Light source assembly and projector

Abstract

The invention discloses a light source assembly and a projector. The light source assembly comprises a light source shell (31), a laser (32) and a connecting terminal (33), the laser (32) comprises a laser body (321) and a laser pin (322) located on the laser body (321); the laser body (321) is fixedly connected with the light source shell (31), the connecting terminal (33) is electrically connected with a laser pin (322) on the laser body (321), and the connecting terminal (33) is further configured to be electrically connected with a power supply assembly. The laser body (321) is fixedly connected with the light source shell (31), and the power supply assembly is electrically connected with the laser body (321) through the connecting terminal (33), so that the structure of the light source assembly is simplified.

Description

Light source assembly and projector

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on October 13, 2022, with application number 202211256175.X, and invention name “Light Source Assembly and Projector”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of projection equipment, and in particular to a light source assembly and a projector. Background Art

[0004] A projector is a device that can project an image. It can include a light source assembly, a light valve assembly, and a projection lens. The light source assembly can be used to provide an illumination beam to the light valve assembly. The light source assembly typically includes a light source housing, a laser, a laser circuit board, and connecting leads. The laser is mounted on the laser circuit board, and the laser is electrically connected to the laser circuit board. The laser circuit board is mounted on the light source housing. One end of the connecting lead is electrically connected to the laser circuit board, and the other end of the connecting lead is electrically connected to the power supply assembly, which supplies power to the laser on the laser circuit board.

[0005] Summary of the Invention

[0006] The present invention provides a light source assembly and a projector. The technical solution is as follows:

[0007] According to one aspect of an embodiment of the present application, a light source assembly is provided, the light source assembly including a light source housing, a laser, and a connection terminal;

[0008] The laser includes a laser body and a laser pin, wherein the laser pin is located on the laser body and is electrically connected to the laser body;

[0009] The laser body is fixedly connected to the light source housing, the connecting terminal is electrically connected to the laser pin on the laser body, and the connecting terminal is also configured to be electrically connected to a power supply component.

[0010] According to another aspect of an embodiment of the present application, a projector is provided, comprising a power supply assembly and the above-mentioned light source assembly, wherein the light source assembly is electrically connected to the power supply assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings introduced below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] FIG1 is a schematic structural diagram of a projector in the related art;

[0013] FIG2 is a schematic diagram of the three-dimensional structure of the light source assembly in the projector shown in FIG1 ;

[0014] FIG3 is a schematic diagram of a three-dimensional structure of the laser and the laser circuit board in the light source assembly shown in FIG2 ;

[0015] FIG4 is a structural block diagram of the light source assembly shown in FIG2 ;

[0016] FIG5 is a schematic structural diagram of a light source assembly provided in an embodiment of the present application;

[0017] FIG6 is a schematic structural diagram of the laser in the light source assembly shown in FIG5 ;

[0018] FIG7 is a schematic structural diagram of the connecting terminals in the light source assembly shown in FIG5 ;

[0019] FIG8 is a schematic structural diagram of another light source assembly provided in an embodiment of the present application;

[0020] FIG9 is a schematic diagram of the exploded structure of the light source assembly shown in FIG8 ;

[0021] FIG10 is a schematic structural diagram of the connecting terminals and the laser in the light source assembly shown in FIG8 ;

[0022] FIG11 is a schematic structural diagram of a connecting terminal in a light source assembly provided in an embodiment of the present application;

[0023] FIG12 is a schematic diagram of the disassembled structure of another light source assembly provided in an embodiment of the present application;

[0024] FIG13 is a schematic structural diagram of another laser and connection terminals in a light source assembly provided in an embodiment of the present application;

[0025] FIG14 is a schematic structural diagram of a laser in a light source assembly provided in an embodiment of the present application;

[0026] FIG15 is a schematic structural diagram of a projector provided in an embodiment of the present application;

[0027] FIG16 is a schematic structural diagram of a connecting terminal and a laser in a light source assembly provided in an embodiment of the present application;

[0028] 17A and 17B are schematic diagrams of the connection structure of another laser, a connection terminal, and a power supply assembly provided in an embodiment of the present application;

[0029] 18A and 18B are schematic diagrams of a connection structure of another laser, a connection terminal, and a power supply assembly provided in an embodiment of the present application;

[0030] FIG19 is a schematic diagram of an electrical connection structure of internal pins of a laser provided in an embodiment of the present application;

[0031] FIG20 is a flow chart of a method for assembling a light source assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0033] A projector is a device that can project images. A projector may include a light source assembly, a light valve assembly, and a projection lens. The light source assembly provides light to the light valve assembly, which generates an image beam based on the light provided by the light source assembly. The projection lens processes and adjusts the image beam generated by the light valve assembly and projects the processed and adjusted image beam out of the projector, for example, onto a projection screen to display the image.

[0034] FIG1 is a schematic diagram of the structure of a projector in the related art, which may include a light source assembly 01 and a projection lens 02. FIG2 is a schematic diagram of the three-dimensional structure of the light source assembly in the projector shown in FIG1 , FIG3 is a schematic diagram of the three-dimensional structure of the laser and laser circuit board in the light source assembly shown in FIG2 , and FIG4 is a block diagram of the structure of the light source assembly shown in FIG2 . Please refer to FIG1 , FIG2 , FIG3 and FIG4 . The light source assembly 01 includes a light source housing 11 , a laser 12 , a laser circuit board 13 , and a connecting lead 14 . The laser 12 is mounted on the laser circuit board 13 and is electrically connected to the laser circuit board 13 . The laser circuit board 13 is mounted on the light source housing 11 . One end of the connecting lead 14 is electrically connected to the laser circuit board 13 , and the other end of the connecting lead 14 is electrically connected to the power supply assembly 15 . The power supply assembly 15 can supply power to the laser 12 on the laser circuit board 13 . In addition, since the laser circuit board 13 is usually large in size, in order to reduce the sound generated by vibration between the laser circuit board 13 and the light source housing 11, the light source assembly may further include a sound-absorbing foam 16 located between the laser circuit board 13 and the light source housing 11.

[0035] However, in the above-mentioned light source assembly, the laser is mounted on the laser circuit board and connected to the traces on the laser circuit board. The traces on the laser circuit board are also connected to one end of the connecting lead, and the other end of the connecting lead is connected to the power supply assembly. Correspondingly, the current provided by the power supply assembly will pass through the connecting wire, the connection point between the connecting wire and the laser circuit board, the conductive circuit on the laser circuit board, and the connection point between the conductive circuit on the laser circuit board and the laser, and then flow into the laser. Therefore, the structure of the light source assembly is relatively complex.

[0036] With this complex structure, the installation process of the light source assembly is also relatively cumbersome. For example, the laser is mounted on the laser circuit board. Currently, the laser is welded to the laser circuit board, and then the laser circuit board is fixed to the light source housing with screws. The entire installation process is relatively cumbersome and time-consuming, resulting in low manufacturing efficiency of the light source housing.

[0037] In addition, in order to ensure the structural strength of the laser circuit board, connection points with the laser and various connecting lines need to be set on the laser circuit board, so that the size of the laser circuit board in the light source assembly (the laser circuit board can be a printed circuit board (PCB)) is larger. On the one hand, this will lead to a larger overall volume of the light source housing. On the other hand, it is necessary to set a corresponding larger mounting structure (such as a positioning column and other structures) on the light source housing to install the laser circuit board. This greatly limits the size of the light source housing, is not conducive to the miniaturization of the light source housing, and will limit the position of the laser on the light source housing. For example, please refer to Figure 2. The larger size of the laser circuit board 13 will cause the size of the light source housing 11 in area q1 to be larger, which hinders the miniaturization of the light source housing.

[0038] The embodiments of the present application provide a light source assembly and a projector, which can simplify the power supply and driving structure of the laser, thereby simplifying the structure of the light source assembly and facilitating the miniaturization of the light source assembly.

[0039] Figure 5 is a schematic diagram of the structure of a light source assembly provided in an embodiment of the present application, Figure 6 is a schematic diagram of the structure of a laser in the light source assembly shown in Figure 5, and Figure 7 is a schematic diagram of the structure of a connection terminal in the light source assembly shown in Figure 5. Referring to Figures 5, 6, and 7, the light source assembly includes a light source housing 31, a laser 32, and a connection terminal 33.

[0040] The laser 32 includes a laser body 321 and a laser pin 322 . The laser pin 322 is located on the laser body 321 and is electrically connected to the laser body 321 .

[0041] The laser body 321 is fixedly connected to the light source housing 31 , the connection terminal 33 is electrically connected to the laser pin 322 on the laser body 321 , and the connection terminal 33 is also configured to be electrically connected to a power supply assembly (not shown in FIG. 3 and FIG. 4 ).

[0042] To sum up, the embodiment of the present application provides a light source assembly, which fixedly connects the laser body to the light source housing and electrically connects the power supply assembly to the laser body through the connecting terminal. The connecting terminal realizes the electrical connection function of the laser circuit board in the related art. In this way, there is no need to set the laser circuit board in the light source housing, which solves the problem of the relatively complex structure of the light source assembly in the related art and achieves the effect of simplifying the structure of the light source assembly.

[0043] Furthermore, since the light source assembly does not include a laser circuit board, the process of mounting the laser on the laser circuit board is eliminated, thereby improving the production efficiency of the light source housing. Furthermore, since laser circuit boards are typically large, the volume of the light source assembly can also be reduced, facilitating its miniaturization. Furthermore, the electrical connection via the connecting terminals can also avoid the noise issues encountered in the related art when using a driver circuit board.

[0044] FIG8 is a schematic diagram of the structure of another light source assembly provided in an embodiment of the present application, FIG9 is a schematic diagram of the exploded structure of the light source assembly shown in FIG8 , and FIG10 is a schematic diagram of the structure of the connecting terminal and the laser in the light source assembly shown in FIG8 . This light source assembly has undergone some adjustments based on the structure shown in FIG5 . Please refer to FIG8 , FIG9 and FIG10 , wherein the connecting terminal 33 includes a first connector 331 and a first connecting lead 332 , the first connector 331 is electrically connected to the laser pin 322 , one end of the first connecting lead 332 is electrically connected to the first connector 331 , and the other end is configured to be electrically connected to the power supply assembly.

[0045] In an exemplary embodiment, the first connector 331 is fixedly connected to the light source housing 31. That is, based on the light source assembly shown in FIG5 , the first connector 331 is also fixedly connected to the light source housing 31. This can further enhance the stability of the first connector 331 and improve the stability of the light source assembly.

[0046] In the light source assembly shown in Figure 5, the laser is fixedly connected to the light source housing, and the first connector is connected to the laser via pins, and based on this connection, it is fixed to the light source housing. In the light source assemblies shown in Figures 8, 9, and 10, the first connector 331 is further fixedly connected to the light source housing 31 to enhance the stability of the connection between the first connector 331 and the light source housing 31.

[0047] In the light source assembly provided in the embodiments of the present application, the first connector 331 can be fixedly connected to the light source housing 31 in a variety of ways. In one exemplary embodiment, the first connector 331 includes a plug-in structure 331a and a connecting piece 331b, with the connecting piece 331b connected to the plug-in structure 331a. The connecting piece 331b is fixedly connected to the light source housing via a locking member. In one specific implementation, the locking member is a first screw 331c. The number of connecting pieces corresponds to the number of first screws, and there can be multiple connecting pieces.

[0048] The plug-in structure 331 a is electrically connected to the laser pin on the laser body 321 , and the other end of the first connecting lead 332 is electrically connected to the plug-in structure 331 a .

[0049] Specifically, the connecting piece 331b has a first opening k1, and the light source housing 31 has a first screw hole s1. The first screw 331c passes through the first opening k1 of the connecting piece 331b and is threadedly engaged with the first screw hole s1 of the light source housing 31, thereby securing the connecting piece 331b to the light source housing 31. Furthermore, since the connecting piece 331b is connected to the plug structure 331a, the plug structure can also be secured to the light source housing 31. The plug structure may include a socket into which the pins of the laser can be inserted to electrically connect with the plug structure.

[0050] In this structure, the first connector 331 can be fixedly connected to the light source housing 31 by screws. Of course, the first connector 331 can also be fixedly connected to the light source housing 31 by other means, which is not limited in this embodiment of the present application.

[0051] The above embodiment provides a connection structure between a first connector and a laser pin. In this connection structure, the laser pin is plugged into the first connector, but the laser pin and the first connector can also be connected through other structures, such as overlapping, etc., and the embodiment of the present application does not limit this.

[0052] Figure 11 is a schematic diagram of the structure of a connection terminal in a light source assembly provided in an embodiment of the present application. Please refer to Figure 11. The connecting piece 331b in the first connector 331 is integral with the plug structure 331a. The connecting pieces are an even number and are positioned opposite each other on either side of the plug structure. In one embodiment, there are two connecting pieces 331b, with both connecting pieces 331b positioned on either side of the plug structure 331a.

[0053] Furthermore, in many examples of the present application, the laser has multiple groups of pins, which are located on opposite sides of the laser body. The number of groups of laser pins is an even number, and thus the number of laser pins is also an even number.

[0054] For a simple example, please refer to FIG4 . The number of groups of laser pins 322 in the laser is 2, and the two groups of laser pins 322 are located on opposite sides of the laser body. Each group of laser pins 322 may include two pins.

[0055] The number of the first connectors 331 is two, and the two first connectors 331 are electrically connected to the two groups of pins respectively.

[0056] 11 , there are two groups of first connection leads 332, and one end of each of the two groups of first connection leads 332 is electrically connected to the two first connectors 331. For example, each group of first connection leads 332 may have two connection wires.

[0057] In an exemplary embodiment, the light source assembly further includes a second connector 35, the other ends of the two sets of first connection leads 332 being electrically connected to the second connectors 35, respectively. The second connector 35 is configured to be electrically connected to the power supply assembly. The second connector can be a connector for connecting to the power supply assembly, and the specifications of the connector can match the interface on the power supply assembly for supplying power to the light source assembly, so as to facilitate electrical connection with the second connector.

[0058] Referring to Figure 9 , for each first connector 331, the number of first screws 331c is two. The two first screws 331c pass through the first openings k1 on the two connecting pieces 331b, respectively, and are threadedly connected to the first screw holes s1 on the light source housing 31. The specifications of the first screw holes s1 match those of the first screws 331c.

[0059] In an exemplary embodiment, a second screw 323 is further included, and a second screw hole s2 is further formed on the light source housing 31 . The specification of the second screw hole s2 matches the specification of the second screw 323 .

[0060] The edge of the laser body 321 has a notch k3, and the second screw 323 is located at the notch k3 and is threadedly connected to the second screw hole s2 on the light source housing 31. Under such a structure, the second screw 323 can fix the laser body 321 to the light source housing 31 through the notch k3. This fixing method through the notch k3 can reduce the space occupied by the connection area between the second screw 323 and the laser body 321 on the laser body 321, thereby facilitating the reduction of the size of the laser body 321, which is beneficial to the miniaturization of the light source assembly and the projector. Of course, in the light source assembly provided in the embodiment of the present application, the laser can also be fixedly connected to the light source housing by other means. For example, the laser can also be fixedly connected to the light source housing by at least one of bonding, clamping, and welding. The embodiment of the present application is not limited to this.

[0061] In an exemplary embodiment, the edge of the laser body has a second opening, through which a second screw passes and is threadedly connected to a second screw hole in the light source housing. In other words, the laser can also be fixed to the light source housing by passing the screw through the opening and connecting it to the screw hole in the light source housing.

[0062] In one example, the light source assembly may include multiple groups of lasers, each group having one laser, the multiple groups of lasers emitting laser light of the same color, and the multiple groups of lasers being connected in parallel. In a specific implementation, each group of lasers is distributed with a group of connection terminals, and each group of connection terminals includes one connection terminal.

[0063] In another embodiment, the plurality of laser groups emit lasers of different colors, for example, three laser groups, each emitting blue, green, and red lasers, respectively, with each group emitting a different color than the other groups. Furthermore, each group of lasers is configured with a connection terminal.

[0064] Figure 12 is a schematic diagram of the disassembled structure of another light source assembly provided in an embodiment of the present application. Please refer to Figure 12. It can be seen that since there is no need to set a laser circuit board in the light source assembly, some areas can be left vacant on the light source housing. For example, compared with the light source assembly shown in Figure 2, in the light source assembly shown in Figure 12, area q2 is not occupied by the laser circuit board, and thus this part of the light source housing 31 can be reduced to reduce the overall size of the light source housing 31, so as to facilitate the miniaturization of the projector.

[0065] In an exemplary embodiment, the light source assembly further includes a sealing structure located between the laser body and the light source housing, and abutting against the laser body and the light source housing. The sealing structure can achieve a seal between the laser body and the light source housing under the pressure of the laser body and the light source housing, thereby enhancing the stability of the operating environment within the light source housing and preventing interference from the external environment.

[0066] In an exemplary embodiment, the light source assembly may include one or more lasers. Each laser has an even number of pins, symmetrically arranged on either side of the laser body. Among these even-numbered pins, one is provided as a positive electrode, and the others are provided as negative electrode pins.

[0067] Specifically, please refer to Figure 13, which is a schematic diagram of the structure of another laser and connection terminals in the light source assembly provided in an embodiment of the present application. Figure 13 shows multiple laser units u in the laser. This figure can be a schematic diagram of the structure shown in Figure 10 on the other side. Figure 13 shows that the multiple laser units u are arranged in two rows in the laser body.

[0068] Figure 14 is a schematic diagram of the structure of a laser in a light source assembly provided in an embodiment of the present application, wherein the laser body 321 includes a substrate 3211 and a plurality of laser units (chips) arranged in an array on the substrate 3211. These multiple laser units may include a red laser unit u3 for emitting a red laser beam, a green laser unit u2 for emitting a green laser beam, and a blue laser unit u1 for emitting a blue laser beam. These laser units are arranged in two rows on the substrate 3211, one row including 7 red laser units, and the other row including 3 blue laser units and 4 green laser units. Of course, in the light source assembly provided in an embodiment of the present application, the laser can also have other structures, and the embodiment of the present application is not limited to this.

[0069] The laser pin 322 may include a first conductive pin t1, a second conductive pin t2, a third conductive pin t3, and a fourth conductive pin t4. The first conductive pin t1 may be a positive pin, and the second conductive pin t2, the third conductive pin t3, and the fourth conductive pin t4 may be negative pins. Alternatively, the first conductive pin t1 may be a negative pin, and the second conductive pin t2, the third conductive pin t3, and the fourth conductive pin t4 may be positive pins. The first conductive pin t1 may be simultaneously connected to the first ends of the plurality of red laser units u3 connected in series, the first ends of the plurality of green laser units u2 connected in series, and the first ends of the plurality of blue laser units u1 connected in series; the second conductive pin t2, the third conductive pin t3, and the fourth conductive pin t4 may be respectively connected to the second ends of the plurality of red laser units u3 connected in series, the second ends of the plurality of green laser units u2 connected in series, and the second ends of the plurality of blue laser units u1 connected in series.

[0070] When the first conductive pin t1 is the positive pin and the second conductive pin t2, the third conductive pin t3, and the fourth conductive pin t4 are the negative pins, the multiple red laser units u3, the multiple green laser units u2, and the multiple blue laser units u1 connected in series share a common positive pin. When the first conductive pin t1 is the negative pin and the second conductive pin t2, the third conductive pin t3, and the fourth conductive pin t4 are the positive pins, the multiple red laser units u3, the multiple green laser units u2, and the multiple blue laser units u1 connected in series share a common negative pin. In this structure, by sharing a common positive or negative pin, the laser packaging process is simplified and the manufacturing cost of the laser is reduced.

[0071] One end of the first conductive pin t1 , the second conductive pin t2 , the third conductive pin t3 and the fourth conductive pin t4 is connected to each laser unit, and the other end thereof extends outward for connection to the first connector.

[0072] To sum up, the embodiment of the present application provides a light source assembly, which fixedly connects the laser body to the light source housing and electrically connects the power supply assembly to the laser body through the connecting terminal. The connecting terminal realizes the electrical connection function of the laser circuit board in the related art. In this way, there is no need to set the laser circuit board in the light source housing, which solves the problem of the relatively complex structure of the light source assembly in the related art and achieves the effect of simplifying the structure of the light source assembly.

[0073] Furthermore, since the light source assembly does not include a laser circuit board, the process of mounting the laser on the laser circuit board is eliminated, thereby improving the production efficiency of the light source housing. Furthermore, since laser circuit boards are typically large, the volume of the light source assembly can also be reduced, facilitating its miniaturization. Furthermore, the electrical connection via the connecting terminals can also avoid the noise issues encountered in the related art when using a driver circuit board.

[0074] FIG15 is a schematic diagram of the internal structure of a projector provided in an embodiment of the present application, wherein the projector includes a control circuit 10 (only a portion of the control circuit is shown in FIG15 ), an optical engine 40, a projection lens 30, and a light source assembly 20. The light source assembly 20 is used to emit an illumination light beam under the control of the control circuit 10, and modulate the illumination light beam incident on the optical engine 40, and the modulated light beam enters the projection lens 30 to form an image. The projector further includes a power supply assembly (not shown in the figure), which can be a circuit board. The circuit board is usually provided with a transformer element for outputting the power supply voltage required by various optical components and electrical components. In addition, the power supply assembly can also be an adapter. In a micro projector, the power signal output can be provided by means of an adapter and an adapter board. At this time, the various components of the projector to be powered can be connected to the adapter board to achieve indirect connection with the adapter.

[0075] Figure 16 is a schematic diagram of the structure of the connecting terminals and laser in the light source assembly provided in an embodiment of the present application. Referring to Figure 16, four pins are provided on each side of the laser body 321. Correspondingly, the connecting terminal 33 includes a first connector 331 and a first connecting lead 332. The first connector 331 is electrically connected to the laser pin 322. One end of the first connecting lead 332 is electrically connected to the first connector 331, and the other end is configured to be electrically connected to the power supply assembly. Specifically, four first connecting leads 332 are also provided on each side corresponding to the four pins on each side. A total of eight first connecting leads are connected to the second connector 35.

[0076] Figures 17A and 17B are schematic diagrams of the front and back views of another connection structure between a laser, a connection terminal, and a power supply assembly, provided in an embodiment of the present application. Figure 17A is a schematic diagram of the front view of the connection between the laser, the connection terminal, and the power supply assembly. As shown in Figure 17A, the laser body 321 is plugged into the first connector 331 and connected to the power supply assembly 37 via the first connection lead 332. In this example, the power supply assembly 37 can be a power board in the projection device, which provides power for the entire system. The power board receives external AC power and converts the voltage to provide low-voltage DC power to the projection device. It can also be a circuit adapter board connected to an adapter, which performs voltage conversion and provides an adapter interface. See Figure 17B for a schematic diagram of the back view of the connection structure between the laser, the connection terminal, and the power supply assembly. The laser body 321 is plugged into the power supply assembly 37 via the first connector 331, the first connection lead 332, and finally the second connector 35.

[0077] Figures 18A and 18B are schematic diagrams of a connection structure between another laser, a connection terminal, and a power supply assembly provided in an embodiment of the present application, corresponding to the first embodiment. Figures 18A and 18B are front and back views of the above-mentioned connection structure.

[0078] Unlike the example shown in Figures 17A and 17B , in this example, the number of first connection pins 332 connected to the second connector 35 can be less than the total number of laser pins on the laser body 321. Figure 19 illustrates a schematic diagram of the internal pin electrical connection structure of a laser. Referring to Figure 19 , the laser body has four groups of eight pins on both sides, with each group corresponding to a set of positive and negative electrodes. The laser body contains multiple light-emitting chips. When arranged in rows and columns, each row of light-emitting chips corresponds to a set of positive and negative electrode pins. For example, as shown in the figure, there are four rows of light-emitting chips. In one example, when these light-emitting chips all emit the same color laser light, they can be driven to emit light simultaneously. In this case, the positive and negative electrodes of each row of these four rows of light-emitting chips can be considered to be in a series connection that can be connected end to end. In this case, in one embodiment, for structural simplicity, as shown in Figures 17A and 17B , the positive and negative electrodes of each row of chips can each correspond to a connecting lead, so that each set of positive and negative electrodes requires two connecting leads. In another embodiment, the negative electrodes of the previous row can be directly connected to the positive electrodes of the next row without passing through the second connector. As shown in FIG. 18A , FIG. 18B and FIG. 19 , the negative electrodes in the third row and the positive electrodes in the fourth row may be connected, thereby reducing two second connection leads connected to the second connector 35 , thereby simplifying the structure of the second connector 35 .

[0079] Also, in one embodiment, referring to Figure 19, when the first row of light-emitting chips and the second row of light-emitting chips emit lasers of different colors, and the third row of light-emitting chips and the fourth row of light-emitting chips emit lasers of the same color and the colors of the lasers emitted by the first row of light-emitting chips and the second row of light-emitting chips are different, then as shown in Figures 18A and 18B, the positive and negative poles of the first row of pins 1 and the second row of pins 2 are each connected to a group of connecting leads, and the negative pole of the third row of pins 3 and the positive pole of the fourth row of pins 4 are first connected in series, and the positive pole of the third row of pins 3 and the negative pole of the fourth row of pins 4 are respectively connected to a connecting lead, and finally connected to the second connector.

[0080] It should be noted that, for the sake of simplicity in explaining the principle, in the examples shown in Figures 18A and 18B, one group of pins is connected in series with the positive and negative electrodes. The embodiment of the present application does not limit the number of groups of positive and negative pins connected in series.

[0081] To sum up, the projector provided in the embodiment of the present application, by fixedly connecting the laser body to the light source housing, and electrically connecting the power supply assembly to the laser body through the connecting terminal, realizes the electrical connection function of the laser circuit board in the related art by the connecting terminal. In this way, there is no need to set the laser circuit board in the light source housing, which solves the problem of the relatively complex structure of the light source assembly in the related art and achieves the effect of simplifying the structure of the light source assembly and the projector.

[0082] Furthermore, since the light source assembly does not include a laser circuit board, the process of mounting the laser on the laser circuit board is eliminated, thereby improving the production efficiency of the light source housing. Furthermore, since laser circuit boards are typically large, the volume of the light source assembly can also be reduced, facilitating the miniaturization of the light source assembly and the projector. Furthermore, the electrical connection via the connecting terminals can also avoid the noise issues encountered in the related art when using a driver circuit board.

[0083] As shown in FIG20 , FIG20 is a flow chart of a method for assembling a light source assembly provided in an embodiment of the present application. The method can be used to assemble any of the light source assemblies provided in the above embodiments. The method for assembling the light source assembly can include the following steps:

[0084] Step 2001: Connect the first connector to the laser.

[0085] With reference to FIG10 , the number of first connectors 331 can be 2, and the two first connectors 331 are respectively on both sides of the laser 22 and plugged into the laser pins located on both sides of the laser 22 to achieve electrical connection between the first connector 331 and the laser 22. With reference to FIG11 , the number of groups of first connecting leads 332 is 2, and one end of the two groups of first connecting leads 332 is respectively electrically connected to the two first connectors 331. Exemplarily, each group of first connecting leads 332 can have two connecting wires. In an exemplary embodiment, the light source assembly further includes a second connector 35, and the other ends of the two groups of first connecting leads 332 are respectively electrically connected to the second connector 35, and the second connector 35 is configured to be electrically connected to the power supply assembly. The second connector can be a connector for connecting to the power supply assembly, and the specifications of the connector can match the interface on the power supply assembly for powering the light source assembly, so as to facilitate electrical connection with the second connector.

[0086] Step 2002: Fix the connected first connector and the laser on the light source housing.

[0087] This step may include fixing the first connector to the light source housing and fixing the laser to the light source housing. The method of fixing the first connector to the light source housing can be referred to Figure 9. For each first connector 331, the number of first screws 331c corresponds to 2, and the two first screws 331c can be respectively passed through the first openings k1 on the two connecting pieces 331b and threadedly connected with the first screw holes s1 on the light source housing 31 to fix the connecting pieces 331b to the light source housing 31. On this basis, since the connecting piece 331b is connected to the plug-in structure 331a, the plug-in structure can also be fixed to the light source housing 31. The plug-in structure may include a socket, and the pin of the laser can be inserted into the socket to be electrically connected to the plug-in structure.

[0088] In this structure, the first connector 331 can be fixedly connected to the light source housing 31 by screws. Of course, the first connector 331 can also be fixedly connected to the light source housing 31 by other means, which is not limited in this embodiment of the present application.

[0089] The manner in which the laser is fixed to the light source housing can continue to refer to FIG9 , wherein the edge of the laser body 321 has a notch k3, and the second screw 323 can be set at the notch k3 and threadedly connected to the second screw hole s2 on the light source housing 31. Under such a structure, the second screw 323 can fix the laser body 321 to the light source housing 31 through the notch k3. This fixing method through the notch k3 can reduce the space occupied by the connection area between the second screw 323 and the laser body 321 on the laser body 321, thereby facilitating the reduction of the size of the laser body 321, which is beneficial to the miniaturization of the light source assembly and the projector. Of course, in the light source assembly provided in the embodiment of the present application, the laser can also be fixedly connected to the light source housing in other ways, and the embodiment of the present application is not limited thereto.

[0090] Step 2003: electrically connect the first connecting wire connected to the first connector to the power supply assembly.

[0091] In an exemplary embodiment, please refer to Figure 11, the light source assembly also includes a second connector 35, and the other ends of the two groups of first connecting leads 332 are respectively electrically connected to the second connector 35. The second connector can be a connector for connecting to a power supply assembly. The specifications of the connector can match the interface on the power supply assembly for powering the light source assembly, so as to facilitate electrical connection with the second connector.

[0092] When the first connecting wire connected to the first connecting head is electrically connected to the power supply assembly, the second connecting head 36 can be electrically connected to the power supply assembly.

[0093] Of course, step 2003 can also be performed before step 2001, that is, the first connector can be electrically connected to the power supply component first, and then the first connector can be plugged into the laser. This embodiment of the present application does not limit this.

[0094] To sum up, the assembly method of the light source assembly provided in the embodiment of the present application connects the first connector to the laser and fixes the connected first connector and the laser on the light source housing. This saves the process of installing the laser on the laser circuit board, solves the problem of the light source housing being complicated and having low assembly efficiency in the related art, and achieves the effect of improving the assembly efficiency of the light source housing.

[0095] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A light source assembly, characterized in that: The light source assembly includes a light source housing, a laser and a connecting terminal; The laser includes a laser body and a laser pin, wherein the laser pin is located on the laser body and is electrically connected to the laser body; The laser body is fixedly connected to the light source housing, the connecting terminal is electrically connected to the laser pin on the laser body, and the connecting terminal is also configured to be electrically connected to a power supply component.

2. The light source assembly according to claim 1, wherein: The connection terminal includes a first connection head and a first connection lead, the first connection head is electrically connected to the laser pin, one end of the first connection lead is electrically connected to the connection head, and the other end is configured to be electrically connected to the power supply component.

3. The light source assembly according to claim 2, wherein: The number of groups of the laser pins is an even number, each group of laser pins corresponds to a group of positive and negative electrodes, and the laser pins are respectively located on two opposite sides of the laser body.

4. The light source assembly according to claim 3, wherein: It also includes a second connector, the other ends of the two first connecting leads are electrically connected to the second connector respectively, and the second connector is configured to be electrically connected to the power supply component or the adapter.

5. The light source assembly according to claim 3, wherein: Each laser includes a plurality of light-emitting chips, which are arranged in rows and columns, and each row of light-emitting chips has a group of positive and negative pins.

6. The light source assembly according to claim 5, wherein: The lasers emitted by the multiple rows of light-emitting chips of the laser are of different colors, and the positive and negative electrodes of the light-emitting chips emitting lasers of the same color are connected in series.

7. The light source assembly according to claim 3, wherein: The number of the laser pins is greater than or equal to the number of the first connecting leads.

8. The light source assembly according to claim 6, wherein: In the two adjacent rows of light-emitting chips emitting the same color, the cathodes of the light-emitting chips in the upper row are connected to the anodes of the light-emitting chips in the lower row via leads, and the leads are not connected to the second connector.

9. The light source assembly according to any one of claims 1 to 8, characterized in that: The power supply component is a power board or an adapter.

10. The light source assembly according to claim 9, wherein: The lasers are in groups, and the pins emitting lasers of the same color are connected in series. 10 . The light source assembly according to claim 2 , wherein the first connecting head is fixedly connected to the light source housing.

11. The light source assembly according to claim 10, wherein: The first connector includes a plug-in structure, a connecting piece, and a locking piece, wherein the connecting piece is connected to the plug-in structure; The plug-in structure is electrically connected to the laser pin on the laser body, and the other end of the first connecting lead is electrically connected to the plug-in structure; The connecting piece is connected and fixed to the light source housing via the locking piece.

12. The light source assembly according to claim 11, wherein: The locking piece is a first screw, the connecting piece has a first opening, the light source housing has a first screw hole, the first screw passes through the first opening on the connecting piece and is threadedly connected to the first screw hole on the light source housing to fix the connecting piece on the light source housing.

13. The light source assembly according to claim 11, wherein: The connecting piece and the plug-in structure are an integral piece. There are an even number of the connecting pieces, which are arranged opposite to each other on both sides of the plug-in structure.

14. The light source assembly according to claim 12, wherein: The number of the connecting pieces and the number of the first screws correspond to each other and are both multiple.

15. The light source assembly according to claim 11, wherein The edge of the laser body has a notch, and the laser is fixedly connected to the light source housing through the notch.

16. A projector, characterized in that: The projector includes a control circuit, an optical machine, a projection lens and a light source assembly as described in any one of claims 1 to 15. The light source assembly is used to emit an illumination light beam under the control of the control circuit, and modulate the illumination light beam into the optical machine for modulation. The modulated light beam enters the projection lens for imaging.

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