CN109782388A - Fiber optics and its manufacturing method, fibre faceplate - Google Patents
Fiber optics and its manufacturing method, fibre faceplate Download PDFInfo
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- CN109782388A CN109782388A CN201711121581.4A CN201711121581A CN109782388A CN 109782388 A CN109782388 A CN 109782388A CN 201711121581 A CN201711121581 A CN 201711121581A CN 109782388 A CN109782388 A CN 109782388A
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- fibre core
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- reflecting layer
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Abstract
A kind of fiber optics and its manufacturing method, fibre faceplate, the fiber optics include: fibre core；It is coated on the transparent reflecting layer in the core periphery face, and the refractive index of the transparent reflecting layer is lower than the refractive index of the fibre core；It is coated on the absorbed layer of the transparent reflecting layer outer peripheral surface.The present invention is while absorbing the stray light escaped from fibre core using absorbed layer, the transparent reflecting layer being arranged between absorbed layer and fibre core plays the role of stopping pigment penetration into fibre core, reduce the light injury in fibre core, and guarantees the stability at the interface of the fibre core and transparent reflecting layer.
Description
Technical field
The present invention relates to fibre faceplate manufacturing field, in particular to a kind of fiber optics and its manufacturing method, fibre faceplate.
Background technique
Fibre faceplate (FOP, Fiber Optical Plate) is made of many compact arranged fiber optics of rule
A kind of rigid optical fiber element.Specifically, fibre faceplate is assembled using fiber optics, is cut with forming angle with optical propagation direction
It cuts, and grinds or polish both ends of the surface, form fibre faceplate.
Fibre faceplate has collection optical property good, high resolution, optically has zero thickness, can transmit height without distortions
Resolution chart as the features such as, be widely used in input, the output port of various electro-optical devices.Fibre faceplate has been used as portion at present
The key element of spectroscopy fingerprint recognition system has the characteristics that small in size, discrimination is high, gradually emerges on the market.
Existing fibre faceplate is in optical transmission process, there are part stray light from evolution in fibre core through in fiber optics
The problem of covering is transferred in other fiber optics, leads to the degradation in contrast of image.Using the means of plugging wire to a certain degree
On be able to solve the above problem.Specifically, it will form a gap between three fiber optics, using diameter about fiber optics diameter
0.14 times of filament inserts the gap, and the filament inserted has light absorbing function, which is known as absorbing silk；Plugging wire
Technical solution are as follows: all placed on six interfaces of fiber optics and absorb silk；Alternatively, selectivity removes some optical fibers, with
Black silk replaces.
However, fibre faceplate in the prior art still has serious leakage problem.
Summary of the invention
Problems solved by the invention is to provide a kind of fiber optics and its manufacturing method, fibre faceplate, prevent stray light from
In fiber optics while evolution, additionally it is possible to avoid black pigment infiltration problem, improve picture contrast and transmitance.
To solve the above problems, the present invention provides a kind of fiber optics, comprising: fibre core；It is coated on the core periphery face
Transparent reflecting layer, and the refractive index of the transparent reflecting layer is lower than the refractive index of the fibre core；It is coated on the transparent reflecting layer
The absorbed layer of outer peripheral surface.
Optionally, the material of the absorbed layer is black material.
Optionally, the material of the absorbed layer is blue material or red material.
Optionally, on perpendicular to the fibre core extending direction plane, the fibre core, transparent reflecting layer and absorbed layer
The sum of area of section is the fiber optics gross area, and the area of section of the absorbed layer accounts for the 1%~80% of the fiber optics gross area.
Optionally, on perpendicular to the fibre core extending direction plane, the fibre core, transparent reflecting layer and absorbed layer
The sum of area of section is the fiber optics gross area, and the area of section of the fibre core accounts for the 20%~90% of the fiber optics gross area.
Optionally, on perpendicular to the fibre core extending direction plane, the fibre core, transparent reflecting layer and absorbed layer
The sum of area of section be the fiber optics gross area, and the area of section of the transparent reflecting layer account for the fiber optics gross area 0.5%~
30%.
Optionally, the core diameter of the fibre core is less than or equal to 35 μm.
Optionally, the thermal expansion coefficient of the fibre core is greater than the thermal expansion coefficient of the transparent reflecting layer；It is described transparent anti-
The thermal expansion coefficient for penetrating layer is greater than the thermal expansion coefficient of the absorbed layer.
Optionally, the difference of the thermal expansion coefficient of the fibre core and the transparent reflecting layer is in 2 units to 50 unit models
In enclosing.
Optionally, the difference of the thermal expansion coefficient of the absorbed layer and the transparent reflecting layer is in 2 units to 50 units
In range.
The present invention also provides a kind of fibre faceplates, comprising: several above-mentioned fiber optics.
The present invention also provides a kind of manufacturing methods of fiber optics, comprising: forms prefabricated rods, the prefabricated rods include: prefabricated
Fibre core；It is coated on the prefabricated transparent reflecting layer in the prefabricated core periphery face, and the refractive index of the prefabricated transparent reflecting layer is low
In the refractive index of the prefabricated fibre core；It is coated on the prefabricated absorption layer of the prefabricated transparent reflecting layer outer peripheral surface；To described prefabricated
Stick carries out wire drawing process and forms fiber optics, wherein the prefabricated fibre core forms fibre core via wire drawing process, described prefabricated transparent anti-
It penetrates layer and forms transparent reflecting layer via wire drawing process, the prefabricated absorption layer forms absorbed layer via wire drawing process.
Optionally, the heating temperature that the wire drawing process uses is greater than or equal to 600 DEG C.
Compared with prior art, technical solution of the present invention has the advantage that
In the technical solution of fiber optics provided by the invention, it is covered with transparent reflecting layer in core periphery bread, and described
The refractive index in bright reflecting layer is lower than the refractive index of the fibre core；And the transparent reflecting layer outer peripheral surface is coated with absorbed layer.Wherein,
There is index matching, so that light can be in fibre core and transparent reflecting layer between the transparent reflecting layer and the fibre core
Interface is totally reflected, and guarantees that light is propagated in fibre core；Also, the absorbed layer can be absorbed to be escaped from the fibre core
Stray light, prevent the stray light from diffusing in other fiber optics；Meanwhile the transparent reflecting layer can prevent the absorption
Pigment in layer diffuses in fibre core, and pigment is avoided to cause adverse effect to the interface of the fibre core and transparent reflecting layer.Cause
In this fiber optics provided by the invention, the stray light is absorbed, and the interface of fibre core and transparent reflecting layer keeps stablizing, and is all-trans
It penetrates and is normally carried out, light injury is small, improves the transmitance of fiber optics.
In optinal plan, the core diameter of the fibre core is less than or equal to 35 μm, since fibre core is without considering that black pigment permeates
Problem, therefore that no setting is required is excessive for the core diameter of fibre core allows the core diameter of the fibre core in the present invention to be made small, the fibre
The core diameter of core is less than or equal to 35 μm, to improve the resolution ratio of image.
The present invention also provides a kind of fibre faceplates, including several above-mentioned fiber optics, due to the stray light in fiber optics
It is absorbed by the absorption layer, therefore prevents the stray light from entering in other fiber optics, to improve the contrast of image；And it also keeps away
Exempt from pigment penetration to fibre core, improves the transmitance of fibre faceplate.
The present invention also provides a kind of manufacturing methods of fiber optics, form prefabricated rods, the prefabricated rods include: prefabricated fibre core；
It is coated on the prefabricated transparent reflecting layer in the prefabricated core periphery face, and the refractive index of the prefabricated transparent reflecting layer is lower than described
The refractive index of prefabricated fibre core；It is coated on the prefabricated absorption layer of the prefabricated transparent reflecting layer outer peripheral surface；Then, to the prefabricated rods
It carries out wire drawing process and forms fiber optics.During wire drawing process, the translucent material covering plays the pigment of barrier absorbing layer
The effect in fibre core is infiltrated into, the quality of the fiber optics of formation is improved.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of fiber optics end face provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of fiber optics provided in an embodiment of the present invention.
Specific embodiment
It can be seen from background technology that fibre faceplate in the prior art has leakage problem.
In order to solve the leakage problem of fibre faceplate, propose that fiber optics uses the scheme of casting skin pipe.Specifically, by fiber optics
In covering change casting skin pipe into, the material of the casting skin pipe is the material for having color (i.e. black) absorbable specified spectrum, that is, light
The material of fibre core in fiber is high n-value material, and the material of the covering in fiber optics is low n value material, and n is refractive index.
However, when the covering of fiber optics uses casting skin pipe, and there are the infiltration problem of black pigment, i.e. black pigment seeps
Thoroughly in fibre core；Black pigment enters in fibre core, and the interface performance for not only resulting in fibre core and casting skin pipe is deteriorated, and influences to be totally reflected
Progress, and the black pigment can also absorb the light in fibre core, and the transmitance of light is caused to decline.
In order to avoid black pigment permeates bring adverse effect, the fiber optics has big fibre core core diameter value, this will
Lead to the lack of resolution of image；And even if fibre core has big fibre core value, the black pigment penetrated into fibre core can still be inhaled
Receiving portions light causes the transmitance of light to decline.
To solve the above problems, the present invention provides a kind of fiber optics, fibre core；It is coated on the transparent anti-of the core periphery face
Layer is penetrated, and the refractive index of the transparent reflecting layer is lower than the refractive index of the fibre core；It is coated on the transparent reflecting layer outer peripheral surface
Absorbed layer.While improving the transmitance of fiber optics, the stray light escaped out of fiber optics is reduced.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 1 and Fig. 2 is the structural schematic diagram of fiber optics provided in an embodiment of the present invention.
Referring to Figure 1 and Figure 2, Fig. 1 is the overlooking structure diagram of fiber optics end face, and Fig. 2 is fiber optics along perpendicular to optical fiber
The schematic diagram of the section structure in extending direction plane is tieed up, the fiber optics includes:
Fibre core 101；
It is coated on the transparent reflecting layer 102 of 101 outer peripheral surface of fibre core, the refractive index of the transparent reflecting layer 102 is lower than
The refractive index of the fibre core 101；
It is coated on the absorbed layer 103 of 102 outer peripheral surface of transparent reflecting layer.
Fiber optics provided in an embodiment of the present invention is described in detail below with reference to attached drawing.
The material of the fibre core 101 is quartz glass, wherein in the quartz glass doped with Yb, Tm, Ho, F, P or
One or more of Ge element.
In the present embodiment, the material of the fibre core 101 is the quartz glass doped with Ge element.
Transparent reflecting layer 102 is provided between the fibre core 101 and absorbed layer 103, the transparent reflecting layer 102 plays resistance
Gear acts on, in the pigment penetration to fibre core 101 for stopping the absorbed layer 103.Therefore, the pigment of the absorbed layer 103 be difficult into
Enter in fibre core 101, so that the interface between fibre core 101 and transparent reflecting layer 102 keeps stablizing, so that the total reflection in fiber optics
It can be normally carried out, and black pigment is avoided to infiltrate into fibre core 101 and absorb light, so that light injury is small in fibre core 101, from
And promote the image transmitance for the fibre faceplate that multiple fiber optics are constituted.
As the above analysis, in the present embodiment, increase fibre core since pigment penetration enters in fibre core without considering
Core diameter, to ensure that the light transmittance of light, improves the performance of fiber optics so that the core diameter of the fibre core 101 is made small, is promoted
The image resolution ratio for the fibre faceplate that multiple fiber optics are constituted.In the present embodiment, the core diameter of the fibre core 101 is less than or equal to 35
μm。
In the present embodiment, the end surface shape of the fibre core 101 is circle, that is, the fibre core 101 is cylinder barred body.
It should also be noted that, in order to guarantee ability of the fibre core 101 with good transmission ray, the present embodiment
In, on perpendicular to the 101 extending direction plane of fibre core, the fibre core 101, transparent reflecting layer 102 and absorbed layer 103
The sum of area of section is the fiber optics gross area, and the area of section of the fibre core 101 accounts for the 20%~90% of the fiber optics gross area.
The refractive index of the transparent reflecting layer 102 is lower than the refractive index of the fibre core 101, guarantees light in the fibre core
101 are totally reflected with the interface of transparent reflecting layer 102.
In the present embodiment, the material of the transparent reflecting layer 102 is quartz glass.
The diameter of the transparent reflecting layer 102 is unsuitable too small, also should not be too large.If the diameter of the transparent reflecting layer 102
Too small, then the blocking capability that the pigment penetration for the barrier absorbing layer 103 that the transparent reflecting layer 102 plays enters fibre core 101 is poor,
It is easy to cause the pigment of absorbed layer 103 to infiltrate into fibre core 101 via transparent reflecting layer 102；If the transparent reflecting layer 102
Diameter is excessive, and it will cause the wastes of material, and is unfavorable for reducing the volume of fiber optics.
The diameter of the transparent reflecting layer 102 is related with its area of section.For this purpose, in the present embodiment, perpendicular to described
In 101 extending direction plane of fibre core, the sum of the fibre core 101, transparent reflecting layer 102 and area of section of absorbed layer 103 are
The fiber optics gross area, and the area of section of the transparent reflecting layer 102 accounts for the 0.5%~30% of the fiber optics gross area.
The absorbed layer 103 collectively forms the covering of the fibre core 101 with the transparent reflecting layer 102.
On the one hand the effect of the absorbed layer 103 includes: that for light in fiber optics in transmission process, it is spuious that there are parts
Light penetrates the case where transparent reflecting layer 102；The absorbed layer 103 can absorb the stray light, prevent spuious in fiber optics
Light leakage problem interferes so that the stray light be avoided to be transferred in other fiber optics, guarantees the transparent reflecting layer 102
Stablize with the interface performance of the fibre core 101, fiber optics inner total reflection is normally carried out, to guarantee the light comprising multiple fiber optics
Fine panel has hi-vision contrast performance.On the other hand, the absorbed layer 103 is collectively formed with the transparent reflecting layer 102
The covering of the fibre core 101.
In the present embodiment, the material of the absorbed layer 103 is black material.In other embodiments, the absorbed layer
Material can also be that blue material or red material are determined according to the difference for the light type that the absorbed layer needs to absorb
The material of the absorbed layer.
The diameter of the absorbed layer 103 is unsuitable too small, also should not be too large.If the diameter of the absorbed layer 103 is too small, institute
The ability for stating the absorption transmission of stray light that absorbed layer 103 plays is excessively weak, will lead to stray light and propagates in other fiber optics, unfavorable
In the picture contrast for improving fibre faceplate；If the diameter of the absorbed layer 103 is excessive, it will cause the wastes of material, and not
Conducive to the volume for reducing fiber optics.
The diameter of the absorbed layer 103 is related with its area of section.For this purpose, in the present embodiment, perpendicular to the fibre core
In 101 extending direction planes, the sum of the fibre core, area of section of transparent reflecting layer and absorbed layer are the fiber optics gross area,
And the area of section of the absorbed layer accounts for the 1%~80% of the fiber optics gross area.
In the present embodiment, except requiring the fibre core 101 to match with 102 refractive index of transparent reflecting layer, guarantee optical fiber in light
Except being totally reflected in fiber, thermal expansion coefficient mutual of the fibre core 101 and the transparent reflecting layer 102 is also required
Match.The thermal expansion coefficient of the transparent reflecting layer 102 is greater than the thermal expansion coefficient of the fibre core 101, therefore forms light in wire drawing
When fiber, action of compressive stress of the fibre core 101 by transparent reflecting layer 102 guarantees 102 jail of fibre core 101 and transparent reflecting layer
Solid be bonded together, while guaranteeing that fibre core 101 has certain mechanical strength, flexibility and uses at different temperatures
Stability.
The difference of the thermal expansion coefficient of the fibre core 101 and the transparent reflecting layer 102 is unsuitable too small, also should not be too large.If
The difference of the thermal expansion coefficient of the fibre core 101 and the transparent reflecting layer 102 is too small, and the fibre core 101 is by described transparent anti-
The compression for penetrating layer 102 is too small, is unfavorable for improving the adhesive property between fibre core 101 and transparent reflecting layer 102；If the fibre core
101 and the transparent reflecting layer 102 thermal expansion coefficient difference it is excessive, the compression that fibre core 101 is subject to is excessive, thus be possible to
Fibre core 101 is caused to be destroyed, and the interface quality of fibre core 101 and the transparent reflecting layer 102 is deteriorated.
For this purpose, in the present embodiment, the thermal expansion system of the thermal expansion coefficient of the fibre core 101 and the transparent reflecting layer 102
The difference of number is within 2 units to 50 unit ranges.
Correspondingly, the thermal expansion coefficient of the transparent reflecting layer 102 is greater than the heat of the absorbed layer 103 in the present embodiment
The coefficient of expansion, so that action of compressive stress of the transparent reflecting layer 102 by absorbed layer 103, guarantees the transparent reflecting layer 102
Be securely bonded to together with the absorbed layer 103, at the same guarantee the transparent reflecting layer 102 have certain mechanical strength,
Flexibility and the stability used at different temperatures.
With reference to above-mentioned analysis, in the present embodiment, the thermal expansion coefficient of the transparent reflecting layer 102 and the absorbed layer 103
Difference within 2 units to 50 unit ranges.
In fiber optics provided in an embodiment of the present invention, due to being coated with absorbed layer 103 in 102 outer peripheral surface of transparent reflecting layer,
The absorbed layer 103 can absorb the stray light escaped from fibre core 101, and the stray light is avoided to diffuse in other fiber optics,
Improve the contrast of image；Also, due to being provided with transparent reflecting layer 102 between the absorbed layer 103 and the fibre core 101,
The transparent reflecting layer 102 is capable of the diffusion of the pigment of barrier absorbing layer 103, prevents pigment from diffusing in fibre core 101, to mention
The transmitance of hi-vision.For example, the transparent reflecting layer 102 can stop black when the material of absorbed layer 103 is black material
The diffusion of color pigment prevents black pigment from diffusing in fibre core 101.
Correspondingly, the present invention also provides a kind of fibre faceplates, including several above-mentioned optical fiber in conjunction with referring to Figure 1 and Figure 2
Dimension.
Since the stray light absorbed layer 103 in the fiber optics absorbs, so that the stray light escaped out of fibre core 101 is difficult
To be transmitted in other fiber optics, to improve the picture contrast of fibre faceplate.Also, due to the transparent reflecting layer 102
The infiltration of pigment in barrier absorbing layer 103 avoids pigment to adverse effect caused by fibre core 101, and the transparent reflection
Layer 102 and the interface performance of the fibre core 101 are stablized, so that the transmitance of fibre faceplate image gets a promotion；And the fibre core
101 core diameter is small, without considering pigment penetration problem by set big core diameter, so that the image resolution ratio of fibre faceplate obtains
It is promoted.
Correspondingly, the present invention also provides a kind of manufacturing methods of above-mentioned fiber optics.Below by the manufacture to the fiber optics
Method is described in detail.
Firstly, forming prefabricated rods, the prefabricated rods include: prefabricated fibre core；It is coated on the pre- of the prefabricated core periphery face
Transparent reflecting layer processed, and the refractive index of the prefabricated transparent reflecting layer is lower than the refractive index of the prefabricated fibre core；It is coated on described
The prefabricated absorption layer of prefabricated transparent reflecting layer outer peripheral surface.
Wherein, subsequent to above-mentioned fibre core is formed after the prefabricated fibre core progress wire drawing process, to described prefabricated transparent anti-
It penetrates after layer carries out wire drawing process and forms above-mentioned transparent reflecting layer, it is above-mentioned to being formed after prefabricated absorption layer progress wire drawing process
Absorbed layer.
The thermal expansion coefficient of the prefabricated fibre core is greater than the thermal expansion coefficient of the prefabricated transparent reflecting layer；It is described prefabricated
The thermal expansion coefficient in bright reflecting layer is greater than the thermal expansion coefficient of the prefabricated absorption layer.
In the present embodiment, the prefabricated rods are formed using improved chemical vapor deposition process (MCVD).In other implementations
It, can also be using vapor axial depositing operation (VAD), outside vapor deposition process (OVD) or plasma chemistry gas in example
Phase depositing operation (PCVD) forms the prefabricated rods.
Then, wire drawing process is carried out to the prefabricated rods and forms fiber optics, wherein the prefabricated fibre core is via wire drawing process
Fibre core 101 is formed, the prefabricated transparent reflecting layer forms transparent reflecting layer 102, the prefabricated absorption layer warp via wire drawing process
Absorbed layer 103 is formed by wire drawing process.
Specifically, prefabricated rods are heated by wire drawing machine, the prefabricated rods high temperature melting is met the requirements to pull into diameter
Fiber optics.
In the present embodiment, the heating temperature that the wire drawing machine heats the prefabricated rods is greater than or equal to 600 DEG C.
During wire drawing process, the prefabricated transparent reflecting layer, which plays, stops the pigment penetration in prefabricated absorption layer to pre-
Effect in fibre core processed prevents black pigment from polluting the fibre core 101 to be formed, and guarantees the fibre core 101 and the transparent reflection
The interface performance of layer 102 is stablized, and the pigment is avoided to cause adverse effect to the interface, thus improve the fiber optics of manufacture
Performance.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (13)
1. a kind of fiber optics characterized by comprising
Fibre core；
It is coated on the transparent reflecting layer in the core periphery face, and the refractive index of the transparent reflecting layer is lower than the folding of the fibre core
Penetrate rate；
It is coated on the absorbed layer of the transparent reflecting layer outer peripheral surface.
2. fiber optics as described in claim 1, which is characterized in that the material of the absorbed layer is black material.
3. fiber optics as described in claim 1, which is characterized in that the material of the absorbed layer is blue material or red material
Material.
4. fiber optics as claimed in claim 1 or 2, which is characterized in that on perpendicular to the fibre core extending direction plane, institute
The sum of area of section of fibre core, transparent reflecting layer and absorbed layer is stated as the fiber optics gross area, and the section face of the absorbed layer
Product accounts for the 1%~80% of the fiber optics gross area.
5. fiber optics as claimed in claim 1 or 2, which is characterized in that on perpendicular to the fibre core extending direction plane, institute
The sum of area of section of fibre core, transparent reflecting layer and absorbed layer is stated as the fiber optics gross area, and the area of section of the fibre core
Account for the 20%~90% of the fiber optics gross area.
6. fiber optics as claimed in claim 1 or 2, which is characterized in that on perpendicular to the fibre core extending direction plane, institute
Stating the sum of area of section of fibre core, transparent reflecting layer and absorbed layer is the fiber optics gross area, and the transparent reflecting layer cuts open
Face area accounts for the 0.5%~30% of the fiber optics gross area.
7. fiber optics as described in claim 1, which is characterized in that the core diameter of the fibre core is less than or equal to 35 μm.
8. fiber optics as described in claim 1, which is characterized in that the thermal expansion coefficient of the fibre core is greater than the transparent reflection
The thermal expansion coefficient of layer；The thermal expansion coefficient of the transparent reflecting layer is greater than the thermal expansion coefficient of the absorbed layer.
9. fiber optics as claimed in claim 8, which is characterized in that the thermal expansion coefficient of the fibre core and the transparent reflecting layer
Difference in 2 units to 50 unit ranges.
10. fiber optics as claimed in claim 8, which is characterized in that the thermal expansion of the absorbed layer and the transparent reflecting layer
The difference of coefficient is in 2 units to 50 unit ranges.
11. a kind of fibre faceplate characterized by comprising
Several are such as the described in any item fiber optics of claim 1-10.
12. a kind of manufacturing method of such as described in any item fiber optics of claim 1-10 characterized by comprising
Prefabricated rods are formed, the prefabricated rods include: prefabricated fibre core；It is coated on the prefabricated transparent reflection in the prefabricated core periphery face
Layer, and the refractive index of the prefabricated transparent reflecting layer is lower than the refractive index of the prefabricated fibre core；It is coated on described prefabricated transparent anti-
Penetrate the prefabricated absorption layer of layer outer peripheral surface；
Wire drawing process is carried out to the prefabricated rods and forms fiber optics, wherein the prefabricated fibre core forms fibre core via wire drawing process,
The prefabricated transparent reflecting layer forms transparent reflecting layer via wire drawing process, and the prefabricated absorption layer is formed via wire drawing process to be inhaled
Receive layer.
13. manufacturing method as claimed in claim 12, which is characterized in that the heating temperature that the wire drawing process uses be greater than or
Equal to 600 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711121581.4A CN109782388A (en) | 2017-11-14 | 2017-11-14 | Fiber optics and its manufacturing method, fibre faceplate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711121581.4A CN109782388A (en) | 2017-11-14 | 2017-11-14 | Fiber optics and its manufacturing method, fibre faceplate |
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| CN109782388A true CN109782388A (en) | 2019-05-21 |
Family
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| CN201711121581.4A Pending CN109782388A (en) | 2017-11-14 | 2017-11-14 | Fiber optics and its manufacturing method, fibre faceplate |
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| CN113301753A (en) * | 2021-06-01 | 2021-08-24 | Oppo广东移动通信有限公司 | Cover plate preparation method, cover plate and electronic equipment |
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Application publication date: 20190521 |