SU99990A1 - Dual Range Optical Range Finder - Google Patents

Description

The proposed double-image optical rangefinder is characterized by the fact that an additional optical system, equipped with a wedge optical compensator, is included in the telescope in order to improve the accuracy of determining distances.

FIG. Figure 1 shows the optical layout and beam path in the proposed rangefinder; in fig. 2 and 3-field of view with zero and most samples.

The / / ometer consists of a tube with an internal lens with a lens 2, a focusing lens 3, an eyepiece 7, and additional optical components that turn the tube into a distance meter.

Additional optical components are: two optical achromatic wedges 1, facing the lens of the tube and dividing it, 1, their them into two independent optical systems, each of which gives a separate image of the object in the focal plane of the ocular tube; two pairs of moving optical wedges 4 and 5, forming an optical compensator designed to measure the parallax angle between the horizontal rail marks and those located between the focusing lens 3 and the focus of the tube; optical fiber 8, bonded to a wedge 4, designed to take readings at the time of combining images of rake brands; two diamond-shaped prisms 6 receiving the images of the rail marks and guiding them to the center of the field of view of the tube; a reference optical system transmitting the image to the focal plane of the tube.

The field of view of the pipe at zero reading, as shown in FIG. 2 corresponds to a position in which the Oic wedges 4 and 5 are swung before they touch. The position of the wedges 4 and 5, shown in FIG. 1, gives the largest reading and corresponds to the second position of the image of the slats in the pipe. In this case, the field of view has the form.

No. 99990 2 -

shown in Fig. 3. The difference of these two readings shows the value of the parallax angle characterizing the distance from the tool stand to the staff. Any other longer distances have other parallax angles. To bring together two images at a closer distance visible in the field of view of the pipe, diamond-shaped prisms 6 are used, which bring the beam of rays from the staff separately to the center of the field of view and are placed symmetrically on the dividing line.

With slop, an optical system consisting of a mirror 9, a light filter 10, irisma 11, lens 12 and a rhombic prism 13, the image of ipsa 8 is transferred to the focal plane of the tube's eyelet on the back face of the upper prism 6. Thus, in the field of view of the pipe I count with and position: 1.

Since the slats images are transmitted separately by each half of the lens with an appropriate selection and calculation of the angle of diamond prisms 6, it is possible to achieve alignment of the pupils of each half of the lens superimposed on each other, which eliminates the need to use a diaphragm placed usually in the exit pupil plane.

The main sections of wedges 4 and 5, constituting together a plane-parallel nlastipka, are placed along the edge of the plane to the drawing plane.

In order to make it possible to measure distances in different parts of Ikal, line 5 can displace within 2-3 mm along the optical axis of the pipe.

To obtain a horizontal position, you can use a cam mechanism fixed on the horizontal axis of the pipe, interacting mechanically with wedges 5. In this case, the starting position of the slides 8 has a constant count, and the difference of readings along the slit gives a reduced distance-horizontal position.

PREED MET OF INVENTION

The use of a wedge optical compensator in the optical system of the theodolite telescope for distance measurements of distances, in order to increase their accuracy.

Fig. 1

Phage. 2