Light beam excitation device and light source

Abstract

The embodiment of the invention relates to the technical field of optics, and discloses a light beam excitation device and a light source. The light guide component attached to the excitation component is arranged, and the excitation light source obliquely emits the excitation light beam towards the light guide component to excite the excitation component, so that enough space can be reserved on the surface, deviating from the excitation component, of the light guide component for mounting the heat conduction component; and excitation light beams emitted by the excitation light source cannot be shielded when the heat conduction part is mounted.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of optical technology, and specifically to a light beam excitation device and a light source. Background Art

[0002] At present, with the development of technology, people's use of light is no longer limited to lighting. Different lights can be used in all walks of life to achieve many technical effects. In order to obtain a light beam that meets the work requirements, people often use an excitation component. The excitation component is a light-emitting material that can emit light of a new wavelength after absorbing light energy of a specific wavelength. It is widely used in various lighting and display fields. In practical applications, the first wavelength of the light beam emitted by the light source in the light beam excitation device excites the component. After the excitation component is excited, a second wavelength of the light beam is emitted from the light outlet. The first wavelength of the light beam is merged with the second wavelength of the light beam to obtain the desired light.

[0003] However, in the actual application of the light beam excitation device, since the excitation component often needs to be irradiated with high-power light for a long time, a large amount of heat will be generated on the excitation component. When the heat accumulation of the excitation component is too large, the luminescent material contained therein is very likely to be thermally quenched, causing the luminous intensity of the excitation component to decrease with the increase of temperature. At the same time, the excitation component may explode due to the excessive temperature of the excitation component and the large temperature difference with other components, which seriously affects the stability and luminous effect of the light beam excitation device during use.

[0004] If you want to dissipate heat from the excitation component, a more appropriate way is to add thermal conductive materials to the excitation component to conduct the heat of the excitation component through the thermal conductive materials to achieve a heat dissipation effect. However, the existing light beam excitation device does not take into account the need to install thermal conductive materials in its structural design. If the thermal conductive materials are directly installed, the light beam may be blocked, affecting the normal use of the light beam excitation device. Summary of the invention

[0005] In view of the above problems, the embodiments of the present application provide a light beam excitation device and a light source, which are used to solve the problem that it is difficult to assemble a thermally conductive material without blocking the light beam in the existing light beam excitation device.

[0006] According to one aspect of an embodiment of the present application, a light beam excitation device is provided, which includes: an excitation light source, a light guiding component and an excitation component; the light guiding component and the excitation component are arranged in contact with each other; an incident surface is adjacent to a side of the light guiding component contacting the excitation component and a side of the light guiding component facing away from the excitation component; the excitation light source is configured to face the incident surface, so that at least part of a first light beam emitted by the excitation light source enters the light guiding component through the incident surface, reaches the excitation component and excites the excitation component; the excitation component is used to emit a second light beam when excited by the first light beam; the side of the light guiding component facing away from the excitation component is used to install a heat conducting component, so that the heat generated in the light beam excitation device can be discharged at least through the light guiding component and the heat conducting component.

[0007] By providing a light-guiding component that is fitted together with the excitation component, and making the excitation light source emit a first light beam toward the incident surface of the light-guiding component to excite the excitation component, a space for installing a heat-conducting component is reserved on the side of the excitation component away from the excitation component. When the heat-conducting component is installed on the side of the light-guiding component away from the excitation component, the heat conduction efficiency is high due to the fit of the light-guiding component and the excitation component. The heat generated in the light beam excitation device can be discharged at least through the light-guiding component and the heat-conducting component. When heat dissipation is needed, the light beam excitation device provided in the embodiment of the present application can conveniently install the heat-conducting component to achieve good heat conduction and heat dissipation effects. At the same time, after the heat-conducting component is installed, it is not easy to block the first light beam emitted by the excitation light source.

[0008] In an optional manner, the light beam excitation device includes a heat-conducting component, which is attached to the side of the light-guiding component facing away from the excitation component; a plurality of side surfaces are adjacent between the side of the light-guiding component attached to the excitation component and the side of the light-guiding component facing away from the excitation component, wherein at least one side surface is configured as an incident surface; the heat-conducting component has a conducting portion, which is attached to at least a portion of the side surface of the light-guiding component that is not configured as the incident surface, so as to conduct heat out through the side surface. By providing the heat-conducting component, the heat accumulated on the excitation component and the light-guiding component can be conducted out through the heat-conducting component, thereby providing heat dissipation for the light beam excitation device. At the same time, by providing the heat-conducting component with the conducting portion, the contact area between the heat-conducting component and the light-guiding component is increased, so that the heat conduction is more rapid and the heat dissipation efficiency is higher.

[0009] In an optional manner, the light beam excitation device further comprises a first light beam processing layer, which is arranged on a side of the light guide component away from the excitation component, and the first light beam processing layer is used to reflect the first light beam and the second light beam in the light guide component; the side of the first light beam processing layer away from the light guide component is used to install the heat conduction component, so that the heat generated in the light beam excitation device is at least conducted through the light guide component, the first light beam processing layer and the heat conduction component. In practical applications, no matter at what angle the first light beam is irradiated to the excitation component, a certain mirror reflection will be generated, so that the first light beam will not be completely injected into the excitation component for excitation, and the part of the first light beam reflected by the mirror will cause a certain amount of light energy waste. By setting the first light beam processing layer, the first light beam reflected by the mirror can be reflected by the first light beam processing layer and irradiated to the excitation component again, thereby improving the utilization rate of light. At the same time, when the excitation component is excited by the first light beam, it may emit a second light beam in the direction of the light guide component, and this part of the light beam is difficult to be used. After the first light beam processing layer is set, the second light beam emitted in the direction of the light guide component can be emitted from another direction through the reflection of the first light beam processing layer, which helps to improve the utilization rate of the second light beam excited by the excitation component.

[0010] In an optional manner, the excitation light source is configured to be inclined toward the first beam processing layer, so that at least part of the first light beam emitted by the excitation light source enters the light guide component through the incident surface and reaches the first light beam processing layer. The first light beam processing layer is used to reflect the first light beam reaching it, so that the reflected first light beam reaches the excitation component after passing through the light guide component. Since the first light beam emitted by the excitation light source will cause the irradiated object to heat up when the power is large, in order to make the heat conduction more uniform, the excitation light source is tilted toward the first beam processing layer so that the first landing point of the first light beam is located on the first beam processing layer. Since the side of the first beam processing layer away from the light guide component can be used to install a heat-conducting component, the heat conduction is relatively rapid, and it is not easy to accumulate too much heat on the excitation component, which is beneficial to the heat dissipation of the light beam excitation device and is not easy to affect the normal excitation of the excitation device.

[0011] In an optional manner, a second light beam processing layer is provided on at least part of the side surface of the light guide component that is not configured as an incident surface, and the second light beam processing layer is used to reflect the first light beam and the second light beam in the light guide component. When part of the first light beam emitted by the excitation light source cannot reach the excitation component after being reflected by the first light beam processing layer due to a large diffusion angle or other reasons, the light energy of the first light beam that does not reach the excitation component will be wasted. Therefore, by providing a second light beam processing layer on at least part of the side surface of the light guide component that is not configured as an incident surface, the second light beam processing layer reflects the first light beam and the second light beam in the light guide component, which can further improve the utilization rate of the first light beam. At the same time, the part of the second light beam that is emitted by the excitation component toward the light guide component and is not convenient for use can also be reflected by the second light beam processing layer and reach the light exit area that is convenient for the second light beam to be used.

[0012] In an optional manner, a third light beam processing layer is provided between the excitation component and the light guide component, and the third light beam processing layer is used to allow the first light beam reaching thereon to penetrate, and to reflect the second light beam reaching thereon. By providing the third light beam processing layer between the excitation component and the light guide component, which can reflect the second light beam and be penetrated by the first light beam, the second light beam emitted by the excitation component to the light guide component, which is not easy to use, can be further reflected back to the light exit area that is easy to use, thereby improving the light utilization rate of the light beam excitation device.

[0013] In an optional manner, the spot area of ​​the first light beam falling on the incident surface is less than or equal to the area of ​​the incident surface. Since the excitation component must be irradiated by the light beam to be effectively excited, if the area covered by the first light beam on the plane where the incident surface is located exceeds the area of ​​the incident surface, the part of the light that exceeds the area of ​​the incident surface will be difficult to irradiate the excitation component, and will have almost no effect on the excitation of the excitation component, resulting in a waste of light energy. Therefore, by setting the spot area of ​​the first light beam falling on the incident surface to be less than or equal to the area of ​​the incident surface, the first light beam emitted by the excitation light source can be used to the maximum extent to excite the excitation component, avoiding a waste of light energy.

[0014] In an optional manner, each incident surface is configured to have at least one excitation light source facing it. In actual operation, if the energy of the light beam used for excitation is insufficient, the second light beam obtained after the wavelength conversion of the excitation component may be difficult to meet the actual operation requirements. Therefore, by setting multiple incident surfaces and multiple excitation light sources, so that each incident surface is facing at least one excitation light source, the number of first light beams for excitation received by the excitation component can be increased, ensuring that the excitation component can obtain a second light beam with a light intensity sufficient to meet the operation requirements after being excited.

[0015] In an optional manner, the light guide component is made of sapphire glass. The use of sapphire glass to make the light guide component can make the light guide component have good thermal properties and high thermal conductivity. When the heat-conducting component is installed on the side of the light guide component away from the excitation component, the good thermal conductivity of the sapphire glass can more quickly transfer the heat of the excitation component and itself to the heat-conducting component for heat dissipation. At the same time, sapphire glass has good light transmittance, high temperature resistance and strong chemical stability, which can enable the light beam excitation device provided in the embodiment of the present application to adapt to more severe use environments and improve durability.

[0016] According to another aspect of the embodiments of the present application, a light source is provided, comprising a light beam excitation device as in any one of the embodiments above. By adopting the light beam excitation device provided in the embodiments of the present application in the light source, the light source can dissipate heat more conveniently by installing a heat-conducting material, and because the excitation light source for emitting the first light beam is configured to face the incident surface of the light-guiding component, an installation space is reserved for the heat-conducting material that is conducive to heat conduction and will not block the light beam after installation, which helps to improve the operability of the light source to which the light beam excitation device provided in the embodiments of the present application is applied in terms of heat conduction and heat dissipation, and after the heat-conducting component is installed, it can avoid affecting the luminous performance of the light source when the temperature of the excitation component is too high.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0021] Figure 3 A schematic cross-sectional structure diagram of a light beam excitation device provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0023] Figure 5A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the structure of a light beam excitation device provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of an arrangement of excitation light sources of a light beam excitation device provided in an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of another arrangement of the excitation light sources of the light beam excitation device provided in an embodiment of the present application.

[0028] The reference numerals in the specific implementation manner are as follows:

[0029] 100. Light beam excitation device;

[0030] 110. an excitation light source, 111. a first light beam;

[0031] 120, light guide component, 121, incident surface, 122, side surface, 123, first light beam processing layer, 124, second light beam processing layer, 125, third light beam processing layer;

[0032] 130. Excitation components;

[0033] 140. heat conducting component, 141. conduction part. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0036] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0040] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0041] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] With the advancement of modern science and technology, light plays an important role in people's production and life. People not only rely on light for lighting, but can also use different types of light to meet different work needs. It is now a more common way to use light to convert the wavelength of light emitted by the light source through excitation components to obtain a light beam that meets the work requirements.

[0043] The inventors of the present application have noticed that, in practical applications, people often use a transmission-type excitation method in a light beam excitation device. When the excitation component is excited in a transmission manner, the excitation light beam is irradiated on the incident surface of the excitation component to excite the excitation component, and the excitation component emits a wavelength-converted light beam in the light-emitting surface opposite to the incident surface. In this excitation method, in order to reduce the heat accumulation of the excitation component, the excitation component is often set to be flat. At this time, if you want to further improve the heat dissipation effect, you can install a thermal conductive material on the excitation component. However, the two opposite surfaces with the largest area in the flat excitation component are used as the incident surface and the light-emitting surface respectively. If the thermal conductive material is installed on the surface of the flat excitation component with a smaller area, the thermal conductivity will be affected due to the small contact area between the thermal conductive material and the excitation component, and the heat dissipation will be less helpful. If it is installed on the incident surface or the light-emitting surface with a larger area, the light beam will be blocked, affecting the normal use of the excitation component. If the excitation component is thickened in order to install the thermal conductive component, and the thermal conductive material is set on the thickened surface of the excitation component that is not used as the incident surface and the light-emitting surface, the production cost will be increased. In addition, due to the increase in volume, the heat accumulation of the excitation component will be more serious, and it is difficult to ensure the heat dissipation effect.

[0044] In order to solve the above technical problems, the inventors of the present application have designed a light beam excitation device after research, by setting a light-guiding component that is in contact with the excitation component, and emitting an excitation light beam obliquely toward the light-guiding component by the excitation light source to excite the excitation component, so that the side of the light-guiding component that is away from the excitation component can reserve sufficient space for installing the heat-conducting component, and the heat-conducting component will not block the excitation beam emitted by the excitation light source when being installed.

[0045] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the light beam excitation device 100 provided in the embodiment of the present application. Figure 1As shown, on the one hand, an embodiment of the present application provides a light beam excitation device 100, comprising: an excitation light source 110, a light guide component 120 and an excitation component 130; the light guide component 120 and the excitation component 130 are arranged in contact with each other; an incident surface 121 is adjacent to a side of the light guide component 120 that is in contact with the excitation component 130 and a side of the light guide component 120 that is away from the excitation component 130; the excitation light source 110 is configured to face the incident surface 121, so that at least a part of the first light beam 111 emitted by the excitation light source 110 enters the light guide component 120 through the incident surface 121, reaches the excitation component 130 and excites the excitation component 130; the excitation component 130 is used to emit a second light beam when excited by the first light beam 111; the side of the light guide component 120 that is away from the excitation component 130 is used to install a heat-conducting component 140, so that the heat generated in the light beam excitation device 100 can be discharged at least through the light guide component 120 and the heat-conducting component 140.

[0046] The excitation light source 110 may be a laser light source or an LED light source, or any light source that can be used to excite the excitation component 130. In the embodiment of the present application, the excitation light source 110 is taken as a laser light source for illustration.

[0047] The light-guiding component 120 is any optical component that can be penetrated by light, such as a lens, etc. It should be able to ensure that the light beam can pass freely through the light-guiding component 120, and the light-guiding component 120 should be less susceptible to changes in the intensity, wavelength, scattering and other properties of the light beam. In order to meet the above purposes, the material of the light-guiding component 120 can be, for example, glass, highly transparent resin, etc.

[0048] The excitation component 130 may be a tightly integrated component of a wavelength conversion material of a yttrium aluminum garnet structure doped with at least a rare earth element, or may be a wavelength conversion material of an inorganic matrix doped with at least a rare earth element selected from Ce, Nd, Er, Yb, Ho, Tm, Dy and Sm and combinations thereof, so as to form a light-emitting material capable of emitting light of a new wavelength after absorbing light energy of a specific wavelength. When the excitation component 130 is irradiated by the first light beam 111, the excitation component 130 absorbs the first light beam 111 and emits a second light beam, and this process is the working principle of the excitation component 130. In general, the excitation component 130 converts part of the received light beam into a light beam of another wavelength, but depending on its material composition or structural design, the conversion efficiency of the excitation component 130 for the first light beam 111 often does not reach 100%, and the unabsorbed part of the first light beam 111 will be emitted together with the converted second light beam, and at this time, the two light beams of different wavelengths are mixed and output, and please refer to the following embodiments for details.

[0049] For example, in some practical applications, white light that can meet the needs of the operation is needed, so the first light beam 111 is set to blue light. By adjusting the component components of the excitation component 130, after absorbing the blue light, at least part of the blue light of the first light beam 111 can be converted into yellow light of the second light beam. The blue light of the first light beam 111 that is not converted by the excitation component 130 is scattered in the excitation component 130, and the yellow light of the second light beam is mixed with the blue light of the first light beam 111 scattered in the excitation component 130, so that a white light beam is finally obtained, which is the light beam required for the operation.

[0050] When the excitation light source 110 emits the first light beam 111 toward the incident surface 121, at least a portion of the first light beam 111 penetrates the light-guiding component 120 and irradiates the excitation component 130, so that the excitation component 130 is excited by the first light beam 111, and the excitation component 130 emits a second light beam, thereby realizing the light beam excitation effect of the light beam excitation device 100. At the same time, since the excitation light source 110 is directed toward the incident surface 121 of the light-guiding component 120, a space for installing the heat-conducting component 140 is reserved on the side of the light-guiding component 120 away from the excitation component 130. After the heat-conducting component 140 is installed on the side of the light-guiding component 120 away from the excitation component 130, the heat-conducting component 140 can conduct the heat generated on the light-guiding component 120 and the excitation component 130 due to the irradiation of the excitation light source 110, thereby realizing the heat dissipation of the light beam excitation device 100.

[0051] It should be noted that in order to achieve a good heat conduction effect, the size of the contact area between the heat-conducting component 140 and the light-guiding component 120 should be guaranteed to meet the heat conduction requirements, that is, the larger the contact area between the heat-conducting component 140 and the light-guiding component 120, the higher the heat conduction efficiency of the heat-conducting component 140 to the light-guiding component 120, and the heat conducted from the excitation component 130 to the light-guiding component 120 can also be conducted and dissipated more quickly through the heat-conducting component 140. Therefore, the side of the light-guiding component 120 that is away from the excitation component 130 should be set to correspond to the shape of the mounting surface of the heat-conducting component 140, so as to ensure that the contact area between the heat-conducting component 140 and the light-guiding component 120 is large enough when the heat-conducting component 140 is installed. For example, for a heat-conducting component 140 whose mounting surface is a plane, the side of the light-guiding component 120 that is away from the excitation component 130 is set to a plane, so that the two planes can fit closely after the heat-conducting component 140 is installed, thereby expanding the contact area and improving the heat conduction performance.

[0052] By setting a light guide component 120 that is closely attached to the excitation component 130, and making the excitation light source 110 emit a first light beam 111 toward the incident surface 121 of the light guide component 120 to excite the excitation component 130, a space for installing the heat-conducting component 140 is reserved on the side of the light guide component 120 away from the excitation component 130. After the heat-conducting component 140 is installed on the side of the light guide component 120 away from the excitation component 130, since the light guide component 120 and the excitation component 130 are closely attached, the heat conduction efficiency is high, and the heat generated in the light beam excitation device 100 can be discharged at least through the light guide component 120 and the heat-conducting component 140. Therefore, the light beam excitation device 100 provided in the embodiment of the present application can conveniently install the heat-conducting component 140 to achieve good heat conduction and heat dissipation effects when heat dissipation is needed. At the same time, after the heat-conducting component 140 is installed, it is not easy to block the first light beam 111 emitted by the excitation light source 110.

[0053] Please refer to Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of the light beam excitation device 100 provided in an embodiment of the present application, Figure 3 Schematic diagram of the cross-sectional structure of the light beam excitation device 100 provided in the embodiment of the present application. According to some embodiments of the present application, such as Figure 2 and Figure 3 As shown, the light beam excitation device 100 includes a heat-conducting component 140, which is fitted on the side of the light-guiding component 120 facing away from the excitation component 130; a plurality of side surfaces 122 are adjacent to one side of the light-guiding component 120 fitting the excitation component 130 and the other side of the light-guiding component 120 facing away from the excitation component 130, wherein at least one side surface 122 is configured as an incident surface 121; the heat-conducting component 140 has a conducting portion 141, which is fitted on at least a portion of the side surface 122 of the light-guiding component 120 that is not configured as the incident surface 121, so as to conduct heat away through the side surface 122.

[0054] The heat-conducting component 140 can be made of any material with high thermal conductivity, such as copper. In terms of specific form, the heat-conducting component 140 should correspond to the shape of the side of the light-guiding component 120 that is away from the excitation component 130. For example, if the shape of the side of the light-guiding component 120 that is away from the excitation component 130 is a boss shape that protrudes outward, then the side of the heat-conducting component 140 that faces the light-guiding component 120 should be a concave shape that is recessed inward. In the embodiment of the present application, one or more surfaces of the heat-conducting component 140 that face the light-guiding component 120 are flat. The heat-conducting component 140 can achieve heat dissipation of the excitation component 130 through its own good thermal conductivity, or it can be a heat dissipation structure that increases the heat dissipation area, such as multiple hollow copper tubes or fin heat sinks arranged on the same plane.

[0055] like Figure 3 As shown, the light-guiding component 120 has a plurality of side surfaces 122, wherein the side surface configured as the incident surface 121 is used for being directed toward and emitting the first light beam 111 by the excited light source 110. After the first light beam 111 is incident from the incident surface 121, it excites the excitation component 130. At this time, at least a portion of the first light beam 111 penetrates the light-guiding component 120 and irradiates the excitation component 130. When the first light beam 111 irradiates the excitation component 130 through the light-guiding component 120, the light-guiding component 120 and the excitation component 130 are irradiated and heated. At this time, the heat on the excitation component 130 can be conducted through the light-guiding component 120, and the heat on the light-guiding component 120 can be conducted through the conduction portion 141 and the body of the heat-conducting component 140, so that the heat generated by the excitation light source 110 in the light beam excitation device 100 can be conducted and dissipated through the light-guiding component 120 and the heat-conducting component 140.

[0056] The function of the conduction part 141 is to improve the efficiency of heat conduction of the heat conducting component 140 to the light guiding component 120 and to increase the contact surface area between the heat conducting component 140 and the light guiding component 120 . The heat on the light guiding component 120 can be transferred to the heat conducting component 140 through the conduction part 141 .

[0057] In order to improve the utilization rate of light by the light beam excitation device 110, an additional light beam processing layer can be arranged on the side of the light guide component 120 configured as the incident surface 121. For example, when the first light beam 111 used by the light beam excitation device 110 to excite the excitation component is blue light, and the second light beam emitted by the excitation component 130 is yellow light, a blue-transmitting and yellow-reflecting layer can be arranged on the incident surface 121, so that the blue light used for excitation can penetrate the incident surface 121 and illuminate the excitation component 130, while the yellow light emitted by the excitation component 130 is reflected by the blue-transmitting and yellow-reflecting layer, so as to prevent the yellow light emitted by the excitation component 130 from being emitted outward through the incident surface 121, resulting in difficulty in utilizing the light beam.

[0058] By providing a heat-conducting component 140, the heat accumulated on the excitation component 130 and the light-guiding component 120 can be discharged through the heat-conducting component 140, thereby providing heat dissipation for the light beam excitation device 100. At the same time, by providing a heat-conducting component 140 with a conduction portion 141, the contact area between the heat-conducting component 140 and the light-guiding component 120 is increased, thereby making heat conduction faster and heat dissipation more efficient.

[0059] Please refer to Figure 4 , Figure 4 Schematic diagram of the structure of the light beam excitation device 100 provided in the embodiment of the present application. According to some embodiments of the present application, such as Figure 4As shown, it also includes a first light beam processing layer 123, which is arranged on a side of the light guide component 120 away from the excitation component 130, and the first light beam processing layer 123 is used to reflect the first light beam 111 and the second light beam in the light guide component 120; the side of the first light beam processing layer 123 away from the light guide component 120 is used to install the heat conduction component 140, so that the heat generated in the light beam excitation device 100 can be discharged at least through the light guide component 120, the first light beam processing layer 123 and the heat conduction component 140.

[0060] The first light beam processing layer 123 refers to an optical component capable of reflecting light, such as a mirror, a mirror reflective coating or the like, and the purpose is to reflect the first light beam 111 and the second light beam in the light guide component 120 .

[0061] exist Figure 4 In the figure, for the convenience of description, the first light beam 111 emitted by the excitation light source 110 is approximately represented as a straight line. Figure 4 As shown, the first light beam 111 emitted by the excitation light source 110 passes through the light-guiding component 120 to reach the excitation component 130 , and part of the first light beam 111 is reflected by the mirror of the excitation component 130 and then emitted to the first light beam processing layer 123 , and the first light beam processing layer 123 is used to reflect this part of the first light beam 111 to the excitation component 130 again.

[0062] In actual applications, no matter at what angle the first light beam 111 irradiates the excitation component 130, a certain degree of mirror reflection will be sent, so that the first light beam 111 will not be completely emitted into the excitation component 130 for excitation, and a part of the first light beam 111 reflected by the mirror will cause a certain amount of light energy waste. By setting the first light beam processing layer 123, the first light beam 111 that is not used to excite the excitation component 130 after being reflected by the mirror can be reflected by the first light beam processing layer 123 and irradiated onto the excitation component 130 again, thereby improving the utilization rate of light. At the same time, when the excitation component 130 is excited by the first light beam 111, the second light beam emitted by the excitation component 130 in the direction of the light guide component 120 is difficult to be utilized. After the first light beam processing layer 123 is set, the second light beam emitted in the direction of the light guide component 120 can be emitted from another direction through the reflection of the first light beam processing layer 123, which helps to improve the utilization rate of the second light beam excited by the excitation component 130.

[0063] At the same time, when the first light beam 111 irradiates a point of the excitation component 130 for a long time, the temperature of the irradiated position of the excitation component 130 will be high. When the temperature exceeds the bearing capacity of the optical material of the excitation component 130, it will affect the absorption effect of the excitation component 130 on the first light beam 111, resulting in a waste of light energy. Therefore, in some embodiments, a semi-transparent and semi-reflective mirror can be arranged between the excitation component 130 and the light guide component 120 to avoid the problem of excessive temperature in a single area of ​​the excitation component 130.

[0064] A semi-transparent and semi-reflective mirror is also called a beam splitter or a beam splitter. It is an optical element that changes the transmission and reflection ratio of an incident light beam by coating a semi-reflective film on optical glass. The coating layer can increase the transmittance and increase the light intensity, and can also increase the reflection and reduce the light intensity. In general, the transmittance and refractive index of a semi-transparent and semi-reflective mirror are each about 50%. Semi-transparent and semi-reflective mirrors with different transmittances and refractive indices can also be coated according to actual needs. After a semi-transparent and semi-reflective mirror is arranged between the excitation component 130 and the light-guiding component 120, when the first light beam 111 is irradiated on the semi-transparent and semi-reflective mirror, part of the first light beam 111 is irradiated on the excitation component 130 through the semi-transparent and semi-reflective mirror and is absorbed by the excitation component 130. The rest of the first light beam 111 is reflected by the semi-transparent and semi-reflective mirror and reaches the first light beam processing layer 123, and is reflected by the first light beam processing layer 123 again and reaches the semi-transparent and semi-reflective mirror. The first light beam 111 can repeat the above process in the light-guiding component 120. The number of cycles depends on the length of the light-guiding component 120 along the emission direction of the first light beam 111 and the emission angle of the first light beam 111. It can be understood that the longer the length of the light-guiding component 120 along the emission direction of the first light beam 111, the larger the angle close to the excitation light source 110 when the first light beam 111 intersects with the plane of the first light beam processing layer 123 or the excitation component 130 close to the light-guiding component 120, and the more light spots of the first light beam 111 on the excitation component 130 after transmission and reflection.

[0065] When the power of the first light beam 111 is relatively high, the high-power first light beam 111 can be dispersed and irradiated to a plurality of different positions of the excitation component 130 after each reflection by the first light beam processing layer 123 and transmission and reflection by the semi-transparent and semi-reflective mirror. A plurality of different positions on the excitation component 130 are respectively irradiated by part of the first light beam 111, so that the heating of the excitation component 130 is more uniform, and it is not easy for a single position to be directly irradiated by the high-power first light beam 111 and cause excessive temperature, thereby affecting the optical performance. At the same time, since the first light beam 111 can be dispersed to a plurality of positions of the excitation component 130 for absorption respectively, the absorption efficiency of the excitation component 130 for the first light beam 111 is improved.

[0066] Please refer to Figure 5 , Figure 5Schematic diagram of the structure of the light beam excitation device 100 provided in the embodiment of the present application. According to some embodiments of the present application, such as Figure 5 As shown, the excitation light source 110 is configured to be inclined toward the first light beam processing layer 123, so that at least part of the first light beam 111 emitted by the excitation light source 110 enters the light guiding component 120 through the incident surface 121 and reaches the first light beam processing layer 123. The first light beam processing layer 123 is used to reflect the first light beam 111 reaching it, so that the reflected first light beam 111 reaches the excitation component 130 after passing through the light guiding component 120.

[0067] exist Figure 5 In the figure, for the convenience of description, the first light beam 111 emitted by the excitation light source 110 is approximately represented as a straight line. Figure 5 As shown, the excitation light source 110 is inclined toward the first beam processing layer 123 , and the emitted first light beam 111 reaches the first beam processing layer 123 through the incident surface 121 of the light guide component 120 , and reaches the excitation component 130 after being reflected by the first beam processing layer 123 , thereby exciting the excitation component 130 .

[0068] Since the first light beam 111 emitted by the excitation light source 110 will cause the irradiated object to heat up when the power is high, in order to make the heat conduction more uniform, the excitation light source 110 is tilted toward the first light beam processing layer 123, so that the first landing point of the first light beam 111 is located on the first light beam processing layer 123. Since the side of the first light beam processing layer 123 facing away from the light guiding component 120 can be used to install the heat conducting component 140, the heat conduction is relatively rapid, and it is not easy for too much heat to accumulate on the excitation component 130, which is beneficial to the heat dissipation of the light beam excitation device 100 and is not easy to affect the normal excitation of the light beam excitation device 100.

[0069] Please refer to Figure 6 , Figure 6 Schematic diagram of the structure of the light beam excitation device 100 provided in the embodiment of the present application. According to some embodiments of the present application, such as Figure 6 As shown, at least part of the side surface 122 of the light guide component 120 that is not configured as the incident surface 121 is provided with a second light beam processing layer 124 , and the second light beam processing layer 124 is used to reflect the first light beam 111 and the second light beam in the light guide component 120 .

[0070] The second light beam processing layer 124 refers to an optical component capable of reflecting light, such as a mirror, a mirror reflective coating or the like.

[0071] Please refer to Figure 6When part of the first light beam 111 emitted by the excitation light source 110 cannot reach the excitation component 130 after being reflected by the first light beam processing layer 123 due to a large diffusion angle or other reasons, the light energy of the first light beam 111 that does not reach the excitation component 130 will be wasted. Therefore, by setting a second light beam processing layer 124 on at least part of the side surface 122 of the light guide component 120 that is not configured with the non-incident surface 121, the second light beam processing layer 124 reflects the first light beam 111 and the second light beam in the light guide component 120, which can further improve the utilization rate of the first light beam 111. At the same time, the part of the second light beam emitted by the excitation component 130 toward the light guide component 120 that is not easy to use can also be reflected by the second light beam processing layer 124 and reach the light output area where the second light beam is easy to use.

[0072] In some embodiments, the first light beam processing layer 123 and the second light beam processing layer 124 mentioned in the above embodiments may also be integrally formed into a whole and sleeved on the light guide component 120. At the same time, the second light beam processing layer 124 may also cover the surface of the excitation component 130 that is not covered by the optical component and is configured as a light emitting surface, so as to improve the light effect.

[0073] Please refer to Figure 7 , Figure 7 Schematic diagram of the structure of the light beam excitation device 100 provided in the embodiment of the present application. According to some embodiments of the present application, such as Figure 7 As shown, a third light beam processing layer 125 is disposed between the excitation component 130 and the light guide component 120 . The third light beam processing layer 125 is used to allow the first light beam 111 reaching thereon to penetrate, and to reflect the second light beam reaching thereon.

[0074] Among them, the third beam processing layer 125 can be a coating on the outer surface of the excitation component 130, or it can be a thin layer close to the outer surface of the excitation component 130. According to the actual situation of the first light beam 111 and the second light beam, the functional specifications of the third beam processing layer 125 should also change accordingly. For example, the first light beam 111 is a blue light laser, the excitation component 130 is excited, and the second light beam emitted through the light output surface after wavelength conversion is yellow light. At this time, the third beam processing layer 125 can be a blue-transmitting and yellow-reflecting coating to allow the blue light laser to penetrate, while the converted yellow light is reflected.

[0075] By arranging a third light beam processing layer 125 between the excitation component 130 and the light guiding component 120, which can reflect the second light beam and be penetrated by the first light beam 111, the second light beam that is difficult to use and emitted by the excitation component 130 to the light guiding component 120 can be further reflected back to a light emitting area that is easy to use, thereby improving the light utilization rate of the light beam excitation device 100.

[0076] According to some embodiments of the present application, the spot area of ​​the first light beam 111 falling on the incident surface 121 is smaller than or equal to the area of ​​the incident surface 121 .

[0077] Since the excitation component 130 must be irradiated by a light beam to be effectively excited, if the area covered by the first light beam 111 on the plane where the incident surface 121 is located exceeds the area of ​​the incident surface 121, the part of the light that exceeds the area of ​​the incident surface 121 will be difficult to irradiate the excitation component 130, and will have almost no effect on the excitation of the excitation component 130, which will cause a waste of light energy. Therefore, by setting the spot area of ​​the first light beam 111 falling on the incident surface 121 to be less than or equal to the area of ​​the incident surface 121, the first light beam 111 emitted by the excitation light source 110 can be used to the maximum extent for the excitation of the excitation component 130, thereby avoiding a waste of light energy.

[0078] Please refer to Figure 8 and Fig. 9 , Figure 8 A schematic diagram of an arrangement of the excitation light source 110 of the light beam excitation device 100 provided in an embodiment of the present application, Fig. 9 Schematic diagram of another arrangement of the excitation light source 110 of the light beam excitation device 100 provided in an embodiment of the present application. According to some embodiments of the present application, Figure 8 and Fig. 9 As shown, each incident surface 121 is configured to have at least one excitation light source 110 disposed toward it.

[0079] Among them, refer to Figure 8 and Fig. 9 , the shape formed by the multiple incident surfaces 121 of the excitation component 130 in the top view can be a triangle or a quadrilateral. When the intensity of the second light beam required in the actual operation increases, the number of sides of the shape formed by the multiple incident surfaces 121 of the excitation component 130 in the top view can be increased accordingly, so that each incident surface 121 can be irradiated by the first light beam 111 emitted by at least one excitation light source 110. Similarly, the multiple incident surfaces 121 can form a pentagonal, hexagonal or circular arrangement in the top view, so that the multiple excitation light sources 110 are arranged around the excitation component 130 and excite the excitation component 130, so that the intensity of the second light beam emitted by the excitation component 130 is increased. It should be noted that when the top view of the excitation component 130 is circular, it should be understood that it has multiple incident surfaces 121 instead of one. At this time, the first light beam 111 emitted by one excitation light source 110 can irradiate multiple incident surfaces 121 at the same time.

[0080] In actual operation, if the energy of the light beam used for excitation is insufficient, the second light beam obtained after the wavelength conversion of the excitation component 130 may be difficult to meet the actual operation requirements. Therefore, by setting multiple incident surfaces 121 and multiple excitation light sources 110, so that each incident surface 121 is facing at least one excitation light source 110, the number of first light beams 111 for excitation received by the excitation component 130 can be increased, ensuring that the excitation component 130 can obtain a second light beam with a light intensity sufficient to meet the operation requirements after being excited.

[0081] According to some embodiments of the present application, the light guide component 120 is made of sapphire glass.

[0082] Among them, in practical applications in the optical field, sapphire glass generally refers to artificially synthesized sapphire, whose main component is aluminum oxide, and its chemical composition and physical properties are the same as those of natural sapphire.

[0083] According to actual operational needs, various chemical elements can be added during the preparation of sapphire glass to produce sapphire glass of various colors. Generally, commonly used sapphire glass is colorless and transparent.

[0084] Using sapphire glass to make the light guide component 120 can make the light guide component 120 have good thermal properties and high thermal conductivity. When the heat-conducting component 140 is installed on the side of the light guide component 120 away from the excitation component 130, the good thermal conductivity of the sapphire glass can more quickly transfer the heat of the excitation component 130 and itself to the heat-conducting component 140 for heat dissipation. At the same time, sapphire glass has good light transmittance, high temperature resistance and strong chemical stability, which can enable the light beam excitation device 100 provided in the embodiment of the present application to adapt to more severe usage environments and improve durability.

[0085] According to another embodiment of the present application, a light source is provided, comprising the light beam excitation device 100 according to any one of the above embodiments.

[0086] By adopting the light beam excitation device 100 provided in the embodiment of the present application in the light source, the light source can more conveniently dissipate heat by installing heat-conducting materials. Moreover, since the excitation light source 110 for emitting the first light beam 111 is configured to face the incident surface 121 of the light guide component 120, an installation space is reserved for the heat-conducting material that is conducive to heat conduction and will not block the light beam after installation. This helps to improve the operability of the light source using the light beam excitation device 100 provided in the embodiment of the present application in terms of heat conduction and heat dissipation. After the heat-conducting component 140 is added, it can avoid the luminous performance of the light source being affected by the excessive temperature of the excitation component 130.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A light beam excitation device, characterized in that: include: Excitation light source, light guide component and excitation component; The light guide component and the excitation component are arranged in contact with each other; An incident surface is adjacent to a side of the light guide component that is in contact with the excitation component and a side of the light guide component that is away from the excitation component; The excitation light source is configured to face the incident surface, so that at least part of the first light beam emitted by the excitation light source enters the light guide component through the incident surface, reaches the excitation component and excites the excitation component; The exciting component is used to emit a second light beam when excited by the first light beam; A side of the light-guiding component facing away from the excitation component is used for mounting a heat-conducting component, so that the heat generated in the light beam excitation device can be discharged at least through the light-guiding component and the heat-conducting component.

2. The light beam excitation device according to claim 1, characterized in that: The light beam excitation device comprises the heat-conducting component, and the heat-conducting component is arranged on a side of the light-conducting component away from the excitation component; A plurality of side surfaces are adjacent to a side of the light guide component that is in contact with the excitation component and a side of the light guide component that is away from the excitation component, wherein at least one side surface is configured as the incident surface; The heat-conducting component has a conducting portion, and the conducting portion is arranged in contact with at least a portion of the side surface of the light-conducting component that is not configured as the incident surface, so as to conduct heat away through the side surface.

3. The light beam excitation device according to claim 1, characterized in that: It also includes a first light beam processing layer, which is arranged on a side of the light guide component away from the excitation component, and is used to reflect the first light beam and the second light beam in the light guide component; The side of the first beam processing layer facing away from the light guiding component is used for mounting the heat conducting component, so that the heat generated in the beam excitation device can be discharged at least through the light guiding component, the first beam processing layer and the heat conducting component.

4. The light beam excitation device according to claim 3, characterized in that: The excitation light source is configured to be inclined toward the first light beam processing layer so that at least a portion of the first light beam emitted by the excitation light source enters the light guiding component through the incident surface and reaches the first light beam processing layer, and the first light beam processing layer is used to reflect the first light beam reaching it so that the reflected first light beam reaches the excitation component after passing through the light guiding component.

5. The light beam excitation device according to claim 3, characterized in that: A second light beam processing layer is provided on at least part of the side surface of the light guide component that is not configured as the incident surface, and the second light beam processing layer is used to reflect the first light beam and the second light beam in the light guide component.

6. The light beam excitation device according to any one of claims 1 to 5, characterized in that: A third light beam processing layer is arranged between the excitation component and the light guide component. The third light beam processing layer is used for allowing the first light beam reaching thereon to penetrate and reflecting the second light beam reaching thereon.

7. The light beam excitation device according to any one of claims 1 to 5, characterized in that: The spot area of ​​the first light beam falling on the incident surface is smaller than or equal to the area of ​​the incident surface.

8. The light beam excitation device according to claim 7, characterized in that: Each of the incident surfaces is configured such that at least one of the excitation light sources is disposed toward it.

9. The light beam excitation device according to claim 1, characterized in that: The light guide component is made of sapphire glass.

10. A light source, characterized in that: It comprises a light beam excitation device as described in any one of claims 1 to 9.

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