensated through the use of an eye tracker unit. The arrangement comprises a controllable digital illumination unit and an observation system which are arranged on separate supporting arms. A central control unit has connections to an image recording unit, an optical imaging system, an eye tracker unit and an output unit. Further, transmitter elements and/or actuating drives are provided at the separate supporting arms, at the zoom system and at the magnification changer. The examination can be adapted in an optimal manner to the task at hand by means of the structured illumination patterns that can be generated in a variable manner. Detection of all adjusting parameters relevant for recording can be used for calculations and for reconstructing the pertinent observation conditions. In case of repeated examinations for determining changes, e.g., during the recovery process following eye surgery, the regions can be found again in a simple manner and examined under exactly the same conditions.

Ophthalmological appliance comprising an eye tracker

An arrangement and method for positioning an ophthalmologic device with respect to the patient's eye to be examined in x-, y- and/or z-coordinates. The device includes a controllable illumination unit, an observation system, an image recording unit, a central control unit, an output unit, an eye tracker unit, and a device for relative positioning. The imaging system of the eye tracker unit has at least two different adjustable magnifications. In positioning the ophthalmologic device, the signal of the eye tracker unit is used to track a measuring mark and/or grid structure projected on the eye, and also to detect the position of the patient's eye with respect to the optical axis of the ophthalmologic device. The inventive solution makes it possible to automatically position the entire device with respect to the eye to be examined, thus simplifying examination and accelerating determination of biometric data.

Ophthalmologic apparatus and related positioning method

A telescope has at least one barrel. At least three optical elements, namely an objective lens, an inverting system, and an eyepiece are arranged within the barrel along a longitudinal axis thereof one behind another. Further, shaking movements of the barrel are compensated for by moving at least one of the optical elements relative to the barrel. The objective lens is rigidly connected to the barrel. The inverting system together with the eyepiece constitutes a common assembly. At least a part of the assembly is adapted to be moved relative to the longitudinal axis. As an alternative, the inverting system and the eyepiece are rigidly connected to the barrel and at least a part of the objective lens is adapted to be moved relative to the longitudinal axis.

Telescope

In a projection arrangement for projecting an image onto a projection surface, there are provided a light source ( ), a control unit ( ), a light modulator ( ), which is controllable by said control unit ( ) in order to generate an image on the basis of predetermined image data, an optical device ( ), arranged following said light modulator, for projecting said image onto the projection surface ( ), a film stage ( ) for holding a positive image recorded on a carrier medium, projection optics ( ), arranged following the film stage ( ) when projecting the positive image, and a control device ( ), allowing either to direct light from the light source ( ) to the light modulator ( ) or to illuminate a positive image, which is held by the film stage ( ), with said light. Thus, a projection arrangement is provided which can project both positive images and images generated on the basis of predetermined data onto a projection surface ( ).

Projection arrangement for projecting an image onto a projection surface

A projection arrangement for projecting an image onto a projection surface, said arrangement comprising a light source ( ), a film stage ( ), arranged following said light source, for holding a positive image recorded on a carrier medium, and projection optics ( ) for projecting a illuminated positive image, is provided with a control unit ( ), a light modulator ( ) controllable by said control unit in order to generate an additional image on the basis of predetermined image data, said light modulator being followed by an optical device ( ) for projecting the additional image onto the projection surface ( ), and with a beam splitter ( ) arranged between the light source ( ) and the film stage ( ) so as to split the light from the light source ( ) into a first partial beam directed to the film stage ( ) in order to illuminate the positive image and into a second partial beam which may be directed to the light modulator ( ). Thus, a projection arrangement is provided which allows to project additional images, such as subtitles, in addition to the illuminated positive image.

Projection device for projecting an image onto a projection surface, and a projection unit for coupling to a projector

Growing community of inventors

Aalen, Germany

Oliver Baumann