Core adjusting structure and core adjusting jig

Abstract

The invention discloses a core adjusting structure and a core adjusting jig. The core adjusting structure comprises a core adjusting lens, a lens outer frame and a core adjusting base. The lens outer frame is used for fixedly mounting the core adjusting lens and is provided with a core adjusting bayonet protruding out of the outer side wall of the lens outer frame; the core adjusting base is used for installing a lens outer frame, the core adjusting base is provided with a core adjusting groove corresponding to the core adjusting bayonet, and when the lens outer frame is installed on the core adjusting base, the core adjusting bayonet is located in the core adjusting groove and extends out of the core adjusting base; an external core adjusting jig can adjust the radial position of the lens outer frame on the core adjusting base by clamping the core adjusting bayonet extending out of the core adjusting groove; the core adjusting base further comprises a glue dispensing groove which is used for receiving glue and fixing the lens outer frame. An external core adjusting jig clamps the core adjusting bayonet and adjusts the position of the lens outer frame in the radial direction of the core adjusting base, so that the imaging quality of the lens can be improved, and the manufacturing cost of the core adjusting structure can be reduced.

Description

Technical Field

[0001] This application relates to the field of lenses, and in particular to a lens alignment structure and alignment fixture. Background Technology

[0002] With the development of modern science and technology, the lens industry has become increasingly mature, and the image quality of lenses on the market is constantly improving. In the field of optical lens manufacturing, in order to compensate for the cumulative errors in optical assembly, it is usually necessary to adjust the position of aspherical lenses, i.e., the alignment process. This ensures the consistency of the optical axis between lenses, maximizes the aberration correction capability of the aspherical design, and thus improves image sharpness, contrast, and distortion control. Most existing alignment structures achieve displacement through slots, which has a relatively small adjustment range. This makes it difficult to meet the strict requirements of ultra-short focal length lenses for a large field of view, and the structure is complex and the manufacturing cost is high. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a self-aligning structure that is simple in structure, low in manufacturing cost, and applicable to a wide range of self-aligning applications.

[0004] This application also proposes a combined mattress including the above-mentioned bed net structure.

[0005] According to one embodiment of this application, the alignment structure includes an alignment lens; a lens frame for fixing the alignment lens, the lens frame having an alignment slot protruding from the outer side wall of the lens frame; and an alignment base for mounting the lens frame, the alignment base having an alignment groove corresponding to the alignment slot. When the lens frame is mounted on the alignment base, the alignment slot is located inside the alignment groove and extends outside the alignment base. An external alignment fixture can adjust the radial position of the lens frame on the alignment base by clamping the alignment slot extending from the alignment groove. The alignment base also includes an adhesive dispensing groove for receiving adhesive and fixing the lens frame.

[0006] According to one embodiment of this application, the alignment structure includes a pressure plate that can be mounted on an alignment base. The pressure plate has a limiting protrusion that, when the pressure plate is mounted on the alignment base, abuts against the outer frame of the lens in the axial direction of the alignment lens.

[0007] According to one embodiment of this application, there are at least two limiting protrusions, and the multiple limiting protrusions are arranged along the circumferential spacing of the pressing sheet.

[0008] According to one embodiment of this application, a thermoplastic protrusion is provided on the lens frame. The thermoplastic protrusion is formed in a shape corresponding to the outer contour of the adjusting lens. When the adjusting lens is installed on the lens frame, the thermoplastic protrusion contacts the adjusting lens. The melting point of the thermoplastic protrusion is lower than that of the adjusting lens and other parts of the lens frame.

[0009] According to one embodiment of this application, the core-aligning base is provided with a first mounting cavity, and the lens frame is mounted on the first mounting cavity. The inner diameter of the first mounting cavity differs from the outer diameter of the lens frame by 0.4 mm.

[0010] According to one embodiment of this application, a plurality of dispensing grooves are provided, and the plurality of dispensing grooves are arranged circumferentially along the core-adjusting base, and the dispensing grooves connect the outside of the core-adjusting base to the first mounting cavity.

[0011] According to one embodiment of this application, multiple alignment slots are provided, and the number of alignment slots is the same as the number of alignment slots; the multiple alignment slots are arranged circumferentially along the outer frame of the lens, and the multiple alignment slots are arranged circumferentially along the alignment base, with the alignment slots connecting the outside of the alignment base to the first mounting cavity.

[0012] According to one embodiment of this application, a plurality of first reinforcing ribs are provided on the outer side wall of the lens frame along the axial direction of the lens frame, and a plurality of second reinforcing ribs are provided on the outer side wall of the adjusting base along the axial direction of the adjusting base.

[0013] According to another embodiment of this application, a core-aligning fixture is used to adjust the core-aligning lens in the above-described core-aligning structure.

[0014] According to another embodiment of this application, the core-aligning fixture includes: a gripper for gripping the core-aligning slot of the core-aligning structure; a first micrometer transmission mechanism and a second micrometer transmission mechanism for jointly controlling the gripper to drive the core-aligning slot to move radially in the core-aligning structure; and a dispensing section, having multiple dispensing sections for spraying glue, wherein when the core-aligning structure is installed on the gripper, the dispensing section is aligned with the dispensing groove of the core-aligning structure.

[0015] The alignment structure according to the embodiments of this application has at least the following beneficial effects: the alignment lens is fixedly installed on the lens outer frame, the lens outer frame is placed inside the alignment base, the alignment slot protruding from the outer wall of the lens outer frame is connected to the outside of the alignment base through the alignment groove of the alignment base, and the external alignment fixture can clamp the alignment slot and adjust the position of the lens outer frame in the radial direction of the alignment base, which can not only improve the lens imaging quality, but also reduce the manufacturing cost of the alignment structure.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the core-adjusting structure according to one embodiment of this application; Figure 2 for Figure 1A schematic diagram of the lens frame with a central alignment structure; Figure 3 for Figure 1 A schematic diagram of the structure of the core-aligning base with a core-aligning structure; Figure 4 for Figure 1 A schematic diagram of the tablet press with a core-adjusting structure; Figure 5 for Figure 1 Exploded view of the core-adjusting structure; Figure 6 This is a schematic diagram of the structure of a core-aligning fixture according to another embodiment of this application; Figure 7 for Figure 6 A cross-sectional view of the center adjusting fixture at point AA.

[0018] Reference numerals: 100, Alignment lens; 200, Lens frame; 210, Alignment bayonet; 220, Hot melt boss; 230, First reinforcing rib; 240, Limiting groove; 300, Alignment base; 310, Alignment groove; 320, Dispensing groove; 330, First mounting cavity; 340, Second reinforcing rib; 400, Pressing plate; 410, Limiting protrusion; 500, Alignment fixture; 510, First micrometer transmission mechanism; 520, Second micrometer transmission mechanism; 530, Gripper; 540, Dispensing part. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The following is for reference. Figures 1 to 7 The core-aligning structure according to an embodiment of this application is described.

[0025] It is worth noting that, please refer to Figure 1 , Figure 1 In the diagram, the X and Y axes are both radial axes of the self-aligning structure, the Z axis is the axial axis of the self-aligning structure, the arrow on the Z axis points upwards on the self-aligning structure, and the plane formed by the X and Y axes is the radial plane of the self-aligning structure.

[0026] Reference Figure 1 and Figure 5 As shown, the alignment structure of one embodiment of this application includes an alignment lens 100, a lens frame 200, and an alignment base 300. The lens frame 200 is used to fix the alignment lens 100, and the lens frame 200 is provided with an alignment slot 210 protruding from the outer side wall of the lens frame 200. The alignment base 300 is used to install the lens frame 200, and the alignment base 300 is provided with an alignment groove 310 corresponding to the alignment slot 210. When the lens frame 200 is installed on the alignment base 300, the alignment slot 210 is located in the alignment groove 310 and extends to the outside of the alignment base 300. The external alignment fixture 500 can adjust the radial position of the lens frame 200 in the alignment base 300 by clamping the alignment slot 210 extending from the alignment groove 310. The alignment base 300 also includes an adhesive dispensing groove 320, which is used to receive adhesive and fix the lens frame 200.

[0027] like Figure 1 and Figure 5As shown, the alignment structure from top to bottom consists of an alignment lens 100, a lens frame 200, and an alignment base 300. In this embodiment, the radial cross-section of the alignment lens 100 is circular, and the lens frame 200 is correspondingly configured as a hollow cylinder. A second mounting cavity is formed in the hollow portion of the lens frame 200, distributed along the radial surface of the lens frame 200. The inner diameter of the second mounting cavity is slightly larger than the diameter of the alignment lens 100, so as to fix the alignment lens 100. The alignment base 300 is also correspondingly configured as a hollow cylinder. A first mounting cavity 330 is formed in the hollow portion of the alignment base 300, distributed along the radial surface of the alignment base 300. The inner diameter of the first mounting cavity 330 is slightly larger than the outer diameter of the lens frame 200, and the lens frame 200 can reach the inner edge of the first mounting cavity 330. It is understood that the radial cross-section of the adjusting lens 100 can be any planar geometric shape other than a circle, such as an ellipse, etc., which is not limited here. The lens frame 200 and the adjusting base 300 are adjusted accordingly based on the radial cross-sectional shape of the adjusting lens 100.

[0028] like Figure 2 As shown, two alignment slots 210 protrude from the outer side wall of the lens frame 200. In this embodiment, the alignment slots 210 are arranged radially along the lens frame 200. The two alignment slots 210 are respectively arranged on both sides of the lens frame 200 symmetrical about the central axis of the lens frame 200, so that the external alignment fixture 500 can stably clamp the lens frame 200. The alignment slots 210 also have grooves for easy clamping.

[0029] like Figure 3 As shown, the lens base has two alignment grooves 310 on both sides symmetrical about the central axis of the lens frame 200. The alignment grooves 310 connect the first mounting cavity 330 to the outside of the lens base. When the lens frame 200 is placed in the first mounting cavity 330, part of the alignment slot 210 is located inside the alignment groove 310, and the other part extends to the outside of the lens base for adjustment by the external alignment fixture 500. The lens base is also provided with a dispensing groove 320, which connects to the first mounting cavity 330. After the alignment fixture 500 adjusts the position of the lens frame 200 to the outside of the alignment base 300, the glue dispensing groove 320 receives the glue. After the glue solidifies, it fixes the lens frame 200. In this embodiment, there are four glue dispensing grooves 320. The four glue dispensing grooves 320 are arranged around the circumference of the alignment base 300. The line connecting the positions of the four glue dispensing grooves 320 forms an isosceles trapezoid. The glue dispensing grooves 320 can fix the lens frame 200 around its perimeter.

[0030] It is understandable that there can be multiple alignment slots 210, and the alignment base 300 needs to be provided with a corresponding number of alignment slots 310; there can also be multiple glue dispensing slots 320, and the arrangement of glue dispensing slots 320 is diverse and not limited to the isosceles trapezoidal arrangement formed in this embodiment. It is only necessary to ensure that the glue dispensing slots 320 can fix the lens outer frame 200 around the lens outer frame 200 after the glue is injected, so as to prevent the lens outer frame 200 from becoming loose and causing changes in the resolving power of the lens.

[0031] In some embodiments, see Figure 1 and Figure 4 The alignment structure includes a pressure plate 400, which can be mounted on the alignment base 300. The pressure plate 400 has a limiting protrusion 410. When the pressure plate 400 is mounted on the alignment base 300, the limiting protrusion 410 abuts against the outer frame 200 of the lens in the axial direction of the alignment lens 100. That is to say, as Figure 4 As shown, the pressure plate 400 is formed into a hollow annular shape that fits the upper end face of the adjusting base 300. The inner diameter of the pressure plate 400 is slightly larger than the outer diameter of the lens frame 200. The pressure plate 400 has three limiting protrusions 410 radially inward along the pressure plate 400. The three limiting protrusions 410 are distributed at intervals on the pressure plate 400. The lens frame 200 is correspondingly provided with limiting grooves 240. When the lens frame 200 is placed in the first mounting cavity 330 of the adjusting base 300, the pressure plate 400 is fixedly installed to the upper end face of the adjusting base 300 by threads. At this time, the three limiting protrusions 410 can extend into the limiting grooves 240 of the lens frame 200 to limit the lens frame 200 in the axial direction. It is understood that there can be two or more limiting protrusions 410. As long as the limiting protrusions 410 are distributed at intervals and limit the lens outer frame 200 axially in one direction around the lens outer frame 200, it is sufficient. The limiting groove 240 on the lens outer frame 200 can be set as one, forming an annular groove around the lens outer frame 200, or it can be set as multiple, with each limiting groove 240 corresponding to one limiting protrusion 410. This is an improvement that is easy for those skilled in the art to think of, and will not be elaborated here.

[0032] In some embodiments, such as Figure 2As shown, the lens frame 200 is provided with a thermoplastic protrusion 220, which is formed to correspond to the outer contour of the adjusting lens 100. When the adjusting lens 100 is installed on the lens frame 200, the thermoplastic protrusion 220 contacts the adjusting lens 100. The melting point of the thermoplastic protrusion 220 is lower than that of the adjusting lens 100 and other parts of the lens frame 200. That is, the second mounting cavity of the lens frame 200 is provided with a thermoplastic protrusion 220 surrounding the second mounting cavity. The adjusting lens 100 is placed in the second mounting cavity and contacts the thermoplastic protrusion 220. At this time, the adjusting lens 100 and the lens frame 200 are heated as a whole, the thermoplastic protrusion 220 softens and bonds the adjusting lens 100. After the heating of the adjusting lens 100 and the lens frame 200 is stopped, the thermoplastic protrusion 220 fixes the adjusting lens 100. It is understandable that the adjusting lens 100 can also be fixedly installed into the lens outer frame 200 by means of edge binding, pressure ring, etc. This is a fixing method well known to those skilled in the art, and will not be described in detail here.

[0033] In some embodiments, the inner diameter of the first mounting cavity 330 differs from the outer diameter of the lens frame 200 by 0.4 mm. That is, the 0.4 mm gap allows the lens frame 200 to be adjusted within the adjusting base 300 within a range of ±0.2 mm. This adjustable range is relatively large and can meet the precision requirements of ultra-short focal length lenses for a wide field of view.

[0034] In some embodiments, such as Figure 2 and Figure 3 As shown, the lens frame 200 has a plurality of first reinforcing ribs 230 arranged on its outer side wall along the axial direction of the lens frame 200, and the core-aligning base 300 has a plurality of second reinforcing ribs 340 arranged on its outer side wall along the axial direction of the core-aligning base 300.

[0035] Another embodiment of this application includes a core-aligning fixture 500, such as... Figure 6 and Figure 7 As shown, the adjusting fixture 500, used to adjust the adjusting lens 100 in the aforementioned adjusting structure, includes: a gripper 530 for gripping the adjusting slot 210 of the adjusting structure; a first micrometer transmission mechanism 510 and a second micrometer transmission mechanism 520 for jointly controlling the gripper 530 to move the adjusting slot 210 radially in the adjusting structure; and a dispensing section 540, of which multiple dispensing sections 540 are provided for dispensing adhesive. When the adjusting structure is installed on the gripper 530, the dispensing section 540 is aligned with the dispensing groove 320 of the adjusting structure.

[0036] In other words, the alignment fixture 500 can hold the alignment bayonet 210 of the alignment structure via the gripper 530 and adjust the position of the lens outer frame 200 via the first micrometer transmission mechanism 510 and the second micrometer transmission mechanism 520. The first micrometer transmission mechanism 510 controls the movement of the gripper 530 in the X-axis direction, and the second micrometer transmission mechanism 520 controls the movement of the gripper 530 in the Y-axis direction. The adhesive sprayed by the dispensing unit 540 is a UV-curable adhesive, and the dispensing unit 540 performs UV curing on the dispensing groove 320 after spraying the adhesive. Please refer to the following for comprehensive information. Figures 1 to 7 The following explanation is based on the core-aligning steps: S1. The alignment lens 100 is placed into the second mounting cavity of the lens frame 200 and the alignment lens 100 is brought into contact with the hot-melt boss 220. Then, the alignment lens 100 and the lens frame 200 are heated, wherein the hot-melt boss 220 softens and bonds the alignment lens 100. After the heating of the alignment lens 100 and the lens frame 200 is stopped, the hot-melt boss 220 cools and fixes the alignment lens 100 in the lens frame 200. S2. Place the lens frame 200 with the adjusting lens 100 fixed in it into the first mounting cavity 330 of the adjusting base 300. S3. Next, the pressure plate 400 is fixed to the upper end face of the adjusting base 300 by means of threaded connection. At this time, the limiting protrusion 410 on the pressure plate 400 abuts against the limiting groove 240 of the lens outer frame 200. The pressure plate 400 limits the lens outer frame 200 in the axial direction. Since the inner diameter of the first mounting cavity 330 of the adjusting base 300 is larger than the outer diameter of the lens outer frame 200, the lens outer frame 200 can move in the radial direction of the adjusting base 300 in the first mounting cavity 330. S4. Place the alignment structure into the alignment fixture 500, and the jaws 530 of the alignment fixture 500 hold the alignment bayonet 210 of the lens frame 200. S5. Adjust the first micrometer transmission mechanism 510 and the second micrometer transmission mechanism 520 to drive the gripper 530 to move the lens outer frame 200 on the radial plane (i.e., the X-axis-Y-axis plane) of the core-aligning structure. S6. Once the lens frame 200 has been moved to the desired position, the dispensing unit 540 injects UV-curing adhesive into the dispensing groove 320 of the alignment base 300 for UV curing, thereby fixing the lens frame 200 onto the alignment base 300 to prevent it from loosening.

[0037] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A self-aligning structure, characterized in that, include: Alignment lenses; The lens frame is used to fix the adjusting lens, and the lens frame is provided with an adjusting slot protruding from the outer side wall of the lens frame; The alignment base is used to mount the lens frame. The alignment base has an alignment groove corresponding to the alignment slot. When the lens frame is mounted on the alignment base, the alignment slot is located in the alignment groove and extends to the outside of the alignment base. An external alignment fixture can adjust the radial position of the lens frame on the alignment base by clamping the alignment slot extending from the alignment groove. The alignment base also includes an adhesive dispensing groove for receiving adhesive and fixing the lens frame.

2. The self-aligning structure according to claim 1, characterized in that, The device includes a pressure plate that can be mounted on the alignment base. The pressure plate has a limiting protrusion that, when mounted on the alignment base, abuts the outer frame of the lens in the axial direction of the alignment lens.

3. The self-aligning structure according to claim 2, characterized in that, The number of the limiting protrusions is at least two, and the plurality of the limiting protrusions are arranged at circumferential intervals along the pressing plate.

4. The self-aligning structure according to claim 1, characterized in that, The lens frame is provided with a thermoplastic protrusion, which is formed in a shape corresponding to the outer contour of the alignment lens. When the alignment lens is installed on the lens frame, the thermoplastic protrusion contacts the alignment lens. The melting point of the thermoplastic protrusion is lower than that of the alignment lens and other components of the lens frame.

5. The self-aligning structure according to claim 1, characterized in that, The core-aligning base has a first mounting cavity, and the lens frame is mounted on the first mounting cavity. The inner diameter of the first mounting cavity differs from the outer diameter of the lens frame by 0.2-0.6 mm.

6. The self-aligning structure according to claim 5, characterized in that, Multiple dispensing grooves are provided, and the multiple dispensing grooves are arranged circumferentially along the core-adjusting base. The dispensing grooves connect the outside of the core-adjusting base to the first mounting cavity.

7. The self-aligning structure according to claim 5, characterized in that, The lens aligning slots are provided in multiple ways, and the number of the alignment slots is the same as the number of alignment slots. The multiple alignment slots are arranged circumferentially along the outer frame of the lens, and the multiple alignment slots are arranged circumferentially along the alignment base. The alignment slots connect the outside of the alignment base to the first mounting cavity.

8. The self-aligning structure according to claim 1, characterized in that, The lens frame has a plurality of first reinforcing ribs arranged on its outer side wall along the axial direction of the lens frame, and the core-aligning base has a plurality of second reinforcing ribs arranged on its outer side wall along the axial direction of the core-aligning base.

9. A core-aligning fixture, characterized in that, Used for adjusting the adjusting lens in the adjusting structure as described in any one of claims 1 to 8.

10. The core-aligning fixture according to claim 9, characterized in that, include: The gripper is used to grip the core-aligning jaw of the core-aligning structure. The first micrometer transmission mechanism and the second micrometer transmission mechanism are used to jointly control the gripper to drive the core adjusting jaw to move radially in the core adjusting structure; The dispensing section is provided in multiple ways. The dispensing section is used to spray glue. When the adjusting structure is installed on the gripper, the dispensing section is aligned with the dispensing groove of the adjusting structure.

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