Optical fiber conduction lighting device and lighting method

Abstract

The invention provides an optical fiber conduction lighting device and a lighting method. The lighting device comprises a light source module, an optical coupling module, a light transmission module and a light diffusion output module. The optical coupling module is arranged at the input end of the optical transmission module; the optical coupling module is used for focusing light rays emitted by the light source module to the light transmission module; the optical transmission module is used for transmitting the light focused by the optical coupling module; and the light diffusion output module is arranged at the output end of the light transmission module and is used for diffusing the light rays output by the optical fiber output end into illumination light spots in a preset range. Light is transmitted through the optical fiber, no current passes through a transmission path, potential safety hazards such as electric leakage and electric sparks are completely eradicated, the device is safely applied to flammable and explosive high-risk places such as mines and petrochemical engineering, efficient focusing and coupling of visible light are achieved through the optical coupling module, loss of the light in the initial transmission stage is greatly reduced, and the service life of the device is prolonged. And the overall energy efficiency of the lighting system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber transmission lighting, and in particular to an optical fiber transmission lighting device and a lighting method. BACKGROUND

[0002] The development of lighting technology has always been around high efficiency, safety, and adaptation to special scene needs. The widely used incandescent lamps, LED lamps and other photoelectric conversion lamps will emit a large amount of infrared light during the light emitting process. This part of infrared light not only cannot be used for lighting, but also will be converted into heat, causing the illuminated objects to fade, age, deform and other problems, especially not suitable for the lighting scene of precious cultural relics such as calligraphy and painting, textiles, lacquerware, etc. At the same time, in flammable and explosive high-risk places such as mine, oil and chemical storage tank area, natural gas transportation station, the traditional electrical lighting device has the risk of electric leakage and electric spark, which is easy to cause explosion accident and has prominent safety hidden danger.

[0003] In order to solve the lighting needs of special scenes, optical fiber transmission lighting technology is gradually applied. It transmits light to the target lighting area through optical fiber, realizing the physical isolation of light source and lighting area. However, the existing optical fiber lighting device has the following defects: first, the infrared light of the light source is not effectively filtered out, and heat radiation will still be conducted during the transmission process of the optical fiber, which cannot eliminate the hidden danger of heat damage from the root; second, the coupling design of the light focusing assembly and the input end of the optical fiber is unreasonable, the light focusing precision is insufficient, resulting in a large amount of visible light loss and low transmission efficiency; third, the light diffusion structure of the output end of the optical fiber is simple, and it cannot restore the focused light spot to uniform scattered light, so the lighting effect is poor.

[0004] Therefore, it is the key to solve the lighting pain points of special scenes to develop an optical fiber transmission lighting device that can filter out infrared heat radiation, has high coupling efficiency and stable lighting effect. SUMMARY

[0005] The embodiments of the present application provide an optical fiber transmission lighting device and a lighting method to solve one or more technical problems encountered in the prior art.

[0006] In a first aspect, the embodiments of the present application provide an optical fiber transmission lighting device, which comprises a light source module, an optical coupling module, an optical transmission module and an optical diffusion output module.

[0007] The light source module comprises a photoelectric conversion lamp;

[0008] The optical coupling module is arranged at the input end of the optical transmission module. The optical coupling module comprises an optical focusing element, and is used for focusing the light emitted by the light source module to the optical transmission module.

[0009] The light transmission module comprises at least one optical fiber, and is configured to transmit the light focused by the optical coupling module from an input end of the optical fiber to an output end of the optical fiber.

[0010] The light diffusion output module is arranged at the output end of the light transmission module, and comprises an optical diffusion element, and is configured to diffuse the light output by the output end of the optical fiber into a preset range of illumination spots.

[0011] In a preferred embodiment, an infrared filter module is further arranged between the light source module and the optical coupling module, and is configured to filter infrared light with a wavelength greater than 780 nm in the light.

[0012] In a preferred embodiment, the infrared filter module is a band-pass filter or a cold mirror, the average transmittance of the infrared filter module in a visible light wavelength range of 380-780 nm is greater than 85%, and the average transmittance of the infrared filter module in an infrared wavelength range greater than 780 nm is less than 10%.

[0013] In a preferred embodiment, the optical fiber in the light transmission module is a single-core optical fiber or a multi-core bundle optical fiber, and the total cross-sectional area of the fiber core of the light transmission module is determined according to the required light flux.

[0014] In a preferred embodiment, the optical diffusion element and the focusing element comprise one or more of an optical lens, a grating, a mirror, a prism, an optical fiber, and a Fresnel lens.

[0015] The optoelectronic conversion lamp is selected from any one or more of a gas discharge lamp, a semiconductor light emitting lamp, and a solid state lighting lamp.

[0016] In a preferred embodiment, an intelligent control module is further included, which is connected to the light source module and comprises:

[0017] A light flux detection unit configured to detect the exit light flux of the light diffusion output module.

[0018] A control unit configured to adjust the power and / or spectral output of the light source module according to a preset illumination requirement or a feedback signal of the light flux detection unit.

[0019] In a preferred embodiment, the intelligent control module further comprises an ambient temperature detection unit and a light source temperature detection unit.

[0020] The control unit is configured to:

[0021] When the light source temperature detection unit detects that the temperature exceeds a first threshold value, the power of the light source module is reduced.

[0022] When the ambient temperature detecting unit detects that the temperature exceeds the second threshold value and the light flux detecting unit detects that the light flux is lower than the required value, the cooling function of the infrared filtering module is started or enhanced.

[0023] In a preferred embodiment, the optical focusing element of the optical coupling module comprises at least one aspheric lens, and the distance between the optical focusing element and the input end face of the optical fiber is adjustable to adapt to different light sources and optical fiber parameters.

[0024] In a second aspect, an embodiment of the present application provides a fiber-optic transmission type lighting method, comprising the steps of:

[0025] generating light through the photoelectric conversion lamp;

[0026] focusing and coupling the light into the input end of at least one optical fiber through an optical focusing element;

[0027] transmitting the light to a target lighting area away from the light source through the optical fiber;

[0028] diffusing the outgoing light into a required range of illumination light through an optical diffusion element at the output end of the optical fiber.

[0029] In a preferred embodiment, before the focusing and coupling step, the method further comprises: filtering the light to selectively filter out the infrared light component; and / or

[0030] During the transmission or output process, the method further comprises an intelligent control step of detecting the output light flux or the ambient parameters and feeding back to adjust the power of the photoelectric conversion lamp based on the detection results.

[0031] One of the above technical solutions has the following advantages or beneficial effects: the light is transmitted through the optical fiber, no current passes through the transmission path, completely eliminating the safety hazards such as electric leakage and electric spark, and the optical coupling module realizes efficient focusing and coupling of visible light, greatly reducing the loss of light in the initial stage of transmission and improving the overall energy efficiency of the lighting system.

[0032] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present application will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0033] In the drawings, like reference numerals refer to like elements throughout the various drawings. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and that they should not be construed as limiting the scope of the application.

[0034] Figure 1 The overall structure connection diagram of the optical fiber transmission lighting device of the embodiment. DETAILED DESCRIPTION

[0035] In the following, only some exemplary embodiments are described briefly. As the person skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the application. Therefore, the drawings and the description are considered to be exemplary in nature and not limiting.

[0036] The embodiment of the application provides an optical fiber transmission lighting device, referring to Figure 1 As shown, the optical fiber transmission lighting device comprises a light source module 100, an optical coupling module 200, a light transmission module 300 and a light diffusion output module 400.

[0037] The light source module 100 comprises a photoelectric conversion lamp.

[0038] The optical coupling module 200 is arranged at the input end of the light transmission module 100; the optical coupling module 200 comprises an optical focusing element, and the optical coupling module 200 is used for focusing the light emitted by the light source module 100 to the light transmission module 300.

[0039] The light transmission module 300 comprises at least one optical fiber, and the light transmission module 300 is used for conducting the light focused by the optical coupling module 200 from the input end of the optical fiber to the output end of the optical fiber.

[0040] The light diffusion output module 400 is arranged at the output end of the light transmission module 300, and the light diffusion output module 400 comprises an optical diffusion element, and the light diffusion output module 400 is used for diffusing the light output by the output end of the optical fiber into a preset range of illumination spots.

[0041] In the embodiment, the light is transmitted through the optical fiber, no current passes in the transmission path, and the safety hazards such as electric leakage and electric spark are completely eliminated, and the optical fiber transmission lighting device is safely applied to high-risk places such as mines, petroleum and chemical industries, and the like. Moreover, the optical coupling module realizes efficient focusing and coupling of visible light, greatly reduces the loss of light in the initial stage of transmission, and improves the overall energy efficiency of the lighting system.

[0042] In an embodiment, the fiber-optic light conducting device further comprises an infrared filter module between the light source module 100 and the optical coupling module 200, the infrared filter module is configured to filter out infrared light with wavelength longer than 780 nm.

[0043] Further, the infrared filter module is a band-pass filter or a cold mirror, the average transmittance of the infrared filter module in the visible light band of 380-780 nm is greater than 85%, and the average transmittance of the infrared filter module in the infrared band longer than 780 nm is less than 10%.

[0044] In an embodiment, the optical fiber in the light transmission module is a single-core optical fiber or a multi-core bundle optical fiber, and the total core cross-sectional area of the light transmission module is determined according to the required light flux.

[0045] In an embodiment, the optical diffusion element and the focusing element comprise one or more of optical lenses, gratings, mirrors, prisms, optical fibers, and Fresnel lenses.

[0046] The photoelectric conversion lamp is selected from any one or more of a gas discharge lamp, a semiconductor light emitting lamp, and a solid-state lighting lamp.

[0047] In an embodiment, the fiber-optic light conducting device further comprises an intelligent control module connected to the light source module 100, the intelligent control module comprises:

[0048] a light flux detection unit configured to detect the light flux of the light diffusion output module;

[0049] a control unit configured to adjust the power and / or spectral output of the light source module according to a preset lighting requirement or a feedback signal of the light flux detection unit.

[0050] In an embodiment, the intelligent control module further comprises an ambient temperature detection unit and a light source temperature detection unit.

[0051] The control unit is configured to:

[0052] when the light source temperature detection unit detects that the temperature exceeds a first threshold value, reduce the power of the light source module;

[0053] when the ambient temperature detection unit detects that the temperature exceeds a second threshold value and the light flux detection unit detects that the light flux is lower than a required value, start or enhance the cooling function of the infrared filter module.

[0054] In one embodiment, the optical focusing element of the optical coupling module 200 comprises at least one aspheric lens, and the distance between the optical focusing element and the input end of the optical fiber is adjustable to adapt to different light sources and optical fiber parameters.

[0055] In a second aspect, the embodiments of the present application provide a method for optical fiber transmission lighting, comprising the steps of:

[0056] generating light by photoelectric conversion lamps;

[0057] focusing and coupling the light into the input end of at least one optical fiber by an optical focusing element;

[0058] transmitting the light to a target lighting area away from the light source by the optical fiber;

[0059] diffusing the outgoing light into a required range of lighting by an optical diffusion element at the output end of the optical fiber.

[0060] In a preferred embodiment, before the focusing and coupling step, the method further comprises: filtering the light to selectively filter out the infrared light component; and / or

[0061] In the transmission or output process, the method further comprises a smart control step: detecting the output light flux or environmental parameters, and feeding back to adjust the power of the photoelectric conversion lamps based on the detection results.

[0062] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0063] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0064] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fiber optic lighting device, characterized in that, It includes a light source module, an optical coupling module, an optical transmission module, and an optical diffusion output module; The light source module includes a photoelectric conversion lamp; An optical coupling module is disposed at the input end of the optical transmission module; the optical coupling module includes an optical focusing element and is used to focus the light emitted by the light source module onto the optical transmission module; The optical transmission module contains at least one optical fiber and is used to transmit the light focused by the optical coupling module from the input end of the optical fiber to the output end of the optical fiber. The light diffusion output module is located at the output end of the light transmission module. The light diffusion output module includes an optical diffusion element and is used to diffuse the light output from the optical fiber output end into an illumination spot of a preset range.

2. The fiber optic lighting device according to claim 1, characterized in that: It also includes an infrared filtering module disposed between the light source module and the optical coupling module, the infrared filtering module being used to filter out infrared light with wavelengths greater than 780nm from the light source module.

3. The fiber optic lighting device according to claim 2, characterized in that: The infrared filtering module is a bandpass filter or a cold reflector; the average transmittance of the infrared filtering module in the visible light band 380-780nm is greater than 85%; the average transmittance of the infrared filtering module in the infrared band greater than 780nm is less than 10%.

4. The fiber optic lighting device according to claim 1, characterized in that: The optical fiber in the optical transmission module is a single-core optical fiber or a multi-core bundled optical fiber, and the total cross-sectional area of ​​the fiber core of the optical transmission module is determined according to the required optical flux.

5. The fiber optic lighting device according to claim 1, characterized in that: The optical diffusion element and the focusing element include one or more of the following: optical lens, grating, mirror, prism, optical fiber, and Fresnel lens; The photoelectric conversion lamp is selected from one or more of gas discharge lamps, semiconductor light-emitting lamps, and solid-state lighting lamps.

6. The fiber optic lighting device according to claim 1, characterized in that: It also includes an intelligent control module, which is connected to the light source module and includes: A light flux detection unit is used to detect the emitted light flux of the light diffusion output module; The control unit is used to adjust the power and / or spectral output of the light source module according to preset lighting requirements or feedback signals from the luminous flux detection unit.

7. The fiber optic lighting device according to claim 6, characterized in that, The intelligent control module also includes an ambient temperature detection unit and a light source temperature detection unit; The control unit is configured to: When the light source temperature detection unit detects that the temperature exceeds the first threshold, it reduces the power of the light source module; When the ambient temperature detection unit detects that the temperature exceeds the second threshold and the luminous flux detection unit detects that the luminous flux is lower than the required value, the cooling function of the infrared filtering module is activated or enhanced.

8. The fiber optic lighting device according to claim 1, characterized in that: The optical focusing element of the optical coupling module includes at least one aspherical lens, and the distance between the optical focusing element and the optical fiber input end face is adjustable to adapt to different light sources and optical fiber parameters.

9. A fiber optic conductive lighting method, characterized in that, Including the following steps: Light is generated by photoelectric conversion lamps; The light rays are focused and coupled into the input end of at least one optical fiber through an optical focusing element; The optical fiber transmits light to the target illumination area far from the light source. At the output end of the optical fiber, the emitted light is diffused into illumination light of the desired range by an optical diffusion element.

10. The fiber-optic conductive lighting method according to claim 9, characterized in that, Prior to the focusing coupling step, the method further includes: filtering the light beam to selectively remove the infrared component; and / or The transmission or output process also includes an intelligent control step: detecting the output luminous flux or environmental parameters, and adjusting the power of the photoelectric conversion lamp based on the detection results.

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