SU60162A1 - Compass target - Google Patents

Description

According to the invention, a sighting device for a compass is provided, provided with a prism with spherical surfaces, used simultaneously as three loops for: pa pas to each other and lochalized at infinity; images of the compass rose, level bubble, and sight mark of the brand. This is obtained by passing beams of light into the pupil of the eye, simultaneously coming from images superimposed by means of a prism. The distinction proposed by the Hoix sight device known is that the upper rear rib of the prism is rounded off with a small radius to allow simultaneous sighting on the compass and on the sun, in order to observe the glare in the form of a vertical bar, reflected by the indicated rounded surface of the prism.

The second distinctive feature of the sighting device 5: is the construction of a reflective surface of the prism in the form of a roof with a turning image;; and a card reader, moreover, to obtain a sighting light, the mark is the surface of the prism, 1 opposed to silver plated; spheres are also silver plated: and. Equipped in the plane of symmetry: a prism with a scratch-giving feature.

A third feature of the sighting device is the use of a mirror as an astigmator, which is equipped with a number of drawn parallel patterns.

FIG. 1 drew a sight device to the compass and was discharged in the side view, and the compass itself in a longitudinal section, in fig. 2 shows a prism R enlarged: for the sake of clarity, FIG. 3 - the same when determining the course angle of an observable object; in fig. 4 is shown in an exaggerated form ;, roundness along the small pa THycv of the upper rear edge of the prism.

The device is mounted on the azimuth; 1nim circle 14 superimposed over the glass 15 on the housing of the mirror. By means of the hinge 10, a pedestal 3 is fixed to the peg. I, at the end of which, on the hinge 9, is holding the prism 2 fixed. In this prism, face 3 represents the bottom magnifying glass, face 4 - the first magnifying glass, gdai 5:}; 1 о; with iiepx.ijp ma;) coy k, kakonets. rib 6, iLT; i in. Zagrhgleinuk) ko: ;;; and; m:) ;; di di su qi; 1K 1Lrichesku () ponerhiiocTb, 1; re ;; iaziachasl1un; luuHrossny eyes.

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with MapKoii at 15il, e mrOrez ;; .1l ;: 1L (presse;; Ichsko1; 1o ;; serhiost ;:

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Prism 2 v; 1:; lls;: a K}: ;; iico6) a.iyelois iMpiGpa l varnish, lokoyvoyvall-,

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la d) l; e |) hh / ka h |} els part of the limit; ns to h sozosoks (.1 vi. ka 20 s l () m; hlich hl upperl. and

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And 10 leads this image to the horizon of the subject being referred to 20, counting the desired bearing to 16 directly on the subject 20.

Due to the presence of a roof instead of a single reflecting face, the inscriptions of the divisions in the image 17 of the card grow in the same direction as the bearing. Due to the equality of the visible value of 1 ° of the card is equal to I ° in nature. Therefore, when the direction finder is rotated with the prism around the axis (which is equivalent to the rotation of the card 16 together with the object 20 relative to the prism. We are 2 at the same angle to the same side), the counting under the object almost does not change, only the touch point the image of the edge of the card with the horizon moves.

Raz landmarks ka pelengato | and almost does not affect the readout, the diametrical plane of the direction finder, which coincides with the plane of symmetry of the prism, is sufficient to combine with the BepTnKaviOM of the subject subject only roughly roughly. For this, it is sufficient to make an image 17 of the card 16 by eye parallel to the Gorkaoit around the observed point.

To measure the heading angle counted not by the card, but by the azimuthal circle 14 against the trait on the pelegator 1, an accurate alignment of the direction on subject 20 with the direction of a certain collimation plane or line permanently associated with the prism 2 is needed. This is the collimator formed of silver part of the lower magnifier acting concave spherical mirror, and a transparent line on the upper face in the focal plane of this mirror. Having lowered a little eyes, the observer sees above the card an infinitely distant top mark 5, which is an image of this feature in a spherical mirror and both faces of the roof. The stroke of one of the beams is shown in FIG. 1 dotted line 22. This brand 5 and combined with Dedom ieto 20.

During the day, mark 5, generally speaking, appears as a light line on a darker background of space, darkened by a box, and at night - a light line on a dark background of reflection of the bottom lighting in a silvered top face.

The sight of the sun and stars at low altitudes is produced, as is the sight of earthly objects, the image of the card is lifted up to them by a slight turn of the prism around the horizontal axis. But now the angular value of the degree divisions on the image of the card is equal to 1 arc of a large circle of the celestial sphere in nature, will no longer be equal to I-almucantarate luminary, because this latter is equal to P of the arc of a large circle. Therefore, before counting it is necessary, although approximately, to sighting the light of collimator; -. or to orient the direction finder so that the count made by the star was equal to the count by the collimator mark. The latter is achieved by two approximations almost unconsciously and instantly.

Ex: The adverse lighting conditions of the top brand 5 in this case, you can use another}. the collimator present here, formed by a vertical magnifying glass 1, is a vertical (for the observer) feature near its focal plane.

When the sun is high, for its sighting it serves (instead of the solar black mirror of a conventional direction finder) a cylindrical surface 6 of a rounded edge between the top and back (along the rays) prism surfaces. This “cylinder” acts as an infinite set of flat mirrors, p-pendulous to the plane of symmetry of pr-csm and forming all possible angles from 0 to 90 (or at least 45) with the horizon. The eye, placed near the "cylinder, with a properly oriented direction finder, sees a light vertical

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In the language and natural direction, the direction of the line of sight on the subject of dividing the map of the CARDS is visible here, while in the Thomson direction finder, either the dividing of the card is visible in the mirror image or the correction of the lines of vision is oblique and its reflection is observed instead of the object itself.

The subject matter of the invention.

Claims (3)

1. A vision device for a compass, equipped with a prism with spherical surfaces, used simultaneously as three loops, to obtain images superimposed on each other and localized at infinity: a compass card, a level bubble and a sight mark that differs in the upper rear side is rounded off by a small radius, for simultaneous visibility; ;-: on the compass and on the sun, in order to observe the glare in the form of a vertical bar, which is reflected by this roundness; on the cylinder surface of the prism. 2. A flexible device according to Claim 1, characterized in that the reflecting surface of the prism, in order to turn the image of the card reader, is made in the form of a shank, and to obtain a sighting light mark, the surface of the prism opposed to silver-plated; : spheres, silver and in the plane of the symmetry of the prism a scratched line on it. 3. In the sighting device of claim 1, use a mirror as an astigmator equipped with a series of traced parallel arches.