Lens fixing module and lens device

Abstract

The embodiment of the present application provides a lens fixing module, which comprises a mounting shell and a double-layer structure lens pressing plate. The mounting shell comprises a lens mounting step and a lens pressing plate fixing surface. The double-layer structure lens pressing plate is suitable to be mounted on the lens pressing plate fixing surface, and the double-layer structure lens pressing plate comprises a plurality of elastic pressing members which are suitable to press against the lens mounted on the lens mounting step. The lens fixing module provided by the present application comprises the mounting shell and the double-layer structure lens pressing plate, the mounting shell comprises the lens mounting step and the lens pressing plate fixing surface, the double-layer structure lens pressing plate is suitable to be mounted on the lens pressing plate fixing surface, and the double-layer structure lens pressing plate comprises the plurality of elastic pressing members which are suitable to press against the lens mounted on the lens mounting step. The lens fixing module provided by the present application can realize the elastic locking of the lens and the miniaturization of the lens fixing module. The embodiment of the present application further provides a lens device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lens fixing, in particular to a lens fixing module and a lens device. BACKGROUND

[0002] With the continuous development and update of optical technology, the types and shapes of lenses in optical products, especially precision optical products, are increasingly diversified. The curvature, thickness of different optical lenses, and the matching between different lenses put higher requirements on the fixing structure, especially for products with limited space for fixing structure. The existing lens fixing structure is either large in size or difficult to achieve reliable fixing, which is difficult to meet the production demand. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a lens fixing module and a lens device to solve the above problems. The embodiments of the present application achieve the above purpose through the following technical solutions.

[0004] In a first aspect, the embodiments of the present application provide a lens fixing module, comprising a mounting shell and a double-layer structure pressing plate. The mounting shell comprises a lens mounting step and a pressing plate fixing surface. The double-layer structure pressing plate is suitable for being mounted on the pressing plate fixing surface, and the double-layer structure pressing plate comprises a plurality of elastic pressing pieces, which are suitable for pressing the lens mounted on the lens mounting step.

[0005] In an embodiment, the double-layer structure pressing plate comprises a first pressing plate and a second pressing plate, the first pressing plate is mounted on the pressing plate fixing surface, the second pressing plate is suitable for being stacked on the first pressing plate, and the plurality of elastic pressing pieces are connected to one of the first pressing plate and the second pressing plate.

[0006] In an embodiment, the first pressing plate is provided with a first opening, the second pressing plate is provided with a second opening, the second opening is in communication with the first opening, and the plurality of elastic pressing pieces are connected to the second pressing plate and located in the second opening.

[0007] In an embodiment, the first pressing plate is provided with a first opening, the second pressing plate is provided with a second opening, the second opening is in communication with the first opening, and the plurality of elastic pressing pieces are connected to the first pressing plate and pass through the first opening. The plurality of elastic pressing pieces are also suitable for abutting against the second pressing plate.

[0008] In an embodiment, the size of the second opening is smaller than the size of the first opening.

[0009] In an embodiment, the mounting shell comprises a first positioning part, and the first positioning part is arranged on the pressing plate fixing surface. The double-layer structure pressing plate comprises a second positioning part, and the second positioning part is suitable for cooperating with the first positioning part.

[0010] In an embodiment, the first positioning part is a positioning column, and the second positioning part is a positioning hole. The positioning column is suitable for being arranged in the positioning hole.

[0011] In one embodiment, the first positioning part is a positioning groove, the tablet fixing surface is exposed to the positioning groove, and the second positioning part is a positioning tab, which is adapted to be installed in the positioning groove.

[0012] In one embodiment, the mounting housing is provided with a lens mounting step, the mounting housing has an inner surface, the inner surface is connected between the tablet fixing surface and the lens mounting step, and the mounting housing is provided with a pressing member clearance groove.

[0013] In one embodiment, each elastic pressing member has a pressing arc surface, and the plurality of elastic pressing members press the lens through the corresponding pressing arc surfaces.

[0014] In one embodiment, the lens mounting step includes a first lens mounting step and a second lens mounting step, which are annularly distributed along the inner surface of the mounting housing, the tablet fixing surface surrounds the first lens mounting step, the mounting housing further includes a tablet mounting surface, the tablet mounting surface surrounds the second lens mounting step, and the lens fixing module further includes a third tablet, which is fixed to the tablet mounting surface to press against the lens mounted on the second lens mounting step.

[0015] In a second aspect, the embodiments of the present application further provide a lens device, which includes a lens and any of the lens fixing modules described above, the lens is mounted on the lens mounting step, the double-layer structure tablet is mounted on the tablet fixing surface, and the elastic pressing member presses the lens.

[0016] In one embodiment, the lens includes a first lens and a second lens, the second lens is stacked on the first lens, the second lens and the first lens have an edge overlap part after being stacked, and the elastic pressing member presses the edge overlap part.

[0017] In one embodiment, the double-layer structure tablet presses the first lens.

[0018] In one embodiment, the lens further includes a third lens, the third lens is mounted on the mounting housing and located on a side of the first lens away from the second lens, and the lens fixing module further includes a third tablet, which is fixed to the mounting housing and adapted to press against the third lens.

[0019] Compared with the prior art, the lens fixing module and the lens device provided by the present application, the lens fixing module includes a mounting housing and a double-layer structure tablet, the mounting housing includes a lens mounting step and a tablet fixing surface, the double-layer structure tablet is adapted to be mounted on the tablet fixing surface, the double-layer structure tablet includes a plurality of elastic pressing members, the plurality of elastic pressing members are adapted to press the lens mounted on the lens mounting step, the lens mounted on the lens mounting step is pressed by the elastic pressing members, the elastic locking of the lens is achieved, and the miniaturization of the lens fixing module is also achieved, thereby realizing the miniaturization of the lens device.

[0020] These and other aspects of the application will be more readily appreciated as the same becomes better understood by reference to the following detailed description and considered in connection with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 is a structure schematic diagram of the lens fixing module provided by the first embodiment of the present application in one view.

[0023] Figure 2 is a structure schematic diagram of the lens fixing module provided by the first embodiment of the present application in another view.

[0024] Figure 3 is Figure 2 is a sectional view along the direction of A-A.

[0025] Figure 4 is a structure schematic diagram of the lens device provided by the first embodiment of the present application.

[0026] Figure 5 is a structure schematic diagram of the first lens and the second lens provided by the first embodiment of the present application.

[0027] Figure 6 is a structure schematic diagram of the lens device provided by the second embodiment of the present application in one view.

[0028] Figure 7 is a structure schematic diagram of the mounting shell provided by the second embodiment of the present application.

[0029] Figure 8 is a structure schematic diagram of the lens device provided by the second embodiment of the present application in another view.

[0030] Figure 9 is Figure 8 is a sectional view along the direction of B-B. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the embodiments of the present application, the following will make a more comprehensive description of the embodiments of the present application with reference to the related drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more clear and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0033] First embodiment

[0034] Referring to Figure 1 , the embodiment of the present application provides a lens fixing module 10, which comprises a mounting shell 11 and a double-layer structure lens pressing plate 13, the mounting shell 11 can be used for mounting a lens, and the double-layer structure lens pressing plate 13 is mounted on the mounting shell 11 to fix the lens in the mounting shell 11.

[0035] In the embodiment, the mounting shell 11 comprises an integral connecting plate 111 and a lens mounting sleeve 113, wherein the lens mounting sleeve 113 can be used for mounting a lens and the double-layer structure lens pressing plate 13, and the connecting plate 111 is connected to one end of the lens mounting sleeve 113 and protrudes from the lens mounting sleeve 113 in the circumferential direction. Specifically, the connecting plate 111 is connected to the lower end of the lens mounting sleeve 113, that is, the connecting plate 111 is connected to the side of the lens mounting sleeve 113 away from the double-layer structure lens pressing plate. In other embodiments, the connecting plate 111 can also be connected to the lens mounting sleeve 113 by bonding or clamping, etc. The connecting plate 111 can be used to connect with the optical equipment shell to achieve fixed installation of the lens fixing module 10. In the embodiment, the connecting plate 111 can be fixedly installed on the optical equipment shell by screwing. In other embodiments, the installation mode can also be bonding or other fixing modes.

[0036] Referring to Figure 1 , Figure 2 and Figure 3 , the lens mounting sleeve 113 comprises a ring wall 1112 and a central through hole 1114, the ring wall 1112 is connected to the connecting plate 111, and the central through hole 1114 is surrounded by the ring wall 1112.

[0037] The lens mounting sleeve 113 further comprises a lens mounting step 1130 and a lens pressing plate fixing surface 1133, wherein the lens mounting step 1130 is arranged in the central through hole 1114 and can be used for mounting a lens; and the lens pressing plate fixing surface 1133 surrounds the lens mounting step 1130, and the lens pressing plate fixing surface 1133 is arranged at one end of the ring wall 1112 away from the connecting plate 111 and can be used for mounting the double-layer structure lens pressing plate 13. The lens pressing plate fixing surface 1133 can be provided with a plurality of threaded holes 1135, and the double-layer structure lens pressing plate 13 is fixed by penetrating the threaded holes 1135 of the ring wall 1112 with fasteners such as bolts and screws.

[0038] The lens mounting step 1130 includes a first lens mounting step 1131 and a second lens mounting step 1132 annularly distributed along the inner surface of the mounting shell 11, wherein the first lens mounting step 1131 is surrounded by the lens fixing surface 1133, and the second lens mounting step 1132 is located between the first lens mounting step 1131 and the connecting plate 111. In the embodiment, the first lens mounting step 1131 and the second lens mounting step 1132 are both annular steps provided on the inner surface of the mounting shell 11. In other embodiments, at least one of the first lens mounting step 1131 and the second lens mounting step 1132 can be composed of multiple spaced steps. A light-transmitting hole can also be provided between the first lens mounting step 1131 and the second lens mounting step 1132, so that the first lens mounting step 1131 and the second lens mounting step 1132 are in communication with each other, so that the light incident on the first lens mounting step 1131 can propagate to the second lens mounting step 1132, or the light incident on the second lens mounting step 1132 can propagate to the first lens mounting step 1131.

[0039] In the embodiment, the lens mounting sleeve 113 further includes a lens mounting surface 1134, which is located at opposite ends of the annular wall 1112 with the lens fixing surface 1133, and is located between the lens fixing surface 1133 and the connecting plate 111. The lens mounting surface 1134 surrounds the second lens mounting step 1132, and can be used for the mounting of the lens.

[0040] The mounting shell 11 includes a first positioning part 115 provided on the lens fixing surface 1133, which can be used for positioning the double-layer structure lens 13, so as to facilitate the subsequent quick and accurate mounting of the double-layer structure lens 13.

[0041] In the embodiment, the first positioning part 115 is a positioning column, which protrudes from the annular wall 1112 in a direction away from the connecting plate 111. In the embodiment, the number of the first positioning part 115 is two, which are distributed along the radial direction of the central through hole 1114, so as to achieve quick and accurate positioning of the double-layer structure lens 13. Compared with a single first positioning part 115, the double-layer structure lens 13 can be positioned by two first positioning parts 115, which can avoid rotation of the double-layer structure lens 13, and the positioning effect is better. In other embodiments, the number of the first positioning part 115 can also be three or four.

[0042] The mounting housing 11 is further provided with a mounting groove 1116, which penetrates the connecting plate 111 and is arranged on the side of the lens mounting sleeve 113 away from the lens fixing surface 1133. The lens mounting surface 1134 is the bottom surface of the mounting groove 1116, so that the user can mount the lens on the lens mounting surface 1134 through the mounting groove 1116. Since the lens mounting surface 1134 surrounds the second lens mounting step 1132, the second lens mounting step 1132 can be exposed to the mounting groove 1116, facilitating the mounting of the lens on the second lens mounting step 1132. In the embodiment, the mounting groove 1116 is a circular groove to facilitate the mounting of a circular lens. In other embodiments, the mounting groove 1116 can also be of other shapes to adapt to the lens.

[0043] Please continue to refer to Figure 1 、 Figure 2 and Figure 3 In the embodiment, the double-layer structure lens 13 is substantially a hollow waist-shaped structure. The double-layer structure lens 13 includes a second positioning part 132 adapted to cooperate with the first positioning part 115 to achieve rapid and accurate positioning of the double-layer structure lens 13. In the embodiment, the second positioning part 132 is a positioning hole adapted to be penetrated by the positioning column. By sleeving the second positioning part 132 on the first positioning part 115, the positioning of the double-layer structure lens 13 can be achieved. The number of the second positioning part 132 is also two, and corresponds to the positions of the two first positioning parts 115, so as to position the double-layer structure lens 13 before mounting it on the lens fixing surface 1133, facilitate the subsequent fixing of the double-layer structure lens 13, and improve the mounting efficiency of the double-layer structure lens 13. In other embodiments, when the number of the first positioning part 115 is three or four, the number of the second positioning part 132 can also be the same.

[0044] The double-layer structure lens 13 is adapted to be mounted on the lens fixing surface 1133. In the embodiment, the double-layer structure lens 13 can be provided with a plurality of through holes 133, which can correspond one-to-one with the plurality of threaded holes 1135, so as to facilitate the penetration of the screw. That is, the screw can penetrate the through hole 133 and be threadedly connected with the threaded hole 1135, so as to fix the double-layer structure lens 13 on the lens fixing surface 1133. In other embodiments, the double-layer structure lens 13 can also be mounted on the lens fixing surface 1133 by adhesion.

[0045] The double-layered structure pressing plate 13 comprises a plurality of elastic pressing members 134 adapted to press against the lens mounted on the lens mounting step 1130. In the embodiment, the number of the elastic pressing members 134 is four, which are respectively arranged at the four corners of the double-layered structure pressing plate 13. In other embodiments, the number of the elastic pressing members 134 can also be three, five or more. In the embodiment, each elastic pressing member 134 has a pressing arc surface 1341 formed by bending the elastic pressing member 134 in a direction away from the lens, and the plurality of elastic pressing members 134 press against the lens through the corresponding pressing arc surfaces 1341, so that the stress points of the elastic pressing members 134 are located on the pressing arc surfaces 1341, avoiding the use of uneven end portions of the elastic pressing members 134 to press against the lens, and the linear contact between the pressing arc surfaces 1341 and the lens helps to increase the stress area with the lens compared with the point contact mode, and the pressing arc surfaces 1341 are smoothly transitioned, so that the elastic pressing members 134 will not scratch the lens surface or crack the lens when pressing against the lens. In some other embodiments, a rubber layer or a silica gel layer can also be arranged on the elastic pressing members 134, which can also avoid scratching or cracking the lens.

[0046] The double-layered structure pressing plate 13 comprises a first pressing plate 136 and a second pressing plate 138, wherein the first pressing plate 136 is mounted on the pressing plate fixing surface 1133, and the second pressing plate 138 is adapted to be stacked on the first pressing plate 136. The plurality of through holes 133 and the second positioning portion 132 can be simultaneously located on the first pressing plate 136 and the second pressing plate 138, that is, the first pressing plate 136 and the second pressing plate 138 can share the first positioning portion 115 and the threaded hole 1135, facilitating the installation of the first pressing plate 136 and the second pressing plate 138, and facilitating the processing of the through holes 133 and the second positioning portion 132, thereby saving installation time and part processing cost. One of the first pressing plate 136 and the second pressing plate 138 is connected with the plurality of elastic pressing members 134.

[0047] The first pressing plate 136 is substantially in a hollow waist-shaped plate structure, and is provided with a first opening 1361 which can be adapted to the shape and size of the lens, so that the lens can be precisely positioned in the first opening 1361, wherein the precise positioning refers to that the gap between the lens and the first pressing plate 136 is within 0.1 mm. That is, the first pressing plate 136 can limit the lens along the axial direction perpendicular to the mounting shell 11. In the embodiment, in order to adapt to the square lens, the first opening 1361 is substantially a square opening. In other embodiments, when the lens is circular, elliptical or triangular, the shape of the first opening 1361 can also be circular, elliptical or triangular. The first pressing plate 136 also has the effect of an aperture, so that the light on the lens passing through the lens mounting step 1130 will not all come out, achieving the shaping of the exit light spot.

[0048] The second pressure plate 138 has a second opening 1381, which communicates with the first opening 1361. This allows light incident on the lens mounted on the lens mounting step 1130 to continue propagating through both the first opening 1361 and the second opening 1381. In other words, the double-layer pressure plate 13 does not obstruct light propagation. Similar to the first pressure plate 136, the second pressure plate 138 also has an aperture effect. In this embodiment, the second opening 1381 and the first opening 1361 have the same shape, and the size of the second opening 1381 is larger than that of the first opening 1361. In other embodiments, the second opening 1381 and the first opening 1361 can be the same size, allowing the second opening 1381 to also limit the movement of the lens.

[0049] exist Figures 1 to 4 In one embodiment, multiple elastic pressing members 134 are connected to the second pressing plate 138 and located within the second opening 1381. There are four elastic pressing members 134, positioned at the four corners of the second opening 1381, pressing against the four corners of the square lens to achieve uniform pressure on the lens. This ensures that the external force acting on the square lens is evenly distributed across the lens, preventing excessive local pressure that could lead to lens breakage. In other embodiments, when the lens is triangular, the second opening 1381 can also be triangular, and there can be three elastic pressing members 134, positioned at the three corners of the triangular lens, similarly achieving uniform pressure on the lens. The second pressing plate 138, through the multiple elastic pressing members 134, presses against the lens, thus fixing the lens in place.

[0050] The lens fixing module 10 provided in this embodiment includes a double-layer pressure plate 13, which includes a first pressure plate 136 and a second pressure plate 138. The second pressure plate 138 is stacked on top of the first pressure plate 136 to prevent the first pressure plate 136 from arching and to greatly reduce the thickness of the double-layer pressure plate 13, thus achieving miniaturization of the lens fixing module 10. The first pressure plate 136 limits the position of the lens, and the second pressure plate 138 presses and fixes the lens through multiple elastic pressing members 134, enabling quick and convenient lens installation.

[0051] In this embodiment, the lens fixing module 10 further includes a third pressure plate 15, which is fixed to the mounting housing 11. The fixing method can be either by screwing the third pressure plate 15 to the mounting housing 11 or by bonding the third pressure plate 15 to the mounting housing 11. Specifically, the user can fix the third pressure plate 15 to the pressure plate mounting surface 1134 using the mounting groove 1116 to press against the lens mounted on the second lens mounting step 1132, thereby fixing the lens to the second lens mounting step 1132.

[0052] In the embodiment, the third pressing plate 15 is substantially annular, and is adapted to the circular installing groove 1116. The outer diameter of the third pressing plate 15 is smaller than the inner diameter of the installing groove 1116, so that the third pressing plate 15 is easily put in.

[0053] The third pressing plate 15 comprises an annular body 151 and a protruding part 153, wherein the protruding part 153 protrudes from the inner diameter of the annular body 151. The annular body 151 can be locked to the pressing plate installing surface 1134 by screws, and the protruding part 153 can be used to press against the lens installed on the second lens installing step 1132. In the embodiment, the annular body 151 is substantially annular plate structure, and the protruding part 153 is substantially rectangular plate structure. In other embodiments, the protruding part 153 can also be similar to the elastic pressing part 134, and the structure can meet the pressing against the lens, which is not limited here.

[0054] In summary, the lens fixing module 10 provided by the application comprises the installing shell 11 and the double-layer structure pressing plate 13. The installing shell 11 comprises the lens installing step 1130 and the pressing plate fixing surface 1133. The double-layer structure pressing plate 13 is adapted to be installed on the pressing plate fixing surface 1133. The double-layer structure pressing plate 13 comprises the first pressing plate 136 and the second pressing plate 138. The second pressing plate 138 is stacked on the first pressing plate 136, which can greatly reduce the thickness of the double-layer structure pressing plate 13, and realize the miniaturization of the lens fixing module 10. The lens is limited by the first pressing plate 136. The plurality of elastic pressing parts 134 are connected to the second pressing plate 138 and are adapted to press against the lens installed on the lens installing step 1130. The elastic locking of the lens is realized, and the lens is also limited. The structure of the lens fixing module 10 can well meet the market requirements, and improve the competitiveness of the product.

[0055] Please refer to Figure 1 and Figure 4 The embodiment of the application further provides a lens device 1, which comprises the lens 20 and the lens fixing module 10. The lens 20 is installed on the lens installing step 1130. The double-layer structure pressing plate 13 is installed on the pressing plate fixing surface 1133. The elastic pressing part 134 presses against the lens 20, so as to fix the lens 20 on the lens installing step 1130.

[0056] Please refer to Figure 1 and Figure 5 The lens 20 comprises the first lens 21 and the second lens 22. The first lens 21 is connected to the lens installing step 1130. The second lens 22 is stacked on the first lens 21. The plurality of elastic pressing parts 134 press against the second lens 22, so as to fix the first lens 21 and the second lens 22 on the lens installing step 1130.

[0057] In the embodiment, the second lens 22 and the first lens 21 have an edge overlap portion 221 after being stacked, the elastic pressing member 134 presses against the edge overlap portion 221, and the first lens 21 can support the edge overlap portion 221 of the second lens 22, thereby avoiding cracking of the second lens 22 while ensuring sufficient pressing force.

[0058] In the embodiment, the first lens 21 is a double-concave lens, the double-concave lens includes opposite first and second support planes 212 and 214, the first support plane 212 is mounted on the lens mounting step 1130, and the first and second support planes 212 and 214 are annular support planes, i.e., the annular first support plane 212 is in contact with the lens mounting step 1130. The second lens 22 is a square diffusion sheet, and the first pressing piece 136 can limit the second lens 22 along an axis perpendicular to the mounting housing 11. The second lens 22 is stacked on the second lens support plane 214, i.e., the annular second support plane 214 is in contact with the second lens 22, and the outer edge of the second lens 22 is inscribed in the outer edge of the annular support plane (the second support plane 214). The outer edge of the second lens 22 is inscribed in the outer edge of the annular support plane, which not only maximizes the area of the edge overlap portion 221, but also reduces the pressure on the diffusion sheet under the same force of the elastic pressing member 134, thereby preventing the diffusion sheet from being crushed. Compared with the case where the outer edge of the second lens 22 extends beyond the outer edge of the annular support plane, the area of the diffusion sheet can be saved, and the cost can be reduced. The elastic pressing member 134 presses against the edge overlap portion 221 of the second lens 22, i.e., the elastic pressing member 134 presses against the four corners of the square diffusion sheet. It should be noted that, in the embodiment, the first pressing piece 136 also presses against the second support plane 214, i.e., the first pressing piece 136 presses against the first lens 21 to compress the first lens 21 in addition to positioning the second lens 22. The second pressing piece 138 is stacked on the first pressing piece 136, which can prevent the first pressing piece 136 from arching, further compresses the first lens 21, and fixes the first lens 21 and the second lens 22 to the lens mounting step 1130 by the plurality of elastic pressing members 134.

[0059] Please refer to Figure 3 and Figure 4 In the embodiment, the lens 20 further includes a third lens 23 mounted on the second lens mounting step 1132 and located on the side of the first lens 21 away from the second lens 22. The third lens 23 is pressed by the protruding portion 153, so that the third lens 23 can be fixedly mounted on the second lens mounting step 1132. In the embodiment, the third lens 23 is a double-convex lens. In other embodiments, the third lens 23 can also be a concave lens.

[0060] The lens device 1 provided by the application can be applied to stage light beam lamps, searchlights, rescue lights and the like.

[0061] In conclusion, the lens device 1 provided by the application comprises a lens 20 and a lens fixing module 10, the lens fixing module 10 comprises a mounting shell 11 and a double-layer structure pressing piece 13, the mounting shell 11 comprises a lens mounting step 1130 and a pressing piece fixing surface 1133, the lens 20 is mounted on the lens mounting step 1130, the double-layer structure pressing piece 13 is mounted on the pressing piece fixing surface 1133, the double-layer structure pressing piece 13 comprises a first pressing piece 136 and a second pressing piece 138, the second pressing piece 138 is stacked on the first pressing piece 136, which prevents the first pressing piece 136 from arching and greatly reduces the thickness of the double-layer structure pressing piece 13, thereby realizing the miniaturization of the lens fixing module 10 and the lens device 1. In addition, the first pressing piece 136 and the second pressing piece 138 also have the effect of an aperture, which realizes the shaping of the outgoing light spot. The lens 20 is limited by the first pressing piece 136, and the lens is pressed and fixed by the plurality of elastic pressing pieces 134 of the second pressing piece 138, which realizes the elastic locking of the lens 20 and also realizes the limiting of the lens 20. The lens can be quickly and conveniently installed, so that the lens device 1 can well meet the market requirements and improve the competitiveness of the product.

[0062] Second embodiment

[0063] Please refer to Figure 6 The embodiment provides a lens fixing module 30 and a lens device 3, the lens device 3 comprises the lens fixing module 30 and a lens 40.

[0064] Please refer to Figure 6 and Figure 7 Different from the first embodiment, the connecting plate 311 is connected to the upper end of the lens mounting sleeve 3113, that is, the connecting plate 311 and the double-layer structure pressing piece 33 are connected to the same side of the lens mounting sleeve 313, and the lens mounting sleeve 313 is provided with a lens mounting step 3131.

[0065] The pressing piece fixing surface 3133 is recessed in the connecting plate 311 and can be used for supporting the double-layer structure pressing piece 33. In the embodiment, the pressing piece fixing surface 3133 is composed of four parts surrounding the center through hole 3114, and the heights of the parts are equal to form a flat surface, which is beneficial to fixing the double-layer structure pressing piece 33.

[0066] In the embodiment, the first positioning part 315 is a positioning groove, which is arranged on the connecting plate 311 and communicates with the center through hole 3114. The pressing piece fixing surface 3133 is the bottom surface of the positioning groove, that is, the pressing piece fixing surface 3133 is exposed to the positioning groove. In the embodiment, the first positioning part 315 is composed of four parts surrounding the center through hole 3114.

[0067] Please refer to Figure 7 、 Figure 8 and Figure 9 , the mounting shell 31 has an inner surface 317 arranged around the center through hole 3114. The inner surface 317 is connected between the tablet fixing surface 3133 and the lens mounting step 3131, and is provided with a pressing piece avoidance groove 3171 which penetrates the tablet fixing surface 3133, that is, the pressing piece avoidance groove 3171 is radially recessed from the inner surface 317 to the center through hole 3114. The pressing piece avoidance groove 3171 can be used to avoid the elastic pressing piece 334. Specifically, the elastic pressing piece 334 will move to the pressing piece avoidance groove 3171 when pressing the lens 40, that is, by providing the pressing piece avoidance groove 3171, the elastic pressing piece 334 will move to the pressing piece avoidance groove 3171 when pressing the lens 40, so that the elastic pressing piece 334 can avoid occupying too much light transmission space, reduce the interference of the elastic pressing piece 334 to the light transmission, and can fully guarantee the elastic deformation space of the elastic pressing piece 334, facilitate the deformation of the elastic pressing piece 334, and provide greater elastic force to better press the lens 40.

[0068] The second positioning part 332 is a positioning tab which is suitable for being installed in the positioning groove 3152. In the embodiment, the positioning tab is arranged on the first pressing piece 336 and the second pressing piece 338. The positioning tab of the first pressing piece 336 is composed of four parts around the center through hole 3114, and the positioning tab of the second pressing piece 338 is also composed of four parts around the center through hole 3114. By installing the second positioning part 332 in the positioning groove 3152, the fast and accurate positioning of the double-layer structure pressing piece 33 can be realized, so as to facilitate the subsequent fixing of the double-layer structure pressing piece 33.

[0069] In the embodiment, the plurality of elastic pressing pieces 334 are connected to the first pressing piece 336 and pass through the first opening 3361, and the plurality of elastic pressing pieces 334 are also suitable for abutting against the second pressing piece 338 to prevent the first pressing piece 336 from arching at the position connected to the elastic pressing piece 334 or other positions, enhance the rigidity of the elastic pressing piece 334, and thus improve the reliability of the lens 40 fixing.

[0070] In the embodiment, the size of the second opening 3381 is smaller than the size of the first opening 3361, that is, the second opening 3381 is tightened relative to the first opening 3361, so that the second pressing piece 338 can become a light blocking ring to block the stray light entering the lens 40 and prevent the stray light from interfering with the light transmission.

[0071] In summary, the lens fixing module 30 and the lens device 3 provided by the present application, the lens fixing module 30 comprises a mounting shell 31 and a double-layer structure pressing plate 33, the mounting shell 31 comprises a lens mounting step 3131 and a pressing plate fixing surface 3133, the double-layer structure pressing plate 33 is suitable to be installed on the pressing plate fixing surface 3133, the double-layer structure pressing plate 33 comprises a first pressing plate 336 and a second pressing plate 338, the second pressing plate 338 is superimposed on the first pressing plate 336, which can greatly reduce the thickness of the double-layer structure pressing plate 33, realize the miniaturization of the lens fixing module 30, and realize the miniaturization of the lens device 3. A plurality of elastic pressing members 334 are connected to the first pressing plate 336, and the plurality of elastic pressing members 334 are also suitable to abut against the second pressing plate 338, so as to prevent the first pressing plate 336 from arching at a position connected to the elastic pressing members 334 or other positions, enhance the rigidity of the elastic pressing members 334, and thus improve the reliability of the lens 40 fixation. The second pressing plate 338 can become a light barrier to shield stray light entering the lens 40, and the elastic pressing members 334 press against the lens 40 installed on the lens mounting step 3131, which realizes the elastic locking of the lens 40 and also realizes the shielding of stray light, so that the lens fixing module 30 and the lens device 3 can well meet the market requirements and improve the competitiveness of products.

[0072] The above-described embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as the limitation of the patent scope of the present application. It should be noted that, for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A lens fixing module, characterized in that, include: The mounting housing includes a lens mounting step and a pressure plate fixing surface; and A double-layer structure pressure plate, the double-layer structure pressure plate being adapted to be installed on the pressure plate fixing surface, the double-layer structure pressure plate including a plurality of elastic pressing members, the plurality of elastic pressing members being adapted to press against a lens installed on the lens mounting step; The mounting housing includes an integrally formed connecting plate and a lens mounting sleeve. The connecting plate is connected to one end of the lens mounting sleeve and protrudes circumferentially from the lens mounting sleeve. The lens mounting sleeve includes an annular wall and a central through hole. The annular wall is connected to the connecting plate, and the central through hole is formed by the annular wall. The mounting housing is provided with a lens mounting step. The mounting housing has an inner surface, which is connected between the pressing plate fixing surface and the lens mounting step, and is provided with a pressure relief groove. The pressure relief groove penetrates the pressing plate fixing surface and is radially recessed from the inner surface toward the central through hole.

2. The lens fixing module according to claim 1, characterized in that, The double-layer structure pressure plate includes a first pressure plate and a second pressure plate. The first pressure plate is mounted on the pressure plate fixing surface, and the second pressure plate is adapted to be stacked on the first pressure plate. A plurality of elastic pressing members are connected to one of the first pressure plate and the second pressure plate.

3. The lens fixing module according to claim 2, characterized in that, The first pressure plate has a first opening, the second pressure plate has a second opening, the second opening communicates with the first opening, and a plurality of elastic pressing members are connected to the second pressure plate and located in the second opening.

4. The lens fixing module according to claim 2, characterized in that, The first pressure plate has a first opening, the second pressure plate has a second opening, the second opening communicates with the first opening, a plurality of elastic pressing members are connected to the first pressure plate and pass through the first opening, and the plurality of elastic pressing members are also adapted to abut against the second pressure plate.

5. The lens fixing module according to claim 4, characterized in that, The size of the second opening is smaller than the size of the first opening.

6. The lens fixing module according to claim 1, characterized in that, The mounting housing includes a first positioning part disposed on the fixing surface of the pressure plate, and the double-layer pressure plate includes a second positioning part adapted to cooperate with the first positioning part.

7. The lens fixing module according to claim 6, characterized in that, The first positioning part is a positioning post, and the second positioning part is a positioning hole, wherein the positioning post is adapted to pass through the positioning hole.

8. The lens fixing module according to claim 6, characterized in that, The first positioning part is a positioning groove, and the pressing plate fixing surface is exposed in the positioning groove. The second positioning part is a positioning protrusion, and the positioning protrusion is adapted to be installed in the positioning groove.

9. The lens fixing module according to any one of claims 1-8, characterized in that, Each of the elastic pressing members has a pressing arc surface, and the plurality of elastic pressing members press against the lens through the corresponding pressing arc surface.

10. The lens fixing module according to any one of claims 1-8, characterized in that, The lens mounting steps include a first lens mounting step and a second lens mounting step that are circumferentially distributed along the inner surface of the mounting housing. The pressure plate fixing surface surrounds the first lens mounting step. The mounting housing also includes a pressure plate mounting surface that surrounds the second lens mounting step. The lens fixing module also includes a third pressure plate that is fixed to the pressure plate mounting surface to press against the lens mounted on the second lens mounting step.

11. A lens device, characterized in that, The device includes a lens and a lens fixing module as described in any one of claims 1-10, wherein the lens is mounted on the lens mounting step, the double-layer structure pressure plate is mounted on the pressure plate fixing surface, and the elastic pressing member presses against the lens.

12. The lens device according to claim 11, characterized in that, The lens includes a first lens and a second lens, the second lens being stacked on the first lens, and the second lens and the first lens having an overlapping edge after being stacked, and the elastic pressing member pressing against the overlapping edge.

13. The lens device according to claim 12, characterized in that, The double-layered pressure plate presses against the first lens.

14. The lens device according to claim 12, characterized in that, The lens also includes a third lens, which is mounted on the mounting housing and located on the side of the first lens away from the second lens. The lens fixing module also includes a third pressure plate, which is fixed to the mounting housing and adapted to press against the third lens.

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