Abstract: 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).

Abstract: 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.

Abstract: The telephoto lens is in each case put together from two different lens systems, a front group and a focusing group. The object-side front groups have fixedly arranged lens elements or lens element groups and the image-side focusing groups have mutually displaceable lens elements or lens element groups. The focal lengths of the focusing groups are chosen such that with the front groups, they produce telephoto lenses of different overall focal lengths. The front groups can be combined in a modular manner with the focusing groups. Telephoto lenses having excellent imaging performances can be put together with reduced production expenditure. The numerical data of a number of lens parts are specified.

Abstract: An objective for use in photographic compact cameras has a relative aperture of 3.5 and a focal length of 35 mm, and is of the triplet type. The lens element on the object side is a cemented element. In order to achieve an extremely compact structural shape and balanced monochromatic correction, as well as a reduction in the chromatic magnification difference, the color coma and the color astigmatism, four design conditions are specified.

Abstract: A camera lens with a relative aperture of 1:1.4 and a focal length of 35 mm has five components. The first component includes a cemented element which is concave on the object side. The second component includes a cemented element which has an aspherical convex surface on the object side. The third component serves as an individual lens. The fourth component includes a cemented element which is concave on the object side. The fifth component has a cemented element which includes a concave surface on the image side and an aspherical convex surface on the object side.

Abstract: A one-piece lens hood possesses a frontal surface having an approximately rectangular opening, is axially displaceable via a guide from a position of rest into a working position, and is indissolubly connected to the lens. In the position of rest, the frontal surface of the lens hood terminates flush with the front edge of an accessory mount so that the threaded portion of the accessory mount is readily accessible for screwing in accessories such as filters. A format stop is additionally provided as an integral part of the lens in order to mask out stray light. This can, for example, be formed from a blackened metal foil which is mounted on a front terminal ring of the lens.