Optical Element Fixing Assembly and Light Source System

Abstract

The present invention provides an optical element fixing assembly and a light source system. The optical element fixing assembly is used for the light source system. The light source system includes a housing, and the optical element fixing assembly is fixed to the housing. The optical element fixing assembly includes a carrier, a first optical element, and a second optical element. The carrier is an integral structure. The first optical element is fixed to the carrier, and the second optical element is fixed to the carrier and parallel to the first optical element, so that the incident light forms parallel outgoing light after passing through the second optical element and the first optical element. The optical element fixing assembly and the light source system provided by the present invention have a simple structure, simple processing, and low cost by setting the carrier as an integrally formed structure, enabling the carrier to be mass-produced and ensuring parallel accuracy, which is convenient for assembly. By arranging the second optical element parallel to the first optical element, the area of the outgoing light spot is reduced, thereby achieving the effect of energy concentration and improving the light efficiency.

Description

Technical Field

[0001] The present invention relates to the field of optical technologies, and in particular, to an optical element fixing assembly and a light source system. Background Art

[0002] The light-emitting body of devices such as projection devices has a relatively large structure itself and requires a large installation space. In order to miniaturize the projection device, the multi-path parallel light beams of the light-emitting body need to compress the light spot before passing through the lens. In the current optical light path, double diaphragms are often used to meet such technical requirements. The parallel light beams after passing through the double diaphragms need to remain parallel, which requires a fixing device with a very high parallelism to fix the two diaphragms. However, the existing fixing devices are difficult to process, and corresponding slots need to be processed on the outer shell, which is difficult to process. Moreover, it is very difficult for the existing fixing devices to ensure the parallelism between the two diaphragms. Summary of the Invention

[0003] The purpose of the present invention is to provide an optical element fixing assembly and a light source system to solve the above problems. The embodiments of the present invention achieve the above purpose through the following technical solutions.

[0004] In a first aspect, the present invention provides an optical element fixing assembly. The optical element fixing assembly is used for a light source system. The light source system includes a housing. The optical element fixing assembly is fixed to the housing. The optical element fixing assembly includes a carrier, a first optical element, and a second optical element. The carrier is an integral structure. The first optical element is fixed to the carrier. The second optical element is fixed to the carrier and is parallel to the first optical element, so that the incident light forms parallel outgoing light after acting on the second optical element and the first optical element.

[0005] In an embodiment, the carrier includes a first plate, a second plate, and a third plate. The first plate and the second plate are parallel, and the third plate is disposed between the first plate and the second plate.

[0006] In an embodiment, the first optical element is fixed between the first plate and the second plate, and the second optical element is fixed between the first plate and the second plate.

[0007] In an embodiment, the carrier includes three first positioning steps. At least one first positioning step is provided on both the first plate and the second plate. The first optical element is attached to the three first positioning steps.

[0008] In an embodiment, the optical element fixing assembly further includes a plurality of elastic fixing members. The plurality of elastic fixing members are disposed on the first plate and the second plate. The elastic fixing member includes a fixing portion and a bending portion connected at an acute angle. The fixing portion is fixed to the carrier, and the projection of the bending portion toward the third plate falls within the first positioning step.

[0009] In one embodiment, the elastic fixing members correspond one-to-one with the number and positions of the first positioning steps.

[0010] In one embodiment, the carrier further includes three second positioning steps disposed on the third plate, and the second optical element is attached to the three second positioning steps.

[0011] In one embodiment, the optical element fixing assembly further includes a plurality of elastic fixing members disposed on the third plate. The elastic fixing members include a fixing portion and a bending portion connected at an acute angle. The fixing portion is fixed to the carrier, and the projection of the bending portion onto the third plate falls within the second positioning step.

[0012] In one embodiment, the elastic fixing members correspond one-to-one with the number and positions of the second positioning steps.

[0013] In one embodiment, the carrier further includes a plurality of first limiting portions and second limiting portions. The plurality of first limiting portions are disposed at the edges of the first plate and the second plate to limit the first optical element; the plurality of second limiting portions are disposed at the edges of the third plate to limit the second optical element.

[0014] In a second aspect, the present invention provides a light source system, which includes the above-mentioned optical element fixing assembly and a housing, and the optical element fixing assembly is received in the housing.

[0015] Compared with the prior art, the optical element fixing assembly and the light source system provided by the present invention have a simple structure, simple processing, and low cost by setting the carrier as an integral structure, enabling the carrier to be mass-produced, ensuring parallel accuracy, facilitating assembly, and fixing the optical element on the carrier to achieve firm and reliable fixation. By arranging the second optical element parallel to the first optical element, the area of the emitted light spot is reduced, thereby achieving the effect of energy concentration and improving the light efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 FIG. is a schematic structural diagram of the optical element fixing assembly provided by an embodiment of the present invention.

[0018] Figure 2 FIG. is a top view of the optical element fixing assembly provided by an embodiment of the present invention.

[0019] Figure 3It is the optical path diagram of the optical element fixing assembly provided by the embodiment of the present invention.

[0020] Figure 4 It is the structural schematic diagram of the carrier of the optical element fixing assembly provided by the embodiment of the present invention.

[0021] Figure 5 It is Figure 4 the top view of.

[0022] Figure 6 It is the exploded schematic diagram of the optical element fixing assembly provided by the embodiment of the present invention.

[0023] Figure 7 It is the structural schematic diagram of the light source system provided by the embodiment of the present invention. Detailed implementation manners

[0024] For the convenience of understanding this embodiment, the following will describe this embodiment more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used in this embodiment herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention.

[0026] Please refer to Figure 1 and Figure 2 , this embodiment provides an optical element fixing assembly 10. The optical element fixing assembly 10 is used for a light source system. The light source system includes a housing. The optical element fixing assembly 10 is fixed to the housing. The optical element fixing assembly 10 includes a carrier 11, a first optical element 13, and a second optical element 15. The carrier 11 is an integral structure. The first optical element 13 is fixed to the carrier 11. The second optical element 15 is fixed to the carrier 11 and is parallel to the first optical element 13 so that the incident light forms parallel outgoing light after acting on the second optical element 15 and the first optical element 13.

[0027] Specifically, in this embodiment, the optical element fixing assembly 10 is for a light source system. The light source system includes a housing, which is the outer shell of the light source system. The optical element fixing assembly 10 is an assembly independent of the housing. The optical element fixing assembly 10 is fixed to the housing, and the fixing method can be screw connection, etc. By making the optical element fixing assembly 10 an independent assembly and fixing it on the housing, it is convenient for the pre-production line to assemble the optical element fixing assembly 10 and for subsequent maintenance, saving assembly time and easily ensuring the parallel accuracy of the optical elements.

[0028] Please continue to refer to Figure 1 , in this embodiment, the carrier 11 includes a first plate 111, a second plate 113, and a third plate 115. Among them, the first plate 111 and the second plate 113 are parallel, and the outer shapes of the first plate 111 and the second plate 113 can be the same, that is, the first plate 111 and the second plate 113 can be approximately symmetric about the central axis of the third plate 115. Such a setting can make the process of the carrier 11 simpler, thus facilitating the mass production of the carrier 11. In other embodiments, the first plate 111 and the second plate 113 can also be inclined to each other. The third plate 115 is disposed between the first plate 111 and the second plate 113. The two ends of the third plate 115 can protrude beyond the edges of the first plate 111 or the second plate 113, or can be connected end to end with the first plate 111 and the second plate 113. Correspondingly, the first plate 111 or the second plate 113 can also protrude beyond the edge of the third plate 115. The first plate 111, the second plate 113, and the third plate 115 can be made of metal materials and can be made into an integral structure through processes such as die casting, forging, and rolling.

[0029] The first plate 111 has a generally parallelogram plate-like structure. The first plate 111 includes a first end face 1112, a first inner surface 1114, and a first outer surface 1116. Among them, the first outer surface 1116 is opposite to the first inner surface 1114, the first inner surface 1114 is directly connected to the third plate 115, and the first end face 1112 is used to connect the first inner surface 1114 and the first outer surface 1116.

[0030] The connection between the first end face 1112 and the first outer surface 1116 can be transitioned through an arc surface. By setting the connection between the first end face 1112 and the first outer surface 1116 to be transitioned through an arc surface, the strength of the edge of the first plate 111 can be increased. It can be understood that the connection between the first end face 1112 and the first inner surface 1114 can also be transitioned through an arc surface. In this embodiment, the first outer surface 1116 can be parallel to the first inner surface 1114. In other embodiments, the first outer surface 1116 and the first inner surface 1114 can also be inclined at an angle to each other.

[0031] The second plate 113 is also in a substantially parallelogram plate-like structure. The second plate 113 can be parallel to the first plate 111. The second plate 113 includes a second end face 1132, a second inner surface 1134, and a second outer surface 1136. Among them, the second end face 1132 and the second inner surface 1134 are connected. The second inner surface 1134 is directly connected to the third plate 115. The second outer surface 1136 is opposite to the second inner surface 1134, that is, the second end face 1132 is connected between the second inner surface 1134 and the second outer surface 1136. The second end face 1132 and the second outer surface 1136 can be connected by an arc surface transition. The second end face 1132 and the second inner surface 1134 can also be connected by an arc surface transition.

[0032] The third plate 115 is in a substantially rectangular plate-like structure. The third plate 115 is connected between the first inner surface 1114 and the second inner surface 1134. The third plate 115 includes a first surface 1152 and a second surface 1153 that are opposite to each other. Among them, the first surface 1152 is connected between the first inner surface 1114 and the second inner surface 1134. The first surface 1152 can be parallel to the second surface 1153. The third plate 115 further includes a first side surface 1154 and a second side surface 1156 that are opposite to each other. The first side surface 1154 can be coplanar with the first inner surface 1114. The second side surface 1156 can be coplanar with the second inner surface 1134. The first side surface 1154 can also be parallel to the second side surface 1156.

[0033] The first optical element 13 is fixed to the carrier 11. Specifically, the first optical element 13 can be in a substantially rectangular plate-like structure. The first optical element 13 can have the functions of reflecting light and transmitting a certain amount of light. The first optical element 13 is fixed between the first plate 111 and the second plate 113.

[0034] In other embodiments, the first optical element 13 can also be directly attached between the first end face 1112 and the second end face 1132.

[0035] The second optical element 15 is fixed to the carrier 11. Specifically, in this embodiment, the second optical element 15 can also be in a substantially rectangular plate-like structure. The second optical element 15 can have the function of reflecting light. The second optical element 15 is fixed between the first plate 111 and the second plate 113.

[0036] In other embodiments, the second optical element 15 can also be directly attached to the first surface 1152 of the third plate 115. The second optical element 15 reflects the incident light and reflects the light to the first optical element 13. Please refer to Figure 3, the optical element fixing assembly 10 can reduce the spot area. Specifically, light rays are emitted from a light source with a relatively large spot area as incident light rays. The incident light rays are incident on the first optical element 13 and the second optical element 15 simultaneously. A part of the incident light forms partial outgoing light after being reflected by the second optical element 15 and the first optical element 13 in sequence, and another part of the incident light directly passes through the first optical element 13 and converges with the aforementioned partial outgoing light, thereby achieving the effect of reducing the spot area.

[0037] In summary, for the optical element fixing assembly 10 provided in this embodiment, by setting the carrier 11 into an integral structure, the carrier 11 can be mass-produced, and the parallelism accuracy can be ensured, which is convenient for assembly. By arranging the second optical element 15 parallel to the first optical element 13, the spot area of the outgoing light is reduced, thereby achieving the effect of energy concentration and improving the light efficiency.

[0038] Please refer to Figure 4 , further, the carrier 11 may further include structures such as a first positioning step 117 and a second positioning step 118.

[0039] The carrier 11 further includes three first positioning steps 117. The three first positioning steps 117 are respectively arranged on the first end face 1112 and the second end face 1132, that is, at least one first positioning step 117 is arranged on the first end face 1112 and the second end face 1132. For example, two first positioning steps 117 are arranged on the first end face 1112 and one first positioning step 117 is arranged on the second end face 1132. The positions of the two first positioning steps 117 on the first end face 1112 relative to the first end face 1112 may be the same. By setting the carrier 11 into a three-point support positioning structure, the first optical element 13 is supported in a plane. It is also possible to arrange one first positioning step 117 on the first end face 1112 and two first positioning steps 117 on the second end face 1132 to support the first optical element 13 in a plane. In this embodiment, the edge of the first positioning step 117 may be located inside the first end face 1112. In other embodiments, the edge of the first positioning step 117 may also be flush with the edge of the first end face 1112. The heights of the three first positioning steps 117 may be the same, so as to form a support surface for supporting other components, thereby ensuring the flatness of the optical element.

[0040] The carrier 11 further includes three second positioning steps 118. The three second positioning steps 118 protrude from the first surface 1152. The second positioning steps 118 are distributed at both ends of the third plate 115 along the direction from the first plate 111 to the second plate 113. At least two second positioning steps 118 on the same side can be irregularly distributed on the first surface 1152, or can be arranged according to a certain rule, such as in a linear matrix or a circular matrix. The heights between the three second positioning steps 118 can be the same, and the heights of the second positioning steps 118 and the first positioning steps 117 can be the same. Such a setting can reduce the processing difficulty. For example, when milling the carrier 11, the second steps can be directly processed from the first step without switching the step height parameters in the programming. It can be understood that the heights of the second positioning steps 118 and the first positioning steps 117 can also be different.

[0041] Please continue to refer to Figure 4 , the carrier 11 further includes a plurality of first limiting portions 119 and a plurality of second limiting portions 120. The plurality of first limiting portions 119 are arranged at the edges of the first plate 111 and the second plate 113. Specifically, in this embodiment, two first limiting portions 119 are respectively located at both ends of the first end face 1112 along the direction perpendicular to the direction from the first plate 111 to the second plate 113. The distance between the two first limiting portions 119 can be set according to the actual situation. The first limiting portions 119 protrude from the first end face 1112. The other two first limiting portions 119 are respectively located at both ends of the second end face 1132 along the direction perpendicular to the direction from the first plate 111 to the second plate 113. The first limiting portions 119 also protrude from the second end face 1132. In other embodiments, the first end face 1112 can include two first limiting portions 119 and the second end face 1132 can include one first limiting portion 119. In one embodiment, each of the first end face 1112 and the second end face 1132 includes one first limiting portion 119, and the two first limiting portions 119 are located at both ends of the carrier 11. The positions of the two first limiting portions 119 on the same side of the first plate 111 and the second plate 113 correspond. Herein, "correspond" can be understood as the line connecting the central axes of the two limiting portions can be parallel to the boundary of the first end face 1112.

[0042] The plurality of second limiting portions 120 are arranged at the edges of the third plate 115. Specifically, the plurality of second limiting portions 120 protrude from the first surface 1152. The protruding height of the second limiting portions 120 can be the same as the protruding height of the first limiting portions 119. At least two second limiting portions 120 among the plurality of second limiting portions 120 are respectively located at both ends of the first surface 1152 along the direction perpendicular to the direction from the first plate 111 to the second plate 113. When any side of the first surface 1152 includes 2, 3 or more second limiting portions 120, the lines connecting the centers of the several second limiting portions 120 on the same side can be located on the same straight line.

[0043] Please continue to refer to Figure 4 , the carrier 11 is further provided with a plurality of through holes 116 and a plurality of grooves 114. In this embodiment, the plurality of through holes 116 are all located on the first plate 111, that is, the plurality of through holes 116 are arranged at intervals, and the plurality of through holes 116 penetrate through the first outer surface 1116 and the first inner surface 1114 of the first plate 111. The plurality of grooves 114 are distributed on the first plate 111, the second plate 113 and the third plate 115. Specifically, the plurality of grooves 114 are respectively arranged on the first outer surface 1116 of the first plate 111, the second outer surface 1136 of the second plate 113 and the first surface 1152 of the third plate 115. In other embodiments, the plurality of grooves 114 can also be arranged on the first inner surface 1114 of the first plate 111, the second inner surface 1134 of the second plate 113 and the second surface 1153 of the third plate 115. By providing the plurality of through holes 116 and the plurality of grooves 114 on the carrier 11, the weight of the carrier 11 can be reduced and the material cost can be saved, thereby ultimately reducing the weight of the device including the carrier 11.

[0044] The carrier 11 is further provided with a plurality of avoidance grooves 121, and the plurality of avoidance grooves 121 are respectively arranged on the first outer surface 1116 of the first plate 111 and the second outer surface 1136 of the second plate 113. By providing the plurality of avoidance grooves 121, the weight of the carrier 11 can be reduced and the material cost can be saved, and other components can also be avoided, such as elastic fixing members.

[0045] Please refer to Figure 5 , the carrier 11 further includes a plurality of positioning holes 112. In this embodiment, the positioning holes 112 are arranged on the third plate 115, and the positioning holes 112 penetrate from the first surface 1152 to the second surface 1153. The number of the positioning holes 112 can be 1, 2, 3, etc. The connection line between the centers of two or more positioning holes 112 can be parallel to the intersection line of the first surface 1152 and the first side surface 1154. In other embodiments, the positioning holes 112 can also be arranged on the first plate 111 or the second plate 113. By providing the positioning holes 112 on the carrier 11, during the manufacturing of the carrier 11, it can be cooperatively positioned with the fixture on the processing machine for processing the carrier 11, which is more conducive to the manufacturing and mass production of the carrier 11.

[0046] Please refer to Figure 6, the optical element fixing assembly 10 further includes a plurality of elastic fixing members 17. The plurality of elastic fixing members 17 are disposed on the first outer surface 1116, the second outer surface 1136, the first side surface 1154, and the second side surface 1156. Specifically, the elastic fixing member 17 includes a fixing portion 171 and a bending portion 173. Both the fixing portion 171 and the bending portion 173 can be sheet-like structures. The fixing portion 171 is provided with three holes (not labeled) arranged in parallel. The middle hole can be matched with the hole on the carrier 11 through a screw, and the other two holes on both sides of the middle hole are matched with two protruding posts on the carrier 11 to fix the fixing portion 171 on the carrier 11. The bending portion 173 and the fixing portion 171 are connected at an acute angle, so that the bending portion 173 can be elastically connected to the fixing portion 171. The plurality of elastic fixing members 17 are fixedly disposed on the first outer surface 1116, the second outer surface 1136, the first side surface 1154, and the second side surface 1156 through their respective fixing portions 171.

[0047] The number and positions of the elastic fixing members 17 correspond one-to-one to those of the first positioning step 117 and the second positioning step 118. The plurality of elastic fixing members 17 are respectively adjacent to the first positioning step 117 and the second positioning step 118, so that the bending portions 173 of the plurality of elastic fixing members 17 respectively correspond to the surface positions of the first positioning step 117 and the second positioning step 118, that is, the projections of the bending portions 173 toward the third plate 115 respectively fall into the corresponding first positioning step 117 and second positioning step 118. Moreover, the positions where the bending portions 173 of the plurality of elastic fixing members 17 respectively press on the corresponding first optical element 13 are symmetric about the center of the first optical element 13 to ensure the flatness of the first optical element 13 fixed on the carrier. At the same time, the positions where the bending portions 173 of the plurality of elastic fixing members 17 respectively press on the corresponding second optical element 15 are also symmetric about the center of the second optical element 15 to ensure the flatness of the second optical element 15 fixed on the carrier. The material of the elastic fixing member 17 can be metal.

[0048] Please continue to refer to Figure 6 , in this embodiment, the first optical element 13 is attached to the three first positioning steps 117, and through the limiting effect of the first limiting portion 119 and the fixing effect of the elastic fixing member 17 installed corresponding to the first positioning step 117, the first optical element 13 is fixed to the carrier 11, thereby achieving the purpose of firmly and reliably fixing the second optical element 15. The second optical element 15 is attached to the three second positioning steps 118, providing a planar support for the second optical element 15, and through the limiting effect of the second limiting portion 120 and the fixing effect of the elastic fixing member 17 installed corresponding to the second positioning step 118, the second optical element 15 is fixed to the third plate 115 of the carrier 11, thereby achieving the purpose of firmly and reliably fixing the second optical element 15.

[0049] The carrier 11 further includes a fixing step 110. In this embodiment, the fixing step 110 protrudes from the second outer surface 1136. In other embodiments, it may also be other surfaces of the carrier 11. The fixing step 110 is fixedly connected to other components, such as the housing of the light source system, so that the carrier 11 can be installed inside the light source system. The fixing method can be bonding, screwing, snap connection, etc.

[0050] Please refer to Figure 3 , the following takes a specific example to illustrate the processing process of the above-mentioned carrier 11 provided in this embodiment. First, a carrier 11 in a blank form can be formed by die casting, that is, the carrier is an integrally formed structure. Operations such as rounding the edges of the carrier 11 are performed to increase the strength of the edges of the carrier 11; then, operations such as milling or polishing are performed on the second surface 1153 of the third plate 115 to make the second surface 1153 an approximate plane; and the second surface 1153 is used as a processing positioning surface to process the first plate 111 to form the first end surface 1112 and the first limiting portion 119 on the first end surface 1112, and a plurality of first positioning steps 117 are processed. The second plate 113 is processed to form the second end surface 1132 and the first limiting portion 119 on the second end surface 1132, and a plurality of first positioning steps 117 are processed. Then, continuing to use the second surface 1153 as the processing positioning surface, the third plate 115 is processed to form the first surface 1152, three second positioning steps 118 and a plurality of second limiting portions 120. Thus, a finished product of the carrier 11 is formed.

[0051] Please refer to Figure 7 , this embodiment also provides a light source system 100. The light source system 100 includes the optical element fixing assembly 10 in any of the above embodiments or embodiments. The light source system 100 further includes a housing 20. The optical element fixing assembly 10 is received in the housing 20. Specifically, the optical element fixing assembly 10 can be fixed to the inner wall of the housing 20 by means such as screwing. The optical fixing assembly 10, as an independent component, is convenient for pre-manufacturing assembly and post-maintenance.

[0052] The light source system 100 further includes at least other structures such as a lens 30, a main board, and an optical engine. The structures and connection relationships of other components such as the lens 30, the main board, and the optical engine can refer to the prior art.

[0053] The light source system 100 provided in this embodiment includes an optical element fixing assembly 10. By setting the carrier 11 as an integral structure, it has a simple structure, is easy to process, has a low cost, enables the mass production of the carrier 11, can ensure the parallel accuracy, is convenient for installation, and fixes the first optical element 13 and the second optical element 15 on the carrier 11, capable of achieving a firm and reliable fixation. By arranging the second optical element 15 parallel to the first optical element 13, the area of the emitted light spot is reduced, thus achieving the effect of energy concentration and improving the light efficiency.

[0054] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. An optical element fixing assembly, characterized in that, For a light source system, the light source system includes a housing, and the optical element fixing assembly is fixed to the housing. The optical element fixing assembly includes: A carrier, the carrier is an integral structure. The carrier includes a first plate, a second plate and a third plate. The first plate and the second plate are parallel, and the third plate is disposed between the first plate and the second plate. The first plate and the second plate are symmetric about the central axis of the third plate; A first optical element, the first optical element is fixed to the carrier, and the first optical element is fixed between the first plate and the second plate; A second optical element, the second optical element is fixed between the first plate and the second plate and is parallel to the first optical element, so that the incident light forms parallel outgoing light after acting on the second optical element and the first optical element. Wherein, the incident light is incident on the first optical element and the second optical element at the same time. A part of the incident light forms partial outgoing light after being reflected by the second optical element and the first optical element in sequence, and another part of the incident light directly passes through the first optical element and converges with the partial outgoing light to form the outgoing light; The carrier includes three first positioning steps, and at least one first positioning step is provided on both the first plate and the second plate. The first optical element is attached to the three first positioning steps; The optical element fixing assembly further includes a plurality of elastic fixing members. The plurality of elastic fixing members are disposed on the first plate and the second plate. The elastic fixing member includes a fixing portion and a bending portion connected at an acute angle. The fixing portion is fixed to the carrier, and the projection of the bending portion towards the third plate falls within the first positioning step.

2. The optical element fixing assembly according to claim 1, characterized in that, The elastic fixing member corresponds to the number and position of the first positioning steps one by one.

3. The optical element fixing assembly according to claim 1, characterized in that, The carrier further includes three second positioning steps. The three second positioning steps are disposed on the third plate, and the second optical element is attached to the three second positioning steps.

4. The optical element fixing assembly according to claim 3, characterized in that, The optical element fixing assembly further includes a plurality of elastic fixing members. The plurality of elastic fixing members are disposed on the third plate. The elastic fixing member includes a fixing portion and a bending portion connected at an acute angle. The fixing portion is fixed to the carrier, and the projection of the bending portion towards the third plate falls within the second positioning step.

5. The optical element fixing assembly according to claim 4, wherein, The elastic fixing member corresponds to the number and position of the second positioning steps one by one.

6. The optical element fixing assembly according to claim 1, wherein, The carrier further includes a plurality of first limiting portions and second limiting portions. The plurality of first limiting portions are disposed on the edges of the first plate and the second plate to limit the first optical element; the plurality of second limiting portions are disposed on the edges of the third plate to limit the second optical element.

7. A light source system, characterized in that, Including the optical element fixing assembly according to any one of claims 1-6, the light source system further includes a housing, and the optical element fixing assembly is received in the housing.

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