Programmable diffraction grating

[Detailed Description of the Invention]

The background of an invention The film layer made from a magnetic material which has the capability for the present invention to require for a programmable diffraction grating, and to support a magnetic stripe domain especially, The programmable diffraction grating possessing the means arranged at the matrix which is a means to generate rectangular DC magnetic field ingredient, and consists of a cell in which an address is possible individually, and a means to generate AC magnetic field is started. Since image processing of Like by the Fourier transform art which uses a digital computer, for example, an aerial photograph, needs the processing refined highly about this image, carrying out only . which is common knowledge from the former, The processing concerned is continued at a long period of time, so that it is irrational to a Apply sake, a computer is operated, and if it is Mustache, there is nothing. Therefore, it is desirable to make as [ process / computer operation is minimized and / in real time / an aerial photograph ]. Literature "The Ultimate ComputerB IEEE Spec-trum and the 84 - 91st page (March, 1972) should be referred to. The present invention tends to process an image by the optical processing system of real time using holograph art. On the other hand, the optical deviation system which uses the domain wall between the stripe domains of a magnetic film as a diffraction grating is indicated by Japanese Patent Application No. No. (JP,46-1640,A, U.S. Pat. No. 3752563) 8344 [ 46 to ] concerning application of these people. A means to change those for Arrangement which can rotate [ separation of an adjoining domain and ] a parallel stripe domain to the system is established. This system is used for controlling the focus of the light to which the film plane pointed by the Kerr effect thru/or a Faraday effect. The outline of an invention The present invention relates to the invention it should be considered that is an invention of improvement of the invention concerning above-mentioned Japanese Patent Application No. No. 8344 [ 46 to ], and it extends the system currently indicated by the above-mentioned patent application to the system which has two or more stripline arrays, It enables it to control the separation and those for Arrangement of a domain wall in each part of a film each and alternatively. . which enables a domain wall for this alternative control about the separation and for Arrangement to change an interval and those for Arrangement continuously in practice, and to become arbitrary shape -- domain wall arrangement in shape brings about various image-processing functions variously. [ in each part of a film ] [ of a domain wall ] Explanation of a suitable example The perspective diagram of diffraction grating 10 which materializes the present invention and which can be changed electrically is shown in Drawing 1. Lattice 10 comprises the component parts of the following mentioned from the nearer one from the planar surface. (a) ;X element stripline which comprises 1 set of stripline 13 with respectively parallel each of X, planer matrix arrays 12 of Y element, and those elements for X and the direction magnetic field generating of Y is placed on Y element stripline right-angled in piles, Right-angled X and the direction magnetic field of Y occur on the whole surface of lattice 10 by the current connected to the result X and Y element. Such an element covers a dielectric substrate and may be formed by the method of well-known chemical etching from a double raincoat (a double copper). (b) Mutual intersection matrix 14 which comprises multilayer printing circuit board structure in order to combine each selection line of X and Y to X, certain related X of the matrix array of Y element, and Y element. (C) Optical mirror 16 by which the deposit was carried out to the 1 side of film 18 nearest to a stripline. (d) The above-mentioned E . J . For example, it seems that it is discussed in the patent application by Torok etc., stripe domain film layer 18. film layer 18 of a YIG crystal covers the whole planar size of lattice 10, and is a continuous layer rather. And each portion of the is connected with X and Y element which array 12 piled up, respectively, in order that separation and the direction of the fact and a stripe domain may form the optical cell of the place changed by giving change in the strength and direction of DC magnetic field of [ on a film ]. The hysteresis in film layer 18 is eliminated by AC Tackle (tickle) magnetic field which makes a right angle to the field of lattice 10 simultaneously, and is turned. Typical optical cell 20 formed of film 26 which is a portion of film layer 18 of Drawing 1 of the place especially combined with X element 22 and Y element 24 which were combined in piles inductively, single X element 22 to pile up, and Y element 24 is especially shown in Drawing 2. Furthermore, in order to make Drawing 2 generate the direction magnetic field Hx related, respectively of X and the direction magnetic field HY of Y, sources 23 and 25 of a current signal of the place which is X and Y selection current source which are combined with X element 22 and Y element 24 are shown in it. Magnetic fields Hx and HY are inductively combined with film 26. Magnetic field HR which produced on a plane of film 26 as composition of the polarity of rectangular vector magnetic fields HX and HY and a vector of a size is generated. Thus, the plane of film 26 can be made to generate the direction of all requests, and DC synthetic magnetic field HR of a size by changing continuously the polarity of vector magnetic fields HX and HY, and a size. Parallel 22a, 22 by which X element 22 and Y element 24 are combined, four parallel lines 22e and 22f, for example, lines, b 22c It is illustrated as 22d is comprised. In order to eliminate the hysteresis of film 26 while having given magnetic fields HX and HY, source 28 of right-angled or perpendicular AC Tackle magnetic field HT. is shown to the plane of film 26. The ideal timing diagram of AC magnetic field HT supplied right-angled to the plane of DC transverse magnetic fields HX and HY supplied simultaneously and film 26 is especially shown in Drawing 3 in the plane of film 26. Magnetic fields Hx and HY whose each may be the possible polarity of all versatility and a size may be started and ended almost simultaneous as shown. It is AC Tackle magnetic field HT of the amplitude decreased on the other hand at the start time of magnetic fields HX and HY, and it accepts and happens. Vector 4/a to which Drawing 4 related It is an outline figure of lattice 40 which comprises XY array of film 26a-26i in which the related domain wall direction shown by 4/i is formed. this vector 41a-41i in each of film 26a-26i related, respectively is shown as a direction attachment To be thing along the almost continuous curve of domain walls 42-4344 and 45 in which the place separated by changing wall separation adjoins. In order to take size into consideration, it is each film 26a-26i, adjoining line 4 2-4 meeting successive line 42-45 related with change of wall separation of each film 26a-26i shown by changing separation between five by a diagram -- direction attachment Being done -- it is explained as what has a single domain wall. Since film 26 exists continuously on lattice 10 and the distance to which X and Y element are limited is separated from film 26, it is film 26a. Each synthetic magnetic field HR of 26i is accustomed on the plane of film 26. Thus, each domain wall direction of film 26a-26i, It is determined according to each polarity and size of selection current Ix combined with X and Y element from which it is influenced by the direction of contiguity film 26a-26i, and separation between walls changes, which generated the shape of the continuous curvilinear domain wall substantially, and to which these all related, respectively, and ■Y... the -- refer to the 2 figure. Reference of especially Drawing 5 especially shows the outline figure about an example with the domain wall which may exist between domain walls 43.44 of Drawing 4 about film 26e. Magnetization vectors 50 and 51 relevant to [ film 26e is shown in Drawing 5 as what has three another domain walls 43a among domain walls 43 and 44, b, and c, and ] it in each domain between adjoining domain walls It is shown as what has 52 and 53. film 26e which has domain wall directions 43 and 45 of Drawing 4 is shown in Drawing 5 between these domain walls -- Listen -- or [ many ] -- being certain -- it is -- it should be admitted that it can have a small number of domain walls -- it comes out. And it is shown in order [ with the changing wall separation and the direction ] to almost show the domain wall of a continuous curve. Drawing 6 is a block diagram of programmable diffraction grating system 60, and it makes the substantially continuous curvilinear domain wall which carries out the stripe domain film layer of lattice 62 and from which separation between walls and a direction change produce in it. In order to connect alternatively the size, polar X, Y selection Magazine IX, and ±IY which were chosen as each of the optical cell which controller 64 is the method discussed in detail in Drawing 2nd [ the ] and 3, and is formed in XY array in lattice 62, The system which controls X selection 66, Y selection 68, and source 70 of AC and to. Apply, in the planer stripe domain film formed of XY array of the film of an optical cell In order to form arrangement of the domain wall of the form of all requests, the direction of each synthetic DC magnetic field HR, a size, and polarity are alternatively determined in the plane of each film element of an optical cell, respectively. The system of Drawing 6 is the arrangement for which selection current is simultaneously used in all the optical cells and which changes easily, or the film of firm retentivity may be used and it may be performed by one of the methods of the arrangement that selection current is used for each optical cell one by one again not changing. Previous E J As discussed by the patent application by Torok etc., film layer 18 which can magnetize a YIG crystal has the magnetization arranged in many stripe domains, for example. Film 18 may be a thing of a Kerr effect type [ thing / Faraday effect type ]. However, as explained in detail in Drawing 5, it must have magnetizing properties which make the magnetization direction arrange in a parallel stripe domain substantially [ plurality ]. The adjoining stripe domains are a domain wall, for example, 43C, and an angle which is separated as be alike and is on the plane of a film, respectively, It has each magnetization which aligned in a counter direction, the upper, and the bottom, and those average magnetization aligns at a film plane, as shown by magnetization vectors 52 and 53. A stripe domain wall direction and separation are obtained by being controlled alternatively by supplying right-angled AC Tackle magnetic field HT which arises simultaneously to suitable polarity, synthetic DC magnetic field HR of a size, and the domain wall of a film. Thus, wall separation decreases the magnetic vector on the film in which a size is decreasing, i.e., by supplying synthetic DC magnetic field HR in parallel. However, if a size increases, wall separation will increase. On the contrary, wall separation increases temporarily that they are reverse parallel to the magnetic vector and counter direction on the film in which synthetic DC magnetic field HR is decreasing in a size. However, if a size increases, wall separation will decrease. And the direction of synthetic DC magnetic field HR determines the direction of a domain wall in the plane of a film like the above-mentioned. When these relations are used, the system of Drawing 6 may be used in order to attain many domain wall arrangement in lattice 62. . which has intention of the lattice of the present invention being used in an optical processing system as mentioned above -- thus Various diffraction grating arrangement of arrangement with changing various wall separation and domain walls of the almost continuous curve of a direction may be used in order to form real time processing of an aerial photo or a radar photograph. the -- reference of 7a-7f figure shows some typical lattice arrangement for carrying out specific optical and processing work, as shown with the related figure. The present invention is carried out as the following. It is (1) and a programmable diffraction grating and comprises the following elements. The array of an optical cell and each optical cell contain the following. To the inside of a planer stripe domain film element and the above-mentioned film element, eye Ahead -- the selecting means for generating a direction with variable Was done, laws, and synthetic DC magnetic field of a size, In order to generate arrangement of the domain wall of the almost continuous curve of wall separation which changes into the means for combining AC magnetic field with the array of the above-mentioned optical cell inductively, and the film element of the array of the above-mentioned optical cell, The control means which controls the above-mentioned selecting means at each plane of the above-mentioned film element in order [ of each synthetic DC magnetic field ] to determine especially a direction and a size. The lattice of (1) of the place with which (2) and the above-mentioned AC magnetic field are oriented almost perpendicularly to the plane of the above-mentioned film element. The lattice of (1) of the place with which lattice 1 of (1) of the place where (3) and the above-mentioned AC magnetic field have sufficient size to eliminate the hysteresis of the above-mentioned film element while giving the above-mentioned synthetic DC magnetic field first (4), and the above-mentioned AC magnetic field are oriented almost perpendicularly to the above-mentioned domain wall. The lattice of (1) of the place whose film element of the array of (5) and the above-mentioned optical cell is each portion of a continuous layer. It is (6) and a programmable diffraction grating and comprises the following elements. The planer matrix array of the direction magnetic field of X which produces X element; the planer matrix array of the direction magnetic field of Y which produces Y element; it is a pair although it acts on each above-mentioned X and both Y element arranged by X and the direction magnetic field arrangement of Y which act mutually; In order to combine alternatively the polarity selectable to one and Y selection current of amplitude as which the above-mentioned X element was chosen, Y current source selecting means alternatively combined with each of the above-mentioned Y element; separated thing which X and Y element which act on the above-mentioned mutual one in order to form a plurality of common planer stripe domain film elements and XY optical cell separated and which was inductively combined only with one pair; in the thing X plane inductively combined in the stripe domain film element -- eye Ahead -- laws -- Was done -- in order to generate a variable direction and synthetic DC magnetic field HR of a size, In order to combine simultaneously X and Y selection current as which the polarity chosen as above one of the pair of X and Y element which act on the above-mentioned mutual one selected, and amplitude were chosen The current control means which controls simultaneously above-mentioned X and Y current source selecting means; in order to generate the arrangement as which almost continuous variable stripe domain wall separation was chosen in a plurality of above-mentioned common planer stripe domain film elements, An AC magnetic field means to collaborate with synthetic DC magnetic field HR which was inductively combined with the above-mentioned XY optical cell, and was related. (Six) lattices of the place with which (7) and the above-mentioned AC magnetic field are oriented almost perpendicularly to the plane of the above-mentioned film element. (Six) lattices of the place which is each portion of a layer with (8) and the above-mentioned continuous film element. The film of the magnetic material which can support (9) magnetic stripe domain, A means to generate AC magnetic field on the film, and a means separately arranged in the shape of [ of the cell in which an address is possible ] a matrix to generate DC magnetic field in the film plane are included, The programmable diffraction grating in which the intensity and the direction of the DC magnetic field can generate an image transmission study lattice which was made to change in the portion from which the film differs, and is different by it. (10) What is a programmable diffraction grating of the above-mentioned (9) statement, and contains one magnetic layer by which the above-mentioned film continued and followed a plurality of cells in which the DC magnetic field is generated. (11) The thing which is a programmable diffraction grating the above (9) or given in (10) and by which the above-mentioned AC magnetic field is substantially given to the film plane perpendicularly.

[Brief Description of the Drawings]

Drawing 1 is a perspective diagram of the programmable diffraction grating of the present invention. Drawing 2 illustrates the single optical cell of XY matrix array of the optical cell of the lattice of Drawing 1. Drawings 3 are a waveform of the typical drive magnetic field used by the present invention, and a figure of the timing. Drawing 4 is a figure of XY array of nine optical cells of the lattice of Drawing 1 with a typical domain wall and a magnetization vector direction. Drawing 5 is a figure of the single film element of Drawing 4 which illustrates in detail the domain wall and magnetization direction which were shown roughly in Drawing 4. Drawing 6 is a block diagram of the programmable diffraction grating which materializes the present invention. the -- 7a-7f figure is a figure of the form of various lattices which may be obtained by the lattice of the present invention. Numerals explanation, 10: A lattice, 12: A planer matrix array, 13: Stripline, 14: Mutual Intersection Matrix, 16: Optical Mirror, 18 : Film, 20: An optical cell, a 22:X element, 23, 25: The source of a current signal, a 24:Y element, 26: A film, 40: A lattice, 41: A vector, 42~45: A domain wall, 50~53: A magnetization vector, 62: A lattice, 64 : a controller, a 66:X selection, a 68:Y selection, the source of 70:AC.