CN217153889U

CN217153889U - Compact white light laser light source

Info

Publication number: CN217153889U
Application number: CN202220241456.7U
Authority: CN
Inventors: 袁泉珂; 成华
Original assignee: Qingdao Zhongke Xincheng Lighting Technology Co ltd
Current assignee: Qingdao Zhongke Xincheng Lighting Technology Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2022-08-09
Anticipated expiration: 2032-01-29

Abstract

The utility model discloses a compact white light laser light source belongs to fluorescence laser technical field, and it includes the laser module and closes light unit and white light-emitting unit along reflection unit, white light that laser beam propagation path arranged in proper order, white light closes the light unit and includes scattering piece, white light lens and the fluorescence wheel that arranges in proper order along laser beam propagation path, the reflection unit includes big reflecting prism and the little reflecting prism that arranges in proper order along laser beam propagation path, little reflecting prism is located the central point of white light-emitting unit puts. The utility model discloses well adoption puts at the central point of white light-emitting unit and sets up little reflection prism to along the mode of scattering piece, white light lens and the fluorescence wheel that laser beam propagation path arranged in proper order, optimized the light path, removed dichroscope in the former scheme, adjusted partial lens, shortened whole light path stroke, make whole light source system volume littleer.

Description

Compact white light laser light source

Technical Field

The utility model relates to a fluorescence laser technical field especially relates to a compact white light laser light source.

Background

The fluorescent wheel is widely applied to the industries of laser display, fluorescent laser light source and the like, and skillfully solves the light saturation and heat saturation phenomena of fluorescent materials, so that the fluorescent laser technology is greatly developed; the traditional fluorescent sheet has a saturation phenomenon, the irradiation power has an upper limit value, and only the design of a light source with low power can be realized. The fluorescent wheel is adopted as a yellow light excitation component in the prior art, the saturation phenomenon of a fluorescent sheet is solved, and the design of a high-power light source can be realized, for example, a blue light laser beam can be emitted by a laser module in a white light laser source with the application number of 202011137072.2, the laser beam irradiates a direct module reflector through a direct module large lens and a direct module small lens, the light beam is reflected by a radiation mirror and irradiates a dichroscope after passing through a scattering sheet, a blue light small lens barrel is arranged on the left side of the dichroscope, a yellow light small lens barrel is arranged below the dichroscope, the laser beam irradiates a blue light small lens barrel through one part of the dichroscope, the blue light ceramic sheet in a ceramic cover is irradiated through the focusing of the blue light small lens barrel, and the blue light ceramic sheet is reflected to the dichroscope. The other part of the light is reflected to the small yellow lens cone by the two-phase mirror, is focused to irradiate the fluorescent wheel through the small yellow lens cone, reflects the yellow light to the two-phase mirror, and synthesizes the yellow light and the blue light into white light to irradiate the light outlet lens;

however, the dichroic mirror is adopted in the above technical solution, so that the overall volume of the light source is large, and the production cost and the luminous efficiency are low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide one kind based on do not adopt the compact white light laser light source of the small technical purpose of light source system on the basis of dichroscope.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a compact white light laser light source, including laser module and the reflection unit, white light that arrange in proper order along laser beam propagation path close optical unit and white light-emitting unit, white light closes optical unit and includes scattering piece, white light lens and the fluorescence wheel that arranges in proper order along laser beam propagation path, the reflection unit includes big reflecting prism and the little reflecting prism that arranges in proper order along laser beam propagation path, little reflecting prism is located the central point of white light-emitting unit puts.

Preferably, the fluorescent wheel is installed in a shell, a plurality of heat absorption cylinders are arranged in the shell, the heat absorption cylinders are located below the fluorescent wheel, and heat dissipation fins are arranged outside the shell.

Preferably, the fluorescent wheel is arranged on a fluorescent wheel mounting plate, and the fluorescent wheel mounting plate is connected with the shell through bolts; the scattering sheet and the white light lens are both arranged on a white light lens barrel, and the white light lens barrel is in threaded connection with the fluorescent wheel mounting plate.

Preferably, a heating device and a temperature control probe are arranged in the fluorescent wheel mounting plate, and both the heating device and the temperature control probe are electrically connected with a temperature controller.

Preferably, the white light lens is made of quartz.

Preferably, a focusing module is arranged between the laser module and the reflection unit, and the focusing module comprises a focusing lens.

Preferably, the casing includes the body and sets up upper cover plate and radiating bottom plate on both sides about the body, big reflection prism, white light-emitting unit and focusing lens all set up on the upper cover plate.

Preferably, the white light emitting unit faces the white light combining unit, and the white light emitting unit includes a sealing lens and a light outlet lens.

The utility model discloses following beneficial effect has been gained for prior art:

1. the utility model provides an adopt among the compact white light laser light source to set up little reflection prism at the central point of white light-emitting unit to along the mode of scattering piece, white light lens and the fluorescence wheel that laser beam propagation path arranged in proper order, optimized the light path, removed dichroscope in the former scheme, adjusted partial lens, shortened whole light path stroke, make whole light source system volume littleer.

2. The utility model provides an inside of casing is equipped with neatly arranged's little cylinder of heat absorption among the compact white light laser light source for absorb fluorescence wheel during operation, give off the heat in the air on every side through high-speed rotation, then through the outside radiating fin of casing and supporting radiator fan, give off the absorbed heat fast in all light source outside air.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of the overall structure of a compact white laser light source;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the housing of FIG. 1 with the housing removed;

the device comprises a heat dissipation bottom plate 1, a laser module 2, a focusing lens 3, a large reflecting prism 4, a small reflecting prism 5, a scattering sheet 6, a white light lens 7, a fluorescent wheel 8, an upper cover plate 9, a shell 10, a heating device 11, a temperature control probe 12, a sealing lens 13, a light outlet lens 14, a white light lens barrel 15, a fluorescent wheel mounting plate 16, a heat dissipation fin 17 and a heat absorption cylinder 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-3, the utility model provides a compact white light laser light source, including laser module 2 and the reflection unit who arranges in proper order along laser beam propagation path, white light closes optical unit and white light-emitting unit, white light closes optical unit and includes the scattering piece 6 that arranges in proper order along laser beam propagation path, white light lens 7 and fluorescent wheel 8, the reflection unit includes big reflecting prism 4 and little reflecting prism 5 that arrange in proper order along laser beam propagation path, little reflecting prism 5 is located the central point of white light-emitting unit and puts. The axes of the white light combining unit and the white light emitting unit are parallel to the laser emitted by the laser module 2; the working process is as follows: the laser module 2 emits a blue laser beam, the laser beam passes through the two reflecting prisms and then irradiates a white light lens 7 through a scattering sheet 6, the laser beam is focused and irradiates a fluorescent wheel 8 through the white light lens 7, and the reflected white light irradiates a white light emitting unit; the light path is optimized by arranging the small reflection prism 5 at the center of the white light emitting unit and arranging the scattering sheet 6, the white light lens 7 and the fluorescent wheel 8 in sequence along the propagation path of the laser beam, the dichroscope in the original scheme is removed, part of the lenses are adjusted, the whole light path stroke is shortened, and the whole light source system is smaller in volume.

As a specific embodiment, the fluorescent wheel 8 is installed in the casing 10, and the inside of the casing 10 is provided with a plurality of heat absorbing cylinders 18, the heat absorbing cylinders 18 are located below the fluorescent wheel 8, and the outside of the casing 10 is provided with heat dissipating fins 17; wherein, the heat absorbing cylinder 18 is positioned on the inner wall surface of the shell 10 and is vertical to the fluorescent wheel 8; the heat absorbing cylinder 18 is used for absorbing heat emitted to the surrounding air by rotation when the fluorescent wheel 8 is in operation, and then rapidly emitting the absorbed heat to the air outside the light source through the heat radiating fins 17 and the matched heat radiating fan outside the casing 10.

In a specific embodiment, the fluorescent wheel 8 and the fluorescent wheel mounting plate 16 are arranged on the casing 10, the fluorescent wheel mounting plate 16 is connected with the casing 10 through bolts, and the fluorescent wheel 8 and the fluorescent wheel mounting plate 16 can generate relative rotation.

In a specific embodiment, the diffuser and the white light lens 7 are both arranged on a white light lens barrel 15, and the white light lens barrel 15 is in threaded connection with the fluorescent wheel mounting plate 16; since the distance between the white light lens 7 in the white light barrel 15 and the fluorescent surface of the fluorescent wheel 8 has strict requirements, the distance between the white light lens 7 and the fluorescent surface of the fluorescent wheel 8 can be adjusted by rotating the white light barrel 15 to adjust the axial position of the white light barrel in the mounting hole of the fluorescent wheel mounting plate 16.

In a specific embodiment, the fluorescent wheel mounting plate 16 is provided with a heating device 11 and a temperature control probe 12, and both the heating device 11 and the temperature control probe 12 are electrically connected with a temperature controller. The fluorescent wheel 8 is heated by pre-starting the heating device 11, heat is conducted to the fluorescent wheel 8, the fluorescent wheel 8 is heated, and the problem that the fluorescent wheel 8 cannot be started at a low temperature can be solved. The temperature control probe 12 can detect the temperature of the fluorescent wheel mounting plate 16, and the heating device 11 and the temperature control probe 12 can be externally connected to a temperature controller to control the starting and stopping of the heating device 11.

In one embodiment, the white lens 7 is made of quartz.

As a specific implementation manner, a focusing module is arranged between the laser module 2 and the reflection unit, and the focusing module comprises a focusing lens 3 to ensure that laser emitted by the laser module 2 can be accurately projected onto the reflection prism; wherein, the focusing lens is fixed at the corresponding position of the upper cover through glue, and the light path position is adjusted by adjusting the front, back, left and right of the focusing lens 3 through a special clamp during installation.

As a specific embodiment, the housing 10 includes a body, and an upper cover plate 9 and a heat dissipation bottom plate 1 disposed on the upper and lower sides of the body, and the large reflection prism 4, the white light emitting unit, and the focusing lens 3 are disposed on the upper cover plate 9. The heat dissipation bottom plate 1 is made of metal material with good heat dissipation performance and can play a role in heat dissipation; the connection of the screw thread and the bolt is the preferable technical scheme, other existing connection modes can be adopted, and the screw thread and the bolt only have the functions of position adjustment and fixation; the large reflecting prism 4 is fixed above the focusing lens 3 by glue, and the small reflecting prism 5 is fixed on a sealing lens 13 which is arranged on the upper cover plate 9 by the glue through a special limiting tool.

In a specific embodiment, the white light emitting unit faces the white light combining unit, and the white light emitting unit includes a sealing lens 13 and a light outlet lens 14.

Based on all the components, the light-emitting principle is as follows:

the laser module 2 can emit a blue laser beam, the laser beam passes through the focusing lens 3, passes through the two reflecting prisms, and then passes through the scattering sheet 6 to irradiate the white light lens barrel 15, the white light lens 7 is fixed in the white light lens barrel 15, the laser beam white light lens 7 focuses and irradiates the fluorescent wheel 8, and the reflected white light irradiates the light outlet lens 14.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The compact white light laser light source is characterized by comprising a laser module, a reflection unit, a white light combination unit and a white light emitting unit, wherein the reflection unit, the white light combination unit and the white light emitting unit are sequentially arranged along a laser beam propagation path, the white light combination unit comprises a scattering sheet, a white light lens and a fluorescent wheel which are sequentially arranged along the laser beam propagation path, the reflection unit comprises a large reflection prism and a small reflection prism which are sequentially arranged along the laser beam propagation path, and the small reflection prism is located at the center of the white light emitting unit.

2. The compact white laser light source of claim 1, wherein the fluorescent wheel is mounted in a housing, and the housing has heat absorbing cylinders inside, the heat absorbing cylinders are located under the fluorescent wheel, and the housing has heat dissipating fins outside.

3. The compact white laser light source of claim 2, wherein the luminescent wheel is attached to a luminescent wheel mounting plate, the luminescent wheel mounting plate being attached to the housing by bolts; the scattering sheet and the white light lens are both arranged on a white light lens barrel, and the white light lens barrel is in threaded connection with the fluorescent wheel mounting plate.

4. The compact white light laser light source of claim 3, wherein the fluorescent wheel mounting plate is provided therein with a heating device and a temperature control probe, and the heating device and the temperature control probe are electrically connected with a temperature controller.

5. The compact white laser light source of claim 1, wherein the white lens is made of quartz.

6. The compact white laser light source of claim 2 or 3, wherein a focusing module is arranged between the laser module and the reflection unit, and the focusing module comprises a focusing lens.

7. The compact white light laser light source of claim 6, wherein the housing comprises a body, and an upper cover plate and a heat dissipation bottom plate disposed on the upper and lower sides of the body, and the large reflection prism, the white light emitting unit and the focusing lens are disposed on the upper cover plate.

8. The compact white light laser light source of claim 7, wherein the white light emitting unit faces the white light combining unit, and the white light emitting unit comprises a sealing lens and a light outlet lens.