Lens module for endoscope, array-type optical image module, optical image module, and method for manufacturing the same.

Abstract

To provide an array-type optical image module, an optical image module, and a method for manufacturing the array-type optical image module and the optical image module.SOLUTION: This method includes: providing a positioning pedestal having a plurality of lens barrel passages and alignment marks, inserting lenses into the passages, and fixing the lenses using an adhesive to form lens modules; providing a planar glass layer on another surface of the positioning pedestal, cutting the positioning pedestal on the basis of the alignment marks to form filling passages; injecting a light-shielding material into the filling passages and curing the light-shielding material to form an array-type optical image module; and finally cutting the light-shielding material along side walls of grooves and separating pedestal units to form a plurality of optical image modules for endoscope lenses. The method is manufactured in an array manner, enables formation, after cutting, of lens modules corresponding to a size of an image sensor, and enables formation of optical image modules having an image acquisition function by being coupled to the image sensor.SELECTED DRAWING: Figure 3A

Description

Technical Field

[0001] The present invention relates to the technical field of endoscope lenses, and in particular to an endoscope lens module, an array-type optical imaging module, an optical imaging module, and a method for manufacturing the same.

Summary of the Invention

Problems to be Solved by the Invention

[0002] Currently, all endoscope lenses used for endoscopes are developing towards miniaturization and microminiaturization. A conventional method directly uses an image acquisition lens module assembled in a lens barrel (Barrel) (hereinafter referred to as a barrel-type lens module), performs alignment by automatic alignment equipment on an image sensor printed on a substrate (PCB or FPC), and completes assembly. The machine adapts to the image sensor through a multi-axis adjustment mechanism, obtains an optimal test image by calibrating the image, then performs dispensing, thereby fixing and aligning the direction of the relative position between the lens module and the image sensor, and obtaining a complete image sensor module with an image acquisition lens; this is a conventional single-module method. However, in this method, the assembled barrel-type lens module is combined with the image sensor for assembly, which results in a large outer diameter of the obtained image sensor module. If an LED light source is added, the size of the front end of the final endoscope becomes too large, which cannot meet the demand for development towards microminiaturization.

[0003] Another method involves manufacturing using a reference wafer. This method directly uses wafer-level packaged image sensors (Wafer Level Package Sensors) and combines them with corresponding wafer-level lenses. Layer-by-layer alignment and bonding are performed on the image sensor wafer, and after completion, the wafer is cut to obtain the required image sensor module. Finally, a black or dark-colored material is applied around the image sensor module to shield against light rays, preventing stray light from entering the lens and affecting imaging quality. However, in the wafer-level lens package manufacturing process, automatic adjustment and alignment of the lens and image sensor cannot be achieved. Each wafer-level lens can only be aligned and bonded at the alignment point, and its position cannot be corrected or adjusted based on the imaging quality of the image sensor. This makes it difficult to control the image formation quality of each image sensor on the wafer, resulting in a loss of good product rates. Furthermore, damaged image sensors cannot be sorted out during the manufacturing process, or even if damage is known, the entire wafer lens package manufacturing process must continue, increasing overall costs and reducing the quality of the product. Moreover, once the optical specifications of the lens manufactured using this method (e.g., field of view, depth of field) are determined, users cannot adjust them during use, and it is impossible to meet the needs of different endoscopes. If a design change is necessary, the molding die used to design the wafer-level lens must be modified at enormous cost, and since it is more expensive than conventional barrel-type lenses, the manufacturing process for wafer-level lens packages is not only difficult to process, but the yield rate is low, and the overall cost and price are also high. [Means for solving the problem]

[0004] Accordingly, the present invention solves the problems of known methods by further providing a lens module for endoscope lenses, an array-type optical image module, an optical image module, and a method for manufacturing the same, in order to address the problems of the prior art described above.

[0005] In view of the above-mentioned problems, one of the objectives of the present invention is to provide a lens module, an array-type optical image module, an optical image module, and a method for manufacturing the same, which solve problems such as the size of known endoscope lenses being too large, the manufacturing process being complex, the cost being high, and the inability to flexibly adjust the optical specifications.

[0006] For the purposes described above, the present invention provides a method for manufacturing an endoscope lens module, and provides a positioning base, the positioning base having a first surface and a second surface facing each other vertically, and a plurality of lens barrel passages, the positioning base being provided with a plurality of alignment symbols, the plurality of lens barrel passages passing through the first surface and the second surface, defining a plurality of base units arranged in an array together with the plurality of alignment symbols, Within each base unit, the steps include placing multiple lenses in layers into their respective lens barrel passages, The steps include injecting adhesive between multiple lenses to bond them together, The steps include providing a flat glass layer on the second surface of the positioning base, The steps include cutting a positioning base along multiple alignment symbols to form multiple filling passages, The steps include injecting a light-shielding material into multiple filling passages and allowing it to harden so that the light-shielding material covers the periphery of multiple lens modules and avoids covering the surfaces of the multiple lens modules, The process includes the steps of forming a lens module by cutting a light-shielding material along the side wall of a filling passage, forming an optical barrier layer on the outer wall of each of the multiple lens barrel passages after cutting, and separating multiple base units.

[0007] In accordance with the above-mentioned objectives, the present invention provides a method for manufacturing an optical image module, and the method for manufacturing an optical image module is: The process involves providing a lens module, wherein the lens module is manufactured by the method for manufacturing the lens module of the endoscope described above, The method includes, after the step of injecting adhesive between the aforementioned multiple lenses to bond them together, or before or after the step of injecting light-shielding material into the cutting groove and curing it, providing an image sensor on one side of each of the multiple lenses, and having the other side of each image sensor facing away from the corresponding multiple lenses protrude and be adjacent to the first surface of the positioning base to form an array-type optical image module, and further including the step of cutting the light-shielding material along the side wall of the filling passage to assemble the multiple optical image modules.

[0008] In accordance with the above-mentioned objectives, the present invention further provides an optical image module, It includes one of a plurality of optical image modules manufactured by the optical image module manufacturing method described above.

[0009] In accordance with the above-mentioned objectives, the present invention further provides an array-type optical image module comprising a positioning base, a plurality of lens modules, a planar glass layer, an optical barrier layer, and an image sensor. The positioning base has a first and second surface facing each other vertically, a plurality of lens barrel passages, and a plurality of alignment symbols, the plurality of alignment symbols being provided on the first surface, the plurality of lens barrel passages penetrating the first and second surfaces, the plurality of lens barrel passages defining a plurality of base units arranged in an array along with the plurality of alignment symbols, and the positioning base is provided with a plurality of filling passages along the alignment symbols. Each lens module comprises a plurality of lenses, the plurality of lenses being provided in layers within the plurality of lens barrel passages, and adhesive being provided between the plurality of lenses. The planar glass layer is provided on the second surface of the positioning base. The optical barrier layer is provided within the plurality of filling passages and covers the outer wall of the lens barrel passage after cutting, while avoiding overlapping the surfaces of the plurality of lens modules. One side of each of the multiple image sensors is provided on one side of each of the multiple lens modules, and the other side of each of the multiple image sensors protrudes and is adjacent to the first surface of the base unit. [Effects of the Invention]

[0010] As described above, the lens module of the endoscope, the array-type optical image module, the optical image module, and the method for manufacturing the same of the present invention allow for the formation of a lens module corresponding to the size of the image sensor after cutting, using a lens module manufactured in an array manner (including a light-shielding material portion but not an image sensor), and this lens module can be further coupled to an image sensor to form an optical image module having an image acquisition function. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a flowchart of one embodiment of the method for manufacturing the lens module of this application. [Figure 2A] Figure 2A is a schematic diagram of step S1 in Figure 1. [Figure 2B] Figure 2B is a schematic diagram of step S2 in Figure 1. [Figure 2C] Figure 2C is a schematic diagram of step S3 in Figure 1. [Figure 2D] Figure 2D is a schematic diagram of step S3 in Figure 1. [Figure 2E] Figure 2E is a schematic diagram of step S3 in Figure 1. [Figure 2F] Figure 2F is a schematic diagram of step S3 in Figure 1. [Figure 2G] Figure 2G is a schematic diagram of step S4 in Figure 1. [Figure 2H] Figure 2H is a schematic diagram of step S5 in Figure 1. [Figure 2I] Figure 2I is a schematic diagram of step S6 in Figure 1. [Figure 2J] Figure 2J is a schematic diagram of step S7 in Figure 1. [Figure 3A] Figure 3A is a flowchart of the first embodiment of the method for manufacturing an optical image module according to the present invention. [Figure 3B] Figure 3B is a schematic diagram of step S17 in Figure 1. [Figure 3C] FIG. 3C is a schematic diagram of step S18 in FIG. 1. [Figure 4] FIG. 4 is a flowchart of a second embodiment of the method for manufacturing an optical image module of the present invention. [Figure 5A] FIG. 5A is a schematic diagram of steps S23 to S25 in FIG. 4. [Figure 5B] FIG. 5B is a schematic diagram of steps S23 to S25 in FIG. 4. [Figure 5C] FIG. 5C is a schematic diagram of step S26 in FIG. 4. [Figure 5D] FIG. 5D is a schematic diagram of step S27 in FIG. 4. [Figure 5E] FIG. 5E is a schematic diagram of step S28 in FIG. 4. [Figure 6] FIG. 6 is a flowchart of a third embodiment of the method for manufacturing an optical image module of the present invention. [Figure 7A] FIG. 7A is a schematic diagram of step S36 in FIG. 6. [Figure 7B] FIG. 7B is a schematic diagram of step S37 in FIG. 6. [Figure 8] FIG. 8 is a first schematic diagram of another embodiment of the positioning base of the present invention. [Figure 9] FIG. 9 is a second schematic diagram of another embodiment of the positioning base of the present invention. [Figure 10] FIG. 10 is a schematic diagram of one embodiment of the array-type optical image module of the present invention. [Figure 11A] FIG. 11A is a schematic diagram of one embodiment of the optical image module of the present invention. [Figure 11B] FIG. 11B is a schematic diagram of one embodiment of the optical image module of the present invention. DETAILED DESCRIPTION OF EMBODIMENTS

[0012] Embodiments of the present invention will be further described below with reference to the drawings. In the drawings and specification, the same symbols indicate the same or similar components whenever possible. In the drawings, for the sake of simplification and ease of representation, the shape and thickness may be exaggerated. Components not specifically shown in the drawings or specification are understood to be in forms known to those skilled in the art. Those skilled in the art can make various improvements and modifications based on the content of the present invention.

[0013] It should be noted that the order of the steps and the actual operating procedures described in the embodiments of the present invention can be adjusted as needed, and this does not limit the description of these embodiments.

[0014] Referring to Figure 1, the flowchart below describes the method for manufacturing the lens module of the endoscope according to the present invention, and the method for manufacturing the lens module of the endoscope includes steps S1 to S7.

[0015] As shown in Figures 1 and 2A, step S1 includes providing a positioning base 11. The positioning base 11 has a first surface 11A, a second surface 11B, and a plurality of lens barrel passages 112 that are opposite each other vertically. The positioning base 11 is provided with a plurality of alignment symbols 114, and the plurality of lens barrel passages 112 penetrate the first surface 11A and the second surface 11B, defining a plurality of base units 110 arranged in an array together with the plurality of alignment symbols 114. In Figure 2A, the plurality of alignment symbols 114 can be provided on the edges of the first surface 11A, but are not limited thereto. The plurality of alignment symbols 114 are connected to each other and intersect by dashed lines, and the single base units 110 defined by the intersection of these dashed lines are arranged in an array. The local region R is found to be a local cross-section of the lens barrel passage 112. Multiple support structures 113 are formed on the inner wall of the lens barrel passage 112. The height between the support structures 113 and the depth of each support structure 113 can be designed according to the optical design and lens size. Alternatively, a positioning base 11 with an array of lens barrel passages 112 can be formed by injection molding using a mold. The cross-section of the lens barrel passage 112 may be circular or rectangular; a circular passage is shown as an example in the figure, but it is not limited to this.

[0016] As shown in Figures 1 and 2B, step S2 is performed in each base unit 110, This involves placing multiple lenses 120 in layers into each lens barrel passage 112. To clarify their relative positions, the multiple lenses 120 are denoted as lens 1201, lens 1202, and lens 1203. Lenses 1201, 1202, and 1203 are placed in layers into the lens barrel passage 112 in order from smallest to largest according to their respective lens widths, and the edges of lenses 1201, 1202, and 1203 each abut against the support structure 113. The support structure 113 has a support surface, so the edges of lenses 1201, 1202, and 1203 abut against the support surface.

[0017] As shown in Figures 1 and 2C to 2F, step S3 includes injecting adhesive 13 between multiple lenses 120 to bond them together. In Figures 2C to 2F, the lens 120 has an imaging region 120A and a non-imaging region 120B. The imaging region 120A is at the center of the lens 120, and the non-imaging region 120B surrounds the imaging region 120A. On the other hand, different bonding locations have different embodiments. As shown in Figures 2C and 2D, the location where the adhesive 13 is injected is the non-imaging region 120B, while in Figures 2E and 2F, the location where the adhesive 13 is injected is both the imaging region 120A and the non-imaging region 120B.

[0018] As shown in Figures 1 and 2G, step S4 includes providing a flat glass layer 14 on the second surface 11B of the positioning base 11. The purpose of providing the flat glass layer 14 is to protect the lenses in the lens barrel passage, and also to enhance the optical design by further providing an anti-reflective coating layer to the flat glass layer 14.

[0019] In other embodiments, an additional planar glass layer (not shown) may be provided on the first surface 11A of the positioning base 11, or one of the lenses 120 may be replaced with another planar glass layer, and the other planar glass layer may be placed inside each lens barrel passage 112. This allows the planar glass layer to be bonded to the image sensor in a subsequent step, further strengthening the positioning and installation of the image sensor. In this embodiment, the other planar glass layer is not shown in the figure, but those skilled in the art should be able to understand its structure and features.

[0020] After step S4, an additional step can be added, providing a support plate under the positioning base 11. The support plate may be a temporary support plate, and there are different installation methods depending on the material of the support plate. For example, if the support plate is made of adhesive tape, it can be attached to the underside of the positioning base 11 using the adhesive on the support plate. In this way, the positioning base 11 prevents the cutting material from scattering or shifting during the subsequent cutting step, which would affect the manufacturing process. Furthermore, different light-shielding materials or curing methods can be selected depending on the material of the support plate to cure the subsequent light-shielding material.

[0021] As shown in Figures 1 and 2H, step S5 includes cutting the positioning base 11 along a plurality of alignment symbols 114 to form a plurality of filling passages 15.

[0022] As shown in Figures 1 and 2I, step S6 includes injecting and curing a light-shielding material 16 into a plurality of filling passages 15 so that the light-shielding material 16 covers the outer wall of the lens barrel passage and avoids covering the surface of the lens 120. Regarding the curing method, if a step of providing a temporary support plate is performed after step S14, a different light-shielding material 16 or curing method is selected based on the material of the support plate, and the curing method includes UV curing (ultraviolet curing) or heat curing.

[0023] As shown in Figures 1 and 2J, step S7 includes cutting the light-shielding material 16 along the side wall of the filling passage 15, forming an optical barrier layer 17 on the outer wall of each of the multiple lens barrel passages after cutting, and separating each base unit to form a lens module 12.

[0024] Referring to Figures 3A to 3C, a first embodiment of the method for manufacturing an optical image module of the present invention will be described, and the method for manufacturing an optical image module includes steps S11 to S18. Steps S11 to S16 are the same as steps S1 to S6 described above, and can be referred to together with Figures 2A to 2I, and will not be described again here. In this embodiment, in the step of manufacturing the lens module described above, step S17 is performed after the step of injecting and curing a light-shielding material 16 into a plurality of filling passages 15.

[0025] As shown in Figures 3A and 3B, step S17 includes forming an array-type endoscope lens module 1A by providing an image sensor 18 on one side of the lens 120 and having the other side of the image sensor 18 protrude adjacent to the first surface 11A of the positioning base 11.

[0026] It should be noted that, if necessary, steps related to wafer-level optical measurement can be added. For example, wafer-level optical measurement can be performed after step S17 to detect whether or not there are any defective lens modules. If there are defective modules, their locations are directly marked. If not, step S18 is then performed.

[0027] As shown in Figures 3A and 3C, step S18 includes forming an optical barrier layer 17 around the lens module 12 by cutting the light-shielding material along the side wall of the filling passage, thereby separating the multiple base units. Thus, after cutting the array-type optical image module 1A, multiple optical image modules 20 are formed together, and this manufacturing method enables mass production of optical image modules 20 for wafer-level endoscopes. In step S18, a predetermined thickness of light-shielding material is left on the side wall of the filling passage during cutting, which acts as an optical barrier layer 17 for the lens, preventing light rays from entering the lens module 12 and thus preventing an impact on the final optical imaging quality.

[0028] Furthermore, to facilitate manufacturing and assembly during actual implementation, in this embodiment, the first surface 11A of the positioning base 11 faces upward and the second surface 11B faces downward. When actually used in an endoscope after production is complete, the optical image module 20 is inverted so that the image sensor 18 is located below the entire optical image module 20 and electrically coupled with the other elements. As shown in the optical image module 20 on the right side of Figure 3C, the structure of the optical image module 20 after the array-type optical image module 1A has been cut and then inverted 180 degrees is shown. In actual implementation, the components can be inverted as needed, and this is not the only example.

[0029] Referring to Figures 4 and 5A to 5E, a second embodiment of the method for manufacturing an optical image module of the present invention will be described, and the method for manufacturing an optical image module includes steps S21 to S28.

[0030] Step S21 provides a positioning base. Step S22 places multiple lenses in layers into multiple lens barrel passages. Step S23 injects adhesive between the multiple lenses to bond them together. Steps S21 and S22 are shown in Figures 2A and 2B above, and step S23 is shown in Figures 2C to 2F above, and will not be explained again here.

[0031] As shown in Figures 4, 5A, and 5B, step S24 includes providing an image sensor 18 on one side of the lens, and the other side of each image sensor 18, which is opposite to the corresponding lenses, protruding and adjacent to the first surface 11A of the positioning base 11. Step S25 involves providing a planar glass layer 14 on the second surface 11B of the positioning base 11. The lenses 120 (lenses 1201, 1202, and 1203), the image sensors 18, and the planar glass layer 14 in the local region R' can all be bonded to each other by adhesive 13.

[0032] Steps related to wafer-level optical measurement can be added as needed. For example, it should be noted that wafer-level optical measurement may be performed after step S25 or after step S27. For example, after step S25, it is possible to detect whether there are any defective lens modules. If there are defective modules, their locations are marked. If there are no defective modules, step S26 is performed. Therefore, if optical measurement is performed first in this step, it is possible to immediately ignore defective modules and not perform subsequent assembly processes on them, thereby increasing work efficiency and reducing waste. Alternatively, after step S25, the modules may be ignored and no optical measurement may be performed first, and then wafer-level optical measurement may be performed after the subsequent step S27.

[0033] As shown in Figures 4 and 5C, step S26 includes forming multiple filling passages 15 by cutting the positioning base 11 along multiple alignment symbols 114.

[0034] As shown in Figures 4 and 5D, step S27 involves injecting and curing a light-shielding material 16 into a plurality of filling passages 15, so that the light-shielding material 16 covers the periphery of the lens module 12 and avoids covering the surface of the lens module 12, thereby forming an array-type optical image module 1B.

[0035] As shown in Figures 4 and 5E, step S28 includes cutting the array-type optical image module 1B. By cutting the light-shielding material along the side walls of the filling passage, an optical barrier layer is formed around the lens module, separating the multiple base units, and multiple optical image modules 20 are formed after the array-type optical image module 1B is cut.

[0036] Referring to Figures 6, 7A, and 7B, a third embodiment of the method for manufacturing an optical module of the present invention will be described. The method for manufacturing an optical image module includes steps S31 to S38, and the difference between this embodiment and the first embodiment is the process in steps S36 and S37. Steps S31 to S35 and S38 are the same as steps S11 to S15 and S18 of the first embodiment, so steps S31 to S35 and S38 will not be described again here.

[0037] As shown in Figures 6 and 7A, step S36 includes providing an image sensor 18 on one side of the lens, with the other side of the image sensor 18 protruding and adjacent to the first surface 11A of the positioning base 11.

[0038] As shown in Figures 6 and 7B, step S37 includes injecting and curing a light-shielding material 16 into the filling passage 15 so that the light-shielding material 16 covers the periphery of the lens module 12 and avoids covering the surface of the lens module 12, thereby forming an array-type optical image module 1C.

[0039] Referring to Figures 8 and 9, another embodiment of the positioning base is described below. The positioning base is equipped with a plurality of flow channels 116, and the positioning base is provided with an injection port 118. One end of the injection port 118 is located on the surface of the positioning base, and in the figures it is located on the first surface 11A, but this is not limited to that. The other end of the injection port 118 is connected to the plurality of flow channels 116, and the plurality of flow channels 116 are connected to each other to a plurality of lens barrel passages 112. In the step of injecting adhesive 13 between the plurality of lenses 120 as described above to bond them, the adhesive can be injected from the injection port 118 into the plurality of flow channels 116, fill the plurality of lens barrel passages 112, and flow between the lenses 120.

[0040] In the process of explaining the manufacturing method of the optical image module of the present invention described above, the array-type optical image module and the optical image module manufactured by the manufacturing method of the optical image module were described simultaneously. For clarity, a schematic diagram will be shown separately below and explained in detail.

[0041] Referring to Figure 10, an array-type optical image module 1 can be manufactured and formed by each embodiment of the optical image module manufacturing method described above. Furthermore, referring to Figures 2A to J and 3B to 3C together, it will be understood in detail that the array-type optical image module 1 includes a plurality of lens modules 12 and an image sensor 18. The plurality of lens modules 12 include a positioning base 11, a plurality of lenses 120, a planar glass layer 14, and an optical barrier layer 17.

[0042] The positioning base 11 has a first surface 11A and a second surface 11B that are opposite each other vertically, and a plurality of lens barrel passages 112. The positioning base 11 is provided with a plurality of alignment symbols 114, and in the figure, it is shown that the plurality of alignment symbols 114 are provided on the edge of the first plane 11A, but it is not limited to this. The plurality of lens barrel passages 112 penetrate the first surface 11A and the second surface 11B, and the plurality of lens barrel passages 112 define a plurality of base units 110 arranged in an array, together with the plurality of alignment symbols 114, and the alignment symbols 114 are cut to form filling passages 15. The plurality of lenses 120 are provided in each base unit 110, and the plurality of lenses 120 are provided in layers within their respective lens barrel passages 112, and are bonded together by adhesive 13 provided between the plurality of lenses 120. The planar glass layer 14 is provided on the second plane 11B of the positioning base 11. The optical barrier layer 17 is located within the filling passage 15. The optical barrier layer 17 is provided within the filling passage 15 by a light-shielding material 16, and the optical barrier layer 17 is formed by hardening the light-shielding material 16. The optical barrier layer 17 covers the outer wall of the lens barrel passage 112 and avoids overlapping the surface of the lens module 12. The image sensor 18 is provided on one side of the lens module 12. The other end of the image sensor 18 is adjacent to the first surface 11A of the base unit 110, and the other side of the image sensor 18 protrudes and is adjacent to the first surface 11A of the base unit 110.

[0043] Although Figure 10 does not show that the positioning base has multiple channels 116 and an injection port 118, by referring to Figures 8 and 9 together, it can be seen that one end of the injection port 118 is located on the first surface 11A, and the other end is connected to one of the multiple channels 116, and the multiple channels 116 are connected to each other to multiple lens barrel passages 112, and the adhesive is injected from the injection port 118 into the multiple channels 116 and fills the multiple lens barrel passages 112. The shape, size, and connection method of the channels 116 to the lens barrel passages 112 and injection port 118 can all be designed differently to meet different needs, and the position, size, and number of injection ports 118 can also be adjusted according to the actual adhesive injection conditions, adhesive quality, and needs, and are not limited thereto.

[0044] The image sensor 18 is preferably a CSP (Chip Scale Package) image sensor, and the package size and weight are minimized by packaging the image sensor chip on a package substrate the same size as the chip. The image sensor 18 may be, but is not limited to, a color (RGB) image sensor, a near-infrared (IR) sensor, a monochrome sensor, or a niche image sensor.

[0045] Referring to Figures 11A and 11B, Figures 11A and 11B show the optical image module 20 when it is rotated 180 degrees, and the optical image module 20 is formed by cutting the aforementioned array-type optical image module 1, and the optical image module 20 includes a lens module 12 and an image sensor 18.

[0046] Referring to Figures 2A to 2I, 3B, and 3C, the lens module 12 comprises a base unit 110, a plurality of lenses 120, a planar glass layer 14, and an optical barrier layer 17. The base unit 110 comprises a first surface 11A and a second surface 11B that are opposite each other vertically, and a lens barrel passage 112. The lens barrel passage 112 penetrates the first surface 11A and the second surface 11B. The lenses 120 are positioned in layers within the plurality of lens barrel passages 112, and the plurality of lenses 120 are bonded together with adhesive 13. The planar glass layer 14 is located on the second plane 11B of the positioning base 110. The optical barrier layer 17 covers the outer wall of the lens barrel passage 112 and avoids overlapping the surface of the lens module 12. The image sensor 18 is provided on one side of the lens module 12, and the other side of the image sensor 18 protrudes and is adjacent to the first surface 11A of the base unit 110.

[0047] The inner wall of the lens barrel passage 112 has a plurality of support structures 113, and the edges of the plurality of lenses 120 are in contact with each of the plurality of support structures 113. The lenses 120 are arranged in the lens barrel passage 112 from smallest to largest in the direction from the first plane 11A to the second plane 11B, according to their respective lens widths.

[0048] In summary, the effects realized by the lens module, array-type optical image module, optical image module, and manufacturing method thereof for endoscopes of the present invention are as follows. First, by utilizing the design of an array-type lens barrel, the assembly cost of the lenses is not only lower than the manufacturing cost of wafer-level lenses, but the overall manufacturing efficiency is also improved. Second, by performing lens alignment assembly within a single lens barrel, the resulting lenses have even higher precision and resolution than lenses made by stacking wafer-level lenses, and are applicable to high-resolution image sensors. In addition, the assembled lens module can be measured using a wafer-level optical measurement method, and if there are any problems, they can be sorted out in advance, saving costs and improving the yield rate. Furthermore, by attaching the image sensor to the lens barrel array with the lenses already installed, the same wafer-level production method can be realized, achieving the goal of large-scale production. Moreover, the lens module manufactured using the array method can increase manufacturing efficiency, and furthermore, a light-shielding layer can be manufactured simultaneously in the wafer-level manufacturing process, ultimately forming an image sensor module with image acquisition functionality, thereby further improving imaging quality.

[0049] As described above, only preferred embodiments of the present invention have been explained with examples, but this does not limit the scope of implementation. Simple substitutions and equivalent modifications made in accordance with the claims and specifications of this application all fall within the scope of the claims of the present invention. [Explanation of Symbols]

[0050] 11 Positioning base 11A 1st page 11B 2nd side 110 Base Unit 112 Telescope tube passage 113 Support structure 114 Alignment Symbols 116 Flow channels 118 Inlet 12 Lens Modules 120, 1201, 1202, 1203 lenses 120A Imaging area 120B Non-imaging region 13 Adhesive 14 Planar glass layer 15 Filling passage 16 Light-shielding materials 17 Optical barrier layer 18 Image Sensor 1, 1A, 1B, 1C Array-type optical image module 20 Optical Image Modules R, R' local area Steps S1-S7, S11-S18, S21-S28, S31-S38

Claims

1. A method for manufacturing an endoscope lens module, A positioning base having a first and second surface facing each other vertically and a plurality of lens barrel passages, wherein a plurality of alignment symbols are provided, and the plurality of lens barrel passages penetrate the first and second surfaces, and a step of defining a plurality of base units arranged in an array together with the plurality of alignment symbols, Within each of the base units, the steps include placing multiple lenses in layers into each of the lens barrel passages, The steps include injecting adhesive between the multiple lenses to bond them together, The steps include providing a flat glass layer on the second surface of the positioning base, The steps include providing a support plate below the positioning base, The steps include cutting the positioning base and the planar glass layer along the plurality of alignment symbols to form a plurality of filling passages, The steps include injecting a light-shielding material into the plurality of filling passages and curing it so that the light-shielding material covers the side walls of the plurality of filling passages and avoids covering the surfaces of the plurality of lenses, A method for manufacturing a lens module for an endoscope, comprising the steps of: cutting the light-shielding material along the side wall of the filling passage, forming an optical barrier layer on the outer wall of each of the multiple lens barrel passages after cutting, and separating the multiple base units to form a plurality of lens modules.

2. After the step of providing the planar glass layer on the second surface of the positioning base, A method for manufacturing an endoscope lens module according to claim 1, further comprising the steps of detecting whether or not there are any defective products in the lens module, marking the location of the defective product if there are any, and if there are no defective products, providing a support plate under the positioning base.

3. After the step of injecting the light-shielding material into the plurality of filling passages and curing it so that the light-shielding material covers the periphery of the plurality of lens modules and avoids covering the surfaces of the plurality of lens modules, A method for manufacturing an endoscope lens module according to claim 1, further comprising the steps of detecting whether or not there are any defective products in the lens module, marking the location of the defective products if there are any, and if there are no defective products, cutting the light-shielding material along the side walls of the plurality of filling passages.

4. Each of the aforementioned lenses has an imaging region and a non-imaging region, the imaging region is located at the center of the lenses, and the non-imaging region surrounds the imaging region. A method for manufacturing an endoscope lens module according to claim 1, wherein in the step of injecting the adhesive between the plurality of lenses to bond them, the adhesive is injected into the non-imaging region, or into the non-imaging region and the imaging region.

5. The positioning base comprises a plurality of flow paths and an inlet, one end of the inlet is located on the first surface and the other end is connected to one of the plurality of flow paths, and the plurality of flow paths are each connected to the corresponding plurality of lens barrel passages. The method for manufacturing an endoscope lens module according to claim 1, wherein in the step of injecting the adhesive between the plurality of lenses to bond them, the adhesive is injected from the injection port into the plurality of flow channels and fills the plurality of lens barrel passages.

6. A method for manufacturing an endoscope lens module according to claim 1, wherein a plurality of support structures are formed on the inner wall of each of the plurality of lens barrel passages, and in the step of placing the plurality of lenses in layers into the plurality of lens barrel passages, the edges of the plurality of lenses abut against each of the plurality of support structures.

7. The method for manufacturing an endoscope lens module according to claim 6, wherein the plurality of lenses are placed in layers into each of the lens barrel passages in order from smallest to largest according to the width of each lens, and the edges of the plurality of lenses abut against one of the plurality of support structures.

8. A method for manufacturing an endoscope lens module according to claim 1, further comprising the step of selecting different light-shielding materials or curing methods depending on the difference in the material of the support plate.

9. A method for manufacturing an optical image module, Each step included in the method for manufacturing an endoscope lens module according to any one of claims 1 to 8, A method for manufacturing an optical image module, comprising the steps of: after the step of injecting the adhesive between the plurality of lenses to bond them together, or before or after the step of injecting the light-shielding material into the filling passage and curing it, providing an image sensor on one side of each of the plurality of lens modules, and forming an array-type optical image module by having the side of each image sensor opposite to the side facing the lens module protrude and be adjacent to the first surface of the positioning base; and after the step of cutting the light-shielding material along the side wall of the filling passage, forming a plurality of optical image modules.

10. After the step of providing the image sensor on one side of each of the plurality of lens modules, The system detects whether or not there are any defective parts in the lens module, and if there are any defective parts, it marks the location of the defective parts; if there are no defective parts, After the step of injecting the adhesive and bonding, when the image sensors are each installed, the step of installing the planar glass layer is subsequently performed. Before the step of injecting and curing the light-shielding material, if the image sensors are each installed, the step of injecting and curing the light-shielding material is then performed. A method for manufacturing an optical image module according to claim 9, further comprising the step of cutting the light-shielding material along the side walls of the plurality of filling passages when the image sensors are installed, after the step of injecting and curing the light-shielding material.

11. An array-type optical image module, Equipped with multiple lens modules, The aforementioned multiple lens modules are A positioning base having a first and second surface facing each other vertically and a plurality of lens barrel passages, wherein a plurality of alignment symbols are provided, the plurality of lens barrel passages penetrate the first and second surfaces, a plurality of base units arranged in an array are defined together with the plurality of alignment symbols, and a plurality of filling passages are provided along the plurality of alignment symbols, A plurality of lenses, each provided within the base unit and arranged in layers within each of the lens barrel passages, with adhesive injected between the plurality of lenses, A planar glass layer is provided on the second surface of the positioning base, and has multiple filling passages such that, in a plan view, its shape corresponds to the multiple filling passages provided on the positioning base, An optical barrier layer is provided within the positioning base and the plurality of filling passages provided in the planar glass layer, covering the outer walls of the plurality of lens barrel passages, and avoiding covering the surfaces of the plurality of lenses. An array-type optical image module comprising: a plurality of image sensors, each having one side provided on one side of the plurality of lens modules, and the other side protruding adjacent to the first surface of the positioning base.

12. The array optical image module according to claim 11, wherein the plurality of lenses each have an imaging region and a non-imaging region, the imaging region is located at the center of the plurality of lenses, the non-imaging region surrounds the imaging region, and the adhesive is provided in the non-imaging region, or in both the non-imaging region and the imaging region.

13. The array optical image module according to claim 11, wherein the positioning base comprises a plurality of flow channels, the positioning base is provided with an injection port, one end of the injection port is located on the surface of the positioning base, the other end of the injection port is connected to the plurality of flow channels, and the plurality of flow channels are connected to each other to the plurality of lens barrel passages, and the adhesive is injected from the injection port into the plurality of flow channels and fills the plurality of lens barrel passages.

14. The array-type optical image module according to claim 11, wherein the inner walls of the plurality of lens barrel passages have a plurality of support structures, and the edges of the plurality of lenses are in contact with the plurality of support structures, respectively.

15. The array-type optical image module according to claim 14, wherein the plurality of lenses are provided in the plurality of lens barrel passages from small to large in the direction from the first surface to the second surface according to the width of each lens.

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