CN116819787A - Laser light source and laser light source system - Google Patents
Laser light source and laser light source system Download PDFInfo
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- CN116819787A CN116819787A CN202310807529.3A CN202310807529A CN116819787A CN 116819787 A CN116819787 A CN 116819787A CN 202310807529 A CN202310807529 A CN 202310807529A CN 116819787 A CN116819787 A CN 116819787A
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- 238000006243 chemical reaction Methods 0.000 claims description 35
- 239000010410 layer Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000004020 luminiscence type Methods 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 16
- 239000012528 membrane Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0916—Adapting the beam shape of a semiconductor light source such as a laser diode or an LED, e.g. for efficiently coupling into optical fibers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
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Abstract
The application discloses a laser light source, which comprises a laser device, wherein the laser device comprises at least one laser for generating at least one light beam with different divergence angles along a first direction and a second direction; the light homogenizing rod comprises a light inlet end face and a light outlet end face, wherein the light inlet end face and the light outlet end face are square; the light incident end face receives the at least one light beam with different divergence angles along the first direction and the second direction, the light emergent end face outputs the light beam subjected to light homogenization, and a diagonal line of the light incident end face is parallel to the first direction or the second direction. So that the intensity and color distribution of the emergent light beam on the fluorescent light source surface are homogenized, and the required homogenizing rod has small size, thereby achieving the effects of low loss and low cost.
Description
The application relates to a divisional application of a laser light source and a laser light source system, wherein the application number is 201910807941.9, the application date is 2019, and the application date is 08 and 29.
Technical Field
The application relates to the field of light sources, in particular to a laser light source and a laser light source system.
Background
The laser has the advantages of small chip, high brightness, concentrated emitting direction, high power, good quality of laser beam and the like, and when the laser irradiates the wavelength conversion device, an illumination light source with small light spot and high brightness can be obtained.
However, since the light beam emitted by the laser is gaussian, the power density of the center is very high, and when the light beam is incident on the wavelength conversion element, the local heat is very high in the center, so that the overall brightness of the light is limited, the conversion efficiency of the laser fluorescence is reduced, and in addition, the light intensity and the color are not uniform on the fluorescent light source surface.
Therefore, in order to obtain a light source with high brightness, high efficiency and uniform light beam intensity and color, the laser beam is generally subjected to light homogenizing treatment and then enters and irradiates the wavelength conversion element to be converted into a fluorescent light source, and the conventional light homogenizing mode mostly adopts a square rod or a compound eye and is arranged beside a laser, so that the laser beam is converged on the light incident end surface of the square rod or the compound eye, and then the light is emitted on the light emitting end surface to obtain uniform light beams.
However, when the square bar is adopted for homogenizing light, the more the light beam is reflected, the more uniform the light beam is, the longer the length of the square bar is needed, and the defects of large light loss, high cost, large product size and the like caused by the fact that the square bar is too long are overcome.
Disclosure of Invention
The application mainly solves the technical problems of providing a laser light source and a laser light source system so as to homogenize the intensity and color distribution of an emergent light beam on a fluorescent light source surface, and the required light homogenizing rod has small size, thereby achieving the effects of low loss and low cost.
In order to solve the technical problems, the application adopts a technical scheme that:
there is provided a laser light source comprising:
a laser device, including at least one laser, for generating at least one light beam with different divergence angles along a first direction and along a second direction;
the light homogenizing rod comprises a light incident end face and a light emergent end face, wherein the light incident end face and the light emergent end face are square, the light incident end face receives at least one light beam with different divergence angles along a first direction and a second direction, the light emergent end face outputs a light beam subjected to light homogenizing, and a diagonal line of the light incident end face is parallel to the first direction or the second direction;
the laser device comprises a plurality of lasers, wherein each laser respectively generates light beams with different divergence angles along a first direction and a second direction;
and the first direction is perpendicular to the second direction.
In order to solve the technical problems, the application adopts another technical scheme that:
the laser light source outputs a uniform light beam to the wavelength conversion device, and the wavelength conversion device receives the uniform light beam and generates stimulated luminescence with a wavelength range different from that of the uniform light beam.
The beneficial effects of the application are as follows: compared with the prior art, the application shortens the length of the light homogenizing rod and homogenizes the emergent light beam by arranging the diagonal line of the light homogenizing rod and the first direction or the second direction of the emergent light beam of the laser in a parallel mode, thereby realizing low loss and low cost.
Drawings
FIGS. 1 a-1 c are schematic diagrams of structures in which the fast and slow axes of laser beams are parallel to the edges of a light homogenizing rod;
FIGS. 2 a-2 b are schematic diagrams of the structures of the laser beam fast and slow axes and the diagonal lines of the dodging rods;
FIG. 3 is a schematic view of the structure of a laser light source of the present application;
FIG. 4a is a schematic view of a first embodiment of a light homogenizing rod of the laser light source of the present application;
FIGS. 4b and 4c are schematic structural views of a second embodiment of a light homogenizing rod in the laser light source of the present application;
fig. 4d and fig. 4e are schematic structural views of a third embodiment of a light homogenizing rod in the laser light source of the present application;
FIG. 4f is a schematic view of a fourth embodiment of a light homogenizing rod of the laser light source of the present application;
FIG. 5a is a schematic diagram of a first embodiment of a plurality of lasers and a light homogenizing rod in a laser light source according to the present application;
FIG. 5b is a schematic diagram of a second embodiment of a plurality of lasers and light homogenizing bars in a laser light source according to the present application;
FIG. 5c is a schematic diagram of a third embodiment of a plurality of lasers and a light homogenizing rod in a laser light source according to the present application;
FIG. 6 is a schematic diagram of a first embodiment of a laser light source system of the present application;
FIG. 7 is a schematic diagram of a second embodiment of a laser light source system of the present application;
fig. 8a and 8b are schematic structural views of a third embodiment of the laser light source system of the present application.
Detailed Description
The present application will be described in detail with reference to the accompanying drawings and examples.
The application provides a laser light source and a laser fluorescent light source system, wherein the laser light source comprises a laser device, the laser device comprises at least one laser, the laser generates light beams with different divergence angles along a first direction (X axis) and a second direction (Y axis), a light homogenizing square bar is arranged, and a diagonal line of the light homogenizing square bar is parallel or perpendicular to the X axis or the Y axis.
The basic principle of light homogenizing of the light homogenizing rod is that light spots at the outlet of the light homogenizing rod are uniform through superposition of light beams after multiple reflections on the inner wall of the light homogenizing rod, the more the reflection times are, the more uniform the light spots are, and when the length and the width of the light homogenizing rod are determined, the larger the angle of the laser beam is, the more the reflection times are, and the more uniform the light spots are.
The beam emitted by the laser is generally different in divergence angle in the two directions of the fast axis and the slow axis, so that uniform light can be obtained only when the length of a square rod required by the direction with a larger divergence angle is shorter, and uniform light can be obtained only when the length of the square rod required by the direction with a smaller divergence angle is relatively longer. If the entire spot is homogenized, the required square bar length needs to be designed in the direction of small divergence angle, and the square bar length is relatively long.
While longer square bars result in greater power losses, higher costs, and larger product sizes, which is disadvantageous. It is therefore desirable in design to have the square bars shorter and better on the basis of beam homogenization.
Referring to fig. 1a, a beam of light emitted from a laser 101 and having a divergence angle along a fast axis and a divergence angle along a slow axis, for example, a divergence angle along a fast axis is 45 degrees, a divergence angle along a slow axis is 14 degrees, and the beam of light is converged into a light homogenizing rod with a side length of 0.4mm and a length of 17mm through a lens system 102, and when the fast axis and the slow axis of the laser are parallel to the side of the light homogenizing rod 103, a light spot at an outlet of the light homogenizing rod 103 is uneven in left and right directions, as shown in fig. 1 b. When the length of the light homogenizing rod is increased to 27mm, the light spot at the outlet of the light homogenizing rod is uniform, as shown in fig. 1 c.
Referring to fig. 2a, the optical path system is the same as that of fig. 1a, but the direction of the fast and slow axes of the laser 101 is parallel to the diagonal of the light bar 103, and when the light bar length is 17mm, the spot at the exit of the light bar is already uniform, as shown in fig. 2 b.
In the above description, when the divergence angles of the light beam generated by the laser along the first direction (such as the X direction) and along the second direction (such as the Y direction) are different, the diagonal direction of the light homogenizing rod is parallel to the X or Y direction, and the shorter length of the light homogenizing rod can achieve the light homogenizing effect compared with the case that the side of the light homogenizing rod is parallel to the X or Y direction.
Fig. 3 is a schematic structural diagram of a laser light source according to the present application. The laser light source comprises a laser device, and the laser device comprises at least one laser 301 for generating at least one light beam with different divergence angles along a first direction and a second direction;
the light homogenizing rod 303 comprises a light incident end face and a light emergent end face, the light incident end face and the light emergent end face are square, a diagonal line X0 of the light incident end face and the light emergent end face is parallel to the first direction or the second direction, the light incident end face of the light homogenizing rod 303 receives light beams with different divergence angles along the first direction and the second direction, the light emergent end face outputs the light beams subjected to light homogenizing, and the light beams are subjected to light homogenizing through multiple reflections in the light homogenizing rod 303.
The laser light source may further include a lens 302, where the lens 302 is disposed between the laser 301 and the light homogenizing rod 303, and is configured to collect at least one light beam generated by the laser 301 and having different divergence angles along the first direction and the second direction on the light incident end surface of the light homogenizing rod 303. The number of lenses 302 corresponds to the number of lasers 301 or all the light beams emitted from the lasers 301 are converged by one large lens. The number of lasers is set as required.
Fig. 4a is a schematic structural diagram of a first embodiment of a light homogenizing rod in a laser light source according to the present application. The light homogenizing rod 3 is a solid square rod body, and comprises a light incident end face and a light emergent end face, wherein the light incident end face and the light emergent end face are square, a diagonal line of the light incident end face and the light emergent end face of the light homogenizing rod is parallel to the first direction (such as an X axis or a fast axis) or the second direction (such as a Y axis or a slow axis) so as to realize that a light beam emitted by the laser passes through the light homogenizing rod and then outputs a light homogenizing beam.
Fig. 4b is a schematic structural diagram of a second embodiment of the light homogenizing rod in the laser beam according to the present application. The second embodiment differs from the first embodiment described above in that: the light homogenizing rod is an optical fiber and comprises a solid square rod core 31 and a wrapping layer 32 covering the rod core.
Referring to fig. 4c, the optical fiber further comprises a coating layer 33 covering the wrapping layer 32.
The square rod core comprises a light-in end face and a light-out end face, the light-in end face and the light-out end face are square, one diagonal line of the light-in end face and the light-out end face of the light-homogenizing rod is parallel to the first direction (such as an X axis or a fast axis) or the second direction (such as a Y axis or a slow axis) so as to realize that a light beam emitted by the laser passes through the light-homogenizing rod and then outputs a light-homogenizing light beam.
Referring to fig. 4d and fig. 4e, a schematic structural diagram of a light homogenizing rod in a laser light source according to a third embodiment of the present application is shown. The third embodiment, as shown in fig. 4d, differs from the first embodiment described above in that: the light homogenizing rod 6 is conical and comprises a light incident end face and a light emergent end face, the light incident end face is smaller than the light emergent end face, at least one beam 1 emitted by the laser device is converged on the light incident end face of the light homogenizing rod 6 along the first direction and along the divergence angle of the second direction, and the diagonal line of the light homogenizing rod 6 is parallel to the first direction (X axis, fast axis) or the second direction (Y axis, slow axis) of the beam.
As shown in fig. 4e, the light homogenizing rod 6 is tapered, and includes a light incident end surface and a light emergent end surface, the light incident end surface is larger than the light emergent end surface, the light beams 1 emitted from the laser and having different divergence angles along the first direction and the second direction are converged on the light incident end surface of the light homogenizing rod 6, and the diagonal line of the light homogenizing rod is parallel to the X axis or the Y axis of the light beams.
Referring to fig. 4f, a schematic structural diagram of a fourth embodiment of a light homogenizing rod in the laser light source of the present application is shown. The fourth embodiment differs from the first embodiment described above in that: the light homogenizing rod 7 is a hollow rod and comprises a light incident end face and a light emergent end face, the light incident end face of the light homogenizing rod penetrates through the light homogenizing rod until the light emergent end face forms a square hole 34, the square hole 34 and the light homogenizing rod 7 have the same central line, light beams 1 emitted by the laser and having different divergence angles along the first direction and the second direction are converged on the light incident end face of the light homogenizing rod 7, and the diagonal line of the light homogenizing rod is parallel to the X axis or the Y axis of the light beams.
The laser beams can be beams synthesized by a plurality of lasers, wherein the fast axis and the slow axis of the beams emitted by different lasers can be in the same direction or perpendicular to each other, and the diagonal line of the light homogenizing rod is still parallel to the fast axis and the slow axis. Meanwhile, as the arrangement of different lasers in the direction X, Y is different in quantity or the interval is different, the divergence angles of light beams entering the square rod entrance are different in size in the two directions X, Y.
Referring to fig. 5a, a schematic structural diagram of a first embodiment of a plurality of lasers and a light homogenizing rod in a laser light source according to the present application is shown. The fast axis and the slow axis of the light beams emitted by different lasers are arranged in the same way. I.e. the fast axes of the beams emitted by the plurality of lasers are all parallel to said first direction. The outgoing light beams 1 having different divergence angles in the first direction and the second direction are converged on the lens group 42, and the outgoing light beams are converged on one end face of the light rod 41 by the lens group 42. The diagonal of the light homogenizing rod is parallel to the X axis or the Y axis of the emergent light beam.
Referring to fig. 5b, a schematic structural diagram of a second embodiment of a plurality of lasers and a light homogenizing rod in the laser light source of the present application is shown. The fast axis and slow axis of different lasers are perpendicular to each other. I.e. the fast axis of some of the laser outgoing beams of the plurality of lasers is parallel to said first direction and the fast axis of the remaining laser outgoing beams is perpendicular to said first direction. For example, in one embodiment, if the plurality of lasers are arranged in two rows, wherein the fast axis of the outgoing beam of one row of lasers is parallel to the first direction, and the fast axis of the outgoing beam of the other row of lasers is perpendicular to the first direction. In another embodiment, if the plurality of lasers are arranged in two rows, wherein the fast axis of the outgoing beam of one row of lasers is parallel to the first direction, and the fast axis of the outgoing beam of the other row of lasers is perpendicular to the first direction. In another embodiment, if the plurality of lasers are arranged in two rows, wherein the fast axes of the laser outgoing beams of one row and the singular arrangement are parallel to the first direction, and the fast axes of the laser outgoing beams of the even arrangement are perpendicular to the first direction; the fast axis of the laser outgoing beams of another row and singular arrangement is perpendicular to the first direction, and the fast axis of the laser outgoing beams of the even arrangement is parallel to the first direction. Or in another embodiment, if the plurality of lasers are arranged in two rows, wherein the fast axis of the laser outgoing beam of one row of the single-number arrangement is parallel to the first direction, and the fast axis of the laser outgoing beam of the double-number arrangement is perpendicular to the first direction; the fast axis of the laser emergent beams of another column of the single arrangement is perpendicular to the first direction, and the fast axis of the laser emergent beams of the double arrangement is parallel to the first direction. The light beams 1 emitted from the plurality of lasers in the first direction and the second direction and having different divergence angles are converged on the lens group 42, and the emitted light beams are converged on one end surface of the light homogenizing rod 41 by the lens group 42. The diagonal of the light homogenizing rod is parallel to the X axis or the Y axis of the emergent light beam.
Referring to fig. 5c, a schematic structural diagram of a third embodiment of a plurality of lasers and a light homogenizing rod in the laser light source of the present application is shown. The plurality of lasers are arranged in an array along the first direction and the second direction, and the number and/or the interval between the lasers arranged along the first direction and the lasers arranged along the second direction are different. For example, in one embodiment, the number of lasers arranged in the first direction is a (e.g., 1, 2, 3 … … a-1, a), the number of lasers arranged in the second direction is b (e.g., 1, 2, 3 … … b-1, b), the distance between two adjacent lasers arranged in the first direction is 1mm, and the distance between two adjacent lasers arranged in the second direction is 2mm. The plurality of lasers converge light beams 1 having different divergence angles in the first direction and the second direction on the lens group 42, and the lens group 42 converges the outgoing light beams on one end face of the light homogenizing rod 41. The diagonal of the light homogenizing rod is parallel to the X axis or the Y axis of the emergent light beam.
The laser light homogenizing scheme provided by the application can be applied to a laser fluorescent light source system.
Referring to fig. 6, a first embodiment of the laser light source system of the present application is schematically shown. The laser light source system comprises the laser light source and the wavelength conversion device of any embodiment, wherein the laser light source outputs a dodging light beam to the wavelength conversion device, and the wavelength conversion device receives the dodging light beam and generates stimulated luminescence with a wavelength range different from that of the dodging light beam.
In this embodiment, the laser light source system further includes a lens 52 and a light collection assembly 53;
a lens 52 for converging the uniform light beam outputted from the laser light source;
wavelength conversion means 54 for receiving the collected homogenized light beam from the lens to generate a fluorescence beam; a kind of electronic device with high-pressure air-conditioning system
The light collecting component 53 is a reflective cup, and is configured to receive the fluorescent light beam from the wavelength conversion device 54 and output the fluorescent light beam after reflection. The light reflecting cup is provided with a light transmitting area for transmitting the light homogenizing beam emitted by the laser light source, the light transmitting area is a through hole arranged on the light reflecting cup, and the through hole is hollowed or is internally provided with a diaphragm which transmits the light homogenizing beam emitted by the laser light source and can reflect fluorescence.
The light beams 1 with different divergence angles along the first direction and the second direction are converged on the light-in end face of the light-homogenizing rod 51, the uniform light beams obtained after multiple reflections inside the light-homogenizing rod 51 are emitted from the light-emitting end face of the light-homogenizing rod 51, the diagonal line of the light-homogenizing rod 51 is parallel to the fast axis or the slow axis of the emergent light beams, the light beams are converged by the lens 52 and then irradiated onto the wavelength conversion device 54 through the through holes on the reflection light cup to excite fluorescent light beams, and the fluorescent light beams are reflected by the light collection component 53 (and the reflection light cup) and then output.
The light spot power density distribution of the light beam irradiated on the wavelength conversion element 54 after being homogenized by the homogenizing rod 51 is uniform, so that the problems of reduced laser fluorescence conversion efficiency and reduced overall light source brightness caused by too high local power density are avoided.
Referring to fig. 7, a schematic diagram of a second embodiment of the laser light source system of the present application is shown. The second embodiment differs from the first embodiment described above (as shown in fig. 5) in that: the light collection assembly 63 includes a regional patch and a fluorescence collection lens group 65. The laser light source system includes:
and a lens 62 for converging the uniform light beam outputted from the laser light source.
The wavelength conversion device 66 is configured to receive the collected homogenized light beam to generate a fluorescent light beam, where the fluorescent light beam passes through the fluorescent collection lens group and is reflected by the area diaphragm and then output.
A light collection assembly 63, wherein the light collection assembly 63 comprises a region membrane and a fluorescence collection lens group 65 for receiving the fluorescence beam from the wavelength conversion device 66 and outputting a laser fluorescence light source after reflection. The area diaphragm comprises a central area capable of transmitting a uniform light beam emitted by the laser light source and a peripheral area which is arranged at the periphery of the central area and can reflect fluorescence.
The light beams 1 with different emission divergence angles along the first direction and the second direction are converged on the light incident end surface of the light homogenizing rod 61, the uniform light beams obtained after multiple reflections inside the light homogenizing rod 61 are emitted by the light emergent end surface of the light homogenizing rod 61, the diagonal line of the light homogenizing rod is parallel to the fast axis or the slow axis, the light beams are collimated by the lens 62, pass through the central area of the area membrane, are converged on the wavelength conversion device 66 by the fluorescence collecting lens group 65, excite fluorescence, the fluorescence is received by the fluorescence collecting lens group 65, and are reflected by the peripheral area of the area membrane and then output.
Referring to fig. 8a and 8b, a third embodiment of the laser light source system according to the present application is shown. The third embodiment differs from the first embodiment described above (as shown in fig. 5) in that: the wavelength conversion device is a transmission type fluorescence wavelength conversion device.
As shown in fig. 8a, the wavelength conversion device 72 is a transmissive fluorescent wavelength conversion device, and the wavelength conversion device 72 is attached to the light emitting end surface of the light homogenizing rod 71.
As shown in fig. 8b, the wavelength conversion device 72 is a transmissive fluorescent wavelength conversion device, and the wavelength conversion device 72 is attached to the light emitting end surface of the light homogenizing rod 71 through a transparent carrier 74.
The light beams 1 with different divergence angles along the first direction and the second direction are converged on the light incident end surface of the light homogenizing rod 71, the uniform light beams obtained after multiple reflections inside the light homogenizing rod 71 are emitted from the light emergent end surface of the light homogenizing rod 71, the diagonal line of the light homogenizing rod is parallel to the fast axis or the slow axis, a wavelength conversion device 72 (i.e. a fluorescence wavelength conversion device) is arranged beside the light homogenizing rod 71, such as a fluorescence sheet, the fluorescence sheet can be directly attached to the light homogenizing rod 71 (as shown in fig. 8 a), a transition carrier 74 (as shown in fig. 8 b) can be arranged between the light homogenizing rod 71 and the fluorescence sheet, and the uniform light beams irradiate on the fluorescence sheet to excite fluorescence to be output as a laser fluorescence light source 73. The transition support 74 may be an air or transparent support.
In this embodiment, the laser light source only describes a part of related schemes, and other schemes are the same as those of the laser light source in the prior art, and are not described herein again.
The laser light source and the laser light source system realize the advantages of low loss and low cost by arranging the diagonal line of the light homogenizing rod and the fast axis or the slow axis of the emergent light beam of the laser in parallel so as to shorten the length of the light rod and homogenize the emergent light beam.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (12)
1. A laser light source, comprising:
a laser device, including at least one laser, for generating at least one light beam with different divergence angles along a first direction and along a second direction;
the light homogenizing rod comprises a light incident end face and a light emergent end face, wherein the light incident end face and the light emergent end face are square, the light incident end face receives at least one light beam with different divergence angles along a first direction and a second direction, the light emergent end face outputs a light beam subjected to light homogenizing, and a diagonal line of the light incident end face is parallel to the first direction or the second direction;
the laser device comprises a plurality of lasers, wherein each laser respectively generates light beams with different divergence angles along a first direction and a second direction;
and the first direction is perpendicular to the second direction.
2. The laser light source of claim 1, further comprising a lens disposed between the laser and the light rod for focusing at least one light beam generated by the laser device at the light entrance end surface of the light rod with different divergence angles along the first direction and along the second direction.
3. The laser light source of claim 1, wherein the light homogenizing rod is an optical fiber and comprises a square rod core and a wrapping layer wrapping the square rod core, and the square rod core comprises a light inlet end face and a light outlet end face.
4. A laser light source as claimed in claim 3, wherein the optical fiber further comprises a coating layer surrounding the cladding layer.
5. The laser light source according to claim 1, wherein the light homogenizing rod is square, and an area of an incident end face of the light homogenizing rod is equal to an area of the emergent end face; or (b)
The light homogenizing rod is conical, and the area of the light incident end face of the light homogenizing rod is larger than the area of the light emergent end face, or the area of the light emergent end face of the light homogenizing rod is larger than the area of the light incident end face.
6. The laser light source of claim 1, wherein the light bar is hollow, and a square hole is formed along the light entrance end surface of the light bar and penetrates through the light bar until the light exit end surface, and the square hole and the light bar have the same central line.
7. The laser light source of claim 1, wherein the fast axes of the light beams generated by the plurality of lasers are all parallel to the first direction.
8. The laser light source of claim 1, wherein the fast axis of the beams generated by some of the plurality of lasers is parallel to the first direction and the fast axis of the beams generated by the remaining lasers is perpendicular to the first direction.
9. The laser light source of claim 1, wherein the plurality of lasers are arranged in an array along a first direction and along a second direction, the number and/or spacing of the lasers arranged along the first direction being different from the number and/or spacing of the lasers arranged along the second direction.
10. A laser light source system comprising the laser light source according to any one of claims 1 to 9 and a wavelength conversion device that outputs a dodging light beam to the wavelength conversion device, the wavelength conversion device receiving the dodging light beam and generating stimulated luminescence different from a wavelength range of the dodging light beam.
11. The laser light source system of claim 10, further comprising a lens and a light collection assembly;
the lens is used for converging the uniform light beams output by the laser light source;
the wavelength conversion device is used for receiving the converged uniform light beam from the lens to generate a fluorescent light beam; a kind of electronic device with high-pressure air-conditioning system
The light collecting component is used for receiving the fluorescent light beam from the wavelength conversion device and outputting the fluorescent light beam after reflection.
12. The laser light source system according to claim 10, wherein the wavelength conversion device is a transmissive wavelength conversion device, and the wavelength conversion device is disposed on the light emitting end face of the light rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310807529.3A CN116819787A (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807941.9A CN112445005B (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
| CN202310807529.3A CN116819787A (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807941.9A Division CN112445005B (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
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| Publication Number | Publication Date |
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| CN116819787A true CN116819787A (en) | 2023-09-29 |
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| CN201910807941.9A Active CN112445005B (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
| CN202310807529.3A Pending CN116819787A (en) | 2019-08-29 | 2019-08-29 | Laser light source and laser light source system |
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| CN112630127B (en) * | 2021-03-10 | 2021-05-28 | 中国科学院上海高等研究院 | Vacuum particle counter |
| CN114216100A (en) * | 2021-11-19 | 2022-03-22 | 广州旭福光电科技有限公司 | Transmission type laser lighting module, light homogenizing method and application |
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| US6771683B2 (en) * | 2000-10-26 | 2004-08-03 | Coherent, Inc. | Intra-cavity beam homogenizer resonator |
| JP4834934B2 (en) * | 2001-07-25 | 2011-12-14 | 株式会社ニコン | Color synthesizing optical device and projection display device |
| DE102005004216A1 (en) * | 2005-01-29 | 2006-08-03 | Carl Zeiss Smt Ag | Illumination system for projection exposure machine, supports homogenizing elements rotatably about optical axis, to set one rotational angle symmetrically in relation to axis of newly formed co-ordinate system |
| CN104111532B (en) * | 2013-04-20 | 2017-08-29 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant source system |
| CN103579905B (en) * | 2013-11-11 | 2016-02-10 | 西北大学 | Space overlapping coupling high-power semiconductor laser folds array 1 system |
| CN103744186B (en) * | 2014-01-13 | 2016-03-30 | 中国联合网络通信集团有限公司 | A kind of beam shaping system of laser diode linear array/area array |
| JP6732407B2 (en) * | 2015-03-20 | 2020-07-29 | 日東電工株式会社 | Optical laminate, method for manufacturing the same, and image display device using the optical laminate |
| CN105759411B (en) * | 2016-04-15 | 2019-02-19 | 武汉凌云光电科技有限责任公司 | Fiber coupled laser, fiber coupled laser system and its optimization method |
| CN206806731U (en) * | 2017-05-26 | 2017-12-26 | 西安卓镭激光技术有限公司 | A kind of high power semi-conductor bar bar laser shaper |
| US10003168B1 (en) * | 2017-10-18 | 2018-06-19 | Luminar Technologies, Inc. | Fiber laser with free-space components |
| CN109164668A (en) * | 2018-09-30 | 2019-01-08 | 青岛海信激光显示股份有限公司 | A kind of laser light source and laser projection system |
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| CN112445005B (en) | 2023-08-11 |
| CN112445005A (en) | 2021-03-05 |
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