Ernst Leitz Wetzlar Gmbh

Leica Camera Ag

Leica Camera Gmbh

Leica Gmbh

Minox Gmbh Optische Und Feinmechanische Werke

Alfred Hengst

Heinz Keiner

Heinrich Janke

Hans-Kurt Uellenberg

H Peter Farnung

Rolf Speier

Manfred Meinzer

Jens Kohlhase

Sigrun Kammans

Gernot Kettler

Lothar Kolsch

Philipp Syré

Ernst Ruehl

Philipp Syr&eacute;

A binocular telescope with internal focusing and two cylindrical barrel tubes, each fastened to a bridge and accommodating an objective lens, a focusing lens, a prism system for image inversion and an eyepiece. The prism system is configured so that the optical axis of the eyepieces is offset relative to the optical axis of the objective lenses. The bridge is provided with two cylindrical apertures in which the barrel tubes are mounted parallel to one another, each rotatable about the optical axis of its objective. Each barrel tube comprises a rotary sleeve, an objective tube and an eyepiece tube. The bridge is one piece and has a small length compared to the barrel tube length. The rotary sleeves are inserted into the apertures and the objective tubes and eyepiece tubes are connected to the rotary sleeves such that they lie rotatable on the upper and lower sides of the bridge.

Binocular telescope

A method for focusing and diopter adjustment in a binocular telescope, in which, for the purpose of diopter adjustment, optical focusing elements () in the two telescope tubes () can be displaced relative to one another, is distinguished by the fact that, as a result of rotation of a focus drive knob (), both focusing elements () are displaced simultaneously by equal distances via a focus drive, the displacement of at least one of the focusing elements () can be locked (), and, as a result of rotation of the focus drive knob (), while overcoming a frictional force in the focus drive to the locked focusing element (), only the unlocked focusing element () is displaced.

Focusing device with diopter adjustment

A monocular or binocular optical system that is capable of automatically adjusting a diopter setting upon or during a change in magnification in a way that acts to preserve focus and a corresponding method for adjusting a diopter setting to preserve focus upon or during a change in magnification.

Method and device for focusing and diopter compensation of a telescope

A play-free rotary mounting for a drive roll held on stop surfaces in the axial direction on a cylindrical body, wherein V-shaped annular grooves with an opening angle V are provided at least in one of the end faces of the drive roll and the stop surface located opposite them on the body, V-shaped bearing shells with at approximately identical opening angles and approximately identical leg length are inserted into the annular grooves, the vertex diameters of the annular grooves differ from the vertex diameters of the bearing shells. Balls with a diameter matched to the opening width of the bearing shells are inserted into the bearing shells. At least one of the stop surfaces can be adjusted in the axial direction in order to clamp the drive roll in. Instead of different vertex diameters, different opening angles can also be provided for the annular grooves and opening angles for the bearing shells.

Play-free rotary mounting

An arrangement for rotatable adjustment of a cap on an eyepiece housing with a stationary pin pointing radially outward from the eyepiece housing and a groove which is assigned to the pin, arranged on the inner side of the cap and rises in the axial direction, is characterized in that, in a plane at right angles to the longitudinal axis of the eyepiece housing, three pins are arranged on the latter, the heads of which pins have at least approximately the same spacing from the longitudinal axis, and in that the sliding bottom of the groove assigned to each pin has a smaller spacing in relation thereto, so that the cap bears against the pins under prestress.

Arrangement for rotatable adjustment of a cap on an eyepiece housing

Camera housing

A carrying strap having a suspension lug which is attached at one end in a loop of the strap, is in the shape of a U and includes in the part of the lug lying in the loop, two open legs bent symmetrically at right angles to each other. The legs lie opposite each other in different parallel planes and overlap at a predetermined distance (14). The end of the legs are bent off toward the loop. The carrying strap also includes a locking element which can be pushed over the loop and the leg ends of the suspension lug. The locking element (12) includes in its upper part, two rectangular slot openings (16, 16'), with a separating web (17) there between and lying in the loop (15). The locking element also includes in its lower part, a rectangular opening (18) for receiving the legs (13, 13') of the suspension lug (10) which are enclosed by the carrying strap (11).

Suspension lug and locking element for a carrying strap

A monocular telescope having a constant length includes a lens mounted in a tube and interchangeable eyepieces to vary the magnification. Focusing is performed using a positioning member to move a focusing unit axially in the tube. The rate of focus adjustment is adaptable to the selected magnification due to the provision of a transmission gear having different diameter gear wheels arranged along the positioning member. The transmission gear can be operatively coupled to the interchangeable eyepiece.

Monocular telescope having a focusing unit whose mechanical sensitivity

Pair of binoculars

The binocular telescope has in each barrel a focusing member (internal focusing) which is joined to a support guided on a guide rod. When a control knob is actuated, this support is displaced axially by means of a transmission bar. A driving pin, which engages into the focusing member, is integrally formed on the support for this purpose. A spring which interacts with the driving pin and acts upon the focusing member effects tilt-free guidance and prevents radial play, even with short guide lengths of the focusing member.

Binocular telescopr with radially acting compensating spring

The binocular telescope with internal focusing and articulated bridge contains as a joint focusing mechanism two setting rings which can be coupled and which are arranged co-axially on a central axis. In uncoupled condition each setting ring is allocated to a focusing member of a tube, so that focusing can be done independently from each other. In coupled condition both focusing members are shifted jointly by actuation of each of the setting rings. Thus, an unintentional adjustment of the relative positions of the two focusing members is impossible, and focusing of each focusing member in succession is possible.

Growing community of inventors

Lahnau, Germany

Alfred Hengst