Abstract: A distance measuring system comprises a radiation source, a radiation detector, a measuring lens system, a first damping filter, a second damping filter and an actuator. The radiation source is constructed to emit optical radiation and the radiation detector is constructed to detect optical radiation. The measuring lens system is designed to project optical radiation to a target and to conduct optical radiation reflected by the target to the radiation detector. The first damping filter has a constant damping and can be arranged in a beam path between the radiation source and the measuring lens system. The second damping filter has an adjustable damping and can be arranged in a beam path between the measuring lens system and the radiation detector. The actuator is mechanically coupled to the first and also to the second damping filter and is constructed to move the first and the second damping filter in common.

Abstract: A device for measurement by means of a light ray is equipped with a covering device for reducing stray light. The device comprises an array of lenses along an optical axis; a prism attached to one of the lenses with a slanted surface for coupling of the light ray incident from a light source placed lateral to the optical axis, onto the optical axis, so that the light ray can pass through the array of lenses along the optical axis; a receiver for receipt of a share of the light ray reflected by an object; and a covering device for at least one area of the prism that scatters a share of the light ray as stray light to the receiver.

Abstract: A device for measurement by means of a light ray is equipped with a covering device for reducing stray light. The device comprises an array of lenses along an optical axis; a prism attached to one of the lenses with a slanted surface for coupling of the light ray incident from a light source placed lateral to the optical axis, onto the optical axis, so that the light ray can pass through the array of lenses along the optical axis; a receiver for receipt of a share of the light ray reflected by an object; and a covering device for at least one area of the prism that scatters a share of the light ray as stray light to the receiver.

Abstract: A device for measurement by means of a light ray is equipped with a covering device for reducing stray light. The device comprises an array of lenses along an optical axis; a prism attached to one of the lenses with a slanted surface for coupling of the light ray incident from a light source placed lateral to the optical axis, onto the optical axis, so that the light ray can pass through the array of lenses along the optical axis; a receiver for receipt of a share of the light ray reflected by an object; and a covering device for at least one area of the prism that scatters a share of the light ray as stray light to the receiver.

Abstract: A distance-measuring system includes a light source, a light detector, and measuring optics for projecting light emitted by the light source to a target and for guiding light reflected from said target towards the light detector. The distance-measuring system also includes reference optics for guiding light emitted by the light source within the system towards the light detector as internal reference light and a variable attenuator for adjusting intensity of light incident on the light detector. The variable attenuator includes an attenuating filter arranged in a beam path between the measuring optics and the light detector and an actuator coupled to the attenuating filter for moving the attenuating filter. The distance-measuring system further includes an optical selector coupled to at least one of the actuator or the attenuating filter and moved by the actuator together with the attenuating filter.

Abstract: A distance measuring system comprises a radiation source, a radiation detector, a measuring lens system, a first damping filter, a second damping filter and an actuator. The radiation source is constructed to emit optical radiation and the radiation detector is constructed to detect optical radiation. The measuring lens system is designed to project optical radiation to a target and to conduct optical radiation reflected by the target to the radiation detector. The first damping filter has a constant damping and can be arranged in a beam path between the radiation source and the measuring lens system. The second damping filter has an adjustable damping and can be arranged in a beam path between the measuring lens system and the radiation detector. The actuator is mechanically coupled to the first and also to the second damping filter and is constructed to move the first and the second damping filter in common.

Abstract: A distance-measuring system includes a light source, a light detector, and measuring optics for projecting light emitted by the light source to a target and for guiding light reflected from said target towards the light detector. The distance-measuring system also includes reference optics for guiding light emitted by the light source within the system towards the light detector as internal reference light and a variable attenuator for adjusting intensity of light incident on the light detector. The variable attenuator includes an attenuating filter arranged in a beam path between the measuring optics and the light detector and an actuator coupled to the attenuating filter for moving the attenuating filter. The distance-measuring system further includes an optical selector coupled to at least one of the actuator or the attenuating filter and moved by the actuator together with the attenuating filter.

Abstract: A distance-measuring system includes a light source, a light detector, and measuring optics for projecting light emitted by the light source to a target and for guiding light reflected from said target towards the light detector. The distance-measuring system also includes reference optics for guiding light emitted by the light source within the system towards the light detector as internal reference light and a variable attenuator for adjusting intensity of light incident on the light detector. The variable attenuator includes an attenuating filter arranged in a beam path between the measuring optics and the light detector and an actuator coupled to the attenuating filter for moving the attenuating filter. The distance-measuring system further includes an optical selector coupled to at least one of the actuator or the attenuating filter and moved by the actuator together with the attenuating filter.

Abstract: A distance-measuring system includes a light source, a light detector, and measuring optics for projecting light emitted by the light source to a target and for guiding light reflected from said target towards the light detector. The distance-measuring system also includes reference optics for guiding light emitted by the light source within the system towards the light detector as internal reference light and a variable attenuator for adjusting intensity of light incident on the light detector. The variable attenuator includes an attenuating filter arranged in a beam path between the measuring optics and the light detector and an actuator coupled to the attenuating filter for moving the attenuating filter. The distance-measuring system further includes an optical selector coupled to at least one of the actuator or the attenuating filter and moved by the actuator together with the attenuating filter.

Abstract: A device for measurement by means of a light ray is equipped with a covering device for reducing stray light. The device comprises an array of lenses along an optical axis; a prism attached to one of the lenses with a slanted surface for coupling of the light ray incident from a light source placed lateral to the optical axis, onto the optical axis, so that the light ray can pass through the array of lenses along the optical axis; a receiver for receipt of a share of the light ray reflected by an object; and a covering device for at least one area of the prism that scatters a share of the light ray as stray light to the receiver.

Abstract: A method for target seeking in geodetic survey measurements comprises the steps of generating at least a first light bundle by a measurement device from a light source arranged therein, the light bundle periodically pivoting back and forth or revolving about the standing axis of the measurement device and fanning out in the vertical plane and being sent to at least one receiver arrangement arranged in at least one target station arranged at a distance from the measurement device.