CN114755755A - Optical fiber panel and preparation method thereof, and curtain for projection and preparation method thereof - Google Patents
Optical fiber panel and preparation method thereof, and curtain for projection and preparation method thereof Download PDFInfo
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- CN114755755A CN114755755A CN202210438159.6A CN202210438159A CN114755755A CN 114755755 A CN114755755 A CN 114755755A CN 202210438159 A CN202210438159 A CN 202210438159A CN 114755755 A CN114755755 A CN 114755755A
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- optical fiber
- multifilament
- fiber panel
- screen
- rod
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000003825 pressing Methods 0.000 claims abstract description 35
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 238000005498 polishing Methods 0.000 claims abstract description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052709 silver Inorganic materials 0.000 claims abstract description 11
- 239000004332 silver Substances 0.000 claims abstract description 11
- 239000003822 epoxy resin Substances 0.000 claims abstract description 10
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000011162 core material Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
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- 238000005520 cutting process Methods 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002519 antifouling agent Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 238000005491 wire drawing Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- 239000010985 leather Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 5
- NGBNXJUWQPLNGM-UHFFFAOYSA-N silver;azane Chemical compound N.[Ag+] NGBNXJUWQPLNGM-UHFFFAOYSA-N 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 238000007738 vacuum evaporation Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 4
- 238000009501 film coating Methods 0.000 claims description 2
- 239000007888 film coating Substances 0.000 claims description 2
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- 238000005253 cladding Methods 0.000 description 13
- 239000011324 bead Substances 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses an optical fiber panel and a preparation method thereof, a projection curtain and a preparation method thereof. And the transmittance between the single image transmission optical fibers is reduced to form a novel optical fiber panel capable of carrying out total reflection. The specific preparation method comprises the steps of drawing monofilaments, arranging rods, drawing multifilaments, arranging screens, pressing the screens, slicing, polishing one surface, finely grinding the other surface and the like, so that the optical fiber panel with lower transmittance and larger size is prepared. The polished surface of the optical fiber panel is subjected to silver mirror reaction or vacuum coating to prepare a total reflection interface, and the surface of the fine grinding surface is coated with a layer of transparent medium such as epoxy resin. Under the action of a projection light source, light rays enter from the finish grinding surface, are totally reflected in each optical fiber, and completely reflect all the light rays to the surface of the optical fiber panel to form an image with sharp contrast, so that the gain and the contrast of projection imaging are greatly improved.
Description
Technical Field
The invention belongs to the field of optical projection, and particularly relates to an optical fiber panel and a preparation method thereof, a curtain for projection and a preparation method thereof.
Background
The existing projection curtain equipment mainly comprises a white plastic curtain, a gray plastic curtain, a glass bead curtain, a metal curtain, a white glass fiber curtain, a gray glass fiber curtain, a black grid curtain and a Fresnel light-resistant curtain according to the types of the curtains. Wherein the curtain is moulded to white, grey mould curtain, glass pearl curtain, metal curtain, the fine curtain of white glass and the fine curtain of grey glass are all not anti light curtain, can receive the interference of ambient light very easily under to the non-dark surrounds, lose the image contrast, form the condition of a slice white.
Although the white plastic projection curtain has low preparation cost, soft reflection to light and uneasy fatigue when being watched for a long time, the white plastic projection curtain has low gain and no light resistance, and the watching effect is easily influenced by ambient light. High contrast projection screens, i.e., gray screens, are an improvement over white screens and are typically made using gray screen stock. The gray screen can absorb more ambient light than the white screen, so that the black position on the screen can be maintained under the condition of stronger ambient light, and the black-white contrast on the screen is increased. However, if the screen is viewed under natural light, the screen surface will be slightly gray and have no light-resistant effect. The glass bead projection curtain is a typical regression-type reflection-type projection curtain, although the gain is high (1.5-30), the glass beads cover the surface of the base cloth, so that hard objects cannot be touched, otherwise, scratches are easily caused, and the maintenance is not facilitated. Metal projection screens are generally obtained by applying a layer of metallic coating on the basis of a woven or warp fabric. The metal coating is generally aluminum powder coating or silver powder coating, has higher cost and is not suitable for wide curtains. The metal projection screen has high gain but small viewing angle and also has no light resistance effect. The high-definition glass fiber projection screen mostly uses alkali-free glass fiber cloth as base cloth, and because the alkali-free glass fiber cloth is small in stress deformation and excellent in flatness, the overall brightness of the surface of the projection screen is consistent, but the gain is low.
In the prior art, only the black grid curtain and the Fresnel light resisting curtain belong to the category of light resisting curtains, but in actual use, the black grid curtain has low gain, and the problems of side resistance and weak interference capability of the ambient light below the black grid curtain exist. The Fresnel light-resistant curtain has good light-resistant capability and gain, but needs to be integrally designed, is a whole hard screen designed for a specific size, is complex to install, is high in price and is limited by the structural characteristics and actual cost of the Fresnel light-resistant curtain, and is difficult to realize a large-size or extra-large-size light-resistant curtain.
The optical fiber panel is formed by combining tens of millions of monofilament fibers, each fiber independently transmits one pixel, and the fibers have good optical insulation, and are not influenced by surrounding fibers when transmitting light. And the regular arrangement of the fibers ensures that the relative positions of the independent pixels are unchanged, so that the image is kept unchanged, and the image transmission function is realized. At present, the main products include a planar optical fiber panel, an optical fiber image inverter, a light cone and the like, and are widely applied to various cathode ray tubes, camera tubes, CCD coupling and other instruments and equipment needing image transmission.
Although the optical fiber panel has a light transmission function, it cannot perform total reflection in the opposite direction of incidence of light, and thus cannot be applied to the field of projection imaging. And the existing optical fiber panel is required to have higher transmittance, and in order to ensure the overall high transmittance of the optical fiber panel, white filaments are mostly filled among single fibers, so that the dark images cannot be well absorbed in the incident light regression and total reflection process, and the contrast of the prepared total reflection optical fiber panel is lower.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an optical fiber panel and a preparation method thereof, a projection screen and a preparation method thereof.
In order to solve the problems of the prior art, the invention discloses an optical fiber panel, which comprises: the polishing device comprises an optical fiber layer, wherein a polishing surface is arranged on one surface of the optical fiber layer, a total reflection layer is arranged on the polishing surface, the optical fiber layer is used for refracting light to the total reflection layer, and the total reflection layer is used for reflecting the light to the surface of an optical fiber panel through the optical fiber layer.
Furthermore, a fine grinding surface is arranged on the other surface of the optical fiber layer; the refining surface is used to remove chromatic dispersion in the reflected light. And the fine grinding surface is provided with a gain improving layer which is used for improving the gain of the optical fiber panel.
Further, the optical fiber layer is formed by arranging a plurality of multifilament rods, each multifilament rod comprises a plurality of composite tube rods, optical absorption yarns or colorless transparent yarns are fully inserted into gaps of the composite tube rods, each multifilament rod comprises a core rod, a sheath tube is arranged outside the core rod, and the refractive index of the core rod is higher than that of the sheath tube.
Further, the air conditioner is provided with a fan,
and an absorption leather material pipe is arranged outside the composite pipe rod.
Further, the air conditioner is provided with a fan,
the thickness of the optical fiber panel is 0.1mm-100 mm.
Accordingly, a method of making a fiber optic faceplate comprises:
sleeving a sheath material pipe on the outer surface of a core material rod to form a set of composite pipe rod, wherein the refractive index of the core material rod is higher than that of the sheath material pipe; putting the composite pipe rod into a wire drawing machine, heating to 810 +/-100 ℃, and drawing a single wire;
after the monofilaments are drawn, arranging a plurality of monofilaments into a multifilament rod, wherein optical absorption filaments or colorless transparent filaments are inserted into pores among the monofilaments;
placing the arranged multifilament bar into a multifilament furnace to be heated and drawn, arranging a plurality of multifilaments into a multifilament screen section, placing the multifilament screen section into a screen pressing furnace to be heated and applied with pressure, and performing screen pressing treatment on the multifilament screen section;
the multifilament screen section after the screen pressing is firstly insulated and then cooled to room temperature along with the furnace;
taking out the cooled multifilament screen section, putting the cooled multifilament screen section into a wire cutting machine, cutting the multifilament screen section into an optical fiber panel with the thickness of 0.1mm-100mm, polishing one surface of the optical fiber panel, and finely grinding the other surface of the optical fiber panel;
carrying out silver mirror reaction or film coating on the polished surface of the optical fiber panel to form a total reflection layer;
and coating a layer of epoxy resin glue on the fine grinding surface of the optical fiber panel to form a high-gain de-dispersion layer.
Further, the air conditioner is provided with a fan,
and an absorption leather material pipe is sleeved outside the composite pipe rod.
Further, the air conditioner is characterized in that,
heating the multifilament bar to 760 +/-100 ℃ in a multifilament furnace; heating the multifilament screen section to 690 +/-80 ℃ in a screen pressing furnace; and keeping the screen sections subjected to screen pressing at 650 +/-80 ℃ for 10 +/-5 h.
Further, the air conditioner is provided with a fan,
the silver mirror reaction process comprises the following steps: the polished surface of the optical fiber panel is put into a prepared 10-20% glucose clear silver ammonium solution containing 1-3% of silver nitrate and 7-15% of sodium hydroxide, and is heated in water bath until a silver mirror is formed.
Further, the air conditioner is characterized in that,
the coating process comprises the following steps: putting the polished surface of the optical fiber panel into a vacuum chamber with the pressure of 1 × 10-3Pa～1×10-6And Pa, evaporating and plating an aluminum film on the polished surface through vacuum evaporation plating, and then spraying protective paint on the surface of the aluminum film.
Correspondingly, the curtain for projection is formed by splicing a plurality of optical fiber panels.
Correspondingly, the preparation method of the curtain for projection comprises the steps of preparing the optical fiber panel by the preparation method of the optical fiber panel, and splicing a plurality of prepared optical fiber panels.
The invention has the following beneficial effects:
1. under the action of a projection light source, light rays enter from the fine grinding surface, are totally reflected in each optical fiber, and completely reflect all the light rays to the surface of the optical fiber panel to form imaging with sharp contrast, so that the gain and the contrast of projection imaging are obviously improved;
2. because the panel with high numerical aperture can make the light with larger included angle with the vertical direction of the total reflection optical fiber panel enter the total reflection micropore to form total reflection, or the energy of the formed total reflection light is lower, the influence of any other direction light source (such as light, sunlight projected from the outside of the window) with larger included angle with the vertical direction of the screen can be greatly reduced, and the prepared total reflection optical fiber panel has good light resistance;
3. the light absorbing material is sleeved outside the cladding and core composite tube rod, or the optical absorbing material is fully inserted into the pores in the rod arranging process (the area of the optical absorbing material in the optical fiber panel is enlarged), and other technical means. The optical absorption material on the outer surface of each optical fiber can not only greatly reduce the crosstalk effect between the optical fibers, but also improve the color resolution of the total reflection optical fiber panel and increase the contrast of curtain imaging.
4. The light-resistant high-gain high-contrast total reflection optical fiber panel has the advantages of consistent surface overall brightness, smooth and easily maintained surface, no light spots, firmness and durability. The surface of the glass bead powder has no problems of easy powder falling, difficult maintenance and the like caused by coating metal paint, glass beads and other substances. And the screen with any size and shape can be manufactured by splicing small total reflection optical fiber panels.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a composite pipe rod according to an embodiment of the present invention;
FIG. 3 is a schematic view of a composite pipe stick according to an embodiment of the present invention;
FIG. 4 is a schematic view of a composite pipe stick according to an embodiment of the present invention;
FIG. 5 is a schematic view of a composite pipe rod according to an embodiment of the present invention;
FIG. 6 is a schematic view of a composite pipe stick according to an embodiment of the present invention;
fig. 7 is a schematic view of a composite pipe rod according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the optical fiber panel of the present invention includes an optical fiber layer 1, wherein one side of the optical fiber layer 1 is provided with a polished surface 2, and the other side is provided with a polished surface 3; a total reflection layer 4 is arranged on the polishing surface 2, and a gain increasing layer 5 is arranged on the fine grinding surface 3;
as shown in fig. 2-7, the optical fiber layer 1 is formed by arranging a plurality of multifilament rods, each multifilament rod includes a plurality of composite tube rods, the gaps between the plurality of composite tube rods are filled with optical absorption threads 1-2 or colorless transparent threads 1-3, each multifilament rod includes a core rod 1-0, a sheath tube 1-1 is arranged outside the core rod 1-0, the refractive index of the core rod 1-0 is 1.71-2.26, and the refractive index of the sheath tube 1-1 is 1.45-1.65; the total reflection layer 4 is a technical scheme that total reflection can be prepared by a silver mirror or a coating film and the like; the gain-improving layer 5 is an epoxy resin adhesive layer or other transparent media. And the absorption leather material pipe 1-4 is arranged outside the composite pipe rod. The thickness of the optical fiber panel is 0.1mm-100 mm.
The invention is further described below with reference to specific examples:
example 1
As shown in fig. 2, a core glass rod having a high refractive index (Nd = 1.812) was coated with a cladding glass tube having a low refractive index (Nd = 1.505) to form a composite rod, and an absorbing cladding tube (black glass tube) having a low transmittance was coated with the cladding glass tube. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 800 ℃, and drawing a single wire. After the monofilaments are drawn, the drawn monofilaments are subjected to bar arrangement treatment of a certain process, so that the monofilaments are arranged into a regular hexagonal multi-filament bar, and absorbing glass filaments are fully inserted into the holes. The aligned multifilament bar was placed in a multifilament furnace and drawn while being heated to 785 ℃. The drawn multifilament having a filament diameter of 6 μm was cut into a length of 15cm, and subjected to a screen alignment treatment in a certain process to align the multifilament into a regular hexagon having a side length of 12 cm. And (4) putting the multifilament screen sections subjected to screen arranging into a screen pressing furnace, heating to 730 ℃, applying pressure, and performing screen pressing treatment on the screen sections. And (4) preserving the temperature of the screen section after the screen pressing at 705 ℃ for 10h, and cooling the screen section to room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 0.5mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished surface of the polished optical fiber panel is put into a prepared glucose (15%) clear silver ammonium solution containing 2% of silver nitrate and 10% of sodium hydroxide, and a silver mirror reaction is carried out during water bath heating to form a total reflection mirror surface, and then a layer of protective paint is sprayed on the outer surface of the total reflection mirror surface. And coating a layer of epoxy resin glue on the surface of the finish grinding surface to form the high-gain total reflection optical fiber panel without dispersed light.
Example 2
As shown in fig. 3, a core glass rod having a high refractive index (Nd = 1.813) was coated with a cladding glass tube having a low refractive index (Nd = 1.651) to form a composite rod, and an absorbing cladding tube (black glass tube) having a low transmittance was coated with the cladding glass tube. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 810 ℃, and drawing a single wire. After the monofilament is drawn, the drawn monofilament is treated in certain technological process to form quadrangular filament compounding rod with absorbing glass fiber inserted into the pores. The aligned multifilament bar was placed in a multifilament furnace and drawn while being heated to 793 ℃. The drawn multifilament having a filament diameter of 6 μm was cut into a length of 15cm, and subjected to screen alignment treatment in a certain process to align the multifilament into a square shape having a side length of 18 cm. And (4) putting the multifilament screen sections subjected to screen arrangement into a screen pressing furnace, heating to 720 ℃, applying pressure, and performing screen pressing treatment on the screen sections. And (4) preserving the heat of the screen section after the screen pressing is finished for 10 hours at 680 ℃, and then cooling the screen section to room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 0.5mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished fiber panel is placed in a vacuum chamber (1X 10)-4Pa), evaporating an aluminum film with the thickness of 100nm on the polished surface of the panel by vacuum evaporation coating (PVD), and spraying a layer of protective paint on the outer surface of the polished surface of the panel. And coating a layer of epoxy resin glue on the surface of the finish grinding surface to form the high-gain total reflection optical fiber panel without dispersed light.
Example 3
As shown in fig. 4, a core glass rod having a high refractive index (Nd = 1.768) is coated with a cladding glass tube having a low refractive index (Nd = 1.615) to form a composite rod, and an absorbing cladding tube (black glass tube) having a low transmittance is coated with the cladding glass tube. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 790 ℃, and drawing the single wire. After the drawing of the monofilaments is finished, the drawn monofilaments are subjected to bar arrangement treatment of a certain process, so that the monofilaments are arranged into a regular hexagon multi-filament bar, and colorless glass filaments are fully inserted into the holes. The aligned multifilament bar was put into a multifilament furnace and subjected to multifilament drawing while being heated to 770 ℃. The multifilament of 10 μm diameter of the drawn monofilament was cut into a multifilament of 15cm length, and the multifilament was subjected to screen alignment treatment by a certain process to align the multifilament into a regular hexagon of 10cm in side length. And (4) putting the multifilament screen sections subjected to screen arranging into a screen pressing furnace, heating to 690 ℃, applying pressure, and performing screen pressing treatment on the screen sections. And (4) keeping the temperature of the screen section after the screen pressing at 625 ℃ for 8h, and cooling the screen section to room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 1mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished surface of the polished optical fiber panel is put into a prepared glucose (15%) clear silver ammonium solution containing 2% of silver nitrate and 10% of sodium hydroxide, and a silver mirror reaction is carried out during water bath heating to form a total reflection mirror surface, and then a layer of protective paint is sprayed on the outer surface of the total reflection mirror surface. And coating a layer of epoxy resin glue on the surface of the fine grinding surface to form the high-gain total-reflection optical fiber panel without dispersion light.
Example 4
As shown in fig. 5, a core glass rod with a high refractive index (Nd = 1.791) is sleeved with a cladding glass tube with a low refractive index (Nd = 1.502) to form a composite tube rod, and an absorbing cladding tube (black glass tube) with a low transmittance is sleeved on the outer surface of the core glass rod. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 800 ℃, and drawing a single wire. After the monofilament is drawn, the drawn monofilament is treated in certain technological process to form quadrangular filament compounding rod with colorless transparent glass fiber inserted into the pores. The aligned multifilament bar was placed in a multifilament furnace and drawn while being heated to 795 ℃. The multifilament of 10 μm diameter of the drawn monofilament was cut into a multifilament of 15cm length, and the multifilament was subjected to screen alignment treatment by a certain process to align the multifilament into a square shape of 15cm in length. Putting the multifilament screen section after the screen arrangement into a screen pressing furnace, heating to 725 ℃, applying pressure, and aligning the screenAnd performing screen pressing treatment on the sections. And (4) keeping the temperature of the screen section after the screen pressing at 688 ℃ for 12 hours, and cooling to room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 1mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished fiber panel is placed in a vacuum chamber (1X 10)-4Pa), evaporating an aluminum film with the thickness of 200nm on the polished surface of the panel by vacuum evaporation coating (PVD), and spraying a layer of protective paint on the outer surface of the polished surface of the panel. And coating a layer of epoxy resin glue on the surface of the finish grinding surface to form the high-gain total reflection optical fiber panel without dispersed light.
Example 5
As shown in fig. 6, a core glass rod having a high refractive index (Nd = 1.783) was sleeved with a sheath glass tube having a low refractive index (Nd = 1.508) to form a composite tube rod. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 810 ℃, and drawing a single wire. After the monofilaments are drawn, the drawn monofilaments are subjected to bar arrangement treatment of a certain process, so that the monofilaments are arranged into a regular hexagonal multi-filament bar, and absorbing glass filaments are fully inserted into the holes. The aligned multifilament bar was placed in a multifilament furnace and drawn while being heated to 800 ℃. The drawn multifilaments having a filament diameter of 20 μm were cut into 15 cm-long multifilaments, and the multifilaments were subjected to a screen alignment treatment in a certain process to align the multifilaments into a regular hexagon having a side of 12 cm. And (4) putting the multifilament screen sections subjected to screen arrangement into a screen pressing furnace, heating to 750 ℃, applying pressure, and performing screen pressing treatment on the screen sections. And (4) preserving the heat of the screen section after the screen pressing is finished for 10 hours at 670 ℃, and cooling the screen section to the room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 1.5mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished surface of the polished optical fiber panel is put into a prepared glucose (15%) clear silver ammonium solution containing 2% of silver nitrate and 10% of sodium hydroxide, and a silver mirror reaction is carried out during water bath heating to form a total reflection mirror surface, and then a layer of protective paint is sprayed on the outer surface of the total reflection mirror surface. And coating a layer of epoxy resin glue on the surface of the fine grinding surface to form the high-gain total-reflection optical fiber panel without dispersion light.
Example 6
As shown in FIG. 7, a core frit glass rod having a high refractive index (Nd = 1.762) was usedAnd a cladding glass tube with low refractive index (Nd = 1.581) is sleeved on the outer surface of the composite tube rod to form a set of composite tube rods. And (3) putting the composite glass tube rod into a wire drawing machine, heating to 780 ℃, and drawing a single wire. After the monofilaments are drawn, the drawn monofilaments are subjected to bar arrangement treatment of a certain process, so that the monofilaments are arranged into a regular hexagonal multi-filament bar, and absorbing glass filaments are fully inserted into the holes. The aligned multifilament bar was placed in a multifilament furnace and drawn while being heated to 740 ℃. The drawn multifilament having a monofilament diameter of 20 μm was cut into a length of 15cm, and subjected to screen alignment treatment in a certain process to align the multifilament into a square shape having a side length of 15 cm. And (4) putting the multifilament screen sections subjected to screen arranging into a screen pressing furnace, heating to 650 ℃, applying pressure, and performing screen pressing treatment on the screen sections. And (4) preserving the heat of the screen section after the screen pressing at 630 ℃ for 10h, and cooling the screen section to room temperature along with the furnace. And taking out the annealed screen section, putting the screen section into a wire cutting machine, cutting the screen section into an optical fiber panel with the thickness of 1.5mm, polishing the single surface of the optical fiber panel, and finely grinding the single surface. The polished fiber panel is placed in a vacuum chamber (1X 10)-5Pa), evaporating an aluminum film with the thickness of 50nm on the polished surface of the panel by vacuum evaporation coating (PVD), and spraying a layer of protective paint on the outer surface of the polished surface of the panel. And coating a layer of epoxy resin glue on the surface of the fine grinding surface to form the high-gain total-reflection optical fiber panel without dispersion light.
The optical fiber panel manufactured by the method is spliced to form a projection curtain, so that the gain and the contrast of projection imaging are obviously improved; the light resistance is good; the whole brightness of the surface is consistent, the surface is smooth and easy to maintain, and the surface is free of light spots and is firm and durable. The surface of the glass bead powder has no problems of easy powder falling, difficult maintenance and the like caused by coating metal paint, glass beads and other substances.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A fiber optic faceplate, comprising: the polishing device comprises an optical fiber layer (1), wherein a polishing surface (2) is arranged on one surface of the optical fiber layer (1), a total reflection layer (4) is arranged on the polishing surface (2), the optical fiber layer (1) is used for refracting light to the total reflection layer (4), and the total reflection layer (4) is used for reflecting the light to the surface of an optical fiber panel through the optical fiber layer (1).
2. The fiber optic faceplate of claim 1, wherein: the other side of the optical fiber layer (1) is provided with a fine grinding surface (3); the fine grinding surface (3) is used for removing chromatic dispersion in light, a gain improving layer (5) is arranged on the fine grinding surface (3), and the gain improving layer (5) is used for improving the gain of the optical fiber panel.
3. The fiber optic faceplate of claim 1, wherein: the optical fiber layer (1) is formed by arranging a plurality of multi-filament rods, each multi-filament rod comprises a plurality of composite tube rods, optical absorption yarns (1-2) or colorless transparent yarns (1-3) are inserted into gaps of the composite tube rods, each multi-filament rod comprises a core material rod (1-0), a sheath material tube (1-1) is arranged outside the core material rod (1-0), and the refractive index of the core material rod (1-0) is higher than that of the sheath material tube (1-1).
4. A fiber optic faceplate according to claim 3, wherein:
an absorption leather material pipe (1-4) is arranged outside the composite pipe rod.
5. A method of making a fiber optic faceplate, comprising:
sleeving a sheath material pipe on the outer surface of a core material rod to form a set of composite pipe rod, wherein the refractive index of the core material rod is higher than that of the sheath material pipe; putting the composite pipe rod into a wire drawing machine, heating to 810 +/-100 ℃, and drawing a single wire;
after the monofilaments are drawn, arranging a plurality of monofilaments into a multifilament rod, wherein optical absorption filaments or colorless transparent filaments are inserted into pores among the monofilaments;
placing the arranged multifilament bar into a multifilament furnace to be heated and drawn, arranging a plurality of multifilaments into a multifilament screen section, placing the multifilament screen section into a screen pressing furnace to be heated and applied with pressure, and performing screen pressing treatment on the multifilament screen section;
the multifilament screen section after the screen pressing is firstly insulated and then cooled to room temperature along with the furnace;
taking out the cooled multifilament screen section, putting the cooled multifilament screen section into a wire cutting machine, cutting the multifilament screen section into an optical fiber panel with the thickness of 0.1mm-100mm, polishing one surface of the optical fiber panel, and finely grinding the other surface of the optical fiber panel;
carrying out silver mirror reaction or film coating on the polished surface of the optical fiber panel to form a total reflection layer;
and coating a layer of epoxy resin glue on the fine grinding surface of the optical fiber panel to form a de-dispersion layer.
6. The method of claim 5, wherein:
and an absorption leather material pipe is sleeved outside the composite pipe rod.
7. The method of claim 5, wherein:
heating the multifilament bar to 760 +/-100 ℃ in a multifilament furnace; heating the multifilament screen section to 690 +/-80 ℃ in a screen pressing furnace; and keeping the screen sections subjected to screen pressing at 650 +/-80 ℃ for 10 +/-5 h.
8. The method of claim 5, wherein:
the silver mirror reaction process comprises the following steps: putting the polished surface of the optical fiber panel into a prepared 10-20% glucose clear silver ammonium solution containing 1-3% of silver nitrate and 7-15% of sodium hydroxide, and heating in water bath until a silver mirror is formed;
the coating process comprises the following steps: putting the polished surface of the optical fiber panel into a vacuum chamber with the pressure of 1 × 10-3Pa～1×10-6And Pa, evaporating and plating an aluminum film on the polished surface through vacuum evaporation plating, and then spraying protective paint on the surface of the aluminum film.
9. A curtain for projection, its characterized in that: the curtain is formed by splicing a plurality of optical fiber panels according to any one of claims 1 to 4.
10. A preparation method of a curtain for projection is characterized by comprising the following steps: the method comprises the steps of preparing the optical fiber panel by the preparation method of the optical fiber panel as claimed in any one of claims 5 to 8, and splicing a plurality of prepared optical fiber panels.
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| CN202210438159.6A CN114755755A (en) | 2022-04-25 | 2022-04-25 | Optical fiber panel and preparation method thereof, and curtain for projection and preparation method thereof |
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| CN202210438159.6A CN114755755A (en) | 2022-04-25 | 2022-04-25 | Optical fiber panel and preparation method thereof, and curtain for projection and preparation method thereof |
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