CN212987113U

CN212987113U - High-brightness lighting device

Info

Publication number: CN212987113U
Application number: CN202120424859.0U
Authority: CN
Inventors: 杨毅
Original assignee: Weifang Blue Arc Photoelectric Technology Co ltd
Current assignee: Weifang Blue Arc Photoelectric Technology Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-04-16
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a high brightness lighting device, laser light source sends laser, laser orientation divides the light receiving face outgoing of light splitting and combining the slide, the light splitting closes the slide and divide into first light and second light with laser, first light is closed the light splitting and is closed the reflection of slide and reachs first wavelength conversion device, first wavelength conversion device stimulated sends first laser, second light reachs second wavelength conversion device behind the light splitting and combining the slide, second wavelength conversion device stimulated sends the second laser, first laser and second laser meet formation emergent light, emergent light optical axis and laser optical axis place plane are perpendicular with light splitting and combining the slide, contained angle between laser optical axis and the light splitting and combining the slide isa，

. Because the beam splitting and combining optical sheet and the laser optical axis form an included angle, the laser is split into two beams by the beam splitting and combining optical sheet, the two beams of light excite different wavelength conversion devices to emit received laser, and the two wavelength conversion devices fully convert the laser so as to greatly reduce the proportion of laser stray light in emergent light.

Description

High-brightness lighting device

Technical Field

The utility model relates to the field of lighting technology, specifically speaking relates to a high brightness lighting device.

Background

The LED light-emitting chip is used for exciting the fluorescent material to emit light for illumination, decoration and projection, so that the traditional lamps such as tungsten filament lamps, xenon lamps and the like are slowly replaced, and the LED light source has the advantages of high brightness, long service life and the like.

Compared with an LED chip, the light emitted by exciting the fluorescent material by using the laser has the advantages of higher brightness, longer service life, better directivity, lower energy consumption and the like, and is a solution of a next generation high-brightness light source acknowledged in the field of illumination.

However, when laser illumination is used, there is a possibility that stray laser light is emitted from the illumination light. The existence of laser in the emergent light often is the problem that the laser is not fully utilized, and the safety performance of the emergent light is greatly reduced due to the emergence of laser stray light.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of above-mentioned conventional art, the utility model provides a can reduce the high brightness lighting device of the miscellaneous light of laser.

In order to solve the above problems, the utility model adopts the following technical scheme: the laser device comprises at least one laser light source and a light splitting and combining sheet, wherein a light receiving surface is arranged on one side of the light splitting and combining sheet facing the laser light source, the laser light is emitted towards the light receiving surface, the light splitting and combining sheet divides the laser light into first light and second light, the first light is reflected and emitted by the light splitting and combining sheet, and the second light is emitted after passing through the light splitting and combining sheet; the first light is reflected by the light splitting and combining sheet and then reaches the first wavelength conversion device, and the first wavelength conversion device is excited to emit first stimulated light; the laser light source is arranged on the other side of the light receiving surface of the light splitting and combining sheet, the second wavelength conversion device is opposite to the laser light source, the second light passes through the light splitting and combining sheet and then reaches the second wavelength conversion device, the second wavelength conversion device is excited to emit second received laser, the first received laser and the second received laser are combined to form emergent light, the plane where the optical axis of the emergent light and the optical axis of the laser are located is perpendicular to the light splitting and combining sheet, the included angle between the optical axis of the laser and the light splitting and combining sheet is a, and a is more than or equal to 15 degrees and less than or equal to 75 degrees.

As an improvement of the technical scheme: the laser light source is arranged at one end of the shell, the second wavelength conversion device is arranged at one end of the shell, which corresponds to the laser light source, a light outlet is formed in the side wall of the shell, the first wavelength conversion device is arranged on the side wall of the shell and is opposite to the light outlet, and the light receiving surface extends from one side, which is close to the first wavelength conversion device, of the second wavelength conversion device to one side, which is close to the light outlet, of the laser light source.

As an improvement of the technical scheme: the light splitting and combining device comprises a shell, a first wavelength conversion device and a first lens group, and is characterized by further comprising a first fixing table located between the shell and the first wavelength conversion device, the first fixing table is connected with the shell, one end, facing the light splitting and combining sheet, of the first fixing table is sunken towards the other end to form a first groove, the first wavelength conversion device is arranged in the first groove, the first lens group is located between the first wavelength conversion device and the light splitting and combining sheet, and the first lens group covers the first groove.

As an improvement of the technical scheme: the light splitting and light combining device comprises a shell, a first fixing platform, a first lens group and a second lens group, wherein the shell is provided with a light splitting and light combining sheet, the first fixing platform is positioned between the shell and the first wavelength conversion device, the second fixing platform is connected with the shell, one end of the first fixing platform, facing the light splitting and light combining sheet, is sunken towards the other end to form a first groove, the first wavelength conversion device is arranged in the first groove, the second lens group is positioned between the first wavelength conversion device and the light splitting and light combining sheet, and the first lens group covers the first groove.

As an improvement of the technical scheme: the beam converging lens is positioned between the light splitting and combining sheet and the laser light source.

As an improvement of the technical scheme: the beam-converging lens is characterized by further comprising a fixing device arranged around the beam-converging lens, and the fixing device is connected with the shell.

As an improvement of the technical scheme: the laser light source comprises a first laser light source, a second laser light source and a third laser light source, the beam converging lens is located between the first laser light source and the light splitting and combining sheet, the second laser light source is located on one side of the first laser light source, and the third laser light source is located on the other side of the first laser light source.

As an improvement of the technical scheme: the first light path twisting device is connected with the fixing device and comprises a first light inlet area and a first light outlet area, the first light inlet area receives laser from the second laser light source, and the first light outlet area is aligned with the beam collecting lens.

As an improvement of the technical scheme: the second light path twisting device is connected with the fixing device and comprises a second light inlet area and a second light outlet area, the second light inlet area receives laser from a third laser light source, and the second light outlet area is aligned with the beam collecting lens.

As an improvement of the technical scheme: the LED lamp further comprises a glass sheet, and the glass sheet covers the light outlet.

Due to the adoption of the technical scheme, compared with the prior art, the utility model discloses in because the existence of beam splitting and light combining piece, the laser that laser source sent is divided into two parts, and most of laser is arrived first wavelength conversion device by beam splitting and light combining piece after being reflected by beam splitting and light combining piece, makes wavelength conversion device send first laser, and laser passes beam splitting and light combining piece and goes out; and a small part of laser passes through the beam splitting and combining sheet to reach the second wavelength conversion device, so that the second wavelength conversion device emits second received laser, the second received laser is reflected and emitted by the beam splitting and combining sheet, and finally the first received laser and the second received laser are mixed into a beam of light to be emitted. The laser is filtered for many times through the light splitting sheet, so that the proportion of laser stray light in the emergent light is greatly reduced, the laser is divided into two parts, each part of the laser is converted into the received laser to be emitted, and the utilization rate of the laser is increased.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a schematic structural view of a lighting device.

Fig. 2 is a laser light path diagram.

Fig. 3 is a schematic structural view of the first fixing table.

Fig. 4 is a schematic structural diagram of another lighting device.

Detailed Description

Example 1:

based on the problem that the illumination light of outgoing often can be accompanied with the laser parasitic light outgoing among the current laser illumination field, this patent provides a novel technical scheme with regard to above problem. A high-brightness lighting device comprises at least one laser light source 111, wherein the laser light source 111 emits laser light 121, the high-brightness lighting device further comprises a light splitting and combining sheet 101, a light receiving surface 101a is arranged on one side, facing the laser light source 111, of the light splitting and combining sheet 101, the laser light 121 emits towards the light receiving surface 101a, the light splitting and combining sheet 101 divides the laser light 121 into first light 121a and second light 121b, the first light 121a is reflected and emitted by the light splitting and combining sheet 101, and the second light 121b passes through the light splitting and combining sheet 101 and then emits; the first wavelength conversion device 112 is positioned on one side of the light receiving surface 101a of the light splitting and combining sheet 101, the first light 121a is reflected by the light splitting and combining sheet 101 and then reaches the first wavelength conversion device 112, and the first wavelength conversion device 112 is excited to emit first stimulated light 122; the laser light splitting and combining device further comprises a second wavelength conversion device 113 located on the other side of the light receiving surface 101a of the light splitting and combining sheet 101, the second wavelength conversion device 113 is arranged opposite to the laser light source 111, second light 121b passes through the light splitting and combining sheet 101 and then reaches the second wavelength conversion device 113, the second wavelength conversion device 113 is excited to emit second received laser light 123, the first received laser light 122 and the second received laser light 123 are combined to form emergent light 124, the plane where the optical axis of the emergent light 124 and the optical axis of the laser light 121 are located is perpendicular to the light splitting and combining sheet 101, the included angle between the optical axis of the laser light 121 and the light splitting and combining sheet 101 is a, and a is larger than or equal to 15 degrees and smaller than or equal to. In this embodiment, the light splitting and combining sheet 101 may be a polarizing sheet that partially transmits light and partially reflects light. For example, the color of the laser light 121 emitted by the laser light source 111 is blue, and the light splitting/combining sheet 101, i.e., the polarizer, can transmit 10% and reflect 90% of the blue light, so that the laser light 121 is split into the first light 121a to be reflected by the light splitting/combining sheet 101 and the second light 121b to be transmitted through the light splitting/combining sheet 101. In this embodiment, the proportion of the first light 121a to the laser light 121 needs to be much larger than the proportion of the second light 121b to the laser light 121, so as to ensure that the laser stray light contained in the emergent light 124 is minimized. The first light 121a is reflected by the light splitting and combining sheet 101 and reaches the first wavelength conversion device 112, and the first wavelength conversion device 112 is excited to emit the first excited light 122. The second light 121b passes through the light splitting and combining sheet 101 and then reaches the second wavelength conversion device 113, and the second wavelength conversion device 113 is excited to emit the second stimulated light 123. In order to facilitate the emission of the excited light, the first wavelength conversion device 112 and the second wavelength conversion device 113 are preferably reflective wavelength conversion devices, i.e., the excited light enters from one side of the wavelength conversion device, and the excited light emitted from the wavelength conversion device is emitted from the side where the excited light enters.

For the convenience of describing the operation principle of the present embodiment in detail, in the present embodiment, the laser 121 emitted by the laser light source 111 is blue, the light splitting/combining sheet 101 is a polarizing sheet capable of transmitting 10% of blue light and reflecting 90%, the first wavelength conversion device 112 emits yellow stimulated light, i.e., the first stimulated light 122, and the second wavelength conversion device 113 emits white stimulated light, i.e., the second stimulated light 123. The surface of the light splitting/combining sheet 101 facing the laser light source 111 is a light receiving surface 101a, and the light receiving surface 101a is used for receiving the laser light 121 from the laser light source 111. The laser beam 121 is split into a first beam 121a and a second beam 121b by the light splitting and combining sheet 101. The first wavelength conversion device 112 is disposed on the side of the light receiving surface 101a, so that the first wavelength conversion device 112 can receive the first light 121a reflected and emitted by the light splitting and combining sheet 101. The first wavelength conversion device 112 converts the received first light 121a into the first stimulated light 122, but due to the limited conversion capability of the first wavelength conversion device 112, the first light 121a will be partially unconverted and emitted together with the first stimulated light 122. The first light receiving diode 122 and a part of the unconverted first light 121a are emitted toward the light splitting and combining sheet 101, since the light splitting and combining sheet 101 reflects most of the blue light, and the first light receiving diode 122 emitted by the first wavelength conversion device 112 is yellow, the first light receiving diode 122 will pass through the light splitting and combining sheet 101 to be emitted, and the part of the first light 121a which is not converted and emitted will be reflected again by the light splitting and combining sheet 101, so that the content of the laser stray light in the emitted light 124 is greatly reduced. The second wavelength conversion device 113 is disposed opposite to the laser light source 111, so that the part of the laser light 121 that can pass through the light splitting sheet 101, i.e., the second light 121b, reaches the second wavelength conversion device 113. The second wavelength conversion device 113 converts the received second light 121b into white stimulated light, i.e., a second stimulated light 123. However, since there is a part of the unconverted second light 121b, the second stimulated light 123 emitted from the second wavelength conversion device 113 also includes blue laser stray light, so that the second stimulated light 123 is blue light. The first yellow light-receiving laser 122 passes through the light splitting and combining sheet 101 to be emitted, the second blue light-receiving laser 123 is reflected by the light splitting and combining sheet 101 to be emitted, the first light-receiving laser 122 and the second light-receiving laser 123 are combined and emitted together to form the emitting light 124, and according to optical knowledge, the blue light and the yellow light are mixed to form white light, so that the emitting light 124 is white light. The laser 121 is converted by the first wavelength conversion device 112 and the second wavelength conversion device 113 respectively, so that the laser 121 can be fully utilized, and the brightness of the emergent light 124 is improved; the light splitting and combining sheet 101 filters the laser 121, so that the proportion of the laser contained in the emergent light 124 is extremely low, and the safety of the emergent light 124 is higher. Of course, the colors of the received laser light emitted by the first wavelength conversion device 112 and the second wavelength conversion device 113 mentioned in the present embodiment can be adjusted according to the need, and the proportion of the reflected light transmitted by the light splitting and combining sheet 101 can also be selected. The second wavelength conversion device 113 may also be a scattering sheet with scattering and reflecting functions, but this enables the second light 121b to be directly emitted without being converted, so that the content of the laser stray light in the emitted light 124 is slightly higher.

In this embodiment, the angular relationship between the beam splitting/combining sheet 101 and the optical axis of the laser beam 121 is very important. If the optical axis of the laser beam 121 is perpendicular to the light splitting and combining sheet 101, it can be known from optical knowledge that the first light 121a of the laser beam 121 is reflected toward the source of the laser beam 121, and therefore the first light 121a cannot be received by the first wavelength conversion device 112, which greatly wastes the optical energy. On the other hand, if the optical axis of the light splitting and combining sheet 101 is parallel to the optical axis of the laser light 121, the light splitting and combining sheet 101 is difficult to receive the laser light 121, and the light splitting and combining function cannot be completed, so the optical axis of the laser light 121 cannot be parallel to the light splitting and combining sheet 101. After multiple demonstrations, it is found that if a plane formed by the optical axis of the laser 121 and the optical axis of the emergent light 124 is perpendicular to the light splitting and combining sheet 101, and an included angle between the optical axis of the laser 121 and the light splitting and combining sheet 101 is a, the light splitting and combining sheet 101 can better realize the function of splitting the laser 121 into the first light 121a and the second light 121b only when a is greater than or equal to 15 degrees and less than or equal to 75 degrees. However, the light splitting and combining sheet 101 has not only a light splitting function but also a light combining function. If the light splitting and combining sheet 101 cannot effectively combine the first received laser light 122 and the second received laser light 123, the emergent light 124 may form two emergent light spots with different colors, and the emergent light 124 may form an emergent light spot with uneven color distribution, so we must enable the light splitting and combining sheet 101 to effectively combine the first received laser light 122 and the second received laser light 123. After further in-depth demonstration, we found that when a =45 °, the first light 121a can be effectively received by the first wavelength conversion device 112, and the second light 121b can be effectively received by the second wavelength conversion device 113; and the first received laser light 122 is emitted after passing through the light splitting and combining sheet 101, and the second received laser light 123 is emitted after being reflected by the light splitting and combining sheet 101, when a =45 °, the first received laser light 122 and the second received laser light 123 can be completely merged together, that is, the optical axis of the first received laser light 122 and the optical axis of the second received laser light 123 are completely overlapped, and finally the emitted light 124 forms a light spot with a single color.

After finding the proper position between the elements, we need to position and protect the elements, so it is preferable that the device further includes a housing 102 disposed around the light splitting and combining sheet, the laser light source 111 is disposed at one end of the housing 102, the second wavelength conversion device 113 is disposed at an end of the housing 102 corresponding to the laser light source 111, a side wall of the housing 102 is provided with a light outlet 102a, the first wavelength conversion device 112 is disposed at a side wall of the housing and opposite to the light outlet 102a, and the light receiving surface 101a extends from a side of the second wavelength conversion device 113 close to the first wavelength conversion device 112 to a side of the laser light source 111 close to the light outlet 102 a. In order to ensure that the second light 121b of the laser light 121 emitted by the laser light source 111 can be directly incident into the second wavelength conversion device 113, the laser light source 111 and the second wavelength conversion device 113 are disposed at two opposite ends of the housing 102. In the present embodiment, the laser source 111 and the second wavelength conversion device 113 are used as main description ends, and other ends of the housing can be understood as sidewalls, but other ends can also be used as main description ends, which is not limited herein. In order to facilitate the exit of the exit light 124, a light exit port 102a is required on the side wall of the housing 102. Since the first received laser light 122 directly exits after passing through the light splitting and combining sheet 101, in order to ensure the shortest optical path, the first wavelength conversion device 112 is disposed opposite to the light exit 102a and is located on the side wall of the housing 102. In order to ensure that the optical axis angle a =45 ° between the light splitting and combining sheet 101 and the laser light 121, and the light splitting and combining sheet 101 can effectively split the laser light 121, and can effectively combine the first received laser light 122 and the second received laser light 123, the light receiving surface 101a of the light splitting and combining sheet 101 extends from the side of the second wavelength conversion device 113 close to the first wavelength conversion device 112 to the side of the laser light source 111 close to the light outlet 102 a.

Since the excited light emitted by the wavelength conversion device randomly exits to the periphery, it can be understood that the wavelength conversion device acts as a lambertian illuminant when emitting light. If the received laser light randomly emitted to the periphery cannot be collected and utilized, the received laser light cannot be emitted to a great extent, and the waste of light energy is caused. Therefore, preferably, the optical splitter further comprises a first fixing stage 103 located between the housing 102 and the first wavelength conversion device 112, the first fixing stage 103 is connected to the housing 102, one end of the first fixing stage 103 facing the light splitting and combining sheet 101 is recessed towards the other end to form a first groove, the first wavelength conversion device 112 is disposed at the bottom of the first groove, and the optical splitter further comprises a first lens group 104, the first lens group 104 is located between the first wavelength conversion device 112 and the light splitting and combining sheet 101, and the first lens group 104 covers the first groove. In order to better fix the first wavelength conversion device 112, the first fixing stage 103 is introduced, and one end of the first fixing stage 103 facing the light splitting and combining sheet 101 is recessed towards the other end to form a first groove, and the first wavelength conversion device 112 is fixed at the bottom of the first groove, so that the first wavelength conversion device 112 has better protection and the first wavelength conversion device 112 is prevented from being displaced due to external force. The wavelength conversion device generates a large amount of heat when the excitation light is converted to generate the excitation light, and the accumulation of the heat may cause damage to the wavelength conversion device. The existence of the first fixing stage 103 also increases the heat dissipation area of the first wavelength conversion device 112, thereby increasing the heat dissipation speed. In order to make the first stimulated light 122 emit as much as possible, the first lens group 104 is introduced. From optical knowledge, the convex lens can converge the divergent light, i.e. twist the large-angle light into the small-angle light. First lens group 104 is preferably a convex lens. The optical knowledge shows that the convex lens has a focus, and the light converging capability of the convex lens to light can be optimal only when the light emitting point is coincident with the focus; when the light-emitting point is positioned between the focal point and the convex lens, the closer the light-emitting point is to the convex lens, the weaker the beam-converging capability of the convex lens to the light is. Therefore, a certain distance is necessary between the first wavelength conversion device 112 and the convex lens. However, the volume inside the housing 102 is limited, which results in that the first wavelength conversion device 112 cannot be located at the focal point of the convex lens, and the beam-receiving capability of the convex lens for the first stimulated light 122 is limited. Therefore, preferably, the first lens group 104 includes two convex lenses, and by using the two convex lenses in a stacked manner, a part of the first received laser light 122 which cannot be emitted due to an excessively large angle is converted into the first received laser light 122 with a small angle which can be emitted, so that the utilization rate of light energy is increased, and the waste of light energy is avoided. Similarly, in order to reduce the light loss of the second received laser light 123 emitted from the second wavelength conversion device 113, in a preferred embodiment, the optical transceiver further includes a second fixing stage 105 located between the housing 102 and the second wavelength conversion device 113, the second fixing stage 105 is connected to the housing 102, one end of the second fixing stage 105 facing the light splitting and combining sheet 101 is recessed towards the other end to form a second groove, the second wavelength conversion device 113 is disposed in the second groove, the optical transceiver further includes a second lens group 106, the second lens group 106 is located between the second wavelength conversion device 113 and the light splitting and combining sheet 101, and the second lens group 106 covers the second groove. Similarly, a fixing stage, i.e., the second fixing stage 105, is selected for fixing and heat dissipation, a lens group, i.e., the second lens group 106, is also selected for converging light, and the second lens group 106 is also two convex lenses. By using the first lens group 104 and the second lens group 106 together, the utilization rates of the first received laser light 122 and the second received laser light 123 are effectively increased, and the waste of light energy is reduced.

The laser 121 emitted from the laser source 111 forms an elongated spot due to the existence of a fast axis and a slow axis of the laser 121, and the angle of the laser 121 in the fast axis direction is larger than the angle of the laser 121 in the slow axis direction. However, a long spot is not desirable, and a circular spot is desirable. Therefore, it is preferable that a beam converging lens 107 is further included, and the beam converging lens 107 is located between the light splitting and combining sheet 101 and the laser light source 111. The converging lens 107 used in the scheme is also a convex lens, and the fast axis direction of the laser 121 is converged by utilizing the characteristic of converging the light by the convex lens, while the slow axis direction of the laser 121 is not changed, so that a light spot formed after the laser 121 passes through the converging lens 107 is a circular light spot. In order to prevent the converging lens 107 from being displaced, it is preferable that a fixing device 108 is further included, which is disposed around the converging lens 107, and the fixing device 108 is connected to the housing 102. The fixing device 108 is selected to fix the converging lens 107, and in order to avoid the fixing device 108 blocking the laser beam 121, the fixing device 108 needs to be arranged around the circumference of the converging lens 107.

In summary, in the embodiment, in order to reduce the laser stray light in the emergent light 124, the light splitting and combining sheet 101 is selected to split the laser light into the first light 121a and the second light 121b, then the first wavelength conversion device 112 converts the first light 121a into the first light receiving beam 122 for emission, and when the first light receiving beam 122 passes through the light splitting and combining sheet 101, the first light 121a which is not converted in the first light receiving beam 122 is reflected by the light splitting and combining sheet 101 and cannot be emitted; the second light 121b is converted into a second light receiving beam 123 by the second wavelength conversion device 113, the second light receiving beam 123 is emitted toward the light splitting and combining sheet 101, and finally the first light receiving beam 122 and the second light receiving beam 123 are combined into an emitting beam 124 to be emitted. In this embodiment, since the reflectivity of the light splitting and combining sheet 101 to the laser 121 is much greater than the transmittance,so that the proportion of laser stray light in the emergent light 124 is greatly reduced. And the laser 121 is converted by the two wavelength conversion devices, so that the laser 121 can be sufficiently converted into the received laser, the utilization rate of the laser 121 is increased, and the brightness of the emergent light 124 is higher. The most important point is that the plane where the optical axis of the emergent light 124 and the optical axis of the laser 121 are located is perpendicular to the light splitting and combining sheet 101, the included angle between the optical axis of the laser 121 and the light splitting and combining sheet 101 is a,

therefore, the light splitting and combining sheet 101 can be ensured to effectively split the laser light 121 into the first light 121a and the second light 121b, and the first received laser light 122 and the second received laser light 123 can be efficiently combined into the outgoing light 124.

Example 2:

in embodiment 1, the emission power of the laser light source 111 is limited. Therefore, in order to obtain more bright light, in a preferred embodiment, there are three laser light sources 211, the three laser light sources 211 all emit laser light 221 toward the light splitting and combining sheet 201, the three laser diodes are a first laser light source 211a, a second laser light source 211b and a third laser light source 211c, the beam converging lens 207 is located between the first laser light source 211a and the light splitting and combining sheet 201, the second laser light source 211b is located on one side of the first laser light source 211a, and the third laser light source 211c is located on the other side of the first laser light source 211 a. In the case where the power of the laser diode is limited, in order to obtain the outgoing light 224 with higher luminance, we choose to increase the number of light sources so that the luminance of the outgoing light 224 is increased. In order to make the light emitted from all three laser light sources 211 parallel, the second laser light source 211b is located on one side of the first laser light source 211a, and the third laser light source 211c is located on the other side of the first laser light source 211 a. Although the number of light sources is increased to improve the brightness of the emergent light 224, if the laser light emitted from the light sources cannot be irradiated or only a small part of the laser light can reach the wavelength conversion device, the light energy is inevitably wasted. Therefore, in a preferred embodiment, the optical path twisting device 209a is connected to the fixing device 208, and the first optical path twisting device 209a includes a first light-entering region aligned with the light-emitting region of the second laser light source 211b and a first light-exiting region aligned with the beam-collecting lens 207. The first optical path twisting device 209a is internally composed of a reflecting mirror, and can reflect the laser light 225 from the second laser light source 211b for multiple times and emit the laser light 225 toward the converging lens 207, and further the laser light 225 can pass through the converging lens 207 and emit the laser light. After the laser 225 is converged by the converging lens 207, the laser 225 finally forms an approximately circular light spot, so that the light spot formed by the light emitted from the device is also approximately circular. Similarly, the optical path twisting device 209b is connected to the fixing device 208, and the optical path twisting device 209b includes a second light inlet region and a second light outlet region, the second light inlet region receives the laser light 226 from the third laser light source 211c, and the second light outlet region is aligned with the beam collecting lens 207. The second optical path twisting device 209b is also internally composed of a mirror, and guides the laser beam 226 from the third laser light source 211c to the converging lens 207. The laser light 216 is also converged by the converging lens 207, and thus the laser light 226 also forms an approximately circular spot.

In summary, in order to increase the overall brightness of the emergent light, three laser light sources are selected as the excitation light sources; to prevent the waste of laser light energy, the first optical path twisting device 209a and the second optical path twisting device 209b are selected to guide the laser light 225 emitted from the second laser light source 211b and the laser light 226 emitted from the third laser light source 211 c.

The present invention is not limited to the embodiments described above, but the embodiments are only preferred embodiments of the present invention and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should fall within the patent coverage of the present invention.

Claims

1. A high brightness illumination device comprising at least one laser light source, said laser light source emitting laser light, characterized in that: also includes a light splitting and combining sheet, thereforA light receiving surface is arranged on one side of the light splitting and combining sheet facing the laser light source, the laser light is emitted towards the light receiving surface, the light splitting and combining sheet divides the laser light into first light and second light, the first light is reflected and emitted by the light splitting and combining sheet, and the second light is emitted after passing through the light splitting and combining sheet; the first light is reflected by the light splitting and combining sheet and then reaches the first wavelength conversion device, and the first wavelength conversion device is excited to emit first stimulated light; the laser device comprises a laser light source, a first wavelength conversion device and a second wavelength conversion device, wherein the first wavelength conversion device is arranged on the other side of a light receiving surface of the light splitting and combining sheet, the first wavelength conversion device is opposite to the laser light source, the first light passes through the light splitting and combining sheet and then reaches the first wavelength conversion device, the first wavelength conversion device is excited to emit first received laser, the first received laser and the second received laser are combined to form emergent light, the plane of the emergent light axis and the laser light axis is vertical to the light splitting and combining sheet, and the included angle between the laser light axis and the light splitting and combining sheet is a,

。

2. a high intensity illumination device as set forth in claim 1, wherein: the laser light source is arranged at one end of the shell, the second wavelength conversion device is arranged at one end of the shell, which corresponds to the laser light source, a light outlet is formed in the side wall of the shell, the first wavelength conversion device is arranged on the side wall of the shell and is opposite to the light outlet, and the light receiving surface extends from one side, which is close to the first wavelength conversion device, of the second wavelength conversion device to one side, which is close to the light outlet, of the laser light source.

3. A high intensity illumination device as set forth in claim 2, wherein: the light splitting and combining device comprises a shell, a first wavelength conversion device and a first lens group, and is characterized by further comprising a first fixing table located between the shell and the first wavelength conversion device, the first fixing table is connected with the shell, one end, facing the light splitting and combining sheet, of the first fixing table is sunken towards the other end to form a first groove, the first wavelength conversion device is arranged in the first groove, the first lens group is located between the first wavelength conversion device and the light splitting and combining sheet, and the first lens group covers the first groove.

4. A high intensity illumination device as set forth in claim 2, wherein: the light splitting and light combining device comprises a shell, a first fixing platform, a first lens group and a second lens group, wherein the shell is provided with a light splitting and light combining sheet, the first fixing platform is positioned between the shell and the first wavelength conversion device, the second fixing platform is connected with the shell, one end of the first fixing platform, facing the light splitting and light combining sheet, is sunken towards the other end to form a first groove, the first wavelength conversion device is arranged in the first groove, the second lens group is positioned between the first wavelength conversion device and the light splitting and light combining sheet, and the first lens group covers the first groove.

5. A high intensity illumination device as set forth in claim 1, wherein: the beam converging lens is positioned between the light splitting and combining sheet and the laser light source.

6. A high intensity lighting device as defined in claim 5, wherein: the beam-converging lens is characterized by further comprising a fixing device arranged around the beam-converging lens, and the fixing device is connected with the shell.

7. A high intensity lighting device as defined in claim 5, wherein: the laser light source comprises a first laser light source, a second laser light source and a third laser light source, the beam converging lens is located between the first laser light source and the light splitting and combining sheet, the second laser light source is located on one side of the first laser light source, and the third laser light source is located on the other side of the first laser light source.

8. A high intensity illumination device as set forth in claim 7, wherein: the first light path twisting device is connected with the fixing device and comprises a first light inlet area and a first light outlet area, the first light inlet area receives laser from the second laser light source, and the first light outlet area is aligned with the beam collecting lens.

9. A high intensity illumination device as set forth in claim 7, wherein: the second light path twisting device is connected with the fixing device and comprises a second light inlet area and a second light outlet area, the second light inlet area receives laser from a third laser light source, and the second light outlet area is aligned with the beam collecting lens.

10. A high intensity illumination device as set forth in claim 1, wherein: the LED lamp further comprises a glass sheet, and the glass sheet covers the light outlet.