CN113339762A - Infrared detection multi-tube laser conduction lighting system - Google Patents

Infrared detection multi-tube laser conduction lighting system Download PDF

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Publication number
CN113339762A
CN113339762A CN202110786759.7A CN202110786759A CN113339762A CN 113339762 A CN113339762 A CN 113339762A CN 202110786759 A CN202110786759 A CN 202110786759A CN 113339762 A CN113339762 A CN 113339762A
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China
Prior art keywords
infrared
light
optical fiber
switch
red light
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CN202110786759.7A
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Chinese (zh)
Inventor
刘浪
侯杰
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Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
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Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
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Priority to CN202110786759.7A priority Critical patent/CN113339762A/en
Publication of CN113339762A publication Critical patent/CN113339762A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0457—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/048—Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/10—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of the optical fibres type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention belongs to the technical field of illumination, and particularly discloses an infrared detection multi-tube laser conduction illumination system which comprises a multi-tube laser conduction illumination system, an infrared detection system, a control circuit, a power supply unit and a switch system; optical fiber conduction is adopted, photoelectric separation is realized, and the illumination safety problem is improved; transmission type excitation is adopted, so that the light emitting efficiency and the service life of a blue light LD are improved, and the safety is improved; by adopting a plurality of blue light LDs, single-fiber energy can be effectively improved, the number of optical fibers is reduced, and construction cost is saved; an infrared detection system is adopted, an independent infrared optical fiber is adopted, the light emitting condition can be monitored in time, if the transmission optical fiber is broken, the photoelectric element PD cannot receive the red light reflected by the third light filtering system, and therefore a power supply disconnection instruction can be given, and the safety is improved; the switch system adopts a passive remote switch technology, realizes a non-electric control system, and is safer and more convenient to use.

Description

Infrared detection multi-tube laser conduction lighting system
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to an infrared detection multi-tube laser conduction illumination system.
Background
The traditional illumination mainly adopts the mode that electricity is arranged in an area needing illumination, electric energy is converted into light through a photoelectric conversion chip, illumination is carried out after photoelectric conversion is achieved, safety accidents are easily caused due to the fact that photoelectric conversion is carried out in the illumination area, laser light conducts illumination, after the photoelectric conversion is achieved remotely, light with specific wavelength is transmitted to a place needing to be applied through optical fibers, the light with the specific wavelength is converted into needed white light through a fluorescent powder technology, and therefore electricity is not used in a use area, and photoelectric separation is achieved.
The laser light conduction illumination mainly uses light conduction, as the optical fiber adopts a quartz optical fiber, the fiber core is small, the optical fiber can be broken under the action of external force, after the optical fiber is broken, the whole illumination is in a non-illumination state, if a power supply is not cut off in time, light with specific wavelength can be lightened for a long time at the breaking position, the breaking position is in a closed state, energy can not be completely released, the overheating is easily caused under the long-time state, the heat reaches a certain level, the whole illumination system can be damaged, and under the condition of overhigh heat, a fire disaster can be caused or peripheral substances can be damaged.
Disclosure of Invention
The invention aims to provide an infrared detection multi-tube laser conduction illumination system to solve the technical problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: an infrared detection multi-tube laser conduction lighting system comprises a multi-tube laser conduction lighting system, an infrared detection system, a control circuit, a power supply unit and a switch system;
the multi-tube laser conduction illumination system comprises a plurality of blue light emitting units, a first filtering system, a first coupling lens, a first transmission optical fiber, a second collimating lens, a diffusion lens and a fluorescent cap; each blue light emitting unit comprises a blue LD, a shaping lens, a first collimating lens and a reflector; the first transmission optical fiber comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC, and the output end is provided with a ceramic ferrule PC; blue light irradiated by each blue light LD enters a first transmission optical fiber through a shaping lens, a first collimating lens, a reflector, a first filtering system and a first coupling lens respectively and is transmitted to the output end of the first transmission optical fiber through the first transmission optical fiber; each reflector reflects the blue light of the corresponding blue LD to the first filtering system; the first light filtering system reflects the plurality of blue light beams to the first coupling lens; the inclination angle of the bevel edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the first transmission optical fiber is provided with a second collimating lens, a third filtering system, a diffusion lens and a fluorescent cap, and blue light output by the ceramic ferrule PC passes through the second collimating lens and the third filtering system and is converted by the diffusion lens to irradiate the fluorescent cap and excite white light;
the infrared detection system comprises a first infrared LD, a third collimating lens, a second light filtering system, a third light filtering system and a first photoelectric element PD, and red light irradiated by the first infrared LD enters a first transmission optical fiber through the third collimating lens, the second light filtering system, the first light filtering system and the first coupling lens respectively and is transmitted to the output end of the first transmission optical fiber through the first transmission optical fiber; the second filter system reflects the red light of the first infrared LD to the first filter system and transmits the first filter system; red light output by the output end of the first transmission optical fiber passes through the second collimating lens and is reflected back by the third light filtering system, the reflected red light is transmitted to the first photoelectric element PD, and the first photoelectric element PD performs echo detection on the reflected red light;
the infrared detection system is used for transmitting a signal detected by the first photoelectric element PD to the control circuit; the control circuit outputs a control signal to control the power supply unit to power off and supply the blue LD after judging according to the red light echo detection of the infrared detection system; when the first photoelectric element PD cannot receive the red light reflected by the third light filtering system, the power supply is controlled to be switched off;
the first light filtering system can reflect blue light and can also transmit red light; the second light filtering system can reflect red light and can also transmit the red light; the third light filtering system can reflect red light and can also transmit blue light;
the switch system is a passive switch, an active switch or a time control switch; the power supply and the power off of the infrared detection multi-tube laser conduction illumination system are realized by controlling the on and off of the switch system.
Further, the passive switch is a first passive switch or a second passive switch.
Further, the first passive switch includes a second infrared LD, a fourth collimating lens, a second coupling lens, a second transmission fiber, a first switch unit, a third coupling lens, and a second photoelectric element PD; red light irradiated by the second infrared LD enters a second transmission optical fiber through a fourth collimating lens and a second coupling lens respectively and is transmitted to a first switch unit through the second transmission optical fiber, a first reflection lens is arranged in the first switch unit, and whether red light of the second infrared LD is reflected to a second photoelectric element PD is controlled by adjusting the angle of the first reflection lens; when the second photoelectric element PD receives the red light of the second infrared LD, the first passive switch is in an on state, and when the second photoelectric element PD does not receive the red light of the second infrared LD, the first passive switch is in an off state.
Further, the second passive switch includes a third infrared LD, a fourth optical filtering system, a fourth coupling lens, a third transmission fiber, a second switch unit, and a third photoelectric element PD; red light irradiated by the third infrared LD enters a third transmission optical fiber through a fourth optical filtering system and a fourth coupling lens respectively and is transmitted to a second switch unit through the third transmission optical fiber, a second reflector is arranged in the second switch unit, and whether red light of the third infrared LD is reflected to a third photoelectric element PD is controlled by adjusting the angle of the second reflector; when the third photoelectric element PD receives the red light of the third infrared LD, the second passive switch is in an on state, and when the third photoelectric element PD does not receive the red light of the third infrared LD, the second passive switch is in an off state;
the fourth filter system can transmit the red light irradiated by the third infrared LD, and can also reflect the red light reflected by the second switch unit to the third photoelectric element PD.
Further, the active switch is a manual power switch.
Further, the time control switch controls the power supply to be turned on or turned off by setting the illumination time.
Further, the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5 mm.
Furthermore, the fluorescent cap is made of silica gel and yellow fluorescent powder, the length of the fluorescent cap is 15-30mm, and the diameter of the fluorescent cap is 10-20 mm.
Further, the blue light wavelength of the blue light LD is 450nm +/-50 nm.
According to the infrared detection system, the single infrared optical fiber is adopted, the light emitting condition can be monitored in time, and if the transmission optical fiber is broken, the first photoelectric element PD cannot receive the red light reflected by the third light filtering system, so that a power supply disconnection instruction can be given.
The infrared detection multi-tube laser conduction illumination system has the following advantages:
1. and optical fiber conduction is adopted, so that photoelectric separation is realized, and the illumination safety problem is improved.
2. The blue light wavelength is 450nm +/-50 nm, the power is high, and the quartz optical fiber is adopted for transmission, so that the optical fiber transmission illumination transmission distance is increased. The wavelength of blue light is 450nm +/-50 nm, and the single power can reach about 3-5W; the quartz fiber has a small loss value for light with a wavelength of 450nm +/-50 nm, and the loss of the quartz fiber is only about 6% of that of the plastic fiber, so that the quartz fiber can transmit a longer distance.
3. And by adopting transmission excitation, the light-emitting efficiency and the service life of the blue light LD are improved, and the safety is also improved. The output end adopts a diffusion lens to expand light, so that the light can be dispersed at various angles, the energy is dispersed in a space angle, the energy received by each unit point is small, the temperature is low, and the silica gel fluorescent cap can be adopted for excitation; in addition, the light diffusion by adopting the diffusion lens can improve the safety, and potential safety hazards can not be caused even if the fluorescent cap falls off due to low unit energy.
4. By adopting the ceramic ferrule APC and the ceramic ferrule PC, laser loss is small when laser is transmitted, the light emitting efficiency is high, and the light emitting efficiency is highest when the inclined angle of the inclined edge of the blue light incidence end of the ceramic ferrule APC is 7-9 degrees.
5. When the thickness of the diffusion lens is 3-5mm, the laser excitation efficiency is highest.
6. A plurality of blue light LDs are adopted, single fiber energy can be effectively improved, the number of optical fibers is reduced, and construction cost is saved.
7. And an infrared detection system is adopted, so that the light emitting condition can be monitored in time, and the safety is improved. Meanwhile, the infrared wavelength energy is higher, and a system is formed independently, so that the monitoring is more accurate.
8. The switch system adopts a passive remote switch technology, realizes a non-electric control system, and is safer and more convenient to use. Meanwhile, a time control switch and a manual power switch can be used, and the cost is low.
The infrared detection multi-tube laser conduction lighting system has the advantages of high light emitting efficiency, convenience in use, high safety and the like.
Drawings
FIG. 1 is a schematic structural diagram of an infrared detection multi-tube laser conduction illumination system of the present invention;
FIG. 2 is a schematic structural diagram of an infrared detection multi-tube laser conduction illumination system using a first passive switch according to the present invention;
FIG. 3 is a schematic diagram of an infrared detection multi-tube laser conduction illumination system employing a second passive switch according to the present invention;
FIG. 4 is a schematic structural diagram of an infrared detection multi-tube laser conduction illumination system using a manual power switch according to the present invention;
fig. 5 is a schematic structural diagram of an infrared detection multi-tube laser conduction illumination system adopting a time control switch.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: 1. a blue LD; 2. a shaping lens; 3. a first collimating lens; 4. a mirror; 5. a first filtering system; 6. a first coupling lens; 7. a first transmission optical fiber; 71. the ceramic ferrule APC; 72. a ceramic ferrule PC; 8. a second collimating lens; 9. a diffusion lens; 10. a fluorescent cap; 11. a first infrared LD; 12. a third collimating lens; 13. a second filtering system; 14. a third filtering system; 15. a first photoelectric element PD; 16. a control circuit; 17. a power supply unit; 18. a switching system; 19. a second infrared LD; 20. a fourth collimating lens; 21. a second coupling lens; 22. a second transmission optical fiber; 23. a first switch unit; 231. a first mirror plate; 24. a third coupling lens; 25. a second photoelectric element PD; 26. a third infrared LD; 27. a fourth filtering system; 28. a fourth coupling lens; 29. a third transmission fiber; 30. a second switching unit; 301. a second mirror; 31. a third photoelectric element PD; 32. a manual power switch; 33. a time-controlled switch.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1 to 5: an infrared detection multi-tube laser conduction lighting system comprises a multi-tube laser conduction lighting system, an infrared detection system, a control circuit 16, a power supply unit 17 and a switch system 33; the multi-tube laser conduction illumination system comprises a plurality of blue light emitting units, a first filtering system 5, a first coupling lens 6, a first transmission optical fiber 7, a second collimating lens 8, a diffusion lens 9 and a fluorescent cap 10; each blue light emitting unit includes a blue LD1, a shaping lens 2, a first collimating lens 3, and a reflecting mirror 4; the first transmission optical fiber 7 is a quartz optical fiber and comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC 71, and the output end is provided with a ceramic ferrule PC 72; blue light irradiated by each blue light LD1 enters a first transmission optical fiber 7 through a shaping lens 2, a first collimating lens 3, a reflector 4, a first filtering system 5 and a first coupling lens 6 respectively and is transmitted to the output end of the first transmission optical fiber 7 through the first transmission optical fiber 7, and the wavelength of the blue light is 450nm +/-50 nm; each mirror 4 reflects the blue light of the corresponding blue LD1 to the first filter system 5; the first filter system 5 reflects the plurality of blue light beams to the first coupling lens 6; the inclined angle of the inclined edge of the blue light incident end of the ceramic ferrule APC 71 is 7-9 degrees; the output end of the first transmission optical fiber 7 is provided with a second collimating lens 8, a third filtering system 14, a diffusion lens 9 and a fluorescent cap 10, and blue light output by the ceramic ferrule PC 72 passes through the second collimating lens 8 and the third filtering system 14 and is converted by the diffusion lens 9 to irradiate the fluorescent cap 10 and excite white light; the diffusion lens 9 is a plano-concave lens with the thickness of 3-5 mm; the fluorescent cap 10 is made of silica gel and yellow fluorescent powder, and is made of the silica gel and the yellow fluorescent powder according to a certain proportion through a mould, the length of the fluorescent cap 10 is 15-30mm, and the diameter of the fluorescent cap 10 is 10-20mm
The infrared detection system comprises a first infrared LD 11, a third collimating lens 12, a second optical filtering system 13, a third optical filtering system 14 and a first photoelectric element PD15, wherein red light irradiated by the first infrared LD 15 enters the first transmission optical fiber 7 through the third collimating lens 12, the second optical filtering system 13, the first optical filtering system 5 and the first coupling lens 6 respectively, and is transmitted to the output end of the first transmission optical fiber 7 through the first transmission optical fiber 7; the second filter system 13 reflects the red light of the first infrared LD 11 to the first filter system 5 and transmits the first filter system 5; red light output by the output end of the first transmission optical fiber 7 passes through the second collimating lens 8 and is reflected back by the third optical filtering system 14, the reflected red light is transmitted to the first photoelectric element PD15, and the first photoelectric element PD15 performs echo detection on the reflected red light;
the infrared detection system is used for transmitting a signal detected by the first photoelectric element PD15 to the control circuit 16; after the control circuit 16 determines according to the red light echo detection of the infrared detection system, it outputs a control signal to control the power supply unit 17 to power off and supply the blue light LD 1; when the first photoelectric element PD15 does not receive the red light reflected by the third optical filter system 14, the power supply is controlled to be switched off;
the first light filtering system 5 can reflect blue light and can also transmit red light; the second filter system 13 can reflect red light and can also transmit red light; the third filter system 14 can reflect red light and can also transmit blue light;
the switching system 18 is a passive switch or an active switch or a time-controlled switch; the power supply and the power off of the infrared detection multi-tube laser conduction illumination system are realized by controlling the on and off of the switch system.
Specifically, the blue LD1, the first infrared LD 11, the first photoelectric element PD15, the power supply unit 17, and the switching system 18 are each connected to the control circuit 16.
Specifically, the passive switch is a first passive switch or a second passive switch; the active switch is a manual power switch 32; the time switch 33 controls the power on or off by setting the time of illumination.
The red light output from the output end of the first transmission optical fiber 7 of the present invention is reflected by the third optical filter system 14, and passes through the second collimating lens 8, the first transmission optical fiber 7, the first coupling lens 6, the first optical filter system 5, and the second optical filter system 13, and is transmitted to the first photoelectric element PD 15.
Example 1
As shown in fig. 2: the first passive switch includes a second infrared LD19, a fourth collimating lens 20, a second coupling lens 21, a second transmission fiber 22, a first switching unit 23, a third coupling lens 24, and a second photoelectric element PD 25; the red light irradiated by the second infrared LD19 enters the second transmission fiber 22 through the fourth collimating lens 20 and the second coupling lens 21, and is transmitted to the first switch unit 23 through the second transmission fiber 22, the first switch unit 23 is provided with the first reflection lens 231 therein, and the angle of the first reflection lens 231 is adjusted to control whether the red light of the second infrared LD19 is reflected to the second photoelectric element PD 25; when the second photoelectric element PD 25 receives the red light of the second infrared LD19, the first passive switch is in an on state, and when the second photoelectric element PD 25 does not receive the red light of the second infrared LD19, the first passive switch is in an off state.
Example 2
As shown in fig. 3: the second passive switch includes a third infrared LD 26, a fourth optical filter system 27, a fourth coupling lens 28, a third transmission fiber 29, a second switching unit 30, and a third photoelectric element PD 31; red light irradiated by the third infrared LD 26 enters a third transmission fiber 29 through a fourth filter system 27 and a fourth coupling lens 28, and is transmitted to a second switch unit 30 through the third transmission fiber 29, a second mirror 301 is arranged in the second switch unit 30, and whether the red light of the third infrared LD 26 is reflected to a third photoelectric element PD 31 is controlled by adjusting the angle of the second mirror 301; when the third photoelectric element PD 31 receives the red light of the third infrared LD 26, the second passive switch is in an on state, and when the third photoelectric element PD 31 does not receive the red light of the third infrared LD 26, the second passive switch is in an off state.
The fourth filter system 26 can transmit the red light irradiated by the third infrared LD 26, and can also reflect the red light reflected by the second switch unit 30 to the third photoelectric element PD 31.
Example 3
The manual power switch 32 realizes the power-off and power supply of the infrared detection multi-tube laser conduction lighting system of the invention by manually controlling the on and off of the switch system, as shown in fig. 4.
Example 4
The time switch 33 controls the power on or off by setting the time of illumination, as shown in fig. 5.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (9)

1. An infrared detection multi-tube laser conduction lighting system is characterized in that: the system comprises a multi-tube laser conduction lighting system, an infrared detection system, a control circuit, a power supply unit and a switch system;
the multi-tube laser conduction illumination system comprises a plurality of blue light emitting units, a first filtering system, a first coupling lens, a first transmission optical fiber, a second collimating lens, a diffusion lens and a fluorescent cap; each blue light emitting unit comprises a blue LD, a shaping lens, a first collimating lens and a reflector; the first transmission optical fiber comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC, and the output end is provided with a ceramic ferrule PC; blue light irradiated by each blue light LD enters a first transmission optical fiber through a shaping lens, a first collimating lens, a reflector, a first filtering system and a first coupling lens respectively and is transmitted to the output end of the first transmission optical fiber through the first transmission optical fiber; each reflector reflects the blue light of the corresponding blue LD to the first filtering system; the first light filtering system reflects the plurality of blue light beams to the first coupling lens; the inclination angle of the bevel edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the first transmission optical fiber is provided with a second collimating lens, a third filtering system, a diffusion lens and a fluorescent cap, and blue light output by the ceramic ferrule PC passes through the second collimating lens and the third filtering system and is converted by the diffusion lens to irradiate the fluorescent cap and excite white light;
the infrared detection system comprises a first infrared LD, a third collimating lens, a second light filtering system, a third light filtering system and a first photoelectric element PD, and red light irradiated by the first infrared LD enters a first transmission optical fiber through the third collimating lens, the second light filtering system, the first light filtering system and the first coupling lens respectively and is transmitted to the output end of the first transmission optical fiber through the first transmission optical fiber; the second filter system reflects the red light of the first infrared LD to the first filter system and transmits the first filter system; red light output by the output end of the first transmission optical fiber passes through the second collimating lens and is reflected back by the third light filtering system, the reflected red light is transmitted to the first photoelectric element PD, and the first photoelectric element PD performs echo detection on the reflected red light;
the infrared detection system is used for transmitting a signal detected by the first photoelectric element PD to the control circuit; the control circuit outputs a control signal to control the power supply unit to power off and supply the blue LD after judging according to the red light echo detection of the infrared detection system; when the first photoelectric element PD cannot receive the red light reflected by the third light filtering system, the power supply is controlled to be switched off;
the first light filtering system can reflect blue light and can also transmit red light; the second light filtering system can reflect red light and can also transmit the red light; the third light filtering system can reflect red light and can also transmit blue light;
the switch system is a passive switch, an active switch or a time control switch; the power supply and the power off of the infrared detection multi-tube laser conduction illumination system are realized by controlling the on and off of the switch system.
2. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the passive switch is a first passive switch or a second passive switch.
3. An infrared detection multi-tube laser conduction illumination system according to claim 2, characterized in that: the first passive switch comprises a second infrared LD, a fourth collimating lens, a second coupling lens, a second transmission optical fiber, a first switch unit, a third coupling lens and a second photoelectric element PD; red light irradiated by the second infrared LD enters a second transmission optical fiber through a fourth collimating lens and a second coupling lens respectively and is transmitted to a first switch unit through the second transmission optical fiber, a first reflection lens is arranged in the first switch unit, and whether red light of the second infrared LD is reflected to a second photoelectric element PD is controlled by adjusting the angle of the first reflection lens; when the second photoelectric element PD receives the red light of the second infrared LD, the first passive switch is in an on state, and when the second photoelectric element PD does not receive the red light of the second infrared LD, the first passive switch is in an off state.
4. An infrared detection multi-tube laser conduction illumination system according to claim 2, characterized in that: the second passive switch comprises a third infrared LD, a fourth optical filtering system, a fourth coupling lens, a third transmission optical fiber, a second switch unit and a third photoelectric element PD; red light irradiated by the third infrared LD enters a third transmission optical fiber through a fourth optical filtering system and a fourth coupling lens respectively and is transmitted to a second switch unit through the third transmission optical fiber, a second reflector is arranged in the second switch unit, and whether red light of the third infrared LD is reflected to a third photoelectric element PD is controlled by adjusting the angle of the second reflector; when the third photoelectric element PD receives the red light of the third infrared LD, the second passive switch is in an on state, and when the third photoelectric element PD does not receive the red light of the third infrared LD, the second passive switch is in an off state;
the fourth filter system can transmit the red light irradiated by the third infrared LD, and can also reflect the red light reflected by the second switch unit to the third photoelectric element PD.
5. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the active switch is a manual power switch.
6. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the time control switch controls the power supply to be turned on or off by setting the illumination time.
7. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5 mm.
8. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the fluorescent cap is made of silica gel and yellow fluorescent powder, the length of the fluorescent cap is 15-30mm, and the diameter of the fluorescent cap is 10-20 mm.
9. An infrared detection multi-tube laser conduction illumination system according to claim 1, characterized in that: the blue light wavelength of the blue light LD is 450nm +/-50 nm.
CN202110786759.7A 2021-07-12 2021-07-12 Infrared detection multi-tube laser conduction lighting system Pending CN113339762A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748804A (en) * 2019-10-31 2020-02-04 南京邮电大学 Optical fiber energy transmission white light illumination device and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748804A (en) * 2019-10-31 2020-02-04 南京邮电大学 Optical fiber energy transmission white light illumination device and control method thereof

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