CN103486502B - Optical fiber network board laser light source - Google Patents
Optical fiber network board laser light source Download PDFInfo
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- CN103486502B CN103486502B CN201310450034.6A CN201310450034A CN103486502B CN 103486502 B CN103486502 B CN 103486502B CN 201310450034 A CN201310450034 A CN 201310450034A CN 103486502 B CN103486502 B CN 103486502B
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Abstract
The invention discloses a kind of optical fiber network board lasing light emitters, encapsulating structure is fixed including laser light source, the dispersion fiber of entirely lighting, the network structure being woven by dispersion fiber and fiber optic network, dispersion fiber carries out arrangement according to the specific structure calculated according to the size of backlight and the needs of uniformity and forms the uniform fiber optic network that shines, using the encapsulating structure of special designing by optical fiber network board that woven dispersion fiber network encapsulation is uniform light extraction.The present invention can obtain that uniformity of luminance is good, the arbitrary laser backlight variable, of low cost convenient for large-scale production of shape; the backlight of current LCD TV can be substituted; realize the full color laser display of low cost, and can be as the laser lighting light source of specific demand.
Description
Technical field
The invention belongs to light source and technical field of laser display, and in particular, to a kind of optical fiber network board laser light source.
Background technology
In traditional liquid crystal display using be usually that backlight adds and realizes the display of image in the form of modulation panel.The back of the body
Light source（BackLight）It is to be located at liquid crystal display（LCD）A kind of light source of behind, its illumination effect will directly influence liquid
Brilliant display module（LCM）Visual effect.Liquid crystal display does not shine in itself, and the figure or character that it shows are them to coming from
The result that the light of backlight is modulated.
Backlight mainly has EL at present（Electroluminescent）、CCFL（Cold-cathode fluorescence lamp）And LED（Light emitting diode）Three kinds
Type of backlight.
The luminous efficiency of EL lamps is high, low in energy consumption, shatter-proof, does not need to safeguard, it belongs to cold light source, and distribution of color is very uniform.
Compared with the irregularity in brightness of common LED backlight, the most apparent advantage of EL lamps is that its light can be more uniformly distributed
Across the screen.In addition, EL lamps also more power saving.The shortcomings that EL lamps is that brightness is low, short life（Generally 3000~
5000h）.
CCFL lamps technology maturation is lasted a long time, but is had a disadvantage that：First, colour gamut is smaller, NTSC generally can only achieve
The 72% of gamut standards；Second is that environmental protection standard is not met containing a small amount of mercury in cold cathode fluorescent tube；Third, light leakage phenomena is more
Generally, cold-starting is difficult, the response time is longer.
In recent years, LED backlight is quickly grown, and remarkable advantage is that color rendition range can reach NTSC color gamut standard
105%-120%.But LED light source has the drawback that：First, the brightness of LED is not high enough, need multiple LED be arranged in linear array or
It is arranged in face battle array；Second is that the monochromaticjty that LED shines is poor more than laser, in display colour gamut, color saturation and color degree true to nature etc.
Aspect is difficult to compared with laser light source.Projection Display and plate of flat liquid crystal display part can be greatly improved as light source using laser
Color characteristics, make that its colour gamut is wider, is more nearly natural colour.Laser display by be following display technology development trend and
The mainstream in market.
The invention of laser brings a kind of brand-new intense light source for the mankind, in science and technology, industry, national defence, medical treatment and people
Daily life in also obtain extensive use.Laser has the characteristics that monochromaticjty, directionality is fabulous and high brightness, laser light
Beam is usually the light pencil of angle of divergence very little, it be used widely in various fields it is formal because its these features but
It is then to need to carry out even light and shaping to laser beam when laser lighting and display field are applied.
Small round spot or dot are generally in receiving surface from the light beam of laser emitting, can not Direct Uniform illuminate one compared with
Big area, if such as the backlight that is shown using laser as liquid crystal flat-panel, it is necessary to using specific process by laser light
Beam is converted to uniform hot spot or area source, and to be carried out by the way of light guide plate, which needs current main stream approach
It will：First, multiple laser emission points, this be not suitable for laser high brightness the characteristics of；Second, after light guide plate, face brightness uniformity
Property is poor（<80%）, preferable appreciation effect can not be provided.Therefore, it according to the characteristics of laser high brightness, needs using special side
Laser beam is converted to the area source of uniformly light-emitting by method.
Invention content
Present inventor considers the above situation of the prior art and has made the present invention.The main object of the present invention
It is to solve the problems, such as that existing display light source technology exists, providing a kind of can switch to the laser of laser emitting in demand
The optical fiber network board laser light source of equally distributed light in size.The optical fiber network board light source both can replace existing EL, CCFL or
Light source of the LED array as LCD backlight plate so as to improve the color characteristics in flat panel TV, realizes that laser is panchromatic aobvious
Show, space illumination light source of different shapes can also be formed under special circumstances.
According to an aspect of the present invention, a kind of optical fiber network board lasing light emitter, leads including laser, Transmission Fibers, by entire body
The fiber optic network structure and fiber optic network that the dispersion fiber of light is woven into fix encapsulating structure, wherein, Transmission Fibers and disperse
Optical fiber is connected, and the laser that laser is sent out is transferred to dispersion fiber, wherein, dispersion fiber be arranged on backlight panel for
The fiber optic network structure of uniformly light-emitting, the fiber optic network structure arranged are packaged into the fiber optic network and fix encapsulating structure
In, the backlight as display device.
Advantages of the present invention advantageous effect major embodiment is in the following areas：It is good that the present invention can obtain uniformity of luminance, color
The light beam of high-power laser emitting can be converted to the good optical fiber of uniformity of luminance by the high optical fiber network board backlight of purity
Web plate backlight can replace EL, CCFL light pipe or LED array in LCD backlight plate, realize full color laser display,
And space laser lighting source is used as in special applications.
Description of the drawings
Fig. 1 is the structure diagram of optical fiber network board lasing light emitter according to an embodiment of the invention；
Fig. 2 is the schematic diagram of dispersion fiber according to an embodiment of the invention；
Fig. 3 is the schematic diagram that laser power changes with fiber lengths in optical fiber according to an embodiment of the invention；
Fig. 4 is a kind of schematic diagram of S-shaped fiber optic network according to an embodiment of the invention；
Fig. 5 is the schematic diagram of another net type fiber optic network according to an embodiment of the invention；
Fig. 6 is the schematic diagram of another screw type net type fiber optic network according to an embodiment of the invention；
Fig. 7 is a kind of schematic diagram of light reflecting device according to an embodiment of the invention；
Fig. 8 is the schematic diagram of another light reflecting device according to an embodiment of the invention.
Specific embodiment
Enumerate preferred embodiment below, and become apparent from completely illustrating the present invention with reference to attached drawing
Fig. 1 is the structure diagram of optical fiber network board lasing light emitter according to an embodiment of the invention.It is as shown in Figure 1, of the invention
Optical fiber network board laser light source include laser 1, Transmission Fibers 5, the network structure being woven by the dispersion fiber 2 of entire body leaded light
3 and fiber optic network fix encapsulating structure 4.Laser 1 can be solid state laser, gas laser, semiconductor laser or
Person's optical fiber laser, etc..Laser 1 exports laser by one section of Transmission Fibers 5, and Transmission Fibers 5 are connected with dispersion fiber 2
It connects, which may be used modular connection form, such as the plug adapters form such as SMA905, can also directly utilize optical fiber welding
It picks and is welded together Transmission Fibers 5 and dispersion fiber 2.More dispersion fibers are placed to be formed specifically by special braiding
Fiber optic network 3.After the braiding of fiber optic network 3 is completed, it is put into fixed encapsulating mould, using the silica gel of high transparency,
Form silica gel packaging structure 4 of the one piece of inside containing dispersion fiber.
Fig. 2 is according to the structure diagram of the dispersion fiber of the embodiment of the present invention, and operation principle is mixes in covering
Miscellaneous diffusing structure is unsatisfactory for total reflection condition when the light in fibre core is beaten in this diffusing structure, therefore has part light from disperse
Optical fiber side exports, and forms the shinny effect of whole light extraction.
Fig. 3 is the schematic diagram that laser power changes with fiber lengths in optical fiber according to an embodiment of the invention, as schemed institute
The change curve shown is the design reference of dispersion fiber arrangement.Specifically, at a certain position of dispersion fiber（Side）It is defeated
Go out light intensity with laser input of the position away from the dispersion fiber（Starting point）Length（Distance）And weaken.
Fig. 4 is a kind of schematic diagram of S-shaped fiber optic network according to an embodiment of the invention；Fig. 5 is reality according to the present invention
Apply the schematic diagram of another net type fiber optic network of example；Fig. 6 is another screw type light according to an embodiment of the invention
The schematic diagram of fibre web network.
As shown in Figs. 4-6, two or more roots are made more with the variation of length according to the lateral emitting intensity of dispersion fiber
Astigmatism is fine（It is two in Fig. 4 and 6, is four in Fig. 5）Symmetrical structure is formed in the rectangular display area of liquid crystal display panel.Example
Such as, two dispersion fibers in Fig. 4 are arranged along rectangle diagonal and central symmetry, wherein, the S-shaped arrangement of every dispersion fiber,
Wherein, every dispersion fiber respectively includes multiple straight line portions parallel to each other and multiple dogleg sections.Four disperses in Fig. 5
Optical fiber is arranged two-by-two along rectangle diagonal and central symmetry, wherein, two dispersion fibers are in continuous S-shaped arrangement, two diffused lights
Fibre in the continuous S-shaped arrangement being rotated by 90 °, wherein, every dispersion fiber respectively includes multiple straight line portions parallel to each other and more
A dogleg section.Two dispersion fibers in Fig. 6 form Double-spiral, but two mutual starting points of dispersion fiber（Laser inputs
End）And terminal（Laser exports end）It exchanges, that is, the start position of a dispersion fiber is nearby the end of another dispersion fiber
Point, vice versa.
Fig. 7 is a kind of schematic diagram of light reflecting device according to an embodiment of the invention, and Fig. 8 is implementation according to the present invention
The schematic diagram of another light reflecting device of example.As shown in Figure 7 and Figure 8, every dispersion fiber tail end can add reflection unit, make
The laser that be emitted in dispersion fiber end turns again in dispersion fiber and enhances the disperse of dispersion fiber and shines, raising light
Utilization rate.
According to an embodiment of the invention, which includes laser, is compiled by the dispersion fiber of entire body leaded light
The network structure and fiber optic network that are made into fix encapsulating structure, and dispersion fiber is according to the size of backlight and uniformity
It needs to arrange according to the specific structure calculated, so as to form a luminous uniform fiber optic network, uses encapsulating structure
By the optical fiber network board that woven dispersion fiber network encapsulation is uniform light extraction.
The laser can be solid state laser, gas laser, semiconductor laser, optical fiber laser, can also
It is LED light emitting diodes.
The laser can be the laser with optical fiber output, so as to which laser can be placed according to demand, not be free
Between position limitation.
The dispersion fiber is the special-use fiber of lateral emitting, by the dopant optical fiber in optical fiber
Laser is constantly emitted during transmission from optical fiber side, is integrally formed the shinny optical fiber of light extraction.Dispersion fiber possesses more
Dissipate factor beta,
Light intensity is with fiber position（Length distance）Relational expression be
P=P0*e-βx
Assuming that optical fiber total length is L, reverse transfer formula（The light intensity of reverse optical fiber and the relationship of position）It can be expressed as P
=P0*eβ(L-x)
So, for Fig. 4,6 shown in double optical fiber arrangements, input light distribution may be calculated：
P(x)=P0*(e-βx+eβ(L-x))
Wherein, x is fiber length locations（Length apart from optical fiber starting point）, performance numbers of the P0 for optic fibre input end, P (x)
For the performance number at x length.
Compared with single-path optical fiber, the uniformity coefficient of double optical fiber light distribution will improve very much.
On this basis, arrangement, the larger position optical fiber of light intensity optimize optical fiber according to the light intensity P at x position
It is distributed sparse, the weaker position fiber distribution of light intensity is more close.
Entire optical fiber can be divided into isometric N sections by light-emitting area size according to demand, and every section of length is c.
Every section of total luminous intensity can be obtained by the following formula：
Wherein, Wn is total luminous quantity of n-th section of optical fiber；
Therefore, spacing between the fibers can be obtained by the following formula：
Wherein, spacing of the Δ Dn between (n-1)th section of optical fiber and n-th section of optical fiber；Δ D (n+1) for n-th section of optical fiber and n-th+
Spacing between 1 section of optical fiber；WH total spacing between optical fiber；
Solve the arrangement separation delta Dn that above-mentioned equation group is obtained between N sections of optical fiber.
Above-mentioned formula calculates corresponding optical fiber arrangement as one-dimensional distribution situation, if arrangement mode is netted arrangement, needs
Net distribution is decomposed into two one-dimensional distributions to calculate, finally obtains entire optical fiber spacer conditions.
It is arranged according to above-mentioned arrangement mode, can effectively improve the luminous flux numerical value uniformity in unit area,
So as to realize the demand of the brightness uniformity of display panel distribution.
In conclusion the fiber optic network structure is to carry out special set according to light intensity and fiber lengths and position relationship
Meter, design standard is uniform for light distribution, can be parallel line shaped, netted or helical form and other various different demands
Shape.For the different shape of different Demand Designs so as to the unique characteristics of luminescence.Such as LCD TV backlight source,
Two optical fiber can be placed in parallel, laser exports laser from the both ends of optical fiber respectively, shown in Figure 3, simple optical fiber hair
Light light intensity is distributed for smoothed curve, and when two optical fiber overlapping arrangements, light intensity is overlapped mutually, so as to obtain shining more
Even optical fiber source, this structure is recycled, which to carry out braiding, becomes reticular structure, so as to obtain the good backlight of light extraction surface uniformity.
, similar to scheme, this specification no longer illustrates to prove one by one, belongs within the protection domain of this patent for other.
It is that optical fiber is fixed on backboard by the structure of mechanical fixed-type external that the fiber optic network, which fixes encapsulating structure,
Bottom surface is reflector, is light by being emitted on one side.Or fiber optic network structure is packaged by way of encapsulating encapsulation, typical case
Example is packaged using the silica gel of high light transmittance, silica gel good fluidity, and automatic flowing forms one flat plate, by optical fiber after curing
Network encapsulation is conducive to radiate and protect in inside, and does not influence light extraction efficiency.
The wavelength and power of laser, the dispersion coefficient of dispersion fiber, the shape of fiber optic network can be according to different
Application demand is adjusted, and so as to obtain the light source effect of different-effect, and processing technology is simple, and reliability is high.
In conclusion it will be appreciated by those of skill in the art that various repair can be made to the above embodiment of the present invention
Change, modification and replace, each fall within protection scope of the present invention as defined in the appended claims.
Claims (5)
1. a kind of optical fiber network board lasing light emitter, including laser, Transmission Fibers, the optical fiber being woven by the dispersion fiber of entire body leaded light
Network structure and fiber optic network fix encapsulating structure,
Wherein, Transmission Fibers are connected with dispersion fiber, and the laser that laser is sent out is transferred to dispersion fiber,
Wherein, dispersion fiber is arranged the fiber optic network structure for uniformly light-emitting, the fiber optic network arranged on backlight panel
Structure is packaged into the fiber optic network and fixes in encapsulating structure, the backlight as display device,
Wherein, the dispersion fiber by the diagonal along rectangular backlight panel and central symmetry arrangement two dispersion fiber groups
Into, wherein, every dispersion fiber is disposed in continuous S-shaped on backlight panel, and every dispersion fiber respectively includes multiple bendings
Partly and multiple straight line portions parallel to each other,
Wherein, the light distribution on luminous position of the dispersion fiber on backlight panel meets following formula：
P (x)=P0* (e-βx+eβ(L-x)),
Wherein, the length of two dispersion fibers is L, and x reaches the diffused light for the luminous position along a dispersion fiber
The length of fine laser input, P0 are the performance number of optic fibre input end, and P (x) is the performance number at x length, and β is the disperse
The dispersion coefficient of optical fiber.
2. a kind of optical fiber network board lasing light emitter, including laser, Transmission Fibers, the optical fiber being woven by the dispersion fiber of entire body leaded light
Network structure and fiber optic network fix encapsulating structure,
Wherein, Transmission Fibers are connected with dispersion fiber, and the laser that laser is sent out is transferred to dispersion fiber,
Wherein, dispersion fiber is arranged the fiber optic network structure for uniformly light-emitting, the fiber optic network arranged on backlight panel
Structure is packaged into the fiber optic network and fixes in encapsulating structure, the backlight as display device,
Wherein, the dispersion fiber by the diagonal along rectangular backlight panel and central symmetry arrangement four dispersion fiber groups
Into, wherein, the first and second dispersion fibers are disposed in continuous S-shaped on backlight panel, wherein, first and second disperse
Optical fiber respectively includes multiple dogleg sections and multiple horizontal linear parts parallel to each other,
Third and fourth dispersion fiber is in that the continuous S-shaped being rotated by 90 ° is disposed on backlight panel, wherein, third and fourth more
Astigmatism fibre respectively includes multiple dogleg sections and multiple vertical straight sections parallel to each other, wherein, the dispersion fiber exists
The light distribution on luminous position on backlight panel meets following formula：
P (x)=P0* (e-βx+eβ(L1-x)+e-βy+eβ(L2-y)),
Wherein, the length of first and second dispersion fiber is L1, and x is arrived for the luminous position along the first dispersion fiber
Up to the length of the laser input of the dispersion fiber, the length of third and fourth dispersion fiber is L2, and y is the position that shines
Put along third dispersion fiber and reach the length of the laser input of the dispersion fiber, P0 is the performance number of optic fibre input end, P
(x) it is the performance number at x length, β is the dispersion coefficient of the dispersion fiber.
3. a kind of optical fiber network board lasing light emitter, including laser, Transmission Fibers, the optical fiber being woven by the dispersion fiber of entire body leaded light
Network structure and fiber optic network fix encapsulating structure,
Wherein, Transmission Fibers are connected with dispersion fiber, and the laser that laser is sent out is transferred to dispersion fiber,
Wherein, dispersion fiber is arranged the fiber optic network structure for uniformly light-emitting, the fiber optic network arranged on backlight panel
Structure is packaged into the fiber optic network and fixes in encapsulating structure, the backlight as display device,
Wherein, the dispersion fiber forms two dispersion fibers of Double-spiral by arranging and forms, wherein, dispersion fiber
Laser exports end and the laser input of another dispersion fiber is located at same position, the laser of a dispersion fiber
The laser output end of input terminal and another dispersion fiber is located at same position,
Wherein, the light distribution on luminous position of the dispersion fiber on backlight panel meets following formula：
P (x)=P0* (e-βx+eβ(L-x)),
Wherein, the length of two dispersion fibers is L, and x reaches the diffused light for the luminous position along a dispersion fiber
The length of fine laser input, P0 are the performance number of optic fibre input end, and P (x) is the performance number at x length, and β is the disperse
The dispersion coefficient of optical fiber.
4. optical fiber network board lasing light emitter according to claim 1, wherein, the laser output end of the dispersion fiber is equipped with
Speculum or circulator, for shoot laser is made to be again introduced into dispersion fiber.
5. optical fiber network board lasing light emitter according to claim 1, wherein, determine every dispersion fiber by following steps
The arrangement interval of straight line portion, wherein, multiple straight line portions of every dispersion fiber are sequentially adjacent paragraph 1 to N sections etc.
Long straight line portion, every section of straight line portion are c plus the total length of the dogleg section of its extension, and wherein N is the positive integer more than 3：
Total luminous intensity Wn of every section of dispersion fiber is obtained by following formula：
Wherein, Wn is total luminous quantity of n-th section of straight line portion, wherein, n=1,2,3,4 ..., N；It is obtained often by the following formula
The arrangement interval of every section of straight line portion of root dispersion fiber：
Wherein, spacing of the Δ Dn between (n-1)th section of straight line portion and n-th section of straight line portion；Δ D (n+1) is n-th section of straight line portion
Divide the spacing between (n+1)th section of straight line portion, WH is the effective height of backlight panel；
Joint solves above-mentioned equation group, obtains arrangement the separation delta Dn, wherein n=2,3 between N sections of straight line portions,
4……,N。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450034.6A CN103486502B (en) | 2013-09-27 | 2013-09-27 | Optical fiber network board laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450034.6A CN103486502B (en) | 2013-09-27 | 2013-09-27 | Optical fiber network board laser light source |
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| CN103486502A CN103486502A (en) | 2014-01-01 |
| CN103486502B true CN103486502B (en) | 2018-07-06 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102010B (en) * | 2014-07-25 | 2016-09-28 | 厦门大学 | Optical-fiber laser backlight apparatus for shaping |
| CN107388084A (en) * | 2017-08-15 | 2017-11-24 | 杨林 | Fibre optic laser illuminator |
| CN111120884A (en) * | 2019-12-31 | 2020-05-08 | 浙江光塔节能科技有限公司 | Quantum dot fluorescent optical fiber lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200063U (en) * | 1986-01-04 | 1987-05-20 | 上海市激光技术研究所 | Dispersion light fibre for omnibearing homogeneous lightening |
| CN1595256A (en) * | 2003-09-11 | 2005-03-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and linear light source thereof |
| CN201844304U (en) * | 2010-09-26 | 2011-05-25 | 北京京东方光电科技有限公司 | Regionally controllable backlight source |
| CN203453943U (en) * | 2013-09-27 | 2014-02-26 | 深圳极光世纪科技有限公司 | Laser light source for optical fiber mesh plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060076520A (en) * | 2004-12-29 | 2006-07-04 | 주식회사 효성 | Backlight unit with a plastic optical fiber for an lcd |
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2013
- 2013-09-27 CN CN201310450034.6A patent/CN103486502B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200063U (en) * | 1986-01-04 | 1987-05-20 | 上海市激光技术研究所 | Dispersion light fibre for omnibearing homogeneous lightening |
| CN1595256A (en) * | 2003-09-11 | 2005-03-16 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and linear light source thereof |
| CN201844304U (en) * | 2010-09-26 | 2011-05-25 | 北京京东方光电科技有限公司 | Regionally controllable backlight source |
| CN203453943U (en) * | 2013-09-27 | 2014-02-26 | 深圳极光世纪科技有限公司 | Laser light source for optical fiber mesh plate |
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