A high efficiency fiber coupled laser with monitoring for illumination

Abstract

The application relates to a high-efficiency fiber-coupled laser with monitoring for illumination, which comprises a casing, the casing comprises a frame and a base arranged under the frame, an electrode one is arranged at the front end of the frame and extends out of the frame, a heat sink is arranged in the frame and on the base, a conductive wire one is arranged between the heat sink and the electrode one, a laser chip is arranged in the heat sink, a detector heat sink is arranged on the base and away from the side of the heat sink which is away from the electrode one, an electrode two is connected to the detector heat sink through a conductive wire two and extends out of the side of the frame, and a lens fiber is arranged on the side of the laser chip which is away from the conductive wire one. The application has the advantages that the blue light is transmitted to the illumination site by the fiber, the excited fluorescent light becomes various color light sources by the lamp at the fiber terminal, the safety is high, the alarm function is provided, and the high-voltage line can be kept away from the flammable and explosive site, so that the safety is ensured.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, specifically to a high-efficiency fiber-coupled laser for lighting with monitoring capabilities. Background Technology

[0002] Oil depots, chemical plants, gas stations, gas supply stations, gas storage stations, urban gas facilities, small-scale hazardous chemical sites, fireworks and firecracker warehouses and year-round retail outlets, and civilian explosive storage warehouses and usage sites are all flammable and explosive locations. The safety of lighting in flammable and explosive sites is paramount. Sparks from lighting power lines and switches are a major cause of safety hazards. Keeping the power supply and switches of light sources far away from the lighting location is the primary choice. General lighting fixtures and their power supplies and wiring being close to the fixtures is a major cause of accidents. Summary of the Invention

[0003] This invention provides a high-efficiency fiber-coupled laser for lighting with monitoring capabilities. It compresses the fast axis of the laser beam emitted by the laser diode through a lensed fiber and then couples it into the fiber with a Green lens, resulting in high propagation efficiency and small device size.

[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0005] A high-efficiency fiber-coupled laser for lighting with monitoring includes a housing. The housing includes a frame and a base disposed under the frame. An electrode is provided at the front end of the frame, extending out of the frame. A heat sink is provided inside the frame and on the base. A conductive wire connects the heat sink and the electrode. A laser chip is disposed inside the heat sink. A detector heat sink is provided on the base and on the side of the heat sink away from the electrode. An electrode is connected to the detector heat sink via a conductive wire, extending out of the side of the frame. A lens fiber is provided on the side of the laser chip away from the conductive wire. A tail sleeve is installed at the rear end of the frame. A protective sleeve is provided inside the tail sleeve, and a Green lens is provided inside the protective sleeve opposite the lens fiber. A beam splitter is provided between the lens fiber and the Green lens. A spacer is provided on the side of the Green lens away from the beam splitter. An optical fiber ferrule is provided on the side of the spacer away from the Green lens, and an optical fiber extends out of the tail sleeve and is connected to the optical fiber ferrule.

[0006] As an improvement, a detector chip is provided on the detector heat sink.

[0007] As an improvement, the laser chip is sintered on a heat sink.

[0008] As an improvement, the diameter of the lens fiber is 0.05-0.25 mm.

[0009] With the above structure, the present invention has the following advantages:

[0010] This invention first uses a lens-optical fiber to compress the fast axis of the laser beam emitted by the laser diode, and then uses a Green lens to couple it into the optical fiber, which has very good propagation efficiency and small size.

[0011] This device efficiently couples the light emitted by the laser diode into the optical fiber and monitors the return light function at the output end of the transmission optical fiber, and monitors the changes in return light when the optical fiber breaks or the output end ages.

[0012] The blue light is transmitted to the lighting area via optical fiber, and the luminaire at the fiber optic terminal excites the fluorescence to become various colored light sources. It has high safety and alarm functions, and can also prevent flammable and explosive environments from being exposed to the open, ensuring safe use. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the patent title of this invention.

[0014] Figure 2 This is a schematic diagram of the optical path propagation of the present invention.

[0015] Figure 3 This is an enlarged schematic diagram of structure A of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Combined with appendix Figure 1-3 A high-efficiency fiber-coupled laser for lighting with monitoring includes a housing 1. The housing 1 includes a frame 14 and a base 15 disposed below the frame 14. An electrode 16 is provided at the front end of the frame 14, extending out of the frame 14. A heat sink 3 is provided inside the frame 14 and on the base 15. A conductive wire 2 connects the heat sink 3 and the electrode 17. A laser chip 9 is disposed inside the heat sink 3. A detector heat sink 4 is provided on the base 15 and on the side of the heat sink 3 away from the electrode 16. An electrode 17 is connected to the detector heat sink 4 via a conductive wire 25. Electrode 2 18 is positioned extending from the side of frame 14. A lens fiber 10 is provided on the side of laser chip 9 away from conductive wire 2. A tail sleeve 18 is installed on the rear end of frame 14. A protective sleeve 6 is provided inside the tail sleeve 18, and a Green lens 13 is provided inside the protective sleeve 6 opposite to the lens fiber 10. A beam splitter 11 is provided between the lens fiber 10 and the Green lens 13. A spacer 7 is provided on the side of the Green lens 13 away from the beam splitter 11. An optical fiber ferrule 8 is provided on the side of the spacer 7 away from the Green lens 13, and an optical fiber 19 is connected to the optical fiber ferrule 8 and extends out of the tail sleeve 18.

[0018] The light emitted from laser chip 9 is compressed along the fast axis of the chip by lens fiber 10, then directed at 45 degrees to beam splitter 11, and then enters Green lens 13. After being focused by Green lens 13, it enters fiber 19 and is transmitted to the far-end fiber 19, where it is excited by a fluorescent excitation cap to illuminate the site with white light or other colored lights. The light returning from the far-end fiber end face is reflected and deflected 90 degrees by beam splitter 11 to the monitoring detector chip 12.

[0019] Laser chip 9 is sintered onto heat sink 3, which is sintered onto intermediate shell 14. Heat sink 3 is connected to electrode 16 of shell 1 via conductive wire 2. Detector chip 12 is bonded to detector heat sink 4, which is bonded to the bottom surface of shell 1. Detector heat sink 4 is connected to electrode 18 of shell 1 via conductive wire 5. Figure 3 The lens fiber 10 is bonded to the heat sink 3 and the laser chip 9 with adhesive, which has good processability.

[0020] The laser chip 9 has a wavelength of 450±20nm and an output power of 1-5W. The laser chip 9 is followed by a lens fiber 10 and a lens fiber 11 with a diameter of 0.05-0.25mm. The lens fiber 11 is fixed to the heat sink 3 with UV adhesive.

[0021] Alternative solutions

[0022] Without changing the other options mentioned above, the beam splitter 11 is replaced with a polarizer, whose polarization direction is the same as that of the laser diode 7.

[0023] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-efficiency fiber-coupled laser for lighting with monitoring, characterized in that: The device includes a housing (1), which includes a frame (14) and a base (15) disposed under the frame (14). An electrode (16) is provided at the front end of the frame (14), and the electrode (16) extends out of the frame (14). A heat sink (3) is provided inside the frame (14) and on the base (15). A conductive wire (2) connects the heat sink (3) and the electrode (16). A laser chip (9) is provided inside the heat sink (3). A detector heat sink (4) is provided on the base (15) and on the side of the heat sink (3) away from the electrode (16). An electrode (17) is connected to the detector heat sink (4) through a conductive wire (5). The electrode (17) extends out of the frame (14). The side of the frame (14) is provided with a lens fiber (10) on the side of the laser chip (9) away from the conductive wire (2). A tail sleeve (18) is installed on the rear end of the frame (14). A protective sleeve (6) is provided inside the tail sleeve (18), and a Green lens (13) is provided inside the protective sleeve (6) opposite to the lens fiber (10). A beam splitter (11) is provided between the lens fiber (10) and the Green lens (13). A spacer (7) is provided on the side of the Green lens (13) away from the beam splitter (11). An optical fiber ferrule (8) is provided on the side of the spacer (7) away from the Green lens (13), and an optical fiber (19) is connected to the optical fiber ferrule (8) and extends out of the tail sleeve (18). The detector heat sink (4) is provided with a detector chip (12); The laser chip (9) is sintered on the heat sink (3); The heat sink (3) is sintered on the intermediate shell (1), and the detector heat sink (4) is attached to the bottom surface of the shell (1); The diameter of the lens fiber (10) is 0.05-0.25 mm; The laser chip (9) has a wavelength of 450±20nm and an output power of 1-5W.

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