CN103791452B - Light-source system - Google Patents

Light-source system Download PDF

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Publication number
CN103791452B
CN103791452B CN201410059873.XA CN201410059873A CN103791452B CN 103791452 B CN103791452 B CN 103791452B CN 201410059873 A CN201410059873 A CN 201410059873A CN 103791452 B CN103791452 B CN 103791452B
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CN
China
Prior art keywords
described
optical fiber
light
bundling optical
bundling
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CN201410059873.XA
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Chinese (zh)
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CN103791452A (en
Inventor
张健
张渠
冯治国
田翀
卢继兵
刘李泉
秦庆旺
付连秋
Original Assignee
中国人民银行印制科学技术研究所
中国印钞造币总公司
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Priority to CN201410059873.XA priority Critical patent/CN103791452B/en
Publication of CN103791452A publication Critical patent/CN103791452A/en
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Publication of CN103791452B publication Critical patent/CN103791452B/en

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Abstract

The invention provides a kind of light-source system, including: light source main control module, light emitting device driver circuit, optical fiber coupling component, photoelectric detecting parts, bundling optical fiber and bundling optical fiber terminal.The luminescent device luminescence light intensity detected is converted to the signal of telecommunication and transmits to light source main control module by photoelectric detecting parts, when output intensity deviation reference value certain limit, light source main control module is automatically adjusted the output curtage of light emitting device driver circuit, make luminescent device luminous intensity maintain in reference value certain limit all the time, finally ensure the constant of source device output optical power.A kind of surface installed in optical fiber coupling component employs circle lens and bundling optical fiber end protective cover scribbles the structure that the lens pillar of reflectance coating combines, the light sending light source body internal illumination device carries out converging and even light, and flow through cylindrical mirror minute surface by installing air curtain device control compressed air in bundling optical fiber terminal, the problem solving cylindrical mirror minute surface real time cleaning.

Description

Light-source system

Technical field

The present invention relates to note-printing technique field, in particular to a kind of light-source system.

Background technology

One or more optical security features are included (such as ultraviolet at present on the various marketable securities of circulation Fluorescence, infrared signature etc.).Detection to these optical security features will use different types of light Source (such as ultraviolet light, infrared light etc.) excites.Owing to various luminescent devices (such as LED) are in work Being continually changing along with operating temperature or ambient temperature during work, its luminous power also can become Change, ultimately result in the change of optical security features testing result.Under normal circumstances, can be at light-source system Middle use attemperating unit solves this problem, but the use of this device will increase considerably light source undoubtedly Volume and manufacturing cost.The restriction being additionally, since testing conditions generally requires light source away from reality inspection Location is put, and this occurs in that the most again light conducting problem.Therefore, summary problem, need a kind of energy Meet the device of relatively long-distance transmissions light and ensure the light feedback control loop of light stability luminous power.

Summary of the invention

The present invention is based on above-mentioned technical problem, it is proposed that a kind of new light-source system, can meet relatively Long-distance transmissions light also can ensure that light source has stable luminous power.

According to an aspect of the invention, it is provided a kind of light-source system, including: luminescent device drives Circuit, is connected to optical fiber coupling component, for driving the luminescent device in described optical fiber coupling component to send out Light;Photoelectric detecting parts, for being converted to telecommunications by the luminous light intensity of the described luminescent device detected Number and by the described signal of telecommunication transmit to light source main control module;Described optical fiber coupling component, coupled to boundling Optical fiber, the light that described optical fiber coupling component sends passes through fiber optic conduction to bundling optical fiber terminal;Described Bundling optical fiber terminal, receives from the light of described bundling optical fiber and described light has been radiated at valency card On certificate, for detecting the optical security features on described marketable securities;Described light source main control module, uses Drive the luminescent device in described optical fiber coupling component luminous in controlling described light emitting device driver circuit, And the luminous light intensity value deviation of the described luminescent device detected at described photoelectric detecting parts presets and sends out During light intensity value, it is automatically adjusted output electric current and/or the output electricity of described light emitting device driver circuit Pressure, to adjust the luminous light intensity value of described luminescent device.

By technique scheme, in the luminous light intensity value deviation luminous intensity reference value detected in real time Time (this reference value can be manually set), the luminous light intensity of luminescent device can be automatically adjusted, so that luminous Device luminous intensity maintains in reference value certain limit all the time, thus ensures that light source power is stable, and And simple in construction, cost of manufacture is low.

In technique scheme, it is preferred that set above the cylindrical mirror of described bundling optical fiber terminal Being equipped with air curtain device, described air curtain device includes air inlet, is provided with multichannel resistance at described air inlet Equal gas circuit, equalizing warehouse and gas outlet, air-flow enters from described air inlet, by multichannel gas circuit Lead to described equalizing warehouse to carry out uniformly, and the air-flow after uniformly is flowed out, to blow from described gas outlet Walk the dust of the minute surface to described cylindrical mirror that falls.

The bundling optical fiber other end is stable in the interior and linear close-packed arrays of bundling optical fiber terminal to form one Linear type uniform light spots.The cylindrical mirror installed by bundling optical fiber terminal side hot spot converged with Raising optical power density also can be by adjusting cylindrical mirror position to adjust spot width.By at concentrated light Fine terminal is installed a kind of special gas curtain (air drain) device control compressed air and is flow through bundling optical fiber terminal The direction of front end cylindrical mirror minute surface uniformly air pressure, to solve the problem of cylindrical mirror minute surface real time cleaning, Improve fineness and the transparency of cylindrical mirror minute surface.

In technique scheme, it is preferred that described gas outlet is a slit, the length of described slit Identical with the length of described cylindrical mirror.Owing to the length of gas outlet and the length of cylindrical mirror are identical, therefore The all scopes that can make cylindrical mirror can be cleaned to.And owing to slit width keeps one at length direction Cause, so, the air pressure of equalizing warehouse also can keep consistent with air velocity at slit length directional spreding.

In any of the above-described technical scheme, it is preferred that described optical fiber coupling component also includes: luminous organ Part installation base plate, the circle lens being installed on circle lens fixture, bundling optical fiber socket, bundling optical fiber End protective cover, is successively set in the axial direction of described optical fiber coupling component, and wherein, described circle lens is to institute The luminescence stating luminescent device is converged, and is positioned at described optical fiber coupling part at described bundling optical fiber socket The end of part enclosure forms a circular light spot;Described light emitting device mounting is used for fixing Described luminescent device;Described bundling optical fiber socket is used for connecting described bundling optical fiber.

In technique scheme, it is preferred that inside described bundling optical fiber end protective cover, a column is set Mirror, described prismatic mirror one end flushes with described bundling optical fiber socket inner face, the other end and described boundling The end face of optical fiber is glued;Described luminescent device, described circle lens, described prismatic mirror and described boundling The central coaxial conllinear of optical fiber one end.

In technique scheme, it is preferred that the outer surface at described prismatic mirror scribble reflectance coating or Post reflectance coating, carry out even light with the light realizing described luminescent device is sent.

Due in employing circle lens and bundling optical fiber end protective cover in optical fiber coupling component design the one of installation Kind of surface scribbles the structure that the lens pillar of reflectance coating (or posting reflectance coating) combines, therefore, The light that light source body internal illumination device is sent can carry out converge and even light, with ensure light source body with The efficient coupling of optical fiber.

Accompanying drawing explanation

Fig. 1 shows the structure chart of light-source system according to an embodiment of the invention;

Fig. 2 shows the optical fiber coupling component in light-source system according to an embodiment of the invention and photoelectricity The structure chart of exploring block;

Fig. 3 shows the structure chart of bundling optical fiber terminal according to an embodiment of the invention;

Fig. 4 shows the scheme of installation of air curtain device according to an embodiment of the invention;

Fig. 5 shows the schematic diagram of air curtain device according to an embodiment of the invention.

Detailed description of the invention

In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached The present invention is further described in detail by figure and detailed description of the invention.It should be noted that not In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.

Elaborate a lot of detail in the following description so that fully understanding the present invention, but, The present invention can implement to use other to be different from other modes described here, therefore, and the present invention Protection domain do not limited by following public specific embodiment.

Fig. 1 shows the structure chart of light-source system according to an embodiment of the invention.

As it is shown in figure 1, light-source system according to an embodiment of the invention, including: light source body 1, The bundling optical fiber 6 being connected with light source body 1 and the bundling optical fiber being connected with bundling optical fiber 6 other end Terminal 7, wherein, light source body 1 can include light source main control module 2, light emitting device driver circuit 3, optical fiber coupling component 4, photoelectric detecting parts 5.

Light source main control module 2 is used for controlling described light emitting device driver circuit 3 and drives optical fiber coupling component Luminescent device in 4 is luminous, and the current lighting intensity value of record luminescent device, and at photoelectricity When the luminous light intensity value of the luminescent device that exploring block 5 detects deviates described current lighting intensity value, It is automatically adjusted output electric current and/or the output voltage of light emitting device driver circuit 3, to adjust luminous organ The luminous light intensity value of part;Described light emitting device driver circuit 3 is connected to optical fiber coupling component 4, is used for Drive the luminescent device in described optical fiber coupling component 4 luminous;Photoelectric detecting parts 5 will be for detecting To the luminous light intensity of described luminescent device be converted to the signal of telecommunication and by the transmission of the described signal of telecommunication to described light Source main control module 2;Described optical fiber coupling component 4 coupled to bundling optical fiber 6, described optical fiber coupling part The light that part 4 sends is by fiber optic conduction to described bundling optical fiber 6 terminal;Described bundling optical fiber 6 is eventually End receives and from the light of described bundling optical fiber 6 and is radiated on marketable securities by described light, is used for Detect the optical security features on described marketable securities.

By technique scheme, in the luminous light intensity value deviation luminous intensity reference value detected in real time Time (this reference value can be manually set), the luminous light intensity of luminescent device can be automatically adjusted, so that luminous Device luminous intensity maintains in reference value certain limit all the time, and simple in construction, cost of manufacture Low.It (can be current lighting intensity that luminous light intensity value at luminescent device deviates preset emission intensity level Value) time, light source main control module sends control signal to light emitting device driver circuit, to regulate luminous organ The output electric current of part drive circuit and/or output voltage, thus ensure that light source power is stable.

As it is shown in figure 1, light source body can also include light source regulating key 8 and digital display module 9.It is luminous that light source main control module 2 controls light emitting device driver circuit 3 driven for emitting lights device, and can lead to Cross light source regulating key 8 and regulate Output optical power.Light coupled to boundling by optical fiber coupling component 4 Optical fiber 6, and by fiber optic conduction to bundling optical fiber terminal 7, it is used for detecting various light on marketable securities Learn exciting of anti-counterfeiting characteristic.

The luminescent device luminescence light intensity detected is converted to the signal of telecommunication and transmits extremely by photoelectric detecting parts 5 Light source main control module 2;It is luminous that light source main control module 2 can record and store current luminescent device automatically Intensity level is as reference value, it is possible to be manually set this reference value;Photoelectric detecting parts 5 real-time detection is sent out Optical device output intensity changes;When output intensity deviation reference value certain limit (such as 5%), Light source main control module 2 is automatically adjusted the output curtage of light emitting device driver circuit, so that luminous Device luminous intensity maintains in reference value certain limit all the time.

As in figure 2 it is shown, described optical fiber coupling component 4 also includes: light emitting device mounting 11, The circle lens 15 that is installed on circle lens fixture 16, bundling optical fiber socket 17, bundling optical fiber head protect Set 18, is successively set in the axial direction of described optical fiber coupling component 4, wherein, and described circle lens 15 Luminescence to described luminescent device 12 is converged, and is positioned at described at described bundling optical fiber socket 17 The end of optical fiber coupling component 4 enclosure forms a circular light spot;Described luminescent device is installed Substrate 11 is used for fixing described luminescent device 12;Described bundling optical fiber socket 17 is used for connecting described Bundling optical fiber 6.

Light emitting device mounting 11 is fixed on optical fiber coupling component shell dissipating for luminescent device 12 Heat;Luminescent device 12 luminescence is converged and is positioned at light at bundling optical fiber socket 17 by circle lens 15 A Homogeneous Circular hot spot is formed, this circular light spot straight at fine coupling unit shell 10 internal end surface The internal diameter of footpath ≈ bundling optical fiber socket 17.

Described photoelectric detecting parts 5 includes the light electrical resistivity survey being fixed on photodetector installation base plate 14 Survey device 13;Photodetector installation base plate is fixed on the shell of optical fiber coupling component;Photodetector 13 install near the side of luminescent device, effectively to detect the change of luminescent device 12 output intensity, And luminescence light intensity is converted to the signal of telecommunication by wire transmission to light source main control module 2.Light source master control mould Block 2 Real-time Collection light source drive current value and luminous light intensity value are also transferred to digital display module 9, with Show above-mentioned numerical value.

In technique scheme, it is preferred that arrange one inside described bundling optical fiber end protective cover 18 Prismatic mirror 19, described prismatic mirror 19 one end flushes, separately with described bundling optical fiber socket 17 inner face One end is glued with the end face of described bundling optical fiber 6;Described luminescent device 12, described circle lens 15, Described prismatic mirror 19 and the central coaxial conllinear of described bundling optical fiber 6 one end.

Therefore, one end of the internal prismatic mirror 19 placed of bundling optical fiber end protective cover 18 is inserted with bundling optical fiber Mouth 17 inner faces flush, and the other end is glued with the end face of bundling optical fiber 6;The external diameter of this prismatic mirror 19 =bundling optical fiber socket 17 internal diameter-0.1mm, with the bundling optical fiber socket 17 coaxial conllinear of inner diameter central.

One end of circular bundling optical fiber 6 is stable in circular bundling optical fiber end protective cover 18 inside and column Mirror 19 end face is glued;The bundling optical fiber end face center of circle and bundling optical fiber socket 17 inner diameter central are coaxially altogether Line;Bundling optical fiber end protective cover 18 precession to behind bundling optical fiber socket 17 inside, luminescent device 12, Circle lens 15, prismatic mirror 19 and the central coaxial conllinear of bundling optical fiber 6 one end three.

Owing to employing in circle lens 15 and bundling optical fiber end protective cover 18 in optical fiber coupling component 4 design A kind of surface installed scribbles the knot that the lens pillar of reflectance coating (or posting reflectance coating) combines Structure, therefore, the light sending light source body internal illumination device 12 can carry out converging and even light, with Ensure the efficient coupling of light source body and optical fiber.

Bundling optical fiber 6 other end is stable in the interior and linear close-packed arrays of bundling optical fiber terminal 20 to be formed Straight line type uniform light spots.As it is shown on figure 3, the post installed by bundling optical fiber terminal 20 side Face mirror 21 converge hot spot to improve optical power density and can by adjust cylindrical mirror 21 position with Adjust spot width.

As shown in Figure 4, the cylindrical mirror 21 in described bundling optical fiber 6 terminal is provided above gas curtain dress Put 22, as it is shown in figure 5, air curtain device 22 include air inlet 23, be provided with at air inlet 23 many Gas circuit 24, equalizing warehouse 25 and the gas outlet 26 that roadlock power is equal, air-flow enters from described air inlet Enter, lead to described equalizing warehouse by multichannel gas circuit and carry out uniformly, and by the air-flow after uniformly from described go out QI KOU flows out, to blow away the dust of the minute surface to described cylindrical mirror 21.

Therefore, in the present embodiment, by installing a kind of special gas curtain in bundling optical fiber terminal 20 (air drain) device controls compressed air and flows through the side of bundling optical fiber terminal 20 front end cylindrical mirror 21 minute surface To the most uniformly air pressure, to solve the problem of cylindrical mirror 21 minute surface real time cleaning, improve cylindrical mirror 21 The fineness of minute surface and transparency.

In technique scheme, it is preferred that as shown in Figure 4, described gas outlet 26 is one narrow Seam, the length of described slit is identical with the length of described cylindrical mirror 21.Due to gas outlet length with The length of cylindrical mirror 21 is identical, and all scopes of cylindrical mirror 21 therefore can be made to be cleaned to.And Owing to slit width keeps consistent at length direction, so, the air pressure of equalizing warehouse and air velocity are narrow Seam length direction distribution also can keep consistent.

From figure 5 it can be seen that in the structure of gas curtain (air drain) device 22, pressed gas from Air inlet 23 enters, and produces the gas circuit 24 that two-way resistance is equal in porch, and two-way gas circuit 24 is each From being divided into the air flue that two-way resistance is equal, produce the air flue that four roadlock power are equal in the second level;Air-flow leads to Cross air flue and enter air pressure equalizing warehouse 25;Owing to the width of slit 26 keeps consistent at length direction, institute With, air pressure and the air velocity of air pressure equalizing warehouse 25 also can keep one at slit length directional spreding Cause.Those skilled in that art should be appreciated that, although have employed two-stage current-sharing dividing potential drop, root in Figure 5 Multi-level flow equalization dividing potential drop can also be carried out according to needs.

It is described in detail according to technical scheme above in association with accompanying drawing, in the light source system of the present invention The luminescent device luminescence light intensity detected is converted to the signal of telecommunication and transmits extremely by the photoelectric detecting parts in system Light source main control module;Light source main control module can record and store current luminescent device luminous intensity automatically Value is as reference value, it is possible to be manually set this reference value;Photoelectric detecting parts real-time detection luminescent device Output intensity changes;When output intensity deviation reference value certain limit, light source main control module is adjusted automatically The output curtage of joint light emitting device driver circuit, so that luminescent device luminous intensity maintains all the time In reference value certain limit;In optical fiber coupling component design, employ lens and bundling optical fiber head protects A kind of surface installed in set scribbles the knot that reflectance coating (or posting reflectance coating) lens pillar combines Structure, the light sending light source body internal illumination device carries out converging and even light, to ensure light source body Efficient coupling with optical fiber;In addition, designed by bundling optical fiber end side, use a kind of special Different air curtain device achieves the real time cleaning to bundling optical fiber terminal.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention Protection domain within.

Claims (8)

1. a light-source system, it is characterised in that including:
Light emitting device driver circuit, is connected to optical fiber coupling component, is used for driving described optical fiber coupling component In luminescent device luminous;
Photoelectric detecting parts, for being converted to the signal of telecommunication by the luminous light intensity of the described luminescent device detected And the described signal of telecommunication is transmitted to light source main control module;
Described optical fiber coupling component, coupled to bundling optical fiber, and the light that described optical fiber coupling component sends leads to Cross fiber optic conduction to bundling optical fiber terminal;
Described bundling optical fiber terminal, receives and from the light of described bundling optical fiber and is radiated at by described light On marketable securities, for detecting the optical security features on described marketable securities;
Described light source main control module, is used for controlling described light emitting device driver circuit and drives the coupling of described optical fiber Luminescent device in parts is luminous, and the described luminescent device detected at described photoelectric detecting parts During luminous light intensity value deviation preset emission intensity level, regulate the output electric current of described light emitting device driver circuit And/or output voltage, to adjust the luminous light intensity value of described luminescent device;
Cylindrical mirror in described bundling optical fiber terminal is provided above air curtain device, is used for blowing away described cylinder Dust on mirror.
Light-source system the most according to claim 1, it is characterised in that described air curtain device include into QI KOU, at described air inlet, be provided with the equal gas circuit of multichannel resistance, equalizing warehouse and gas outlet, air-flow from Described air inlet enters, leads to described equalizing warehouse by gas circuit described in multichannel and carry out uniformly, and will uniformly After air-flow flow out from described gas outlet, to blow away the dust of the minute surface to described cylindrical mirror.
Light-source system the most according to claim 2, it is characterised in that described gas outlet is a slit.
Light-source system the most according to claim 3, it is characterised in that the length of described slit and institute The length stating cylindrical mirror is identical.
Light-source system the most according to any one of claim 1 to 4, it is characterised in that described light Fine coupling unit also includes: light emitting device mounting, the circle lens being installed on circle lens fixture, Bundling optical fiber socket, bundling optical fiber end protective cover, be successively set in the axial direction of described optical fiber coupling component, Wherein,
The luminescence of described luminescent device is converged by described circle lens, and in described bundling optical fiber socket position A circular light spot is formed in the end of described optical fiber coupling component enclosure;
Described light emitting device mounting is used for fixing described luminescent device;
Described bundling optical fiber socket is used for connecting described bundling optical fiber.
Light-source system the most according to claim 5, it is characterised in that protect at described bundling optical fiber head Set is internal arranges a prismatic mirror, and described prismatic mirror one end flushes, separately with described bundling optical fiber socket inner face One end is glued with the end face of described bundling optical fiber.
Light-source system the most according to claim 6, it is characterised in that described luminescent device, described Circle lens, described prismatic mirror and the central coaxial conllinear of described bundling optical fiber one end.
Light-source system the most according to claim 6, it is characterised in that in the appearance of described prismatic mirror Topcoating has reflectance coating or posts reflectance coating, carries out even light with the light realizing sending described luminescent device.
CN201410059873.XA 2014-02-21 2014-02-21 Light-source system CN103791452B (en)

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Application Number Priority Date Filing Date Title
CN201410059873.XA CN103791452B (en) 2014-02-21 2014-02-21 Light-source system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410059873.XA CN103791452B (en) 2014-02-21 2014-02-21 Light-source system

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CN103791452B true CN103791452B (en) 2017-01-04

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060163504A1 (en) * 2003-01-23 2006-07-27 Aruze Corp. Identification sensor
CN101761876B (en) * 2009-09-09 2012-03-28 海洋王照明科技股份有限公司 Optical fiber illumination system with optical feedback return circuit
DE102009058804A1 (en) * 2009-12-18 2011-06-22 Giesecke & Devrient GmbH, 81677 Sensor for checking value documents
CN103578174B (en) * 2012-07-23 2015-12-16 聚龙股份有限公司 A kind of pick-up unit utilizing light reflection principle to detect bank note optical signature

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