DD287776A5

DD287776A5 - ARRANGEMENT FOR PROJECTING A LIGHT MARK, PREFERABLY WITH A THEODOLITEN

Info

Publication number: DD287776A5
Application number: DD33232789A
Authority: DD
Inventors: Holger Rosenkranz; Peter Navratil
Original assignee: Veb Carl Zeiss Jena,De
Priority date: 1989-09-04
Filing date: 1989-09-04
Publication date: 1991-03-07
Also published as: DD287776B5

Abstract

Die Erfindung betrifft eine Anordnung zur Projektion einer Lichtmarke, vorzugsweise mit einem Theodoliten zur Punktmarkierung bei Industrievermessungssystemen und zur Laserabsteckung im Bergbau, indem in einem Markierungsstrahlengang vor dem Objektiv eines Theodolitfernrohres ein optisches System mit zwei Prismen vorgesehen ist, dessen Austrittsflaeche zentrisch zur optischen Achse des Theodolitfernrohres liegt und eines der Prismen eine strukturierte, zielmarkenerzeugende Reflexionsflaeche enthaelt, oder eines der Prismen fest mit einer strukturierten zielmarkenerzeugenden Platte verbunden ist. Figur{Theodolit; Zielpunkt; Markierungsstrahl; Projektion; Projektor; Justierung; Beobachtung; Fernrohr; Platte}The invention relates to an arrangement for the projection of a light mark, preferably with a theodolite for spot marking in industrial surveying systems and laser Absteckung in mining by a optical system with two prisms is provided in a marking beam in front of the lens of a theodolite telescope, the Austrittsflaeche centric to the optical axis of the theodolite telescope and one of the prisms contains a structured, target-generating reflection surface, or one of the prisms is fixedly connected to a structured target-generating plate. FIG {theodolite; Destination point; Marker beam; Projection; Projector; Adjustment; Observation; Telescope; Plate}

Description

exemplary The invention will be explained in more detail with reference to the schematic drawing. It shows

Fig. 1: eine erfindungsgemäße Anordnung zur Projektierung einer Lichtmarke mit einem Theodolitfernrohr. Fig. 2: zeigt eine Anordnung zur Projektion einer Lichtmarke.1 shows an arrangement according to the invention for configuring a light mark with a theodolite telescope. Fig. 2: shows an arrangement for the projection of a light mark.

auf einen nicht näheer dargestellten Zielpunkt, die mittels eines Trägers 5 auf einem Theodolitfernrohr 4 angeordnet ist. Im Markierungsstrahlengang vor einem Objektiv 13 des Theodolitfernrohres 4 ist dabei ein Reflexionssystem 1 umfassend zwei 90°-Prismen 2 und 3 so angeordnet, daß die Stahlenaustrittsfläche des Prismas 3 ungefähr rechtwinklig und zentrisch zur optischen Achse des Theodolitfernrohres 4 liegt. Dazu ist das Reflexionssystem 1 fest an dem Träger 5 angeordnet, der außerdem am Theodolitfernrohr 4 arretiert ist und die Mittel zur Erzeugung des Markierungsstrahles trägt. Als Markierungsstrahl dient insbesondere ein aufgeweitetes Laserstrahlbündel. Die Erzeugung und Formung des Laserstrahlbündels erfolgt mit an sich bekannten nicht näher dargestellten technischen Mitteln. Die Laserstrahlung wird in einer Laserlichtquelle 6 erzeugt und in einer Optik 7 aufgeweitet. Um eine vorteilhafte Markierung zu erzeugen, enthält eines der Prismen des Reflexionssystems 1 eine strukturierte, zielmarkenerzeugende Reflexionsfläche, oder eines der Prismen des Reflexionssystems 1 ist fest mit einer strukturierten, zielmarkenerzeugenden Platte 8 verbunden. Die Laserlichtquelle 6 kann auch eine Laserdiode oder die Austrittsfläche einer Lichtleitfaser sein, welche eingangsseitig mit einer Laserquelle verbunden ist. Am Reflexionssystem 1 sind keine Mittel zur Justierung des Markierungsstrahles zur Zielachse des Theodolitfernrohres 4 vorgesehen, diese erfolgt mittels der Justierschrauben 9,10,11 und 12 an der Laserlichtquelle 6. Eine Justierung kann aber auch durch Kippung, Drehung oder Verschiebung des Prisma 2 des Reflexionssystenis 1 erfolgen. Der Einsatz der Projektionsanordnung an Vermessungsgeräten mit eingebauten, auf die Ziellinie wirkenden Neigungskompensatoren ist eingeschränkt, da der Markierungsstrahl nicht über das stabilisierende Element abgebildet wird.to a target point not nearer, which is arranged on a theodolite telescope 4 by means of a carrier 5. In the marking beam path in front of an objective 13 of the theodolite telescope 4, a reflection system 1 comprising two 90 ° prisms 2 and 3 is arranged so that the steel exit surface of the prism 3 is approximately at right angles and centric to the optical axis of the theodolite telescope 4. For this purpose, the reflection system 1 is fixedly arranged on the carrier 5, which is also locked to the theodolite telescope 4 and carries the means for generating the marking beam. The marking beam is in particular a widened laser beam. The generation and shaping of the laser beam is done with known per se technical means not shown. The laser radiation is generated in a laser light source 6 and expanded in an optical system 7. In order to produce an advantageous marking, one of the prisms of the reflection system 1 contains a structured, sight-generating reflection surface, or one of the prisms of the reflection system 1 is fixedly connected to a structured, sight-marking plate 8. The laser light source 6 may also be a laser diode or the exit surface of an optical fiber, which is connected on the input side to a laser source. On the reflection system 1, no means for adjusting the marking beam to the target axis of the theodolite telescope 4 are provided, this is done by means of adjusting screws 9,10,11 and 12 to the laser light source 6. An adjustment can also by tilting, rotation or displacement of the prism 2 of the Reflexionssystenis 1 done. The use of the projection arrangement on surveying equipment with built-in inclination compensators acting on the target line is limited because the marker beam is not imaged over the stabilizing element.

Claims

1. An arrangement for the projection of a light mark, preferably with a theodolite, being provided for projecting the Uchtmarke on a target point a Zielmarkenprojektor with a laser light source and in the expanded beam path of the projector, a transparent plate and the projection assembly is detachably mounted on the Theodolitfernrohr, characterized in that in a marking beam path in front of the objective of a theodolite telescope, an adjustable optical system with preferably two prisms is provided, whose exit surface is centered to the optical axis of the theodolite telescope, and that one of the prisms contains a structured, aiming reflective reflection surface or that one of the prisms fixed with a structured, targeting plate is connected.

2. Arrangement for the projection of a light mark according to claim 1, characterized in that the target mark projector is not integrated into the optical system of the theodolite.

For this 1 page drawing

Field of application of the invention

The invention relates to an arrangement for the projection of a light mark on a target point, preferably with a theodolite, being provided for projecting the light mark on the target point, a laser light source and in the expanded beam path of the projector, a transparent plate and the projection assembly is detachably mounted on the theodolite telescope. This arrangement is particularly applicable for spot marking in industrial surveying systems and for laser stakeout in mining and construction.

Characteristics of the known prior art

There are a variety of technical solutions known that use the observation telescope of the surveying device for collimating a Zielmarkierungsstrahles. The marker beam must be coupled between the lens and eyepiece or behind the eyepiece in the observation beam path, by hinged or fixed reflective optical components. This has the disadvantage that during the emission of the marker beam no observation with the telescope is possible or that in many cases a darkened, wrong-colored field of view is present due to the wavelength dependence of the optical elements. Furthermore, when the marking beam is coupled behind the reticule of an observation telescope, the * stick figure must contain an opening in the middle in order to avoid diffractions or disturbing reflections. From DE-OS 31-15823 a method and a device for point determination by forward cutting using at least two set up at a predetermined distance Winkelmeßgeräte is known in which the light source is a laser transmitter on the telescope dO3 Winkelmeßgerätes is arranged and shaped the marker beam in a separate Kollimatoroptik is, with the presence of an eccentricity between the light source and the target axis of the observation telescope, the inclination of the optical axis of the target mark projector with respect to the optical axis of the observation telescope must be readjusted pointwise distance-dependent during the measurement.

Object of the invention

By * the invention, the aforementioned disadvantages of the prior art are to be eliminated and 3ine accurate target detection can be obtained without constant readjustment.

Explanation of the essence of the invention

The invention is based on the object ₍ an arrangement for the projection of a light mark, preferably with a theodolite to be designed so that a target brand projector is not integrated into the optical system of the geodetic device, so in addition to the emission of a marker beam by the target brand projector at the same time an observation of the target point The observation telescope of the theodolite can be made without obscuring the observation by a faded, darkened field of view, and that a constant control of the level of adjustment during a measurement is obtained independently of the distance According to the invention this object is preferably achieved with a theodolite and a solvable on the Theodolite telescope arranged target brand projector, which comprises a laser light source and a collimator in the expanded beam path comprises solved in that in a marking beam path in front of the lens of a theodolite telescope adjustable there is provided an optical system with preferably two prisms whose exit surface is zontrically to the optical axis of the theodolite telescope, and that one of the prisms contains a structured target-generating reflection surface or that one of the prisms is fixedly connected to a structured Zielnarkenerzeugenden plate. The invention has the advantage that a marker beam is emitted to a target point in full intensity and without distance-dependent readjustment and at the same time observation of the target point with the theodolite telescope can be done without distorting reflections.