CN213184966U

CN213184966U - High-power laser lighting equipment

Info

Publication number: CN213184966U
Application number: CN202022666300.7U
Authority: CN
Inventors: 冯丽军
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-05-11
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a laser lighting apparatus of high power, including power, switch and light source, still include heat abstractor, close beam device, focusing lens, fluorescence piece and collimating lens group, the light source is the laser diode array, close beam device with the optical coupling of three routes laser diode array on the fluorescence piece, collimating lens group includes first collimating lens and second collimating lens, heat abstractor includes first heat abstractor and second heat abstractor, focusing lens, fluorescence piece, first collimating lens and second collimating lens set gradually along the laser light path direction that closes beam device coupling. The utility model discloses a three routes integrated laser diode array and fluorescence piece's combination provides the white light illumination, but wide application in various occasions that need high power white light illumination.

Description

High-power laser lighting equipment

Technical Field

The utility model belongs to the technical field of the photoelectricity, concretely relates to laser lighting equipment of high power.

Background

With the maturity of laser diode technology, in the fields of laser display, laser processing and the like, a laser diode can be used for high-quality beams with uniform intensity distribution and small divergence angle. However, the output power of a single laser diode is low, and multiple laser diodes must be integrated to achieve high power output. The integration of multiple laser diodes, the high power will pose a significant challenge to the heat dissipation problem of the device.

Most of the existing laser lighting devices have the defects of large size, high technical difficulty in realizing high power and simultaneously solving the problem of heat dissipation and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser lighting apparatus of high power, laser lighting apparatus's heat dissipation problem can be solved to this equipment, improves lighting apparatus's security.

In order to achieve the technical effect, the utility model provides a following technical scheme:

the utility model provides a laser lighting equipment of high power, includes power, switch and light source, still includes heat abstractor, closes a bundle device, focusing lens, fluorescence piece and collimating lens group, the light source is the laser diode array, it on the fluorescence piece with the optical coupling of three routes laser diode array to close a bundle device, collimating lens group includes first collimating lens and second collimating lens, heat abstractor includes first heat abstractor and second heat abstractor, focusing lens, fluorescence piece, first collimating lens and second collimating lens set gradually along the laser light path direction that closes a bundle device coupling.

The further technical scheme is that the laser diode arrays are integrated by three laser diode arrays which are arranged in a concave shape.

The further technical scheme is that the laser wavelength emitted by the laser diode array is 400-500 nanometers.

The beam combining device comprises a reflector bracket, the included angle of two surfaces of the reflector bracket is 90 degrees, the installation surface is in a strip shape at intervals, and the reflector bracket is provided with a first mirror group and a second mirror group.

The further technical scheme is that the surfaces of the reflecting lenses of the first lens group and the second lens group are plated with high-reflection films.

The further technical scheme is that the first heat dissipation device is a first heat dissipation fin, one end of the first heat dissipation fin is arranged on one side of the laser diode array, and the other end of the first heat dissipation fin is in contact with the outside air.

The second heat dissipation device is a second heat dissipation fin, the fluorescent sheet and the first collimating lens are arranged in the same sealed shell, a heat-conducting medium is arranged outside the sealed shell, one end of the second heat dissipation fin is connected with the sealed shell through the heat-conducting medium, and the other end of the second heat dissipation fin is in contact with the outside air.

The further technical scheme is that the fluorescent sheet takes a sapphire substrate as a substrate, and the second heat dissipation device dissipates heat to the fluorescent sheet through sapphire.

The technical scheme is that the first collimating lens is a glass lens, and the second collimating lens is an aspheric glass lens.

Compared with the prior art, the utility model has the advantages of the utility model discloses a beam combining device carries out the coupling with the laser of three routes laser diode array, very big improvement the lighting power in finite space, set up a plurality of heat abstractor and dispel the heat to laser source, fine solution laser lighting apparatus's heat dissipation problem, improved lighting apparatus's security.

Drawings

Fig. 1 is a schematic diagram of an XOZ structure of a high-power laser lighting device according to the present invention;

fig. 2 is a schematic structural view of the beam combining device according to the present invention;

wherein: 101. 102 and 103 are three laser diode arrays, 104 is a first heat sink, 105 is a second heat sink, 106a and 106b are a first lens group and a second lens group, 107 is a focusing lens, 108 is a fluorescent sheet, 109 is a first collimating lens, 110 is a second collimating lens, and 111 is a reflector bracket.

Detailed Description

The invention will be further explained and explained with reference to the drawings and the embodiments.

Example 1

As shown in fig. 1, it is the XOZ plane structure diagram of a laser lighting apparatus of high power, including power, switch and light source, the power passes through the switch to be connected with the light source, still includes: the device comprises a heat dissipation device, a beam combining device, a focusing lens, a fluorescent sheet and a collimating lens group; the light source is a laser diode array, the beam combining device couples light of the three laser diode arrays onto the fluorescent sheet, the collimating lens group comprises a first collimating lens and a second collimating lens, the heat dissipation device comprises a first heat dissipation device and a second heat dissipation device, and the focusing lens, the fluorescent sheet, the first collimating lens and the second collimating lens are sequentially arranged along the direction of a laser light path coupled out by the beam combining device.

The laser diode array 101 is formed by arranging two 3 × 8 laser diode arrays in parallel and is parallel to the XOY plane. The

laser diode arrays

102 and 103 are both 4 × 8 laser diode arrays, and are both parallel to the YOZ plane. The three-way laser diode array forms a concave character. The laser light emitted by the laser diode array has a wavelength of 455 nm or 445 nm.

The angles between the first mirror group 106a and the X and Z directions are both 45 °, and light emitted from the laser diode array 102 is incident on the first mirror group 106a and then reflected to the focusing lens 107. The included angles between the second lens group 106b and the X and Z directions are 135 ° and 45 ° respectively, and light emitted from the laser diode array 103 is incident on the second lens group 106b and then reflected onto the focusing lens 107. Meanwhile, light emitted by the laser diode array 101 is directly incident on the focusing lens 107, and light of the three-way laser diode array is converged on the focusing lens 107. The reflective mirror surfaces of the first mirror group 106a and the second mirror group 106b are plated with high reflective films for blue light, so that the loss of laser light energy on the reflective mirrors is reduced.

The focusing lens 107 focuses the three converged laser beams onto the fluorescent plate, and the fluorescent plate 108 converts the blue light into white light. The phosphor sheet 108 is made of a sapphire substrate, and the high heat resistance of sapphire can effectively dissipate heat of the phosphor sheet.

The first collimating lens 109 and the second collimating lens 110 perform collimation and beam expansion on the wavelength-converted white light together. The first collimating lens 109 and the second collimating lens 110 are both glass lenses, and the glass materials are high temperature resistant, so that the optical properties are not easy to change; the first collimating lens 109 has a small diameter, and requires a high refractive index, a high transmittance, and high optical uniformity; the second collimating lens 110 is a lens with a larger size and diameter, and adopts an aspheric surface, and the expression of the aspheric surface is as follows:

in the formula (I), the compound is shown in the specification,

the aspheric surface can better reduce aberration and obtain more uniform illumination beams.

The first heat dissipation device 104 is a first heat dissipation fin, one end of the first heat dissipation device 104 is respectively tightly attached to the laser diode array 101, the laser diode array 102 and the laser diode array 103, and the other end of the first heat dissipation device is in contact with the outside air; the second heat dissipation device 105 is a second heat dissipation fin, one end of the second heat dissipation device 105 is connected with the closed shell through a fluorescent sheet and a heat conduction medium outside the closed shell of the first collimating lens, and the other end of the second heat dissipation device is in contact with the outside air. The first radiating fins and the second radiating fins are made of metal materials, high in heat conduction performance, and meanwhile the contact area of the fin structures and air is large, so that the influence of temperature rise on the laser diode array and the fluorescent sheet can be well reduced, and the stability of long-time lighting equipment is improved.

As shown in fig. 2, is a schematic structural diagram of the beam combining device of the present invention. The beam combining device includes a mirror frame 111, the mirror frame 111 is composed of two perpendicular surfaces, a first mirror group 106a and a second mirror group 106b are respectively installed on the two surfaces, and a reflective lens is installed on each surface at an interval to respectively reflect the light emitted by the laser diode array 102 and the laser diode array 103 to the focusing lens 107. The part of the mirror frame 111 where no mirror is mounted is hollow, and light emitted from the laser diode array 101 can be incident on the focusing lens 107 through the gap. The beam combining device couples three paths of laser, so that the power of the lighting equipment is greatly increased, and the space utilization rate of the lighting equipment is improved.

Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are merely preferred embodiments of the present invention, it is to be understood that the present invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.

Claims

1. The utility model provides a laser lighting equipment of high power, includes power, switch and light source, its characterized in that still includes heat abstractor, closes beam device, focusing lens, fluorescence piece and collimating lens group, the light source is the laser diode array, it couples the optical coupling of three routes laser diode array on the fluorescence piece to close beam device, collimating lens group includes first collimating lens and second collimating lens, heat abstractor includes first heat abstractor and second heat abstractor, focusing lens, fluorescence piece, first collimating lens and second collimating lens set gradually along the laser light path direction that closes beam device coupling.

2. The high power laser lighting device as claimed in claim 1, wherein the laser diode array is integrated by a three-way laser diode array arranged in a "concave" shape.

3. The high power laser lighting device as claimed in claim 1 or 2, wherein the laser wavelength emitted by the laser diode array is 400-500 nm.

4. The high power laser lighting device as claimed in claim 1, wherein the beam combiner comprises a mirror frame, the included angle between two surfaces of the mirror frame is 90 °, the installation surface is a spacing strip, and the mirror frame is provided with a first mirror group and a second mirror group.

5. The high power laser lighting device as claimed in claim 4, wherein the reflective lens surfaces of the first and second lens groups are coated with high reflective film.

6. The high-power laser lighting device as claimed in claim 1, wherein the first heat sink is a first heat sink, one end of the first heat sink is disposed at one side of the laser diode array, and the other end of the first heat sink is in contact with the outside air.

7. The high-power laser lighting device according to claim 1, wherein the second heat sink is a second heat sink, the fluorescent sheet and the first collimating lens are disposed in a same sealed housing, a heat conducting medium is disposed outside the sealed housing, one end of the second heat sink is connected to the sealed housing through the heat conducting medium, and the other end of the second heat sink is in contact with the outside air.

8. The high-power laser lighting device according to claim 7, wherein the phosphor sheet is made of a sapphire substrate, and the second heat sink dissipates heat of the phosphor sheet through sapphire.

9. The high power laser lighting device as claimed in claim 1, wherein the first collimating lens is a glass lens and the second collimating lens is an aspheric glass lens.