CN218721302U

CN218721302U - Single-tube laser conduction lighting system adopting echo infrared detection

Info

Publication number: CN218721302U
Application number: CN202121576973.1U
Authority: CN
Inventors: 刘浪; 侯杰
Original assignee: Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
Current assignee: Chongqing Yunchuang Jianglai Photoelectric Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2023-03-24
Anticipated expiration: 2031-07-12

Abstract

The utility model belongs to the technical field of illumination, in particular to a single-tube laser conduction illumination system adopting echo infrared detection, which comprises a single-tube laser conduction illumination system, an infrared detection system, a control circuit and a power supply unit; 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; the infrared detection system is adopted, the independent infrared optical fiber is adopted, the light emitting condition can be monitored in time, and if the transmission optical fiber is broken, the 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, and the safety is improved. The utility model relates to an adopt single tube laser conduction lighting system of infrared detection of echo has the light-emitting efficiency height, and security height advantage such as.

Description

Single-tube laser conduction lighting system adopting echo infrared detection

Technical Field

The utility model belongs to the technical field of the illumination, especially, relate to an adopt single tube laser conduction lighting system of infrared detection of echo.

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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt single tube laser conduction lighting system of infrared detection of echo to solve the technical problem who exists among the above-mentioned prior art.

In order to achieve the above purpose, the technical scheme of the utility model is that: a single-tube laser conduction lighting system adopting echo infrared detection comprises a single-tube laser conduction lighting system, an infrared detection system, a control circuit and a power supply unit;

the single-tube laser conduction lighting system comprises a blue light LD, a first collimating lens, a first filtering system, a coupling lens, a transmission optical fiber, a second collimating lens, a diffusion lens and a fluorescent cap; the 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; the blue light irradiated by the blue light LD enters the transmission optical fiber through the first collimating lens, the first filtering system and the coupling lens and is transmitted to the output end of the transmission optical fiber through the transmission optical fiber; the first filter system reflects blue light to a coupling lens; the inclined angle of the inclined edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the transmission optical fiber is provided with a second collimating lens, a third filtering system, a diffusion lens and a fluorescent cap, and the blue light output by the PC of the ceramic ferrule passes through the second collimating lens and the third filtering system, is converted by the diffusion lens, then irradiates the fluorescent cap and excites the fluorescent cap to emit white light;

the infrared detection system comprises an infrared LD, a third collimating lens, a second light filtering system, a third light filtering system and a photoelectric element PD, and red light irradiated by the infrared LD enters the transmission optical fiber through the third collimating lens, the second light filtering system, the first light filtering system and the coupling lens respectively and is transmitted to the output end of the transmission optical fiber through the transmission optical fiber; the second filter system reflects the red light of the infrared LD to the first filter system and transmits the first filter system; red light output by the output end of the 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 photoelectric element PD, and the photoelectric element PD performs echo detection on the reflected red light;

the infrared detection system is used for transmitting a signal detected by the 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 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 filter system can reflect red light and transmit blue light.

Further, the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5mm.

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 10-20mm.

Further, the blue light wavelength of the blue light LD is 450nm +/-50 nm.

The utility model discloses infrared detecting system adopts solitary infrared optic fibre, can in time monitor the light-emitting condition, if transmission optical fibre fracture, photoelectric element PD just can not receive the ruddiness that third light filtering system reflected back to can give the instruction of disconnected power supply.

The utility model relates to an adopt single tube laser conduction lighting system of infrared detection of echo's advantage as follows:

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 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 a 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, when laser is transmitted, the laser loss is small, the luminous efficiency is high, and when the inclined angle of the inclined edge of the blue light incidence end of the ceramic ferrule APC is 7-9 degrees, the luminous efficiency is highest.

5. When the thickness of the diffusion lens is 3-5mm, the laser excitation efficiency is highest.

6. And an infrared detection system is adopted, so that the light emitting condition can be monitored in time, and the safety is improved. Meanwhile, as the infrared wavelength energy is higher, and a system is formed independently, the monitoring is more accurate

Drawings

Fig. 1 is the utility model relates to an adopt single tube laser conduction lighting system's of infrared detection of echo structure sketch map.

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 first collimating lens; 3. a first filtering system; 4. a coupling lens; 5. a transmission optical fiber; 51. the ceramic ferrule APC; 52. a ceramic ferrule PC; 6. a second collimating lens; 7. a diffusion lens; 8. a fluorescent cap; 9. an infrared LD; 10. a third collimating lens; 11. a second filtering system; 12. a third filtering system; 13. a photoelectric element PD; 14. a control circuit; 15. a power supply unit.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment is basically as shown in the attached figure 1: a single-tube laser conduction lighting system adopting echo infrared detection comprises a single-tube laser conduction lighting system, an infrared detection system, a control circuit 14 and a power supply unit 15; the single-tube laser conduction lighting system comprises a blue light LD1, a first collimating lens 2, a first filtering system 3, a coupling lens 4, a transmission optical fiber 5, a second collimating lens 6, a diffusion lens 7 and a fluorescent cap 8; the transmission optical fiber 5 is a quartz optical fiber and comprises an incident end and an output end, wherein the incident end is provided with a ceramic ferrule APC51, and the output end is provided with a ceramic ferrule PC52; blue light irradiated by the blue light LD1 enters the transmission optical fiber 5 through the first collimating lens 2, the first filtering system 3 and the coupling lens 4 and is transmitted to the output end of the transmission optical fiber 5 through the transmission optical fiber 5, and the wavelength of the blue light is 450nm +/-50 nm; the first filter system 3 reflects the blue light to the coupling lens 4; the inclined angle of the inclined edge of the blue light incidence end of the ceramic ferrule APC51 is 7-9 degrees; the output end of the transmission optical fiber 5 is provided with a second collimating lens 6, a third filtering system 12, a diffusion lens 7 and a fluorescent cap 8, and blue light output by the ceramic ferrule PC52 passes through the second collimating lens 6 and the third filtering system 12, is converted by the diffusion lens 7, then irradiates on the fluorescent cap 8 and excites white light; the diffusion lens 7 is a plano-concave lens with the thickness of 3-5mm; the fluorescent cap 8 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, and the length of the fluorescent cap 8 is 15-30mm, and the diameter of the fluorescent cap 8 is 10-20mm.

The infrared detection system comprises an infrared LD9, a third collimating lens 10, a second light filtering system 11, a third light filtering system 12 and a photoelectric element PD13, wherein red light irradiated by the infrared LD9 enters the transmission optical fiber 5 through the third collimating lens 10, the second light filtering system 11, the first light filtering system 3 and the coupling lens 4 respectively, and is transmitted to the output end of the transmission optical fiber 5 through the transmission optical fiber 5; the second filter system 11 reflects the red light of the infrared LD9 to the first filter system 3 and transmits the first filter system 3; the red light output by the output end of the transmission optical fiber 5 passes through the second collimating lens 6 and then is reflected back by the third optical filtering system 12, the reflected red light is transmitted to the photoelectric element PD13, and the photoelectric element PD13 performs echo detection on the reflected red light;

the infrared detection system is used for transmitting a signal detected by the photoelectric element PD13 to the control circuit 14; after the control circuit 14 determines according to the red light echo detection of the infrared detection system, it outputs a control signal to control the power supply unit 15 to power off and supply power to the blue LD; when the photoelectric element PD13 does not receive the red light reflected by the third light filtering system 12, the power supply is controlled to be switched off;

the first light filtering system 3 can reflect blue light and can also transmit red light; the second light filtering system 11 can reflect red light and can also transmit red light; the third filter system 12 may reflect red light and may also transmit blue light.

Specifically, the blue LD1, the infrared LD9, the photoelectric element PD13, and the power supply unit 15 are each connected to the control circuit 14.

The utility model discloses the red light of 5 output outputs of transmission fiber is reflected by third optical filtering system 12, respectively through second collimating lens 6, transmission fiber 5, coupling lens 4, first optical filtering system 3, second optical filtering system 11 and transmit photoelectric element PD13 on.

It should be noted that, in this document, relational terms such as first and second, and the like are 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 above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements 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

1. The utility model provides an adopt single tube laser conduction lighting system that echo infrared detected which characterized in that: the system comprises a single-tube laser conduction lighting system, an infrared detection system, a control circuit and a power supply unit;

the single-tube laser conduction lighting system comprises a blue light LD, a first collimating lens, a first filtering system, a coupling lens, a transmission optical fiber, a second collimating lens, a diffusion lens and a fluorescent cap; the 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; the blue light irradiated by the blue light LD enters the transmission optical fiber through the first collimating lens, the first filtering system and the coupling lens and is transmitted to the output end of the transmission optical fiber through the transmission optical fiber; the first filter system reflects blue light to a coupling lens; the inclined angle of the inclined edge of the blue light incident end of the ceramic ferrule APC is 7-9 degrees; the output end of the transmission optical fiber is provided with a second collimating lens, a third filtering system, a diffusion lens and a fluorescent cap, and the blue light output by the PC is converted by the diffusion lens through the second collimating lens and the third filtering system, then irradiates the fluorescent cap and excites white light;

2. The single-tube laser conduction illumination system adopting echo infrared detection as claimed in claim 1, wherein: the diffusion lens is a plano-concave lens, and the thickness of the diffusion lens is 3-5mm.

3. The single-tube laser conduction illumination system adopting echo infrared detection as claimed in 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 10-20mm.

4. The single-tube laser conduction illumination system adopting echo infrared detection as claimed in claim 1, characterized in that: the blue light wavelength of the blue light LD is 450nm +/-50 nm.