SU1610464A1 - Scanning device - Google Patents

Abstract

The invention relates to optical devices for deflecting a light beam from an object and is used to swing the secondary mirrors of an orbiting telescope in the study of infrared radiation sources. The purpose of the invention is to expand the functionality of the scanning device and increase its accuracy. The scanning device contains a substrate 2 with a reflecting surface 1 mounted on movable supports with the possibility of swinging about its axis, a fixed support 20, magnetoelectric propellers 10 and 11 installed in a plane perpendicular to the axis of swing, and consisting of permanent magnetic magnets, and coils with windings included in the working gaps of the 15 magnetic circuits and attached to the substrate. In the base 8 there are grooves that coincide with the working gaps of the magnetic circuits. The base 8 is mounted on the fixed support 20 so that it can rotate in the plane of the reflecting surface, a movable support, magnetic cores, displacement and fixation units cooperating with the fixed support 20 and the contacts of the scanning plane position board are mounted on it, and the windings are provided with protrusions 17 interacting with the displacement nodes 24 and 25. The transfer unit contains a spring-loaded rod with a groove in contact with the winding protrusion 17; the opposite end of the rod has a beveled surface that interacts with the hole and a fixed support, and the fixing unit contains a cup in which a spring-loaded ball is installed, which interacts with the fixing holes of the fixed support and the contacts of the board. 1 hp f-ly, 11 ill.

Description

AND

3

T

coils with windings included in the working gaps of the 15 magnetic circuits and attached to the substrate. In the base 8 there are grooves that coincide with the working gaps of the magnetic circuits. The base 8 is mounted on a fixed support 20 with possible rotation in the plane of the reflecting surface, on it a movable support is fixed, magnetic conductors, displacement and fixation units interacting with the fixed one. the support 20 and the contacts of the board of the position of the scanning plane, a.

the windings are provided with protrusions 17 interacting with the movement nodes 24 and 25. The movement node comprises

A spring-loaded rod with a groove in contact with the protrusion 17 of the winding, the opposite end of the rod has a beveled surface that interacts with the holes of the fixed support, and the fixing unit contains a cup in which a spring-loaded ball is installed that interacts with the fixing holes of the fixed support and the contacts of the board. 1 hp f-ly, 11 ill.

The invention relates to optical devices for deflecting a light beam from an object and is used to tilt secondary mirrors of an orbital heplescope when examining sources of infrared radiation. The aim of the invention is to expand the scanning range and increase accuracy.

Figure 1 shows a scanning device; figure 2 - section GG on fig.Z; on fig.Z - section aa in figure 1, figure 4 - section on. 3, the first intermediate position} in FIG. 5 is the same, the second intermediate position in FIG. 6, the section B-B in FIG. 3, the first intermediate position, on. 7 - the same,. in a second intermediate position, in FIG. 8 is a section through the AND-FIG. 2, FIG. 9 is a section K — K in FIG. 2, FIG. 10 - section DD in FIG. 3, in FIG. 11 is a cross section of LL in FIG.

The scanning device (Fig. 1) contains a reflecting surface 1, made on the substrate 2, mounted on movable supports 3 and 4, defining a swing axis 0-0. The movable support 3 and 4 consists of an axis 5 with a needle 6 ,. interacting with pressure 7, fixed in substrate 2. Needle 6 and trunnion 7 are made of precious material with high abrasion resistance. Axis 5 is installed in the mold 8 with the possibility of movement relative to its axis and secured with nuts 9. The device contains two magnetoelectric propellers 10 and 11 installed in a plane perpendicular to the movable support (axis 0-0) and equidistant from the vertical axis of the reflecting surface 1. Each The propeller consists of magnetic cores 12 with permanent magnets 13 fixed on base 8 (Fig. 2) and coils with windings 14 mounted on substrate 2. The windings 14 enter the working gaps 15 of magnetic cores 12. At the base 8 there are slots 16, coinciding with the working clearances 15. The winding 14 is provided with a protrusion 17 and the possibility of passage in the groove 16 (FIG. 3-5).

The base B has a protrusion 18 in which the holes 19 are made, and in the fixed support 20 a groove 21. The balls 22 are installed simultaneously in the holes 19, the groove 21 and are locked with a sleeve 23 (Fig. 3, 11) so that the base 8 has the ability free rotation about an axis coinciding with the central axis of the reflecting surface 1.

Based on 8, in the lower part of the magnetic cores 12, displacement nodes 24 and 25 are fixed, each of which contains a rod 26 with a groove 27 (FIG. 4, 5), a spring 28 whose elastic force is proportional to the force developed by the manitoelectric propulsor and is regulated by spacers 29, the protrusion 17, the winding 14 is in contact with the groove 27 of the rod 26, which is installed without the possibility of rotation around its axis and has the possibility of vertical movement (Fig. 3). The rod 26 has a woven surface 30, Surface 3

five

displacement nodes 24 and 25 are mirrored relative to each other.

On the base 8, the fixing units are fixed in isolation (Figs. 2, 8, 9) each of which contains a cup 31 in which the ball 32 is installed with the possibility of vertical movement, a spring 33, the elastic force of which is regulated by gaskets 34. Adjustment of the fixing units in height is carried out by gaskets 35

In support 2.0, a scanning plane position 36 is installed with conductors and contacts 37 coinciding with locking holes 38 and 39, the distance to which determines the step of changing the position of the scanning plane - angular (Fig. 3). Holes are made in the fixed support 20 40 arranged to interact with the beveled surfaces 30 of the rod of the nodes 24 and

25, and fixing holes 38 and 39, which are arranged to interact with the balls of the 32 fixation nodes (Figs. 1, 8-10). The movement unit 24 is mounted so that the beveled surface 30 of the rod 26 can interact with the face of the hole 40, and the surface 30 of the rod

26, the displacement unit 25 is shifted by a pitch — ° C — relative to the face of the opening 40. One node is installed so that the ball 32 contacts with the holes 38 and the contacts 37 (Fig. 8), and the ball 32 of the second fixation unit is located between the holes 39 ( 9)

The proposed design allows one to obtain the necessary step of changing the position of the scanning plane — an angle of rotation — by adding fixing units and rows of fixing holes. The coils can be made with two windings 14 for duplication or to simplify the device control program — one winding works for scanning, the other for changing the position of the scanning plane.

The device works as follows.

The reflecting surface 1 is set to the zero position, and the telescope is directed to the object under study. A coil current is applied to the coils with the windings 14 of the motors 10 and 11. They interact with magnetically.

104646;

wires 12, are drawn into the working gaps 15 and deflect the reflecting surface 1 relative to the axis. 0-0, which is guaranteed to be fixed with needles 6, which reduces the axis beating and friction to zero. The distance h (Fig. 13) from the swing axis 0-0 to the surface 1 is minimal, which additionally increases the swing accuracy. When surface 1 approaches the extreme position at the angle CP, the elastic force of the spring 28 counteracts the further inclination of the surface 1. In addition to the elastic force of the spring 28, the sharpness of the extreme positions is achieved due to the precise timing of the instantaneous switching of the control current supply from the coil 14 of the driver 10 20 on the coil 14 of the driver 11, which eliminates the vibrations of the surface 1. The angle tf and the rate of deflection of the surface 1 is controlled by the magnitude of the current and the time of its action. When 25 is scanned within the angle Cf, the rod 26 of the displacement nodes 24 and 25 oscillates slightly in the vertical direction, does not interact with the edges of the holes 40, and the fixing unit 30 (Fig. 8) reliably fixes the base 8 relative to the fixed support 20, ensuring the accuracy of the position of the plane scanning, for example the plane X-X (Fig. 10). The ball 32 of the fixing unit 2 contacts with the contacts 37 of the board 36 and closes the circuit defining the position of the scanning plane. To change the position of the scanning plane, for example, to the YY plane at an angle of about (figure 10), a pulsed current is supplied to the coil with the winding 14 of the driver 10, which, interacting with the magnetic cores 12, is significantly drawn into the working gaps. 15 and the grooves 16, deforming the spring 28 (Fig. 4). The protrusion 17 of the flange} runs with the groove 27 and pushes the rod 26 vertically downwards. The beveled surface 30 of the node 24, interacting with the 0 face of the hole 40, rotates the base 8 relative to the support 20 around an axis coinciding with the central axis of the surface 1. The ball 32 of the fixing unit is out of contact with the hole 38, contact 37 and is placed between the hole 38, the ball 32 of the second fixation unit drops into the holes 39 and closes the circuit with pin 37, determining the new position

the scanning plane, the YY plane, and the surface 30 of the node 25 is moved by an angle (xi and is provided with the possibility of its interaction with the face i of the hole 40 (the difference in FIG. 4 and Fig.6). After the end of the pulse current, the spring 28 returns the rod 26 to the original position (FIG. 5). Further change in the position of the | Q bone of the scanning bone is performed by applying a pulse current to the coil 14 of the mover 11, the surface 30 of the node 25 similarly rotates the base in the same direction by another angle (FIG. 7).

Thus, alternately applying a pulse to the coils 14 of the propellers 10 and 11, you can change the position of the shtoch bone scan 2Q within 360, the contact of the protrusion 17 with the groove 27 ensures the stability of the working gaps 15, eliminates jamming of the rods 26, and therefore 25 ness of movers 10 and 11,

Claims (2)

1. Scanning device containing a substrate with a reflective surface mounted on a movable support with the possibility of swinging about an axis, a fixed support, magnetoelectric propellers mounted in a plane perpendicular to the axis of the swing and made of magneto / LJ 2 / -I wires with permanent magnets and coils with windings included in the gaps of the magnetic cores, differing from the fact that, in order to expand the scanning range and improve accuracy, it is additionally / provided with a base with grooves, while the base and magnetic cores are installed so that the gaps of the magnetic cores coincide with the grooves of the base, while the base is installed with the possibility of rotation in a plane parallel to the reflecting surface, and a movable support is fixed on it, the magnetic cores, additionally inserted nodes are moved and the fixings interacting with the fixed support and the contacts of the already inserted states of the scanning plane position, and the windings are made with protrusions interacting with the displacement nodes. I 2. The device according to claim 1, so that the displacement assembly is made in the form of a spring-loaded rod with a groove in which the protrusions of the winding are placed, one end of the rod is made with a beveled surface that interacts with a fixed support placed in its hole, and the fixing unit is made in the form of a glass in which a spring-loaded ball is installed, which interacts with a fixed support through the holes and contacts of the board. F (2. / S-ff Phage. one FIG. Z 6-5 26 FIG. eight Fie.9 4c 38 39 21 Compiled by N.Goncharenko Editor O.Spesyvykh Tehred M.Hodanich Order 3738 Circulation 455 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Raushsk nab., Moscow, 1-35, 113035 Production and Publishing Combine Patent, Uzhgorod, Gagarin Street, 101 20 FIG. ten FIG. eleven Proofreader M.Samborsk Subscription