RU2174725C1 - Method for manufacturing optical-conducting device for image transmission (alternatives) - Google Patents

Abstract

FIELD: manufacture of large composite seamless matrix screens. SUBSTANCE: method provides for building optical conducting device around matrix system of tightly packed single layers for tightly packed optical conductors. For producing single layer use is made of two specially developed molds which are, essentially, straps with identical light conductors made in the from of suitably oriented rectangular-section teeth. Molds supplement each other. Their lap jointing enables production of single layer of tightly packed and adequately oriented light conductors dispensing with part-by-part assembly and eliminating light leakage loss that may be caused by non-rectangular section of light conductors. EFFECT: facilitated correction of image within composite display screen; reduced manufacturing cost. 10 cl, 4 dwg

Description

 The invention relates to the field of transmission of optical images using optical fibers and can be used in the manufacture of special focons with square sections of its constituent fibers and, mainly, in the manufacture of seamless composite matrix screens of large sizes to obtain high-quality images.

 Known tricks - devices for fiber transmission of an optical image with an increase in scale [1]. At present, focusses use hexagonal or circular cross-section optical fibers developed in industry. In the manufacture of focons, a correspondingly tight hexagonal packing is used, given the preservation of the arrangement of individual optical fibers in the bundle at the input and output for correct image transmission. The transfer of images from screens of displays consisting of densely packed square pixels using focons is ineffective due to the difference in the types of packaging of display elements and focon.

 To transfer images from display screens, fiber devices with rectangular packaging [2], [3] are made, having the same type of packaging with a screen, the pixels of which always have a rectangular packaging. Devices manufactured in this way provide more efficient image transmission.

 Currently, in composite panel displays, the size of the image fragment on the panel screen is smaller than the overall dimensions of the panel by the size of the sealing joints of the panel. Therefore, in the image on the composite display there are gaps in the form of a grid of dark orthogonal stripes. To eliminate these gaps in the image on the surface of the display, consisting of separate panels, use either the effect of shifting the image fragments to the center of the screen [3], or the effect of increasing the size of the image fragment on the screen of each panel to the overall dimensions of the panel [2]. The output planes of the light guide devices made according to the solutions [2] and [3] are joined without visible gaps, which ensures a continuous image on the common output plane of the device. Manufacturing techniques for these devices are complex. Fiber optic devices using the effect of shifting image fragments to the center of the screen [3] are not identical, because the magnitude and direction of the shift of the fragments of the image for different panels are not the same. In addition, they require the element-wise assembly of a large number of light guide fibers in each monolayer, from which the entire device is assembled. The principle of increasing the size of the image fragment to the overall dimensions of the panel [2] allows the use of identical light-guiding devices to adjust the image on the composite display, since the increase in image fragments is the same for all panels. However, the manufacturing method of such a device uses a complex and time-consuming piecewise assembly of the entire device.

 As a prototype for a method of manufacturing an optical device for image transmission, a solution [3] was selected that coincides with the invention according to the greatest number of common features, namely, the creation of a monolayer of densely packed optical fibers and the subsequent assembly of the device in the form of a matrix system of densely packed monolayers.

The disadvantages of this technology are:
1) light losses due to the impossibility of organizing dense rectangular packing of optical fibers of non-rectangular cross section, since currently there is no technology for the manufacture of fibers of rectangular cross section;
2) light loss due to the use of fastener sheets and material for gluing optical fibers during assembly of the device;
3) the manufacturing technology of the known device, as already indicated, is complicated, because requires element-wise assembly of a large number of light guide fibers in a monolayer;
4) an optical fiber guide device made by the known method [3], to eliminate the seams in the composite image, uses the effect of shifting the image fragments to the center of the display. Therefore, the fiber-optic devices for panels in different parts of the display are not identical, which greatly complicates both the correction of the image within the screen of the composite display and the manufacturing technology of the corresponding device.

 The invention is aimed at eliminating these drawbacks, and its technical result is the manufacture of an optical light guide device for transmitting an image with reduced light loss and a simplified manufacturing technology, as well as simplifying image adjustment on a composite display due to the possibility of using identical light guide devices.

где k₁ - коэффициент линейного увеличения устройства в направлении вдоль монослоя,
A - длина монослоя на входе устройства,
h - толщина устройства,
L - число световодов в монослое,
в этой форме сечения зубцов в плоскости монослоя являются равнобедренными трапециями с углом при основании 90^o - φ₀/2, а сечения зубцов в плоскости, перпендикулярной плоскости монослоя и параллельной оси зубца, имеют форму равнобедренной трапеции с углом при основании 90^o - ψ₀/2, оси зубцов другой формы отклонены от продольной оси центрального зубца или зазора, совпадающей с перпендикуляром к продольной оси перемычки, наружу от центра перемычки на величину угла φ_l , сечения зубцов этой формы в плоскости монослоя являются равнобедренными трапециями с углом при основании 90^o + φ₀ /2, а сечения зубцов в плоскости, перпендикулярной плоскости монослоя и параллельной оси зубца, имеют форму равнобедренной трапеции с углом при основании 90^o + ψ₀/2, при этом в одной из форм центральным является зубец, а в другой - зазор, затем наносят на поверхность форм светоотражающий слой, соединяют формы внакладку так, что зубцы одной формы попадают в зазоры другой с образованием монослоя плотно упакованных световодов и для получения матричной системы в виде шестигранника, две параллельные грани которого в виде прямоугольников со сторонами длиной A и B, k₁A и k₂B являются соответственно входной и выходной гранями устройства, с расстоянием h между ними и боковыми гранями в виде равнобедренных трапеций, собирают монослои так, что плоскости монослоев отклонены от плоскости центрального монослоя матричной системы наружу на угол
ψ_m = mψ₀
где m - номер монослоя, отсчитываемый от центрального монослоя в обе стороны, при этом для центрального монослоя m = 0,

где k₂ - коэффициент линейного увеличения устройства в направлении, перпендикулярном монослою;
М - число монослоев в устройстве;
B - суммарная толщина монослоев на входе устройства,
и для получения матричной системы требуемых размеров после сборки монослоев части форм, включающие перемычки, отсекают по плоскостям, перпендикулярным оси центрального световода центрального монослоя, и полируют входную грань устройства.This result is achieved by the fact that in the method of manufacturing an optical light guide device for image transmission, which consists in creating a monolayer of densely packed optical fibers and then assembling the device in the form of a matrix system of densely packed monolayers, two shapes are preliminarily made of the light guide material in the form of jumpers with identical optical fibers in the form teeth with a rectangular cross section in a plane perpendicular to the longitudinal axis of the tooth, located with identical gaps equal in shape e and largest tooth, wherein the longitudinal axes of all the teeth of each form are located in the plane of the monolayer, or discarded in a form of a longitudinal central axis of the tooth or gap, which coincides with the perpendicular to the longitudinal axis of the bridge, inwardly towards the center of the jumpers on the angle
φ ₁ = lφ ₀
where l is the number of the tooth or gap, measured from the central tooth or gap in both directions, while for the central tooth or gap l = 0,

where k ₁ - the coefficient of linear increase of the device in the direction along the monolayer,
A is the length of the monolayer at the input of the device,
h is the thickness of the device,
L is the number of optical fibers in a monolayer,
in the form of sections of teeth in the plane of the monolayer are isosceles trapezoids with the base angle 90 ^o - φ _0/2, and the cross sections of teeth in a plane perpendicular to the plane of the monolayer and parallel tooth axis, have the shape of an isosceles trapezoid with the base angle 90 ^o - ψ ₀ / 2, the axis of another form of teeth are inclined from the longitudinal axis of the central tooth or gap, which coincides with the perpendicular to the longitudinal axis of the jumper, the jumper outward from the center at the angle φ _l, sectional teeth that form a monolayer plane are isosceles tra etsiyami with the base angle 90 ^o + φ _0/2, and the teeth section in a plane perpendicular to the plane of the monolayer and parallel tooth axis, have the shape of an isosceles trapezoid with the base angle 90 ^o + ψ _0/2, wherein in a form of a central is a tooth, and in the other a gap, then a reflective layer is applied to the surface of the forms, the forms are overlapped so that the teeth of one form fall into the gaps of the other with the formation of a monolayer of densely packed optical fibers and to obtain a matrix system in the form of a hexagon, two parallel faces of which in the form of rectangles with sides of length A and B, k ₁ A and k ₂ B are the input and output faces of the device, respectively, with a distance h between them and the side faces in the form of isosceles trapezoid, monolayers are assembled so that the planes of the monolayers are deflected from the plane of the central monolayer matrix system outward at an angle
ψ _m = mψ ₀
where m is the monolayer number, counted from the central monolayer in both directions, while for the central monolayer m = 0,

where k ₂ is the coefficient of linear increase of the device in the direction perpendicular to the monolayer;
M is the number of monolayers in the device;
B is the total thickness of the monolayers at the input of the device,
and to obtain a matrix system of the required size after assembling the monolayers, parts of the forms, including jumpers, are cut off on planes perpendicular to the axis of the central fiber of the central monolayer, and the input face of the device is polished.

 For the manufacture of forms of light-conducting material, casting or hot pressing technologies are used. Molds for casting or hot pressing are created in accordance with the required design of the light guide device.

 In some cases, it may be preferable to use cold pressing from sheet plastic, which speeds up and reduces the cost of manufacturing the device. In such circumstances, a variant of the method is used, according to which rectangles are made from the light guide material of the teeth in the plane perpendicular to the plane of the monolayer and parallel to the axis of the tooth, and spacers are installed between the light guide fibers to assemble the required design of the light guide device.

 The image transmitters manufactured by this method (its variants) are presented in FIG. 1, 2, 3, 4.

FIG. 1 - a monolayer of optical fibers according to claim 1 of the method:
a) section in the plane of the monolayer;
b) a cross section perpendicular to the plane of the monolayer.

 FIG. 2 - assembly of the device (section perpendicular to the planes of monolayers).

FIG. 3 - a monolayer of optical fibers according to claim 6 of the method:
c) section in the plane of a monolayer;
d) a cross section perpendicular to the plane of the monolayer.

 FIG. 4 - assembly of the device (section perpendicular to the planes of the monolayer).

In the drawings:
1 - form with a central tooth,
2 - form with a Central clearance,
3 - longitudinal axis of the jumper forms,
4 - the central tooth of one shape and the gap of another shape,
5 - the longitudinal axis of the tooth of one shape and the gap of another shape,
6 - cut lines of parts of the molds after assembly of the device from monolayers,
7 - the plane of the monolayer,
8 - a monolayer of optical fibers,
9 - spacer,
A is the side of the input face of the device along the plane of the monolayer,
k ₁ A is the side of the output face of the device along the plane of the monolayer,
B is the side of the input face of the device perpendicular to the plane of the monolayer,
k ₂ B is the side of the output face of the device perpendicular to the plane of the monolayer,
h is the thickness of the device,
φ _l - the angle of inclination of the longitudinal axis of the l-tooth with respect to the perpendicular to the longitudinal axis of the jumper,
ψ _m is the angle in the transverse plane of the monolayer section between the plane of the m-monolayer and the plane of the central monolayer.

 The essence of the method of manufacturing a light guide device for image transmission is the creation of identical monolayers of densely packed optical fibers, the assembly of which is greatly simplified, since the specially designed shapes used to create a monolayer are complementary to each other and together form a monolayer of tightly packed optical fibers with the required orientation of the optical fibers without element-wise assembly. Orientation is set when developing forms.

 The method according to the invention is implemented as follows.

Угол ψ_m задается порядковым номером монослоя, отсчитываемым от центрального монослоя в обе стороны и формой сечения зубца в плоскости, перпендикулярной плоскости монослоя и параллельной оси зубца, а именно равнобедренной трапецией с углом при основании 90^o- ψ₀/2, где

Затем с помощью этих пресс-форм изготавливают формы 1 и 2 из прозрачного пластика, например литьем или горячей прессовкой. Наносят на наружную поверхность форм светоотражающие слои, например магнетронным напылением алюминия или серебра. Соединяют формы внакладку так, что зубцы, например 4, формы 1 попадают в зазоры формы 2 с образованием монослоя 8 плотно упакованных световодов. Затем создают матричную систему из склеенных отдельных монослоев 8. Для склеивания можно использовать любой клей, пригодный для пластика. Толщина склейки должна быть минимальной для организации плотной упаковки матрицы из монослоев. Для получения матрицы требуемых размеров отсекают по плоскостям, перпендикулярным оси центрального световода центрального монослоя части форм, включающие перемычки. Линии среза 6 указаны на чертежах 1, 2, 3, 4. Для уменьшения светорассеяния полируют входную грань устройства.Molds 1 and 2 are made according to claim 1 of the method, for example, using appropriate molds, the design of which takes into account the shape of individual optical fibers, made in the form of teeth, and their orientation with respect to the center of the desired optical fiber device. The mold design can specify both the angle of deviation φ _{l of the} individual fiber from the axis of the central tooth in the plane of the monolayer, and the angle of deviation ψ _{m of the} plane of the monolayer 7 from the plane of the central monolayer when assembling the matrix system. The angle φ _l given a sequence number of the central fiber or tooth gap, counted in both sides of the tooth and form a monolayer sectional plane, namely the isosceles trapezoid with the base angle 90 ^o - φ _0/2, where

Angle ψ _m is given a sequence number of a monolayer, measured from the center to both sides of a monolayer and the sectional shape of the tooth in a plane perpendicular to the plane of the monolayer and parallel to the axis of the tooth, namely the isosceles trapezoid with the base angle 90 ^o - ψ _0/2, where

Then, using these molds, molds 1 and 2 are made of transparent plastic, for example by molding or by hot pressing. Reflective layers are applied to the outer surface of the molds, for example by magnetron sputtering of aluminum or silver. The forms are lined up so that the teeth, for example 4, of form 1 fall into the gaps of form 2 with the formation of a monolayer of 8 tightly packed optical fibers. Then create a matrix system of glued individual monolayers 8. For bonding, you can use any glue suitable for plastic. Gluing thickness should be minimal to organize tight packing of a matrix of monolayers. To obtain the matrix of the required size, cut off along the planes perpendicular to the axis of the central fiber of the central fiber of the central monolayer, including the jumpers. Cut lines 6 are shown in drawings 1, 2, 3, 4. To reduce light scattering, polish the input face of the device.

The resulting matrix has the form of a hexagon, the input and output faces of which are parallel, and the distance between them is the thickness of the device h. The size of the input face with sides A and B is equal to the size of the screen of the composite display panel, and the size of the output face with sides k ₁ A and k ₂ B is equal to the overall size of the panel.

 In some cases, it is important to simplify the design of forms, even at the cost of some complication of the subsequent assembly in order to accelerate and reduce the cost of the method of manufacturing the device.

In this case, according to the method variant according to claim 6, the mold design defines only one orientation angle of the fiber, namely, the deviation angle φ _{l of the} longitudinal axis of the fiber in the plane of the monolayer from the axis of the central tooth or the gap of the monolayer coinciding with the perpendicular to the longitudinal axis of the bridge. The second orientation angle ψ _m is set during assembly by installing spacers between monolayers whose dimensions and positions are determined by the angle ψ ₀ . Spacers are made, for example, of plastic fibers. The sections of the teeth in the plane perpendicular to the plane of the monolayer are rectangular, which allows the use of material in the form of sheet plastic and, accordingly, cheaper manufacturing technology, for example, cold pressing, for manufacturing molds. Cold pressing significantly speeds up the manufacturing process of the device.

 The optical fibers of the device create a radiation pattern with the center deflected to the axis of the fiber and the inhomogeneity of the glow along the angle due to the eigenmodes of the fiber.

 To improve the directivity pattern of individual fibers and the entire device as a whole, its output surface is profiled according to both versions of the method - p. 2, 3, 4, 5, 7, 8, 9, 10.

 The matting of the output surface according to paragraphs 2, 7 of the method is the simplest case of profiling. It smooths out the inhomogeneities of the glow along the angle, but is not optimal, since it does not change the center of the radiation pattern.

The relief from the system of strokes of a triangular profile according to paragraphs 3, 8 of the method compensates for the deviation of the center of the radiation pattern due to the inclination of the optical fibers. The calculation of the angles of the profile triangles is made from the condition for compensating the deviation angles of individual fibers φ _l and ψ _m from the axis of the device, which coincides with the longitudinal axis of the central tooth or gap in the central monolayer.

 In some cases, to increase the brightness in a given range of viewing angles, it is advisable to narrow the radiation pattern, for example, in the vertical plane of observation. To do this, on the output face of the device according to paragraphs 4, 9 of the method, a relief is formed in the form of a raster of cylindrical lenses, the apertures of which are the apertures of the optical fibers of the device, while the generators of the cylindrical lenses are horizontal and their radii of curvature are R = qh, where 0.1 <q <10.

 All types of these reliefs - matting, a triangular profile, a cylindrical raster - can be made separately on a film or plate of translucent material, which is applied, for example by gluing, on a polished output surface according to clauses 5, 10 of the method.

 Thus, the invention makes it easier and cheaper to manufacture a light guide device for transmitting an image with reduced light loss. It can be effectively used to create composite displays with a seamless, high-quality image.

Sources of information
1. RF patent N 2082189, class. MKI 6 G 02 B 6/04 dated 1/30/95.

 2. Application for a patent of the Russian Federation N 200010399/28, cl. MKI 6 H 01 J 17/49 of 02.21.2000, the decision to grant a patent of 23.10.2000

 3. US patent N 5465315, CL. MKI 6 G 02 B 6/08, publ. 12/02/1992

Claims (10)

1. A method of manufacturing an optical light guide device for image transmission, which consists in creating a monolayer of densely packed optical fibers and the subsequent assembly of the device in the form of a matrix system of tightly packed monolayers, characterized in that two forms are made of light guide material in the form of jumpers with identical optical fibers in the form of teeth with a rectangular cross section in a plane perpendicular to the longitudinal axis of the tooth, located with identical gaps equal in shape and size to the tooth, with the longitudinal the axes of all the teeth of each shape are located in the plane of the monolayer and deviated in one of the forms from the longitudinal axis of the central tooth or gap, which coincides with the perpendicular to the longitudinal axis of the bridge, inward to the center of the bridge by the angle
φ ₁ = φ ₀
where l is the number of the tooth or gap, measured from the central tooth or gap in both directions, while for the central tooth or gap l = 0;

where k _l is the coefficient of linear increase of the device in the direction along the monolayer;
A is the length of the side of the input face of the device along the plane of the monolayer;
h is the thickness of the device;
L is the number of optical fibers in a monolayer,
in this embodiment the cross section in the plane of the monolayer of teeth are isosceles trapezoids with the base angle of 90 ^o -φ _0/2, and the teeth section in a plane perpendicular to the plane of the monolayer and parallel tooth axis, have the shape of an isosceles trapezium with the angle at the ratio of 90 ^o - ψ ₀ / 2, the axes of the teeth of another shape deviate from the longitudinal axis of the central tooth or gap coinciding with the perpendicular to the longitudinal axis of the jumper, outward from the center of the jumper by the angle φ ₁ , the sections of the teeth of this form in the plane of the monolayer are isosceles apetsiyami with the base angle 90 ^o + φ _0/2, and the teeth section in a plane perpendicular to the plane of the monolayer and parallel tooth axis, have the shape of an isosceles trapezoid with the base angle 90 ^o + ψ _0/2, wherein in a form of a central is a tooth, and in the other is a gap, then a reflective layer is applied to the surface of the forms, the forms are overlapped so that the teeth of one form fall into the gaps of the other with the formation of a monolayer of densely packed optical fibers and to obtain a matrix system in the form of a hexagon, two parallel faces of which th as rectangles with sides of length A and B, k ₁ A and k ₂ B are respectively the input and output facets of the device with h the distance between them and the lateral faces in the form of isosceles trapezoids, collect monolayers such that the plane monolayers deflected from the plane of the central monolayer matrix system outward at an angle
ψ _m = mψ ₀
where m is the monolayer number, counted from the central monolayer in both directions, while for the central monolayer m = 0;

where k ₂ is the coefficient of linear increase of the device in the direction perpendicular to the monolayer;
M is the number of monolayers in the device;
B is the length of the side of the input face of the device perpendicular to the plane of the monolayer;
and to obtain a matrix system of the required size after assembling the monolayers, parts of the forms, including jumpers, are cut off on planes perpendicular to the axis of the central fiber of the central monolayer, and the input face of the device is polished.  2. The method according to claim 1, characterized in that the output face of the device is matted. 3. The method according to p. 1, characterized in that on the output face of the device form a relief of a system of strokes of a triangular profile located along and across the monolayers, while for strokes located across the monolayers with cross sections in the plane of the monolayer, one of the sides of the profile the triangle is parallel to the axis of the fiber, and the other is at an angle to the axis of the fiber

where φ ₁ is the angle of inclination of the fiber in the plane of each monolayer to the Central fiber of the corresponding monolayer;
n is the refractive index of the material of the fiber,
and for strokes located along a monolayer with cross sections in a plane perpendicular to the plane of the monolayer, one of the sides of the profile triangle is parallel to the fiber axis and the other is at an angle to the fiber axis

where ψ _m is the angle of inclination of the plane of the monolayer to the plane of the central monolayer of the matrix system.  4. The method according to claim 1, characterized in that the output face of the device forms a relief in the form of a raster of convex cylindrical lenses, the apertures of which are the apertures of the optical fibers of the device, while the cylindrical lenses are parallel to one of the sides of the output face of the device, and the radii of their curvature R = qh, where 0.1 <q <10.  5. The method according to any one of claims 1 to 4, characterized by polishing the output face of the device and applying a film or plate with a relief on the output surface. 6. A method of manufacturing an optical light guide device for image transmission, which consists in creating a monolayer of tightly packed optical fibers and the subsequent assembly of the device in the form of a matrix system of tightly packed monolayers, characterized in that two forms are made of the light guide material in the form of jumpers with identical waveguides in the form of teeth with a rectangular section in a plane perpendicular to the plane of the monolayer, located with identical gaps equal in shape and size to the tooth, while longitudinal e axes of all the teeth of each form are located in the plane of the monolayer, or discarded in a form of a longitudinal central axis of the tooth or gap, which coincides with the perpendicular to the longitudinal axis of the bridge, inwardly towards the center of the jumpers on the angle
φ ₁ = lφ ₀ ,
where l is the number of the tooth or gap, counted from the central tooth or gap in both directions, while for the central tooth l = 0;

where k _l is the coefficient of linear increase of the device in the direction along the monolayer;
A is the length of the monolayer at the input of the device;
h is the thickness of the device;
L is the number of optical fibers in a monolayer,
in this embodiment the cross section in the plane of the monolayer of teeth are isosceles trapezoids with the base angle of 90 ^o -φ _0/2, and the teeth section in a plane perpendicular to the plane of the monolayer and parallel tooth axis, have the shape of rectangles, the axes of the other forms of teeth are inclined from the longitudinal axis of the central tooth or gap, which coincides with the perpendicular to the longitudinal axis of the jumper, the jumper outward from the center at the angle φ _1, the cross sections of teeth that form a monolayer plane are isosceles trapezoids with the base angle 90 ^o + φ _0/2, the sections of the teeth in the plane perpendicular to the plane of the monolayer and parallel to the axis of the tooth have the shape of rectangles, while in one of the forms the tooth is central, and in the other, there is a gap, then a reflective layer is applied to the surface of the forms, the forms are overlapped so that the teeth of the same form fall gaps in the other to form a monolayer of tightly packed optical fibers and to obtain a matrix system in the form of hexahedron, two parallel faces of which are in the form of rectangles with sides of length a and B, a and k ₁ k ₂ B are sootvets venno input and output devices faces with h the distance between them and the lateral faces in the form of isosceles trapezoids, placed between the monolayers spacers, size and position determined by the angle ψ _0, collect monolayers such that the plane monolayers are inclined from the central plane of the monolayer matrix system outwards at angle
ψ _m = mψ ₀ ,
where m is the monolayer number, counted from the central monolayer in both directions, while for the central monolayer m = 0;

where k ₂ is the coefficient of linear increase of the device in the direction perpendicular to the monolayer;
M is the number of monolayers in the device,
B is the total thickness of the monolayers at the input of the device,
and fill the gaps between the monolayers with a binder material, and to obtain the matrix system of the required size after assembling the monolayers, parts of the molds, including jumpers, are cut off on planes perpendicular to the axis of the central fiber of the central monolayer, and the input face of the device is polished.  7. The method according to claim 6, characterized in that the output face of the device is matted. 8. The method according to p. 6, characterized in that on the output face of the device form a relief from a system of strokes of a triangular profile located along and across the monolayers, while for strokes located across the monolayers with cross sections in the plane of the monolayer, one of the sides of the profile the triangle is parallel to the axis of the fiber, and the other is at an angle to the axis of the fiber

where φ ₁ is the angle of inclination of the fiber in the plane of each monolayer to the Central fiber of the corresponding monolayer;
n is the refractive index of the material of the fiber,
and for strokes located along a monolayer with cross sections in a plane perpendicular to the plane of the monolayer, one of the sides of the profile triangle is parallel to the fiber axis and the other is at an angle to the fiber axis

where ψ _m is the angle of inclination of the plane of the monolayer to the plane of the central monolayer of the matrix system.  9. The method according to claim 6, characterized in that on the output face of the device a relief is formed in the form of a raster of convex cylindrical lenses, the apertures of which are the apertures of the optical fibers of the device, while the generatrices of the cylindrical lenses are parallel to one of the sides of the output face of the device, and the radii of their curvature R = gh, where 0.1 <g <10.  10. The method according to any one of claims 6 to 9, characterized in that the output face of the device is polished and a film or plate with a relief is applied to it on the output surface.

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