Optical fiber conduction laser system for indoor illumination

Abstract

The invention discloses an optical fiber conduction laser system for indoor illumination, and relates to the technical field of laser illumination. The system comprises a blue laser module, a first optical fiber group, a second optical fiber group, a red laser module, a fluorescence conversion element group, an optical shaping element group and an illumination terminal group, the blue laser module serves as an outdoor emission source to be connected with the first optical fiber set. The first optical fiber set serves as a light transmission medium to be connected to the fluorescence conversion element set. The red laser module as an outdoor supplementary emission source is connected with the second optical fiber group; the second optical fiber group as an optical transmission medium is connected to the fluorescence conversion element group; the fluorescence conversion element group is connected to the optical shaping element group, and both are connected to the lighting terminal group as fluorescence conversion devices. The laser light source and the fluorescence conversion material are separated, the size is smaller, and the heat management difficulty is lower; the blue laser module and the red laser module are introduced, so that the integration level is higher, and the color rendering index is better; the optical fiber conduction wiring cost is lower, and the method is suitable for industrial application.

Description

Technical Field

[0001] The invention relates to the technical field of laser lighting, and in particular to an optical fiber-conducting laser system for indoor lighting. Background Art

[0002] Optical fiber-transmitted lighting sources can transmit light to any area, and have outstanding advantages such as miniaturization, light weight, and easy replacement and installation. They are widely used in optical communications, indoor lighting, architectural lighting, museums, etc. According to the light source, they can be divided into LED light sources and laser light sources.

[0003] In the field of laser lighting, the technical solution for fiber-optic transmission of lighting sources is that blue lasers are output through optical fibers and then excite fluorescent materials. For example, a fiber-optic transmission laser headlight disclosed in the Chinese invention patent with publication number CN105546453A is suitable for a single lighting scene. For multi-scene lighting needs, all light sources need to be integrated and designed; in addition, in some high-color rendering index application fields, such as indoor lighting in buildings, schools, hospitals, museums, and homes, there is an extremely high pursuit of color rendering index, and it is necessary to further integrate red light-emitting modules (outdoor lighting, such as street lamps, does not require high color rendering index). Another technical solution for fiber-optic transmission of lighting sources is a fiber-optic transmission of white light sources, such as a laser headlight system based on fiber-optic transmission disclosed in the Chinese invention patent with publication number CN112594591A. In this patent, the white light generated by laser excitation of fluorescent materials is transmitted through optical fibers, but its coupling is difficult, and light shaping elements are still required at the end of the optical fiber to adapt to different terminal requirements.

[0004] Therefore, based on the research progress at home and abroad, it is necessary to propose a laser lighting system to achieve the synergy of light quality and integration. Summary of the invention

[0005] The purpose of the present invention is to provide a fiber-optic laser transmission system for the field of laser lighting, especially the field of indoor lighting, so as to achieve coordination of light quality and integration.

[0006] According to the purpose of the present invention, a fiber-optic transmission laser system for indoor lighting is proposed, comprising a blue laser module, a first fiber group, a second fiber group, a red laser module, a fluorescence conversion element group, an optical shaping element group, and a lighting terminal group; wherein the blue laser module is connected to the first fiber group as an outdoor emission source, and the first fiber group is connected to the fluorescence conversion element group as an optical transmission medium; the red laser module is connected to the second fiber group as an outdoor supplementary emission source, and the second fiber group is connected to the fluorescence conversion element group as an optical transmission medium; the fluorescence conversion element group is connected to the optical shaping element group, and both are connected to the lighting terminal group as fluorescence conversion devices;

[0007] The blue laser module emits blue light, which is transmitted to different fluorescence conversion elements in the fluorescence conversion element group through multiple optical fibers in the first optical fiber group. The red laser module emits red light, which is transmitted to different fluorescence conversion elements in the fluorescence conversion element group through multiple optical fibers in the second optical fiber group. The fluorescence conversion element undergoes fluorescence conversion to generate white light, which is formed into lighting light sources of different angles through different optical shaping elements in the subsequent optical shaping element group, and is finally used in different lighting terminals in the lighting terminal group.

[0008] Preferably, the emission wavelength of the blue laser module is 445-465 nm.

[0009] Preferably, the multiple optical fibers inside the first optical fiber group and the second optical fiber group are made of quartz, and have a core diameter of 125-400 μm.

[0010] Preferably, the emission wavelength of the red laser module is 625-665 nm.

[0011] Preferably, the multiple fluorescence conversion elements in the fluorescence conversion element group are one or more of fluorescent powder, fluorescent glass, and fluorescent ceramic.

[0012] Preferably, the multiple optical shaping elements in the optical shaping element group are one or more of an optical lens, a reflective cup, and a light homogenizing plate.

[0013] Preferably, the multiple lighting terminals in the lighting terminal group are one or more of a living room, a study, a bedroom, and a dining room.

[0014] Preferably, after passing through the optical shaping element, the divergence angle of the fluorescence conversion element is 15 to 120°.

[0015] Compared with the prior art, the advantages of the optical fiber-conducted laser system for indoor lighting disclosed in the present invention are:

[0016] 1. Compared with the existing white light source transmitted by optical fiber, the present invention transmits blue light and red light through optical fiber to excite the fluorescence conversion element. There is no light coupling loss and the efficiency is higher. The laser light source and the fluorescence conversion material are separated, the volume is smaller, and the thermal management difficulty is lower.

[0017] 2. Compared with the existing blue excitation light source conducted by optical fiber, the present invention introduces a blue laser module and a red laser module, which has a higher integration and a better color rendering index.

[0018] 3. Compared with the current laser lighting solutions, fluorescent conversion materials and optical shaping elements are installed at the application terminals, which eliminates any electrical safety hazards and has a higher safety factor.

[0019] 4. The centralized laser lighting system proposed in the present invention uses optical fiber transmission and wiring, which is lower in cost than a distributed single light source and is suitable for industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a system schematic diagram of the present invention.

[0022] In the figure: 1-blue laser module; 2-first optical fiber group; 21-first optical fiber; 22-second optical fiber; 23-third optical fiber; 3-second optical fiber group; 31-fourth optical fiber; 32-fifth optical fiber; 33-sixth optical fiber; 4-red laser module; 5-fluorescence conversion element group; 51-first fluorescence conversion element; 52-second fluorescence conversion element; 53-third fluorescence conversion element; 6-optical shaping element group; 61-first optical shaping element; 62-second optical shaping element; 63-third optical shaping element; 7-illumination terminal group; 71-first illumination terminal; 72-second illumination terminal; 73-third illumination terminal. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is briefly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Figure 1 The preferred embodiments of the present invention are shown and analyzed in detail.

[0025] Example 1

[0026] like Figure 1 The fiber-optic laser transmission system for indoor lighting shown in the figure includes a blue laser module 1, a first optical fiber group 2, a second optical fiber group 3, a red laser module 4, a fluorescence conversion element group 5, an optical shaping element group 6, and a lighting terminal group 7.

[0027] The emission wavelength of the blue laser module 1 is 445nm. The first optical fiber group 2 and the second optical fiber group 3 each have three optical fibers, namely the first optical fiber 21, the second optical fiber 22, the third optical fiber 23, the fourth optical fiber 31, the fifth optical fiber 32, and the sixth optical fiber 33, all of which are made of quartz and have a core diameter of 125μm. The emission wavelength of the red laser module 4 is 625nm. The fluorescence conversion element group 5 has three fluorescence conversion elements, namely the first fluorescence conversion element 51, the second fluorescence conversion element 52, and the third fluorescence conversion element 53. The first fluorescence conversion element 51 is a fluorescent powder, the second fluorescence conversion element 52 is a fluorescent powder, and the third fluorescence conversion element 53 is a fluorescent glass. The optical shaping element group 6 has three optical shaping elements, namely the first optical shaping element 61, the second optical shaping element 62, and the third optical shaping element 63. The first optical shaping element 61 is an optical lens, the second optical shaping element 62 is a reflective cup, and the third optical shaping element 63 is a reflective cup. There are three lighting terminals in the lighting terminal group 7, namely the first lighting terminal 71, the second lighting terminal 72, and the third lighting terminal 73. The first lighting terminal 71 is a study, the second lighting terminal 72 is a bedroom, and the third lighting terminal 73 is a dining room.

[0028] The blue laser module 1 is connected to the first optical fiber group 2 as an outdoor emission source, and the first optical fiber group 2 is connected to the fluorescence conversion element group 5 as an optical transmission medium; the red laser module 4 is connected to the second optical fiber group 3 as an outdoor supplementary emission source, and the second optical fiber group 3 is connected to the fluorescence conversion element group 5 as an optical transmission medium; the fluorescence conversion element group 5 is connected to the optical shaping element group 6, and both are connected to the lighting terminal group 7 as fluorescence conversion devices.

[0029] The blue laser module 1 emits blue light, which is transmitted to the first fluorescence conversion element 51 through the first optical fiber 21. The first fluorescence conversion element 51 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the first fluorescence conversion element 51 through the fourth optical fiber 31, which can improve the color rendering index of the light source. The white light is formed into a 15° lighting source through the subsequent first optical shaping element 61, and is finally used in the study lighting scene.

[0030] The blue laser module 1 emits blue light, which is transmitted to the second fluorescence conversion element 52 via the second optical fiber 22. The second fluorescence conversion element 52 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the second fluorescence conversion element 52 via the fifth optical fiber 32, which can improve the color rendering index of the light source. The white light is formed into a 90° lighting source through the subsequent second optical shaping element 62, and is finally used in bedroom lighting scenes.

[0031] The blue laser module 1 emits blue light, which is transmitted to the third fluorescence conversion element 53 via the third optical fiber 23. The third fluorescence conversion element 53 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the third fluorescence conversion element 53 via the sixth optical fiber 33, which can improve the color rendering index of the light source. The white light is formed into a 60° lighting source through the subsequent third optical shaping element 63, and is finally used in the restaurant lighting scene.

[0032] Example 2

[0033] like Figure 1 The fiber-optic laser transmission system for indoor lighting shown in the figure includes a blue laser module 1, a first optical fiber group 2, a second optical fiber group 3, a red laser module 4, a fluorescence conversion element group 5, an optical shaping element group 6, and a lighting terminal group 7.

[0034] The emission wavelength of the blue laser module 1 is 465nm. The first optical fiber group 2 and the second optical fiber group 3 each contain three optical fibers, namely the first optical fiber 21, the second optical fiber 22, the third optical fiber 23, the fourth optical fiber 31, the fifth optical fiber 32, and the sixth optical fiber 33, all of which are made of quartz with a core diameter of 400μm. The emission wavelength of the red laser module 4 is 665nm. The fluorescence conversion element group 5 contains three fluorescence conversion elements, namely the first fluorescence conversion element 51, the second fluorescence conversion element 52, and the third fluorescence conversion element 53. The first fluorescence conversion element 51 is a fluorescent ceramic, the second fluorescence conversion element 52 is a fluorescent powder, and the third fluorescence conversion element 53 is a fluorescent glass. The optical shaping element group 6 contains three optical shaping elements, namely the first optical shaping element 61, the second optical shaping element 62, and the third optical shaping element 63. The first optical shaping element 61 is a homogenizing plate, the second optical shaping element 62 is a reflective cup, and the third optical shaping element 63 is an optical lens. There are three lighting terminals in the lighting terminal group 7, namely the first lighting terminal 71, the second lighting terminal 72, and the third lighting terminal 73. The first lighting terminal 71 is the living room, the second lighting terminal 72 is the bedroom, and the third lighting terminal 73 is the dining room.

[0035] The blue laser module 1 is connected to the first optical fiber group 2 as an outdoor emission source, and the first optical fiber group 2 is connected to the fluorescence conversion element group 5 as an optical transmission medium; the red laser module 4 is connected to the second optical fiber group 3 as an outdoor supplementary emission source, and the second optical fiber group 3 is connected to the fluorescence conversion element group 5 as an optical transmission medium; the fluorescence conversion element group 5 is connected to the optical shaping element group 6, and both are connected to the lighting terminal group 7 as fluorescence conversion devices.

[0036] The blue laser module 1 emits blue light, which is transmitted to the first fluorescence conversion element 51 through the first optical fiber 21. The first fluorescence conversion element 51 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the first fluorescence conversion element 51 through the fourth optical fiber 31, which can improve the color rendering index of the light source. The white light is formed into a 120° lighting source through the subsequent first optical shaping element 61, and is finally used in the living room lighting scene.

[0037] The blue laser module 1 emits blue light, which is transmitted to the second fluorescence conversion element 52 via the second optical fiber 22. The second fluorescence conversion element 52 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the second fluorescence conversion element 52 via the fifth optical fiber 32, which can improve the color rendering index of the light source. The white light is formed into a 90° lighting source through the subsequent second optical shaping element 62, and is finally used in bedroom lighting scenes.

[0038] The blue laser module 1 emits blue light, which is transmitted to the third fluorescence conversion element 53 via the third optical fiber 23. The third fluorescence conversion element 53 undergoes fluorescence conversion to generate white light. The red laser module 4 emits red light, which is transmitted to the third fluorescence conversion element 53 via the sixth optical fiber 33, which can improve the color rendering index of the light source. The white light is formed into a 90° lighting source through the subsequent third optical shaping element 63, and is finally used in the restaurant lighting scene.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement and use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit and scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A fiber-optic laser system for indoor lighting, It is characterized in that The invention comprises a blue laser module (1), a first optical fiber group (2), a second optical fiber group (3), a red laser module (4), a fluorescence conversion element group (5), an optical shaping element group (6), and an illumination terminal group (7); wherein the blue laser module (1) is connected to the first optical fiber group (2) as an outdoor emission source, and the first optical fiber group (2) is connected to the fluorescence conversion element group (5) as an optical transmission medium; the red laser module (4) is connected to the second optical fiber group (3) as an outdoor supplementary emission source, and the second optical fiber group (3) is connected to the fluorescence conversion element group (5) as an optical transmission medium; the fluorescence conversion element group (5) is connected to the optical shaping element group (6), and both are connected to the illumination terminal group (7) as fluorescence conversion devices; The blue laser module (1) emits blue light, which is transmitted to different fluorescence conversion elements in the fluorescence conversion element group (5) via multiple optical fibers in the first optical fiber group (2); the red laser module (4) emits red light, which is transmitted to different fluorescence conversion elements in the fluorescence conversion element group (5) via multiple optical fibers in the second optical fiber group (3); the fluorescence conversion elements undergo fluorescence conversion to generate white light, which is then transformed into illumination light sources of different angles via different optical shaping elements in the subsequent optical shaping element group (6), and finally applied to different illumination terminals in the illumination terminal group (7).

2. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The emission wavelength of the blue laser module (1) is 445-465 nm.

3. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The multiple optical fibers inside the first optical fiber group (2) and the second optical fiber group (3) are all made of quartz, and have a core diameter of 125 to 400 μm.

4. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The emission wavelength of the red laser module (4) is 625-665 nm.

5. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The multiple fluorescence conversion elements in the fluorescence conversion element group (5) are one or more of fluorescent powder, fluorescent glass, and fluorescent ceramic.

6. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The multiple optical shaping elements in the optical shaping element group (6) are one or more of an optical lens, a reflective cup, and a light homogenizing plate.

7. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that The multiple lighting terminals in the lighting terminal group (7) are one or more of the living room, study, bedroom, and dining room.

8. The optical fiber-guided laser system for indoor lighting according to claim 1, It is characterized in that After passing through the optical shaping element, the divergence angle of the fluorescence conversion element is 15 to 120°.

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