Lens positioning tool and lens measuring device

Abstract

The utility model relates to measuring instrument technical field discloses a kind of lens positioning tool and lens measuring device, wherein, the lens positioning tool of the utility model, including base, is equipped with vacuum hole, base is adsorbed lens by vacuum hole;And ferrule, be equipped with the alignment slot for accommodating lens, alignment slot is adapted to lens, when ferrule is sleeved on base, lens is aligned with base, alignment slot is communicated with vacuum hole;The utility model lens measuring device includes above-mentioned lens positioning tool.The utility model plays lens can be quickly aligned with base, guarantee the consistency of measurement datum, to improve the reliability of measurement result and the accuracy of product quality judgment high technical effect.

Description

Technical Field

[0001] This utility model belongs to the field of measuring instrument technology, specifically relating to a lens positioning fixture and a lens measuring device. Background Technology

[0002] As a core component that directly affects the visual presentation and protective performance of a watch, the measurement of the size and contour accuracy of the watch crystal is a key link in ensuring product quality, which will affect subsequent assembly accuracy and water tightness testing.

[0003] Currently, watch crystal contour measurement devices primarily use probes to lightly touch the surface of the crystal, measuring and simulating its contour point-to-point. These devices consist of a base and a clamp. Before measurement, the crystal is placed on the base, and the clamp holds and secures it. Once positioned, the probes measure the contour point-to-point. To ensure the accuracy and reliability of the measurement results, the crystal must be placed and fixed at the center of the base during the positioning process to guarantee consistent measurement reference.

[0004] However, when operators place the lens on the base, it is difficult to accurately align the center of the lens with the center of the base with the naked eye. The resulting deviation will cause systematic errors in the lens data collected by the probe, which in turn will affect the reliability of the measurement results and the accuracy of the product quality judgment. Summary of the Invention

[0005] To address the shortcomings of the prior art, this utility model provides a lens positioning fixture and a lens measuring device, which enables the lens to be quickly aligned with the base, thus ensuring the consistency of the measurement reference and improving measurement accuracy. The reliability of the measurement results and the accuracy of product quality judgment are both high.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0007] In a first aspect, this utility model provides a lens positioning fixture, including a base with a vacuum channel through which the lens is adsorbed; and a collar with an alignment groove for accommodating the lens, the alignment groove being adapted to the lens, and when the collar is fitted onto the base, the lens is aligned with the base, and the alignment groove is connected to the vacuum channel.

[0008] In some implementations, the base includes a seat and a support column, and an alignment structure is provided between the collar and the support column.

[0009] In some implementations, the collar has a connecting hole, and the alignment groove is connected to the vacuum channel through the connecting hole; the alignment structure includes a first external protrusion, which is disposed on the wall of the connecting hole, and the support column has a groove, wherein the first external protrusion is engaged with the support column at the groove.

[0010] In some implementations, the support column is detachably connected to the base.

[0011] In some implementations, the base has a slot for inserting the support post, and the base has a second protrusion on the inner wall of the slot, which engages with the support post at the groove.

[0012] In some implementations, multiple grooves are provided, and the multiple grooves are distributed at intervals along the outer edge of the support column.

[0013] In some implementations, the support column includes a connecting end, the collar is fitted onto the connecting end, and the connecting end has an enlarged groove that communicates with the vacuum channel.

[0014] In some implementations, the alignment groove is a stepped groove, and the alignment groove includes an upper groove and a lower groove, which respectively accommodate lenses of different sizes.

[0015] In some implementations, the upper groove is a square groove and the lower groove is a circular groove.

[0016] Secondly, this utility model provides a lens measuring device, including the lens positioning fixture described above.

[0017] In summary, this utility model has at least the following advantages:

[0018] 1. The lens positioning fixture provided by this utility model allows for rapid alignment of the lens before measurement. The operator first places the lens into the alignment groove of the collar, ensuring correct placement. The collar then moves to the base and fits onto it, achieving quick alignment between the lens and the base. The base uses vacuum channels to vacuum-adsorb the lens, preventing lens displacement during measurement. A probe measures the surface contour of the fixed lens, ensuring high measurement accuracy with accurate alignment between the lens and the base. The collar helps solve alignment deviation problems during placement, and the rapid alignment operation improves measurement efficiency, ensures accurate measurement data, and prevents defective products from reaching the customer.

[0019] 2. The lens measuring device provided by this utility model can position the lens using a lens positioning fixture, thereby ensuring that the measurement reference of different lenses remains consistent. This reduces the systematic error in the lens data collected by the probe, improves the reliability of the measurement results, and enhances the accuracy of product quality judgment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the base structure according to a specific embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the collar according to a specific embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the base body according to a specific embodiment of the present utility model.

[0023] Figure 4 This is a cross-sectional view of the seat body along plane AA, which is a specific embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of the support column in a specific embodiment of the present invention.

[0025] Figure 6 This is a schematic cross-sectional view of the support column from the BB plane of a specific embodiment of the present invention.

[0026] Figure 7 This is a cross-sectional view of the collar along the axial direction of a specific embodiment of the present utility model.

[0027] Marked in the image:

[0028] 1. Base; 11. Vacuum channel; 12. Support column; 121. Connecting end; 122. Expansion groove; 13. Seat body; 131. Slot; 132. Second external protrusion; 14. Alignment structure; 141. First external protrusion; 142. Groove;

[0029] 2. Ring; 21. Alignment groove; 211. Upper groove body; 212. Lower groove body; 22. Connecting hole. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] Example 1:

[0033] Please see Figure 1 and Figure 2 The lens positioning fixture of this utility model can be used in lens measurement and testing equipment such as optical performance testing equipment, surface quality testing equipment, coating layer testing equipment, and size and contour measurement equipment to accurately position the lens to be tested.

[0034] Please see Figure 1 The lens positioning fixture of this utility model includes a base 1, on which a vacuum channel 11 is provided. Specifically, the base 1 can be connected to an external vacuum pump, such as a vacuum pump, which evacuates the vacuum channel 11. The base 1 then adsorbs the lens to be measured, thus fixing the lens to be measured.

[0035] Please see Figure 2 A collar 2 is fitted onto the base 1, and the collar 2 is detachably connected to the base 1. The collar 2 has an alignment groove 21 for accommodating the lens. The alignment groove 21 is adapted to fit the lens; specifically, the axis of the alignment groove 21 coincides with the axis of the base 1, so that when the collar 2 is fitted onto the base 1, the lens is aligned with the base 1. The operator only needs to correctly place the lens into the alignment groove 21, and the collar 2 will engage with the base 1, achieving rapid alignment of the lens center with the base 1 center.

[0036] The alignment groove 21 is connected to the vacuum channel 11. When the collar 2 is fitted on the base 1, the vacuum channel 11 adsorbs the lens through the alignment groove 21, and the lens does not shift during the measurement process.

[0037] Please see Figure 1 and Figure 2 When positioning the lens using the collar 2 and base 1, the lens to be measured is placed in the alignment groove 21. After the lens is fully placed in the alignment groove 21, the operator moves the collar 2 to the base 1, the collar 2 is put into the base 1, and then the collar 2 is released. At the same time, the suction valve of the vacuum equipment connected to the base 1 is opened, and the base 1 can firmly hold the lens. The lens measuring equipment is started, and the probe begins to measure the single-sided point of the lens once.

[0038] Compared to traditional clamps, the collar 2 and base 1 work together without requiring operators to visually align the lens with the base 1, and without requiring repeated adjustments to the lens position to ensure consistent measurement reference. The collar 2 and base 1 achieve rapid and precise alignment, greatly improving the efficiency of lens measurement. Simultaneously, the precise alignment of the lens with the base 1 reduces the impact of positional deviations between the lens and base 1 on the measurement results, ensuring the accuracy of the measurement data.

[0039] Example 2:

[0040] The difference between this embodiment and Embodiment 1 is that this embodiment further optimizes the structure of the base 1 and the collar 2 of this utility model. Please refer to [link / reference]. Figures 2-7 .

[0041] Please see Figures 3-6 The base 1 in this embodiment includes a base body 13 and a support column 12. For details, please refer to [link / reference]. Figure 3 and Figure 4 The base 13 can be fixedly mounted on the operating table of the lens measuring equipment. The base 13 can be circular. The support column 12 is mounted on the base 13, and the collar 2 is fitted onto the support column 12. Specifically, the vacuum channel 11 can include a first section and a second section. The first section is horizontally opened on the base 13, and the second section is vertically opened on the support column 12. A vacuum environment is formed in the vacuum channel 11 by connecting a vacuum pump to the base 13. When the collar 2 is fitted onto the support column 12, the support column 12 adsorbs the lens at the second section of the vacuum channel 11.

[0042] Please see Figure 2 An alignment structure 14 is provided between the collar 2 and the support column 12, which facilitates the rapid assembly of the collar 2 and the support column 12. In a preferred embodiment, the collar 2 has a connecting hole 22. Specifically, the connecting hole 22 extends through the bottom of the alignment groove 21 and can be coaxially arranged with the alignment groove 21. The connecting hole 22 is adapted to the support column 12 so that the collar 2 can be inserted into the support column 12 at the connecting hole 22. When the collar 2 is fitted into the support column 12, the alignment groove 21 is connected to the vacuum channel 11 through the connecting hole 22.

[0043] The alignment structure 14 includes a first protrusion 141, which is disposed on the wall of the connecting hole 22. A groove 142 is formed on the support column 12, and the first protrusion 141 engages with the support column 12 at the groove 142. Specifically, the first protrusion 141 is a rectangular convex strip, and the groove 142 is a rectangular groove adapted to the first protrusion 141. It is understood that this is not a specific limitation on the shape of the first protrusion 141 and the groove 142; those skilled in the art can make substitutions based on this. Furthermore, multiple grooves 142 are provided, spaced apart along the outer edge of the support column 12, which helps to improve the stability of the alignment and engagement between the collar 2 and the support column 12.

[0044] The alignment structure 14 is simple in structure and easy to operate, which makes it easy for operators to quickly align the lens with the base 1 and can reduce the impact of human factors on the alignment accuracy of the lens.

[0045] Please see Figures 3-6 In a preferred embodiment, the support column 12 is detachably connected to the base 13. The support column 12 can be replaced with different sizes according to the lens measurement requirements of different projects. The support column 12 is flexible and adaptable to lenses of different sizes or shapes, making it convenient to use. In some specific embodiments, the base 13 has a slot 131 for inserting the support column 12. The base 13 has a second protrusion 132 on the inner wall of the slot 131, which engages with the support column 12 at the groove 142. Before lens measurement, the operator selects the support column 12 corresponding to the project and inserts it into the slot 131. The base 1 can be quickly assembled and disassembled. The measuring equipment then selects the corresponding program to perform lens measurement for the corresponding project, which facilitates quick project switching and improves measurement efficiency.

[0046] In some other specific embodiments, the support column 12 can be magnetically connected to the base 13. The support column 12 is inserted into the slot 131 and magnetically attracted to the base 13, so that the support column 12 can be quickly assembled and disassembled from the base 1.

[0047] Example 3:

[0048] The difference between this embodiment and the above embodiments is that this embodiment makes further structural optimizations to the support column 12 and the collar 2 of this utility model. Please refer to [link / reference]. Figures 5-7 .

[0049] Please see Figure 5 and Figure 6In this embodiment, the support column 12 includes a connecting end 121, and a collar 2 is sleeved on the connecting end 121. The connecting end 121 has an expansion groove 122, which is connected to the vacuum channel 11. Specifically, the expansion groove 122 can be a circular groove 142. The diameter of the expansion groove 122 is larger than the diameter of the vacuum channel 11. The expansion groove 122 helps to increase the vacuum adsorption surface of the support column 12, which can improve the stability of lens adsorption and further ensure that the lens does not shift during measurement.

[0050] Please see Figure 7 In a preferred embodiment, the alignment groove 21 is a stepped groove 142. The alignment groove 21 includes an upper groove 211 and a lower groove 212. The upper groove 211 and the lower groove 212 respectively accommodate lenses of different sizes. The collar 2 can accommodate more lenses of different sizes, which can improve the flexibility of use.

[0051] In a preferred embodiment, the upper groove 211 is a square groove 142, the lower groove 212 is a circular groove 142, and the collar 2 is a universal collar 2 for both square and circular lenses, which can reduce material waste and improve versatility. In some other specific embodiments, both the upper groove 211 and the lower groove 212 can be either circular or square grooves 142, in which case the collar 2 is a universal collar 2 for lenses of different sizes.

[0052] Example 4:

[0053] Based on the above embodiments, this embodiment provides a lens measuring device.

[0054] The lens measuring device of this embodiment includes the aforementioned lens positioning fixture. A probe is provided on one side of the support column 12. After the lens is fixed by the lens positioning fixture, the measurement program is started. The probe moves and performs point-to-point measurements on the lens surface to simulate the lens's contour. The center of the lens is aligned with the center of the base 1, ensuring consistent reference for the probe measurement, thus improving measurement accuracy and the precision of the measurement results. After measuring one side of the lens, the lens is flipped over to measure the other side.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0057] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0058] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A lens positioning fixture, characterized in that, include A base (1) having a vacuum channel (11) through which the lens is adsorbed; and The collar (2) has an alignment groove (21) for accommodating the lens. The alignment groove (21) is adapted to the lens. When the collar (2) is fitted onto the base (1), the lens is aligned with the base (1). The alignment groove (21) is connected to the vacuum channel (11).

2. The lens positioning fixture according to claim 1, characterized in that, The base (1) includes a seat body (13) and a support column (12), and an alignment structure (14) is provided between the collar (2) and the support column (12).

3. The lens positioning fixture according to claim 2, characterized in that, The collar (2) has a connecting hole (22), and the alignment groove (21) is connected to the vacuum channel (11) through the connecting hole (22); The alignment structure (14) includes a first external protrusion (141), which is disposed on the wall of the connecting hole (22). The support column (12) has a groove (142), and the first external protrusion (141) is engaged with the support column (12) at the groove (142).

4. The lens positioning fixture according to claim 3, characterized in that, The support column (12) is detachably connected to the base (13).

5. The lens positioning fixture according to claim 4, characterized in that, The seat (13) has a slot (131) for inserting the support column (12). The seat (13) has a second external protrusion (132) on the inner wall of the slot (131). The second external protrusion (132) is inserted into the groove (142) to engage with the support column (12).

6. The lens positioning fixture according to claim 3, characterized in that, The grooves (142) are provided in multiple ways, and the multiple grooves (142) are distributed at intervals along the outer edge of the support column (12).

7. The lens positioning fixture according to claim 2, characterized in that, The support column (12) includes a connecting end (121), the collar (2) is fitted onto the connecting end (121), and the connecting end (121) has an enlarged groove (122) that is connected to the vacuum channel (11).

8. The lens positioning fixture according to claim 1, characterized in that, The alignment groove (21) is a stepped groove (142). The alignment groove (21) includes an upper groove body (211) and a lower groove body (212). The upper groove body (211) and the lower groove body (212) respectively accommodate the lenses of different sizes.

9. The lens positioning fixture according to claim 8, characterized in that, The upper groove (211) is a square groove (142), and the lower groove (212) is a circular groove (142).

10. A lens measuring device, characterized in that, Includes the lens positioning fixture as described in any one of claims 1-9.

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