Laser lighting module and adjustment method

Abstract

The present invention discloses a laser lighting module and an adjustment method, the laser lighting module comprises a laser source unit, a wavelength conversion unit, a reflection unit, a bottom plate and a light source base for mounting the laser source unit, the wavelength conversion unit and the reflection unit are fixed on the bottom plate, a curved surface structure is provided in the reflection unit, the wavelength conversion unit is located at the focus of the curved surface structure, and the light source base is connected to the bottom plate through an adjustment member. By mounting the laser source unit on the light source base, and providing an adjustment member between the light source base and the bottom plate, the position of the laser source unit relative to the wavelength conversion unit and the reflection unit is adjusted, so that the light beam emitted by the laser source unit is projected to the focus of the wavelength conversion unit to ensure the lighting effect, the module has a simple structure, a small volume, and is quick and convenient to install and debug.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a laser lighting module and an adjustment method. Background Art

[0002] With the development of semiconductor technology, LED (Light Emitting Diode) light sources are gradually replacing traditional incandescent lamps and energy-saving lamps and becoming a universal lighting source due to their advantages of high efficiency, energy saving, environmental protection, low cost and long life. However, in application fields that require ultra-high brightness light sources such as stage lighting, car headlights, and projection displays, LED light sources are difficult to meet the requirements. Laser sources have the advantages of good collimation, high brightness, low energy consumption, long life and small size, so they are increasingly used in the above fields.

[0003] A laser lighting lamp is proposed in the prior art, which emits a laser beam by arranging a laser source outside the reflective bowl of the headlight and projects it onto the fluorescent material inside the reflective bowl of the headlight, stimulating fluorescence and emitting it in a specified direction after being reflected by the reflective bowl of the headlight, so as to form a beam traveling within a specified solid angle. The projection angle of the laser beam and the relative position of the reflective bowl of the headlight and the fluorescent material are fixed, that is, the fluorescent material intersects at the focus inside the reflective bowl of the headlight, and the laser beam passes through the reflective bowl of the headlight and projects onto the fluorescent material at a certain angle. However, due to the frequent assembly errors in actual applications, the position where the laser beam is projected onto the fluorescent material does not meet the design requirements, which ultimately affects the lighting effect. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and provides a laser lighting module with small volume and convenient adjustment and an adjustment method.

[0005] In order to solve the above technical problems, the technical solution of the present invention is:

[0006] A laser lighting module comprises a laser source unit, a wavelength conversion unit, a reflection unit, a bottom plate and a light source base for mounting the laser source unit, wherein the wavelength conversion unit and the reflection unit are fixed on the bottom plate, a curved surface structure is provided in the reflection unit, the wavelength conversion unit is located at the focus of the curved surface structure, and the light source base is connected to the bottom plate through an adjusting member.

[0007] Furthermore, the laser source unit and the wavelength conversion unit are respectively arranged on two sides of the curved surface structure of the reflection unit along the light path direction, and the curved surface structure is provided with a light-transmitting portion adapted to the laser beam.

[0008] Furthermore, the bottom plate is provided with a groove corresponding to the wavelength conversion unit, and the wavelength conversion unit is confined in the groove.

[0009] Furthermore, the reflection unit also includes planar structures located on both sides of the curved surface structure in a direction perpendicular to the light path and relatively parallel to each other, and the wavelength conversion unit is located at the focus of the curved surface structure.

[0010] Furthermore, a horizontal extension portion is provided on the outer side of the bottom of the curved surface structure, and the horizontal extension portion is fixed to the bottom plate.

[0011] Furthermore, the laser source unit includes a laser source, a focusing unit and an optical path turning unit which are sequentially arranged along the optical path.

[0012] Furthermore, the light source base includes a base and a bracket, the base is connected to the bottom plate through an adjusting member, the bracket is arranged on the base, and one side of the bracket is close to the reflection unit, and the bracket is provided with limiting grooves corresponding to the laser source, focusing unit and light path turning unit respectively, and the laser source, focusing unit and light path turning unit are respectively installed in the corresponding limiting grooves.

[0013] Furthermore, the base is L-shaped, including a vertical surface and a horizontal surface, the bottom surface of the bracket is arranged on the horizontal surface, and one side surface is close to the vertical surface, and the other relatively parallel side surface is close to the reflection unit, the vertical surface of the base is provided with a light source mounting groove on the side corresponding to the bracket, and the side of the vertical surface away from the bracket is provided with a light source pressure plate, and the horizontal surface is connected to the bottom plate through an adjustment member.

[0014] Furthermore, the base and the bracket are provided with a clearance groove adapted to the curved surface structure on one side corresponding to the reflection unit.

[0015] The present invention also provides a method for adjusting a laser lighting module, wherein the position of the laser source unit relative to the wavelength conversion unit and the reflection unit is adjusted by the adjusting member so that the light beam emitted by the laser source unit is projected to the focus of the wavelength conversion unit.

[0016] The laser lighting module and adjustment method provided by the present invention include a laser source unit, a wavelength conversion unit, a reflection unit, a bottom plate, and a light source base for mounting the laser source unit. The wavelength conversion unit and the reflection unit are fixed on the bottom plate. A curved surface structure is provided in the reflection unit. The wavelength conversion unit is located at the focus of the curved surface structure. The light source base is connected to the bottom plate through an adjustment member. By mounting the laser source unit on the light source base, and providing an adjustment member between the light source base and the bottom plate, the position of the laser source unit is adjusted so that the light beam emitted by the laser source unit is projected to the focus of the wavelength conversion unit to ensure the lighting effect. The module has a simple structure, a small volume, and is quick and convenient to install and debug. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1is a three-dimensional structural diagram of a laser lighting module in a specific embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A cross-sectional view of the laser illumination module shown;

[0019] Figure 3 It is a structural schematic diagram of a reflective bowl in a specific embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a bracket in a specific embodiment of the present invention;

[0021] Figure 5 is a schematic structural diagram of a base in a specific embodiment of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a bottom plate in a specific embodiment of the present invention.

[0023] As shown in the figure: 10, laser source unit; 110, laser source; 120, focusing unit; 130, optical path turning unit; 20, wavelength conversion unit; 30, reflection unit; 310, curved surface structure; 311, light-passing part; 320, plane structure; 330, horizontal extension part; 40, bottom plate; 410, groove; 50, light source base; 510, base; 511, vertical surface; 512, horizontal surface; 513, light source mounting groove; 520, bracket; 530, light source pressure plate; 540, arc-shaped clearance groove; 550, rectangular clearance groove; 60, adjustment part. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings:

[0025] like Figure 1-2As shown, the present invention provides a laser lighting module, including a laser source unit 10, a wavelength conversion unit 20, a reflection unit 30, a base plate 40 and a light source base 50 for installing the laser source unit 10, the wavelength conversion unit 20 and the reflection unit 30 are fixed on the base plate 40, a curved surface structure 310 is provided in the reflection unit 30, the wavelength conversion unit 20 is located at the focus of the curved surface structure 310, and the light source base 50 is connected to the base plate 40 through an adjustment member 60. Specifically, the laser beam emitted by the laser source unit 10 is projected onto the wavelength conversion unit 20 and excites fluorescence, and the fluorescence is reflected by the reflection unit 30 and then emitted in a specified direction to form a light beam traveling within a specified solid angle. A curved surface structure 310 is provided in the reflection unit 30. The curved surface structure 310 can be a parabola, an ellipsoid or other curved surface, as long as it meets the following conditions: it at least includes a part of the curved surface (parabolic curved surface) formed by rotating the parabola with the axis of symmetry of the parabola as the rotation axis and cut by the plane of the above-mentioned rotation axis. In terms of optical design, the light emitted by the laser source unit 10 is projected to the focus of the wavelength conversion unit 20 so that an ideal light spot can be achieved after the light emitted by the wavelength conversion unit 20 is collected and reflected by the reflection unit 30. However, due to the existence of various errors, there is often a certain deviation after the initial assembly. Therefore, by installing the laser source unit 10 on the light source base 50, and setting an adjustment member 60 between the light source base 50 and the bottom plate 40, the position of the laser source unit 10 relative to the wavelength conversion unit 20 and the reflection unit 30 is adjusted, so that the light beam emitted by the laser source unit 10 is projected to the focus of the wavelength conversion unit 20 to ensure the lighting effect. The module has a simple structure, a small size, and is quick and convenient to install and debug.

[0026] Preferably, the laser source unit 10 and the wavelength conversion unit 20 are disposed on both sides of the curved surface structure 310 of the reflective unit 30 along the optical path direction, and the curved surface structure 310 is provided with a light-passing portion 311 adapted to the laser beam. Figure 3 As shown, the light-through portion 311 may be a through hole, or a through hole provided with a transparent member that can transmit the laser beam, or a transparent member that can transmit the laser beam and is integrated with the reflective unit 30. The transparent member that can transmit the laser beam may be a transparent plate with a filter, which can transmit the laser and reflect the fluorescence excited by the wavelength conversion unit 20, so that the fluorescence emitted by the wavelength conversion unit 20 can be prevented from leaking from the light-through portion 311. The light-through portion 311 is used to guide the laser beam to the wavelength conversion unit 20, and it may be elliptical, circular or other shapes, and the size is adapted to the diameter of the laser beam so that the laser beam passes through. The laser source unit 10 is installed on the other side of the wavelength conversion unit 20 relative to the reflective unit 30, so that the structure and position of the laser source unit 10 can be flexibly designed and replaced according to the space conditions used.

[0027] Preferably, the reflective unit 30 further includes planar structures 320 located on both sides of the curved structure 310 in a direction perpendicular to the optical path and relatively parallel to each other, and the wavelength conversion unit 20 is located at the focus of the curved structure 310. Specifically, in order to avoid light leakage and damage to human eyes, relatively parallel planar structures 320 are provided on both sides of the curved structure 310 for shielding, thereby improving light utilization and lighting safety.

[0028] Please continue to refer to Figure 3 , a horizontal extension portion 330 is provided on the outer side of the bottom of the curved surface structure 310, and the horizontal extension portion 330 is fixed on the bottom plate 40. Specifically, the horizontal extension portion 330 extends outward from the outer side of the curved surface structure 310, is parallel to the bottom plate 40, and is fixed on the bottom plate 40 by at least two screws. In this embodiment, a positioning column can also be provided on the bottom plate 40 to further improve the positioning accuracy and installation reliability of the reflection unit 30.

[0029] like Figure 6 The bottom plate 40 is provided with a groove 410 corresponding to the wavelength conversion unit 20, and the wavelength conversion unit 20 is confined in the groove 410. Specifically, in this embodiment, the wavelength conversion unit 20 is a phosphor sheet, the position of the groove 410 corresponds to the focal position of the curved structure 310, and the shape is adapted to the shape of the phosphor sheet, so that the phosphor sheet is confined in the groove 410, and does not move relative to each other.

[0030] Please continue to refer to Figure 2 , the laser source unit 10 includes a laser source 110, a focusing unit 120 and an optical path turning unit 130 which are sequentially arranged along the optical path. Specifically, in the present embodiment, there is one laser source 110, and of course, multiple laser sources 110 may be arranged according to actual needs. The focusing unit 120 may adopt a focusing lens or other focusing elements to converge the laser beam. The optical path turning unit 130 is used to deflect the laser beam to change its traveling direction and project it to a suitable position on the upper surface of the wavelength conversion unit 20, so as to make the structure of the entire lighting module compact. The optical path turning unit 130 may adopt a plane reflector or a curved reflector, or a metal film or a dielectric film, etc., as long as the same effect can be achieved.

[0031] Preferably, the light source base 50 includes a base 510 and a bracket 520, the base 510 is connected to the bottom plate 40 through an adjustment member 60, the bracket 520 is arranged on the base 510, and one side of the bracket is close to the reflection unit 30, and the bracket 520 is provided with limiting grooves corresponding to the laser source 110, the focusing unit 120 and the light path turning unit 130, respectively, and the laser source 110, the focusing unit 120 and the light path turning unit 130 are respectively limited in the corresponding limiting grooves. Specifically, the laser source 110 is a laser diode, the focusing unit 120 is a focusing lens, and the light path turning unit 130 is a reflector. The bracket 520 is provided with a cylindrical groove adapted to the shape of the laser source 110, a card slot adapted to the shape of the focusing unit 120, and a rectangular through groove corresponding to the light path turning unit 130 in sequence. The laser source 110 is limited to the corresponding cylindrical groove, the focusing unit 120 is limited to the corresponding card slot, and the light path turning unit 130 is limited to the corresponding rectangular through groove. In this embodiment, the rectangular through groove is inclined so that the light path turning unit 130 can better reflect light to the wavelength conversion unit 20, and for the fixing effect, the four corners of the focusing unit 120 and the light path turning unit 130 are fixed by glue.

[0032] like Figure 5 As shown, the base 510 is L-shaped, including a vertical surface 511 and a horizontal surface 512. The bottom surface of the bracket 520 is arranged on the horizontal surface 512, and one side thereof is close to the vertical surface 511, and the other relatively parallel side is close to the reflection unit 30. A light source installation groove 513 is arranged on the side of the vertical surface 511 of the base 510 corresponding to the bracket 520, and a light source pressing plate 530 is arranged on the side of the vertical surface 511 away from the bracket 520. The horizontal surface 512 is connected to the bottom plate 40 through an adjusting member 60. Specifically, the head of the laser source 110 is arranged in the cylindrical groove in the bracket 520, and the tail is arranged in the light source installation groove 513 of the vertical surface 511, and is connected to an external power source through the light source pressing plate 530.

[0033] like Figure 4-5 As shown, the base 510 and the bracket 520 are both provided with a clearance groove adapted to the reflective unit 30 on one side corresponding to the reflective unit 30. An arc-shaped clearance groove 540 corresponding to the curved surface structure 310 and a rectangular clearance groove 550 corresponding to the horizontal extension portion 330 are provided on the base 510, and an arc-shaped clearance groove 540 corresponding to the curved surface structure 310 is provided on the bracket 520, so that the base 510 and the bracket 520 are closely arranged to the reflective unit 30, thereby improving the compactness of the installation and reducing the volume of the lighting module.

[0034] The adjustment method of the laser lighting module provided by the present invention is specifically to adjust the position of the laser source unit 10 relative to the wavelength conversion unit 20 and the reflection unit 30 through the adjustment member 60, so that the light beam emitted by the laser source unit 10 is projected to the focus of the wavelength conversion unit 20. In this embodiment, the adjustment member 60 includes at least two adjustment screws, and the adjustment screws are arranged with a gap. Specifically, the base 510 and the bottom plate 40 are connected by two adjustment screws arranged with a gap. During the adjustment process, the laser source 110 is lit, and the relative position of the base 510 and the bottom plate 40 is adjusted by the adjustment screws, thereby adjusting the position of the laser source unit 10, so that the light beam emitted by the laser source unit 10 is projected to the focus of the wavelength conversion unit 20.

[0035] In summary, the present invention provides a laser lighting module and an adjustment method, the laser lighting module comprises a laser source unit 10, a wavelength conversion unit 20, a reflection unit 30, a bottom plate 40 and a light source base 50 for mounting the laser source unit 10, the wavelength conversion unit 20 and the reflection unit 30 are fixed on the bottom plate 40, a curved surface structure 310 is provided in the reflection unit 30, the wavelength conversion unit 20 is located at the focus of the curved surface structure 310, and the light source base 50 is connected to the bottom plate 40 through an adjustment member 60. By mounting the laser source unit 10 on the light source base 50, and providing the adjustment member 60 between the light source base 50 and the bottom plate 40, the position of the laser source unit 10 relative to the wavelength conversion unit 20 and the reflection unit 30 is adjusted, so that the light beam emitted by the laser source unit 10 is projected to the focus of the wavelength conversion unit 20 to ensure the lighting effect, the module has a simple structure, a small volume, and is quick and convenient to install and debug.

[0036] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. Various omissions, substitutions and changes within the scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser lighting module, characterized in that: The invention comprises a laser source unit, a wavelength conversion unit, a reflection unit, a bottom plate and a light source base for mounting the laser source unit, wherein the wavelength conversion unit and the reflection unit are fixed on the bottom plate, a curved surface structure is arranged in the reflection unit, the wavelength conversion unit is located at the focus of the curved surface structure, the light source base is connected to the bottom plate through an adjustment member, the adjustment member comprises at least two adjustment screws, and the adjustment screws are arranged at a gap; the laser source unit comprises a laser source, a focusing unit and an optical path turning unit arranged in sequence along an optical path, the light source base comprises a base and a bracket, and the base is connected to the bottom plate through an adjustment member The bracket is arranged on the base, and one side of the bracket is close to the reflecting unit. The bracket is provided with limiting grooves corresponding to the laser source, the focusing unit and the optical path turning unit respectively. The laser source, the focusing unit and the optical path turning unit are respectively installed in the corresponding limiting grooves; the base is L-shaped, including a vertical surface and a horizontal surface. The bottom surface of the bracket is arranged on the horizontal surface, and one side surface is close to the vertical surface, and the other relatively parallel side surface is close to the reflecting unit. A light source mounting groove is provided on the side of the vertical surface of the base corresponding to the bracket, and a light source pressure plate is provided on the side of the vertical surface away from the bracket. The horizontal surface is connected to the bottom plate through an adjusting member.

2. The laser lighting module according to claim 1, characterized in that: The laser source unit and the wavelength conversion unit are arranged on two sides of the curved surface structure of the reflection unit along the light path direction, and a light-transmitting portion adapted to the laser beam is arranged on the curved surface structure.

3. The laser lighting module according to claim 1, characterized in that: The bottom plate is provided with a groove corresponding to the wavelength conversion unit, and the wavelength conversion unit is confined in the groove.

4. The laser lighting module according to claim 1, characterized in that: The reflection unit also includes planar structures located on both sides of the curved surface structure in a direction perpendicular to the light path and relatively parallel to each other, and the wavelength conversion unit is located at the focus of the curved surface structure.

5. The laser lighting module according to claim 4, characterized in that: A horizontal extension portion is disposed on the outer side of the bottom of the curved surface structure, and the horizontal extension portion is fixed to the bottom plate.

6. The laser lighting module according to claim 1, characterized in that: The base and the bracket are both provided with a clearance groove adapted to the reflection unit on one side corresponding to the reflection unit.

7. The adjustment method of the laser illumination module according to any one of claims 1 to 6, characterized in that: The position of the laser source unit relative to the wavelength conversion unit and the reflection unit is adjusted by the adjusting member so that the light beam emitted by the laser source unit is projected to the focus of the wavelength conversion unit.

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