SU996864A1 - Device for stereo instruments for introducing additional picture into field of vision - Google Patents

Description

The invention relates to a photogrammetric instrument making and can be used in various instruments with a stereocomparator measuring part for inserting an additional image in the form of an estimated or measuring mark, an image of design elements decoded and picked up on a photo basis of contours into a stereo model.

The device used in the device for determining the particle size distribution for automatic change of the mao-taba of its estimated mark is known 13.

A device is known for inputting an image of measuring marks in a field of view of a photogrammetric instrument, consisting of two small projectors,. each of which scans the image of the stamps into the left and right branch of the observation system. The projectors have the same design and consist of lenses, a turret with a set of interchangeable marks, disks with color light filters and illuminators with condensers. Image input is performed by projecting it onto a translucent diagonal one.

the face of a cube installed in the C23 pptico system.

The disadvantage of such a device is that it makes it possible to change the scale of the input image only stepwise: by mechanically changing it, turning the turret head from a change of mark. To solve a number of engineering tasks

10 photo facets it is necessary that the scale of the input image changes flat, and not in steps, moreover, in most cases it is necessary that the scale be changed according to

15 with the change of the hover point scale on the stereo model.

The purpose of the invention is to increase productivity. .

This goal is achieved by

20 that in a device for stereo devices for inputting in the field of view an additional image containing an optical element for inputting an image into an observation system, a projection system with variable magnification and a drive mechanism for it, a projection; The system is made in the form of a rectangular inverse, the lens on the axis of rotation of which rulers are fixed

Claims (2)

30 motionless on the main carriage stereocomparator. the parts at the same vertex are at a distance from each other, equal to the focal distance of the object of the projection system, and the drive mechanism is made in the form of a permanently pressed to the side edge of the roller ruler, the axis of rotation of which is fixed on the parallax carriage. The inverter drive roller is mounted on a slider, having the ability to move along a ruler mounted vertically on a parallax carriage. FIG. 1 shows a predicted device, a partial sectional view along the axis of the optical system of the projector; FIG. 2 - the same (Profile projection with a partial cut along the main plane of the lens; FIG. 3 is a diagram of the device indicating dimensions that are cyine for the construction. The device consists of an optical input element of the image in the observation system of the device, a telescopic, projection system with variable magnification and an automatic mechanism drive it. The projection system has a lens 1 and two carriages 2 and 3, having the ability with the help of sliders 4 to move along the guide 5, which is fixed by brackets b on the main carriage 7 cTepeoKONtnapaTopa parallel to the movement of the horizontal parallax 8 carriage (instrument axis X), In frame 2. Frame 9 is mounted, carrying a transparency with an additional image, and an illuminator with tson-sensor 10. In carriage 3, a projection plane 11 is installed with an additional lens 12 of a telescopic system of 1 "and On carriages at a distance f (1 Focal distance of the projection lens), respectively, from the plane of the frame 9 and the projection plane 11, the axes are fixed in the direction of the lens when the water rollers 13 and 14. The projection system is driven in the form of a rectangular inverse, which has lines 15 and 16, fastened together at a right angle, whose apex lies on the axis of rotation 17, fixedly mounted on the main carriage 7 at a distance f from the optical axis of the projector. The lateral surfaces of the rollers 13 and 14 are constant; pressed against the edges of the rulers, respectively, 15 and 16 with scissors. In addition, in the drive there is a roller 18, the axis of rotation of which is fixed on the carriage of horizontal parallax 8 at a distance from the center of rotation of the rulers: vertically, horizontally - p. The side surface of the roller 18 is constantly pressed against the edge of the ruler 16, which ensures the transmission of movement from the carriage of horizontal parallax 8 to the ruler of the inverse. The roller axis is mounted on the slider 19 of the ruler 20, which is rigidly fastened to the carriage 8, which allows the roller to change its position in the vertical direction in accordance with the value -. The pairing of the device with the carriage vsA stereocomparator part is shown in FIG. 1, 2 and 3. Three basic conditional conjugations are highlighted. 1. The device is installed in the stereocomparator part so that the optical axis of the projection system and guide 5 are parallel to the X axis of the device (in the description, axis designation corresponding to aerial photography is used), i.e. the direction of movement of the carriage parallax. 2. The axis of rotation 17 of the rulers, the guide 5 and the lens holder 1 are fixed on the main carriage of the device, and the distance between the optical axis of the lens 1 and the axis 17 of rotation of the rulers along the axis .Z (see Fig. 3) is equal to f. 3. The roller 18 of the inverter actuator is fixed on the carriage of longitudinal parallaxes with the ability to move along a line parallel to the Z axis of the device for a distance by axis 17 of rotation of the rulers and axle roller 18 along the X axis equal to the value of longitudinal parallax p (see Fig. 3). The distance along the Z axis between the axis of rotation of the rulers and the axis of the roller is set individually for each stereo pair (by moving the roller and fixing it in different positions) from the condition that it is 2 (where B is the basis of the photograph and m is the denominator of the scale of the input image ). The device works in the following way. When stereoscopic pointing the measuring mark to an arbitrary point A (X, Y, Z), the horizontal parallax screw shifts the parallax carriage 8 relative to the main carriage 7 by the value p, and with it the roller 18 by this same value. This causes rotation of the ruler 16, whereby the roller 14 is set at a distance b. itp: (see FIG. 3). The rotation of the ruler 16, in turn, causes the ruler 15 rigidly connected to it to rotate, which sets the roller 13 at a distance a from the main plane of the lens 1. At the same time, if the cassette 9 has a slide , the scale of the image of which is m, then in the plane of the projection 11 the OHO is projected on a scale of M m 7 where V is the increase in the projection system. As is known, the magnification of the projected system is equal to V "-5, and since the distance from the rollers 13 and 14 to the cassette with the image to the projection plane is equal to f, then. . bi f-1. . t "N Substituting the values of a and b into the last expression, get f,. Consequently, the scale in the projection plane and. ,, t-B B p-1 P1 As you know, the scale of any point on a photograph is. Those. the scale of the projected image and the point of guidance are equal. A device for two in the field of view of a stereopribor of an additional image in a variable scale makes it possible to create marks with a smooth and varying scale, which turn out to be useful in most stereo photographic instruments, for example, a stektometr, a topo map. technology, etc. The ability to automatically rescale the additional image in accordance with the scale of the point of guidance provided by the device allows you to create custom marks for evaluation or direct measurement of objects on the model line. Such a brand, for example, is necessary for a device for determining the particle size distribution, since it increases its productivity by several times. In addition, the device allows the second combined image to be inserted into the stereo model, representing a photo image with decrypted contours (in geological mapping), a photo image obtained in a different part of the spectrum, etc. Claim 1. A device for stereo devices for inputting an additional image in a field of view, comprising an optical element for introducing an image into a supervisory observation system, a projection system with variable magnification and a drive mechanism thereof, in order to increase labor productivity by ensuring a constant equality of the scales of the observation point in the stereo model and the input image, the projection system is made in the form of a rectangular inverse, the lens and axis of the indicator are fixedly fixed on the main carriage stereocompatible part on the same vertical distance from the other, equal to the focal distance of the projection system lens, and the drive mechanism is permanently pressed to the side edge of the roller ruler, the axis of rotation of which is fixed on the carriage parallax. 2. The device according to p. 1, characterized in that the actuator drive roller is mounted on a slider having the ability to move along a ruler mounted vertically on a parallax carriage. Sources of information taken into account in the examination 1. USSR author's certificate 481767, cl. G 01 C 11/00, 04/10/73. 2. Description and instructions for the operation of the Stekometer National Enterprise Zeiss GDR, 1961 (prototype). 16 11 S 12 gh / a / l i / hl ., 1G