SU1087948A1 - Device for light beam angular modulation - Google Patents

Abstract

DEVICE FOR angular modulation of a light beam, comprising a magnetic core with a membrane zamzhayuschey magnetic magnetic circuit consisting of RS housing with disposed therein with a shift of 90 by four cores on which coils are wound, the generator modulating waveforms electrically coupled to faeosdvigayuschim block, wherein each output electrically connected to the corresponding coil, as well as a mirror rigidly mounted on the membrane, characterized in that, in order to increase the modulation amplitude without increasing control current, the cores are perpendicular to the membrane, and in the case there are grooves, a number of which is a multiple of eight, arranged in a row, the number of which is a multiple of four, each pair of grooves located on opposite sides of the body at a depth equal to one third of the case diameter, and a pair grooves each (O th row and shifted by 90 ° relative to the previous row.

Description

The invention relates to fine mechanics, and specifically to devices for implementing precise microdisplacements of objects, and can be used as suspension, adjustment and modulation units for optical elements of optical electronic devices (laser spectrometers, etc.). A device for adjusting and modulating dopes in opto-electronic devices is known, which consists of a holder with a mirror rigidly connected to a membrane that closes the magnetic circuit of the magnetic circuit. The drive housing is a magnetic conduit. Inside the drive case there is a coil consisting of two sections - a control coil and a shifter. The axial movement of the object occurs due to the elastic deformation of the membrane when current is passed through the coil. In order to modulate the luminous flux, it is necessary to connect an electromagnetic converter to the generator of modulating oscillations C. The disadvantages of this device are due to the impossibility of modulating by two coordinates. The closest to the invention to the technical essence and the achieved result is a device for the angular modulation of the light beam, which contains a magnetic core with a membrane closing the magnetic circuit of the magnetowire, consisting of a body with four cores arranged inside it with a shift by 90 four cores, on which are wound coils , a modulating oscillator, electrically connected to a phase-shifting unit, each output of which is electrically connected to a corresponding coil, as well as a mirror rigidly mounted on the membrane the wound. This device allows scanning in two-coordinate two. Its disadvantages include a small modulation amplitude without increasing the control current. This is achieved by the fact that in a device for the angular smoothing of a light beam containing a magnetic circuit with a membrane that closes the magnetic circuit of the magnetic circuit, consisting of a body with four cores in it shifted by 90 four cores, which are oscillating, oscillating, electrically connected to the phase shifter, each output. which is electrically connected to the corresponding roller, as well as a mirror rigidly fixed on the membrane, the cores are located perpendicular to the membrane, and the housing has slots that are a multiple of eight, which are arranged in four rows, with each pair of slots Pusa at a depth equal to one-third the diameter of the case, and a pair of grooves of each p -. yes shifted by 90 relative to the previous p yes. FIG. 1 shows a block diagram of the device; in fig. 2 embodiment of the device; in fig. 3 shows section A-A in FIG. 2. The device comprises a modulating mirror 1, rigidly connected with the membrane 2, coils 3,1-ЗЛ, electrically connected with the phase shifter A, containing diode switches 5.1-5.4 and phase shifter 6, the input of which is connected to the generator 7 of modulating oscillations. The membrane 2 closes the magnetic circuit consisting of the drive body 8 and the cores 9.1-9.4 of the coils 3.1-3.4, through the air gap 10 between the membrane 2 and the cores 9.1-9.4. The modulating oscillations are carried out with respect to the X and Y axes, with coils 3.2–3.3 operating during modulation with respect to the X axis, and coils 3.1– and 3.4 with modulation relative to the Y axis. The operation of the modulating device for each of the coordinates is the same. Along the X axis, the modulation is performed as follows. The modulating voltage from the generator 7 is centered on diode switches 5.2 and 5.3. The diode switch 5.2 transmits onto the coil 3.2 only the positive half-wave of modulating surges and the membrane 2 is attracted to the core 9.2 of the coil 3.3. The diode to} shch 5.3 transmits only the tricky half-wave of the modulating aperture on coil 3.3. As a result, the membrane 2 and, accordingly, the mirror 1 make angular modulating olebany. As a result, the necessity of the initial displacement of the membrane 2 is eliminated, which leads to stabilization J1. O.GL o. ka „PCK: Z:“ J; “MS. - are required to provide the same deflection F developed in this device, where eC is the angle between P- and F. "In addition, in the prototype it is necessary for Yao to spend an effort for g: ---- T, :: g- --- - - “W gas memorials, unu FP (the central part where the mirror is located is considered a6coj wHo as a solid, since usually the diameter and thickness of the mirror is greater than 1: 6). To implement simultaneous modulation in two coordinates, a phase shifter 6 is present in the device, ...... the Y-axis codebing. Since a significant part of the force developed by the drive is expended to overcome the rigidity of the membrane, the drive body has slots that are a multiple of eight located in four rows, each pair being 484 irr (i :;; a :: tr- -ri ± s; oGl; w1.% Gyyr. pv., ::: g of the body diameter, and a pair of grooves of each p yes shifted by 90 relative to the grooves of the previous row. The presence of grooves in the housing allows for through: -Eg-EZ ™ As you know, corrugations This surface has a significantly "nyuyu. -" "ivionv nenypP zhVKOSTKOST-tfAu" u "r" ... stiffness than cylindrical. DFT T ° Vb2V "f; V according to coordinate X, and with the help of grooves 12.1, U 1 and Two of the same grooves, located on the opposite side of the body. nrtnvt a% inn A ".s. eight slots (two in each row) make it possible to create one corrugation for each two coordinates. This device allows you to scan by two coordinates with a larger amplitude; former control current.

 f f

/

.

  "G" g If

fi.r

/3.2

Claims (1)

DEVICE FOR ANGULAR MODULATION OF THE LIGHT BEAM, containing a magnetic circuit with a membrane that closes the magnetic circuit of the magnetic circuit, consisting of a housing with four cores located inside it with a shift of ** **, and a coil, a modulating oscillation generator, electrically connected to a phase-shifting unit, wound each the output of which is electrically connected to the corresponding coil, as well as a mirror rigidly mounted on the membrane, characterized in that, in order to increase the modulation amplitude without increasing the current boards, cores are perpendicular to the membrane, and grooves are made in the housing, the number of which is a multiple of eight, arranged in rows, the number of which is a multiple of four, with each pair of grooves placed on opposite sides of the housing at a depth equal to a third of the diameter of the housing, and the pair of grooves of each row are offset 90 ^e relative to the previous row. > a