Abstract: A device is provided for establishing or releasing the coupling between an adjustment ring, which can be rotated on a base element by way of a detent mechanism and is provided with an adjustment shaft for optical elements, and a cylindrical index ring, which is inserted between the adjustment ring and the base element so as to rotate in relation to an index mark provided on the base element, wherein an inwardly directed ring surface is integrally formed on the edge of the index ring pointing toward the adjustment ring, at least one friction element under spring pressure is inserted between the adjustment ring and the ring surface, and the spring pressure can be removed by way of a pressure element inserted into the top face of the adjustment ring or by way of a lever mechanism.

Abstract: A device is provided for establishing or releasing the coupling between an adjustment ring, which can be rotated on a base element by way of a detent mechanism and is provided with an adjustment shaft for optical elements, and a cylindrical index ring, which is inserted between the adjustment ring and the base element so as to rotate in relation to an index mark provided on the base element, wherein an inwardly directed ring surface is integrally formed on the edge of the index ring pointing toward the adjustment ring, at least one friction element under spring pressure is inserted between the adjustment ring and the ring surface, and the spring pressure can be removed by way of a pressure element inserted into the top face of the adjustment ring or by way of a lever mechanism.

Abstract: A device for fast reticle adjustment of a sighting device is described, which is provided with a rotatable safeguard against unintended adjustment and has tactile and visual indicating means for the locked and unlocked position of the safeguard.

Abstract: A device for fast reticle adjustment of a sighting device is described, which is provided with a rotatable safeguard against unintended adjustment and has tactile and visual indicating means for the locked and unlocked position of the safeguard.

Abstract: An illumination apparatus for a telescopic sight has a lamp, in particular for a reticle of the telescopic sight. The apparatus comprises a control circuit for supplying the lamp, and an adjustment knob cooperating with the control unit for adjusting the brightness of the lamp. Incremental markings are associated with the adjustment knob. The control unit is provided with first means for scanning the incremental markings when the adjustment knob is operated, second means for generating incremental signals, and third means for generating from the incremental signals a signal for controlling the brightness of the lamp.

Abstract: An illumination apparatus for a telescopic sight has a lamp, in particular for a reticle of the telescopic sight. The apparatus comprises a control circuit for supplying the lamp, and an adjustment knob cooperating with the control unit for adjusting the brightness of the lamp. Incremental markings are associated with the adjustment knob. The control unit is provided with first means for scanning the incremental markings when the adjustment knob is operated, second means for generating incremental signals, and third means for generating from the incremental signals a signal for controlling the brightness of the lamp.