Lens detection jig
By setting a dispensing groove on the fixture motherboard of the lens detection fixture, the glass plate is pasted through the colloid in the dispensing groove, the problem of unstable adhesion level of the flat glass caused by inconsistent glue thickness is solved, and the accuracy of the lens detection results and assembly efficiency are improved.
Patent Information
- Application Number
- CN202421899416.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-07
AI Technical Summary
During the assembly process of existing lens detection fixtures, the glue thickness is difficult to maintain consistent, resulting in unstable level of the adhesion of flat glass, affecting the accuracy of lens detection results. When the flat glass is pressed, the glue may overflow into the through hole and interfere with the flat lens.
A lens detection fixture is designed. The fixture main board is equipped with a lens fixing area, and several dispensing grooves are provided around each through hole. The glass flat plate is pasted on the lens fixing area through the colloid in the dispensing groove, so as to control the colloid liquid level to reach the bearing surface, reducing the difficulty of dispensing and improving the control accuracy of the glue.
The level of adhesion of glass plates is improved, the risk of glue overflowing into the through holes is reduced, thereby improving the accuracy of lens detection results and simplifying the assembly process of the fixture.
Smart Images
Figure CN222866191U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lens testing, in particular to a lens testing jig. Background Art
[0002] The MTF (Modulation Transfer Function) parameter is an indicator used to evaluate the imaging quality (resolution) of an optical lens. Therefore, an MTF test device is generally used to test the imaging quality of an assembled lens. During the test, the lens needs to be fixed in a test fixture first, and then the test fixture is placed on the test platform of the MTF test device for testing.
[0003] The detection jig in the prior art generally includes a jig body and a flat glass arranged at the bottom of the jig body. A plurality of through holes for fixing the lens are opened on the jig body, and the flat glass is used to support the lens at the bottom of the lens. At present, when assembling the jig body and the flat glass, the bottom of the jig body is facing upward, and then glue is directly applied to the bottom of the jig body, and the flat glass is moved to the jig body and attached. However, it is difficult to keep the glue thickness consistent at different glue application positions on the jig body, and the glue application is difficult. Different glue thicknesses will affect the horizontality of the flat glass attachment, and thus affect the accuracy of the lens detection results. In addition, when the flat glass is pressed, the glue may flow into the through hole due to pressure and interfere with the lens, affecting the horizontality between the lenses in the jig body, and thus affecting the accuracy of the lens detection results.
[0004] Therefore, it is urgent to propose a lens inspection fixture to solve the above technical problems. Utility Model Content
[0005] The utility model provides a lens detection jig, the glass plate of which is attached at a higher level, the risk of glue overflowing into a through hole is lower, the accuracy of the lens detection result is improved, the difficulty of glue dispensing is lower, and the assembly efficiency of the lens detection jig is improved.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] Lens inspection fixture, including:
[0008] A fixture mainboard, wherein a lens fixing area is provided on the fixture mainboard, a plurality of through holes for fixing the lens are provided in the lens fixing area, and a plurality of glue dispensing grooves are provided around each of the through holes on the supporting surface of the fixture mainboard, and the glue dispensing grooves are filled with colloid;
[0009] A glass plate is adhered to the lens fixing area through the colloid in the glue dispensing groove, and the glass plate is used to support the lens.
[0010] Optionally, four glue dispensing grooves are provided around each of the through holes, and the four glue dispensing grooves are arranged at equal intervals along the circumference of the through hole.
[0011] Optionally, a plurality of the through holes are arranged in an array, and two adjacent through holes in the same row share the glue dispensing groove between the two through holes.
[0012] Optionally, two glue dispensing grooves are provided between two adjacent through holes in the same row.
[0013] Optionally, a plurality of the through holes are arranged in an array, and two adjacent through holes in the same column share the glue dispensing groove between the two through holes.
[0014] Optionally, two glue dispensing grooves are provided between two adjacent through holes in the same column.
[0015] Optionally, a plurality of limiting bosses are provided on the bearing surface along the circumference of the lens fixing area, the plurality of limiting bosses enclose an installation space, the glass plate is installed in the installation space, and the outer peripheral wall of the glass plate abuts against the limiting bosses.
[0016] Optionally, the glass plate is rectangular, and four limiting bosses are provided, and the four limiting bosses are respectively in contact with four side walls of the glass plate.
[0017] Optionally, the limiting boss is cylindrical, and a circumferential surface of the limiting boss abuts against an outer circumferential wall of the glass plate.
[0018] Optionally, an end of the limiting boss is a plane, and the plane is a reference plane for detecting the horizontality of the glass plate.
[0019] Beneficial effects of the utility model:
[0020] The utility model provides a lens detection jig, including a jig mainboard and a glass plate. The jig mainboard is provided with a plurality of glue dispensing grooves around the through hole for fixing the lens, and the colloid used for pasting the glass plate and the jig mainboard can be dotted in the glue dispensing grooves. With such a configuration, it is only necessary to make the liquid level of the colloid reach the supporting surface, which greatly reduces the difficulty of glue dispensing, can improve the efficiency of glue dispensing, and can improve the horizontality of the glass plate attachment, thereby improving the assembly efficiency of the lens detection jig and the accuracy of the lens detection results. In addition, since the amount of glue dispensing can be well controlled, when the colloid is pressed onto the glass plate to solidify, the risk of the colloid overflowing into the through hole is low, which effectively prevents the colloid in the through hole from interfering with the flatness of the lens, and improves the accuracy of the lens detection results. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0022] Figure 1 It is a structural schematic diagram of a fixture mainboard provided by an embodiment of the utility model;
[0023] Figure 2 It is a structural schematic diagram of a glass plate provided by an embodiment of the utility model;
[0024] Figure 3 It is an assembly diagram of a fixture mainboard and a glass plate provided in an embodiment of the utility model.
[0025] In the figure:
[0026] 100, fixture main board; 101, bearing surface; 110, through hole; 120, glue dispensing groove; 130, limiting boss; 200, glass plate. DETAILED DESCRIPTION
[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0030] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0031] The detection jig in the prior art generally includes a jig body and a flat glass arranged at the bottom of the jig body. A plurality of through holes for fixing the lens are opened on the jig body, and the flat glass is used to support the lens at the bottom of the lens. At present, when assembling the jig body and the flat glass, the bottom of the jig body is facing upward, and then glue is directly applied to the bottom of the jig body, and the flat glass is moved to the jig body and attached. However, it is difficult to keep the glue thickness consistent at different glue application positions on the jig body, and the glue application is difficult. Different glue thicknesses will affect the horizontality of the flat glass attachment, and thus affect the accuracy of the lens detection results. In addition, when the flat glass is pressed, the glue may flow into the through hole due to pressure and interfere with the lens, affecting the horizontality between the lenses in the jig body, and thus affecting the accuracy of the lens detection results.
[0032] Based on the above problems, this embodiment provides a lens inspection jig, in which the glass plate of the lens inspection jig is attached at a high level, the risk of glue overflowing into the through hole is low, the accuracy of the lens inspection result is improved, and the difficulty of glue dispensing is low, thereby improving the assembly efficiency of the lens inspection jig.
[0033] Specifically, Figure 1-Figure 3As shown, the lens inspection jig includes a jig mainboard 100 and a glass plate 200. The jig mainboard 100 is provided with a lens fixing area, and the lens fixing area is provided with a plurality of through holes 110 for fixing the lens. On the supporting surface 101 of the jig mainboard 100, a plurality of glue dispensing grooves 120 are provided around each through hole 110, and the glue dispensing grooves 120 are filled with colloid. The glass plate 200 is adhered to the lens fixing area through the colloid in the glue dispensing grooves 120, and the glass plate 200 is used to support the lens.
[0034] The assembly process of the lens inspection fixture is as follows:
[0035] First, place the jig main board 100 on a plane with the supporting surface 101 of the jig main board 100 facing upward; then dispense glue into the glue dispensing groove 120 so that the liquid level of the glue reaches the supporting surface 101; finally, move the glass plate 200 to the lens fixing area of the jig main board 100, apply pressure to the glass plate 200, and solidify the glue in the glue dispensing groove 120.
[0036] It is worth noting that if the colloid liquid level does not reach the supporting surface 101 , the colloid in the dispensing groove 120 will not be able to contact the glass plate 200 .
[0037] The lens inspection jig provided in this embodiment limits the amount of glue dispensed by the glue dispensing groove 120, which can well control the amount of glue dispensed while reducing the difficulty of glue dispensing, thereby improving the efficiency of glue dispensing and the levelness of the glass plate 200 being attached, thereby improving the assembly efficiency of the lens inspection jig and the accuracy of the lens inspection results. In addition, since the amount of glue dispensed can be well controlled, when the colloid is pressed onto the glass plate 200 to solidify, the risk of the colloid overflowing into the through hole 110 is low, which effectively prevents the colloid in the through hole 110 from interfering with the flatness of the lens, thereby improving the accuracy of the lens inspection results.
[0038] Further, see Figure 1 In this embodiment, four glue dispensing grooves 120 are arranged around each through hole 110, and the four glue dispensing grooves 120 are arranged at equal intervals along the circumference of the through hole 110. In this way, the effect of fixing the glass plate 200 is better, and the adhesive force on the glass plate 200 around the through hole 110 is more uniform, which reduces the risk of deformation of the glass plate 200, helps to ensure the levelness of the glass plate 200 relative to the through hole 110, and thus improves the accuracy of the lens detection result.
[0039] Optionally, in other embodiments, the number and arrangement of the glue dispensing grooves 120 around each through hole 110 may also be other, and can be arranged according to actual needs, and this application does not make specific limitations.
[0040] Further, see Figure 1A plurality of through holes 110 are arranged in a row in the lens fixing area. By arranging a plurality of through holes 110, it is convenient for lens detection and more beautiful.
[0041] Optionally, in a possible embodiment, two adjacent through holes 110 in the same row share the glue dispensing groove 120 between the two through holes 110. This arrangement can reduce the number of glue dispensing grooves 120, facilitating the processing of the fixture main board 100. Optionally, the number of glue dispensing grooves 120 between two adjacent through holes 110 in the same row can be two.
[0042] Optionally, in another possible embodiment, two adjacent through holes 110 in the same column share the glue dispensing groove 120 between the two through holes 110. Such a configuration can reduce the number of glue dispensing grooves 120, facilitating the processing of the jig main board 100. Optionally, the number of glue dispensing grooves 120 between two adjacent through holes 110 in the same column can be two.
[0043] In this embodiment, two adjacent through holes 110 in the same row share the glue dispensing groove 120 between the two through holes 110 , and two adjacent through holes 110 in the same column share the glue dispensing groove 120 between the two through holes 110 .
[0044] Further, see Figure 1 and Figure 3 A plurality of limiting bosses 130 are provided on the bearing surface 101 along the circumference of the lens fixing area. The plurality of limiting bosses 130 enclose an installation space. The glass plate 200 is installed in the installation space, and the outer peripheral wall of the glass plate 200 abuts against the limiting bosses 130. By providing a plurality of limiting bosses 130, the movement of the glass plate 200 can be limited, so as to prevent the glass plate 200 from being adhered to the glue at the position opposite to the through hole 110 or the glass plate 200 from being adhered to other positions opposite to the glue dispensing groove 120, thereby affecting the flatness of the lens.
[0045] Optionally, continue to see Figure 1 and Figure 3 In this embodiment, the glass plate 200 is rectangular, and there are four limiting bosses 130, which are respectively in contact with the four side walls of the glass plate 200. The structure is simple, and the effect of limiting the glass plate 200 is better. Of course, in other embodiments, the shape of the glass plate 200 and the number and arrangement of the limiting bosses 130 can also be other, which can be set according to actual needs, and this application does not make specific limitations.
[0046] Optionally, continue to see Figure 1 and Figure 3In a possible embodiment, the limiting boss 130 is cylindrical, and the circumferential surface of the limiting boss 130 abuts against the outer circumferential wall of the glass plate 200. Such a configuration makes the contact between the limiting boss 130 and the glass plate 200 a line contact, greatly reducing the contact area between the limiting boss 130 and the glass plate 200, thereby reducing the wear of the glass plate 200 when installing the glass plate 200, which is beneficial to protecting the glass plate 200.
[0047] Further, see Figure 1 and Figure 3 The end of the limiting boss 130 is a plane, and the plane is a reference plane for detecting the levelness of the glass plate 200. By setting the end of the limiting boss 130 as a plane and using the plane as the reference plane for detecting the levelness of the glass plate 200, the problem of being unable to check whether the glass plate 200 is attached horizontally is solved, and the accuracy of the lens detection result is improved.
[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A lens inspection jig, characterized in that: include: A jig main board (100), wherein a lens fixing area is provided on the jig main board (100), a plurality of through holes (110) for fixing the lens are provided in the lens fixing area, and a plurality of glue dispensing grooves (120) are provided around each of the through holes (110) on a bearing surface (101) of the jig main board (100), wherein the glue dispensing grooves (120) are filled with colloid; The glass plate (200) is adhered to the lens fixing area through the colloid in the glue dispensing groove (120), and the glass plate (200) is used to support the lens.
2. The lens inspection jig according to claim 1, characterized in that: Four glue dispensing grooves (120) are arranged around each through hole (110), and the four glue dispensing grooves (120) are arranged at equal intervals along the circumference of the through hole (110).
3. The lens inspection jig according to claim 2, characterized in that: A plurality of the through holes (110) are arranged in an array, and two adjacent through holes (110) in the same row share the glue dispensing groove (120) between the two through holes (110).
4. The lens inspection jig according to claim 3, characterized in that: Two glue dispensing grooves (120) are provided between two adjacent through holes (110) in the same row.
5. The lens inspection jig according to claim 2, characterized in that: A plurality of the through holes (110) are arranged in an array, and two adjacent through holes (110) in the same row share the glue dispensing groove (120) between the two through holes (110).
6. The lens inspection jig according to claim 5, characterized in that: Two glue dispensing grooves (120) are provided between two adjacent through holes (110) in the same row.
7. The lens inspection jig according to any one of claims 1 to 6, characterized in that: A plurality of limiting bosses (130) are provided on the bearing surface (101) along the circumference of the lens fixing area, and the plurality of limiting bosses (130) enclose an installation space, the glass plate (200) is installed in the installation space, and the outer peripheral wall of the glass plate (200) abuts against the limiting bosses (130).
8. The lens inspection jig according to claim 7, characterized in that: The glass plate (200) is rectangular, and four limiting bosses (130) are provided. The four limiting bosses (130) are respectively in contact with four side walls of the glass plate (200).
9. The lens inspection jig according to claim 7, characterized in that: The limiting boss (130) is cylindrical, and the circumferential surface of the limiting boss (130) abuts against the outer circumferential wall of the glass plate (200).
10. The lens inspection jig according to claim 7, characterized in that: The end of the limiting boss (130) is a plane, and the plane is a reference plane for detecting the horizontality of the glass plate (200).