SU1355865A1 - Device for remote measurement of angles - Google Patents

Description

The invention relates to measurement technology and can be used to measure the angular dimensions of objects, their angles of inclination relative to the reference plane in mechanical engineering, instrument making, construction, and geodesy.

The purpose of the invention is to increase the measurement accuracy by equalizing the strengths of the two imaging devices of the object to be compared in the field of view, as well as due to the fact that the device eliminates the division of the visual field into two parts, each of which contains only one object.

Fig. 1 shows the optical layout of the device i in Fig. 2, a direct-view prism with construction dimensions; in fig. 3 is the same, left side view in FIG. 4; structure of the device; in fig. 5-8 - field of view of the device when measuring various parameters

objects. I

The device contains a plane-parallel plate 1, installed at the device inlet, with a mark 2 applied to its center in the form of a crosshair optical prism 3, from a direct view, made in the form of a cube prism with a radiant coating 4 applied to its reflecting faces,

On the input face of the prism 3 there is a mark 5 in the form of a circle (Figures 1–3). The device also contains a level 6, a mirror 7 for transferring the image of level 6 in the field of view of the operator, a magnifying glass 8 removably mounted in its frame in a rotary eye sleeve 9 of the housing 10, screwed out of two parts: mobile and fixed. On the fixed part of the housing 10 there is a reading index 11 on the movable there is a handle 12 with a scale of 13,

Figures 5-8 indicate the positions of the images 14-17 of the monitored elements of the measurement object visible in the field of view of the device.

The device works as follows.

At zero setting of scale 13, index 11 directs the device to some element of the object, for example, at the top of the image of the measured angle (FIG. 5), aligning the sight marks 2 and 5 with the top of the measured angle 14, In the field of view of the prism 3, the operator

observes two images of the measured angle at the same time: one (14) is a straight line formed by a light beam passing through a prism 3 as a plane-parallel plate, and a luminous coating 4 without reflection, the other (15) is mirrored, formed by a light beam,

passed through a prism 3, like a reflective prism-cube, with a reflection of the light beam from the beam-splitting coating 4 (see also FIG. 2). The position of the sighting line in space can be fixed by level 6. When measuring the true angles, for example ((FIGS. 5 and 6), its top is aligned with the sight line of the device (with marks 2 and 5),

At the same time, by turning the entire body 10 of the device, a relatively fixed eye bush 9 combines one of the sides of the measured angle belonging to its direct (14) and mirrored

(15) pictures as shown in fig. 5. Next, turning the prism 3 around the sighting line of the device, marked with marks 2 and 5, combine two images 14 and 15 of the measured angle

oL, as shown in FIG. 6, and on a scale of 13, the magnitude of the angle about is read, which is equal to half the angle of rotation of the prism 3. When measuring the relative angles B and Y (with respect to

the umbrella), the position of the line of sight is fixed in space by a spherical level 6, whose image is transferred in the field of view of the device with the help of a mirror 7 (FIG. 5-8). The optical scheme of the proposed device works in parallel light beams together with the human eye and can also be embedded in various optical systems like known devices.

Similarly, using the proposed device, it is possible to measure the inclinations of various parts with respect to the horizon, as shown in Figs. 7 and 8, while aligning the images 16 and 17 of the edge of the object being monitored, and the orientation of the device according to level 6.

Claims (1)

Formula of the invention A device for remote measurement of angles, comprising a housing, moving and fixed assemblies with nano13558 indexes on them, an optical prism of direct vision with an odd number of reflecting faces and with a mark applied on the entrance surface of the prism, mounted with the ability to rotate 5 NINs about an axis passing through the center of the mark, together with the moving unit, and a plane-parallel plate with the applied on it is a stamp installed in such a way that the center of the mark is O 5865 at 5 o The axis of rotation of the prism, characterized in that, in order to improve the accuracy of measurement, the prism is made in the form of a prism cube with a translucent coating on its dividing face and is installed in such a way that the axis of rotation is located in the plane of the dividing edge and perpendicular to the edges of the my prism corners. F i.H Vue.2  H 5 (Rie. " FI.5 W fi .b fie 7 -77 Editor A. Ogar Order 5767 / 37Tirage, 677 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production-polygraphic enterprise, F.Uzhgorod, Proektna str., 4 Compiled by M.Shemchukov Tehred I. Veres Corrector M. Sharoshi