Abstract: A drying light source (1), in which the light of a number of single light sources (3) is applied heterodyned and bundled to an object level (5) with the help of optical elements (6, 4, 7, 8).

Abstract: A drying light source (1), in which the light of a number of single light sources (3) is applied heterodyned and bundled to an object level (5) with the help of optical elements (6, 4, 7, 8).

Abstract: A camera hand piece (1) with camera housing (12) has a microscopic probe (2) at the front end. On the rear side is a transmission cable (13) which is attached to the camera hand piece (1) with the aid of a coupling nut (14). The camera housing (12) accommodates a microscope housing (11) and includes a motorized drive (4), which drives an eccentric (7) via a gear (6) mounted in a gear housing (9). The eccentric (7) actuates a pusher (5), which moves a connecting rod (8) and thereby displaces a focusing lens system (3) attached to it in the axial direction. This axially displaceable focusing lens system (3) together with a condenser lens system (10), forms a microscopic lens system arranged in a microscope housing (11).

Abstract: A safety receptacle or contact system for use at the outlet end of an electric supply line and for connection of at least one attachment plug that has at least two contact pins; the receptacle comprises a base plate; at least two connector ends supported by the base plate; a lid or cover housing including a front plate having at least two openings for receiving the plug pins and for guiding them into contact with the connector ends; an electrical circuit associated with the receptacle for controlled connection of the connector ends with the electric supply line and comprising a relay for breaking contact between the connector ends and the supply line when the two plug pins are withdrawn from the receptacle; and a light barrier connected with the relay for control thereof and arranged for operation in response to connection or non-connection of the plug with the receptacle.

Abstract: An improved device for controlled illumination of a cavity such as in endoscopy or inspection of machinery within a housing; the device comprises a light source and a fiber optics for feeding light into the cavity, and a control means arranged between the light source and the entrance plane of the fiber optics for controlling the luminous density at the exit plane of the fiber optics; the control means is in the form of a diaphragm disc arranged between the light source and the entrance plane of the fiber optics and is capable of linear or rotational displacement or motion; the disc has an opening having a width that varies cross-wise to the direction of displacement or motion of the disc-shaped diaphragm so as to provide a variable aperture; the luminous density at the exit plane will, in general, be determined by the light flux that impinges upon the entry plane, and that flux is controlled by the variable aperture.

Abstract: A generally flexible fiber-optic light guide comprising a multifilament bundle of coated fibers in a sheath and having at least one permanently bent portion defining a rigid curve, the bent portion being arranged within an end piece or socket of the light guide; the coated fibers within the bent portion being closely packed and embedded in a solid material capable of serving as a lubricant when in an uncured state. The permanently bent portion is produced by arranging the coated fiber closely packed in a straight tube made of a ductile material, filling the tube with an agent capable of serving as a lubricating agent when in an uncured state, bending said tube with the fibers and the lubricating agent and curing the lubricating agent so as to form a solid matrix or bedding for the fibers in the bent portion.