A device for observing defects in a cemented lens

Abstract

The utility model discloses a kind of glued lens defect observation devices, including instrument base, the side of instrument base top is bolted with stand column support, the inside rotation of stand column support is connected with lifting lead screw, the surface thread sleeve of lifting lead screw is connected with the up and down adjusting lifting lead screw of instrument base sliding, the top of instrument base is provided with the sample stage of up and down adjusting lifting lead screw bolted with, the inside of sample stage is provided with linear slide rail, the inside sliding of linear slide rail is connected with lens deposit tray.Through rotating transverse displacement screw rod and sample stage thread engagement makes that lens deposit tray can be in linear slide rail left and right sliding, to glued lens is adjusted left and right in this way.By rotating driving conical round base, it drives support conical round base to rotate in lens deposit tray, so that glued lens rotates in lens deposit tray, and then the different positions of glued lens top are observed.

Description

Technical Field

[0001] This utility model belongs to the field of cemented lens technology, and specifically relates to a device for observing defects in cemented lenses. Background Technology

[0002] Cemented lenses are composite optical elements formed by bonding two or more lenses together using optical bonding technology. They are widely used in high-end imaging equipment, such as microscopes, camera lenses, and optical measuring instruments. Their main function is to correct chromatic aberration and aberrations in optical systems, thereby significantly improving image quality and optical performance.

[0003] However, during the manufacturing process of cemented lenses, the presence of air bubbles, impurities, or uneven bonding can easily lead to micro-defects such as pitting and feather-like textures inside the lens, affecting the uniformity of light transmission and imaging performance. Currently, common inspection methods mainly rely on low-magnification microscopes or digital magnification equipment for manual inspection of the lenses to identify flaws that are difficult to observe directly with the naked eye.

[0004] For example, Chinese utility model patent CN220819786U discloses a testing device for the bonding strength of cemented lenses, reflecting some of the quality inspection needs in this field. However, in actual defect observation, most low-magnification microscopes still use the traditional stage clamping structure to fix cemented lenses. This clamping method is not only prone to scratching the lens surface during operation, causing secondary damage, but also makes it difficult to flexibly adjust the lens position once fixed. If other areas need to be observed, the lens must be removed and re-clamped, which is cumbersome, inefficient, and increases the risk of contamination or damage from human contact.

[0005] Therefore, existing technologies still have significant shortcomings in non-destructive, comprehensive, and efficient defect detection of cemented lenses, and there is an urgent need for a more professional and flexible observation device to meet the quality control requirements of modern optical manufacturing. Utility Model Content

[0006] The purpose of this invention is to provide a device for observing defects in cemented lenses. Its advantage is that it facilitates the movement of the cemented lens at the bottom of the eyepiece, making it convenient to observe defects at different positions of the cemented lens.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a device for observing defects in cemented lenses, comprising an instrument base, a column bracket bolted to one side of the top of the instrument base, a lifting guide screw rotatably connected inside the column bracket, an up-and-down adjusting lifting guide screw slidably connected to the instrument base and threaded on the surface of the lifting guide screw, a sample stage bolted to the up-and-down adjusting lifting guide screw on the top of the instrument base, a linear slide rail inside the sample stage, a lens mounting plate slidably connected inside the linear slide rail, a light-transmitting lens being bonded to the bottom of the lens mounting plate, and a transverse displacement rotary rod rotatably connected to the lens mounting plate and threaded through one side of the sample stage.

[0008] The above technical solution involves: rotating a lateral displacement rod that engages with the sample stage thread, allowing the lens mounting plate to slide laterally within a linear guide rail, thus adjusting the cemented lens left and right. Rotating a drive conical base and a support conical base within the lens mounting plate allows the cemented lens to rotate, enabling observation of different positions on the top of the lens. By placing the cemented lens inside the lens mounting plate, the support and drive conical bases support its bottom, ensuring stable placement and preventing contact with the top and bottom lenses, thus avoiding wear. Because the support and drive conical bases are conical, they can support even small-diameter cemented lenses, making them suitable for a wider range of lens sizes.

[0009] The present invention is further configured such that four supporting conical seats are symmetrically rotatably connected to the inner surface of the lens mounting plate, and a driving conical seat is rotatably connected to the side of the inner surface of the lens mounting plate away from the lateral displacement rod. A rotating shaft that is rotatably connected to the lens mounting plate is welded to the top of the driving conical seat.

[0010] The above technical solution involves rotating a conical base and supporting the conical base inside a lens mounting plate, allowing the cemented lens to rotate within the plate, thus enabling observation of different positions on the top of the cemented lens.

[0011] The present invention is further configured such that a lifting handwheel, which is rotatably connected to the column bracket, is bolted to the top of the lifting guide screw.

[0012] The above technical solution involves rotating the lifting handwheel to drive the lifting guide screw to rotate inside the column support.

[0013] The present invention is further provided that a scale is marked on the side of the sample stage top away from the up-down adjustment guide screw.

[0014] The above technical solution is used to observe the left and right sliding position of the lens mounting plate, thereby enabling convenient and precise adjustments.

[0015] The present invention is further configured such that a supplementary light is bolted to the top of the instrument base, and a switch bolted to the instrument base is electrically connected to one side of the supplementary light.

[0016] The above technical solution involves turning on the supplementary light via a control switch to illuminate the bottom of the lens mounting plate, making it easier to observe air bubbles and pits inside the cemented lens after the light passes through it.

[0017] The present invention is further configured such that an eyepiece is bolted to the top of the column support away from the lifting guide screw, and a converter is rotatably connected to the bottom of the column support near the eyepiece. An objective lens that works in conjunction with the eyepiece is bolted to the bottom of the converter.

[0018] By employing the above technical solution, the cemented lens placed on top of the lens mounting plate is magnified through an eyepiece and a converter, allowing observation of details such as bubbles and pits that are difficult to see directly with the naked eye.

[0019] The present invention is further configured such that the tops of the supporting conical seat and the driving conical seat are both fixedly connected to the lens mounting plate by magnetic attraction rings that attract each other magnetically.

[0020] The above technical solution involves using magnetic fixing rings to attract each other, fixing the driving conical seat and the supporting conical seat inside the lens mounting plate, thus preventing the supporting conical seat and the driving conical seat from rotating automatically.

[0021] The present invention is further configured such that the surface of the driving conical seat supporting the conical seat is covered with an anti-slip rubber sleeve.

[0022] The above technical solution increases surface friction, thereby increasing the stability of the cemented lens rotation.

[0023] In summary, this utility model has the following beneficial effects:

[0024] 1. By rotating the transverse displacement rotor and engaging it with the sample stage thread, the lens mounting plate can slide to both sides inside the linear slide rail, thereby adjusting the cemented lens left and right. By rotating the driving conical seat and supporting the conical seat to rotate inside the lens mounting plate, the cemented lens can be rotated on the lens mounting plate, allowing observation of different positions on the top of the cemented lens;

[0025] 2. By placing the cemented lens inside the lens mounting tray, the bottom of the cemented lens is supported by the supporting conical base and the driving conical base, ensuring the cemented lens is placed stably and without contact with the top and bottom lenses, thus avoiding wear. Because the supporting and driving conical bases are conical, they can support even small-diameter cemented lenses, making them suitable for a wider range of sizes. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a partial structural schematic diagram of the present invention;

[0028] Figure 3 This is a cross-sectional view of the sample stage structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the drive conical seat structure of this utility model.

[0030] Reference numerals: 1. Instrument base; 2. Column support; 3. Lifting guide screw; 4. Sample stage; 5. Up and down adjusting lifting guide screw; 6. Linear slide rail; 7. Lens mounting plate; 8. Transmitting lens; 9. Lateral displacement rotary rod; 10. Supporting conical seat; 11. Driving conical seat; 12. Rotating shaft; 13. Supplemental light; 14. Switch; 15. Eyepiece; 16. Converter; 17. Objective lens; 18. Lifting handwheel; 19. Scale; 20. Magnetic retaining ring; 21. Anti-slip rubber sleeve. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As an embodiment of this utility model, the purpose is to achieve non-destructive, accurate and multi-angle observation of the surface and internal defects of cemented lenses.

[0033] In specific implementation, refer to Figure 1 - Figure 4 A device for observing defects in cemented lenses is proposed, comprising an instrument base 1, with a column bracket 2 bolted to one side of the top of the instrument base 1 for supporting the optical and adjustment system. A lifting guide screw 3 is rotatably connected inside the column bracket 2, and an up-and-down adjusting lifting guide screw 5 is threadedly sleeved on the surface of the lifting guide screw 3 and slidably connected to the instrument base 1.

[0034] Furthermore, a sample stage 4 is provided on the top of the instrument base 1. The sample stage 4 is bolted to the up and down adjusting guide screw 5, so that the entire sample stage 4 can be smoothly raised and lowered by rotating the lifting guide screw 3.

[0035] Furthermore, to achieve horizontal movement of the lens under test, a linear slide rail 6 is provided inside the sample stage 4. A lens mounting plate 7 is slidably connected inside the linear slide rail 6. A light-transmitting lens 8 is bonded to the bottom of the lens mounting plate 7 to allow light to pass through the lens from bottom to top. A transverse displacement rod 9, which is rotatably connected to the lens mounting plate 7, is threaded through one side of the sample stage 4. This rod and the lens mounting plate 7 form a rotating pair. By rotating the transverse displacement rod 9 and engaging it with the threaded connection of the sample stage 4, the lens mounting plate 7 can slide to both sides inside the linear slide rail 6, thereby adjusting the cemented lens left and right.

[0036] To further accommodate lenses of different sizes and enable in-situ rotation, four freely rotatable conical support bearings 10 are symmetrically arranged on the inner surface of the lens mounting plate 7, and a conical drive bearing 11 is provided on one side. By rotating the drive conical bearing 11 and the support conical bearing 10, the cemented lens can be rotated within the lens mounting plate 7, allowing observation of different positions on the top of the cemented lens. By placing the cemented lens inside the lens mounting plate 7, the support conical bearing 10 and the drive conical bearing 11 support the bottom of the cemented lens, ensuring stable placement without contact with the top and bottom lenses, thus preventing wear. Because the support conical bearing 10 and the drive conical bearing 11 are conical, they can support even small-diameter cemented lenses, making them suitable for a wider range of sizes.

[0037] In one embodiment of this utility model, reference is made to Figure 1 , Figure 3 , Figure 4 The inner surface of the lens mounting plate 7, away from the lateral displacement lever 9, is rotatably connected to a drive conical seat 11. A rotating shaft 12, rotatably connected to the lens mounting plate 7, is welded to the top of the drive conical seat 11. By rotating the drive conical seat 11 and supporting the conical seat 10 within the lens mounting plate 7, the cemented lens can rotate within the lens mounting plate 7, allowing observation of different positions on the top of the cemented lens.

[0038] In one embodiment of this utility model, for further ease of operation, refer to Figure 1 , Figure 2 The top of the lifting guide screw 3 is bolted with a lifting handwheel 18 that is rotatably connected to the column bracket 2. By rotating the lifting handwheel 18, the lifting guide screw 3 is driven to rotate inside the column bracket 2, thereby achieving precise focus adjustment.

[0039] In one embodiment of this utility model, to quantify the horizontal movement distance, reference is made to... Figure 1 , Figure 3A scale 19 is marked on the side of the sample stage 4 away from the vertical adjustment guide screw 5. This scale is used to observe the left and right sliding position of the lens mounting plate 7, thus enabling convenient and precise adjustment.

[0040] In one embodiment of this utility model, to enhance the clarity of defect observation, reference is made to... Figure 1 , Figure 2 A supplementary light 13 is bolted to the top of the instrument base 1, and a switch 14, which is also bolted to the instrument base 1, is electrically connected to one side of the supplementary light 13. By controlling the switch 14 to turn on the supplementary light 13, the bottom of the lens mounting plate 7 is illuminated, making it easier to observe the bubbles and pits inside the cemented lens after the light passes through it.

[0041] In one embodiment of this invention, it is understood that the observation imaging system of this device is composed of an eyepiece 15, an objective lens converter 16, and an objective lens 17. The purpose is that by switching between objective lenses 17 with different magnifications, a magnified image can be formed in conjunction with the eyepiece 15, allowing the operator to clearly observe microscopic defects smaller than 0.1 mm.

[0042] In specific implementation, refer to Figure 1 , Figure 2 An eyepiece 15 is bolted to the top of the support column 2, away from the lifting guide screw 3. A converter 16 is rotatably connected to the bottom of the support column 2, near the eyepiece 15. An objective lens 17, which works in conjunction with the eyepiece 15, is bolted to the bottom of the converter 16. By magnifying the cemented lens placed on top of the lens mounting plate 7 through the eyepiece 15 and the converter 16, details such as bubbles and pitting that are difficult to observe directly with the naked eye and are smaller than 0.1 mm can be observed.

[0043] In one embodiment of this utility model, to fix the bearing component and prevent it from sliding on its own, refer to... Figure 4 Both the top of the supporting conical seat 10 and the driving conical seat 11 are fixedly connected to the lens mounting plate 7 by magnetic attraction rings 20 that attract each other magnetically. The magnetic attraction rings 20 attract each other to fix the driving conical seat 11 and the supporting conical seat 10 inside the lens mounting plate 7, preventing the supporting conical seat 10 and the driving conical seat 11 from rotating automatically.

[0044] In one embodiment of this utility model, reference is made to Figure 4 The surface of the driving conical seat 11 supporting the conical seat 10 is covered with an anti-slip rubber sleeve 21. This increases surface friction and improves the stability of rotating the cemented lens.

[0045] Brief description of the usage process: By placing the cemented lens inside the lens mounting tray 7, the bottom of the cemented lens is supported by the supporting conical seat 10 and the driving conical seat 11, ensuring the cemented lens is placed stably without contacting the top and bottom lenses, thus avoiding wear. Because the supporting conical seat 10 and the driving conical seat 11 are conical, they can support even small-diameter cemented lenses, making them suitable for a wider range of lens sizes. Then, by rotating the lifting guide screw 3 to engage with the upper and lower adjusting lifting guide screw 5, the height of the instrument base 1 on the sample stage 4 is adjusted, allowing the eyepiece 15 and objective lens 17 to be accurately focused on the cemented lens. The supplementary light 13 is then turned on to illuminate the bottom, allowing light to pass through the light-transmitting lens 8 and onto the cemented lens. This allows details such as bubbles and pitting inside the cemented lens, which are difficult to observe directly with the naked eye, to be magnified and observed through the eyepiece 15 and objective lens 17. When it is necessary to adjust the movement of the cemented lens on the top of the lens mounting plate 7, the lens mounting plate 7 can slide to both sides inside the linear slide rail 6 by rotating the transverse displacement rod 9 and engaging it with the sample stage 4, thereby adjusting the cemented lens left and right. By rotating the drive cone seat 11 and supporting the cone seat 10 to rotate inside the lens mounting plate 7, the cemented lens can be rotated on the lens mounting plate 7, and then different positions on the top of the cemented lens can be observed.

[0046] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0047] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A device for observing defects in cemented lenses, comprising an instrument base (1), characterized in that: A column bracket (2) is bolted to one side of the top of the instrument base (1). A lifting guide screw (3) is rotatably connected inside the column bracket (2). An up-and-down adjusting lifting guide screw (5) is threaded onto the surface of the lifting guide screw (3) and slidably connected to the instrument base (1). A sample stage (4) is bolted to the up-and-down adjusting lifting guide screw (5) at the top of the instrument base (1). A linear slide rail (6) is provided inside the sample stage (4). A lens mounting plate (7) is slidably connected inside the linear slide rail (6). The bottom of the lens mounting plate (7) is open and a light-transmitting lens (8) is attached to it. One side of the sample stage (4) is threadedly connected to a transverse displacement rotor (9) that is rotatably connected to the lens mounting plate (7). Four supporting conical seats (10) are symmetrically rotatably connected to the inner surface of the lens mounting plate (7). A driving conical seat (11) is rotatably connected to the side of the inner surface of the lens mounting plate (7) away from the transverse displacement rotor (9). A rotating shaft (12) that is rotatably connected to the lens mounting plate (7) is welded to the top of the driving conical seat (11).

2. The device for observing defects in cemented lenses according to claim 1, characterized in that: The top of the lifting guide screw (3) is bolted with a lifting handwheel (18) that is rotatably connected to the column bracket (2).

3. The device for observing defects in cemented lenses according to claim 1, characterized in that: The sample stage (4) has a scale (19) marked on the side away from the up and down adjustment guide screw (5) on the top.

4. The device for observing defects in cemented lenses according to claim 1, characterized in that: A supplementary light (13) is bolted to the top of the instrument base (1), and a switch (14) bolted to the instrument base (1) is electrically connected to one side of the supplementary light (13).

5. The device for observing defects in a cemented lens according to claim 2, characterized in that: An eyepiece (15) is bolted to the top of the column support (2) away from the lifting guide screw (3), and a converter (16) is rotatably connected to the bottom of the column support (2) near the eyepiece (15). An objective lens (17) that works in conjunction with the eyepiece (15) is bolted to the bottom of the converter (16).

6. The device for observing defects in cemented lenses according to claim 1, characterized in that: The tops of the supporting conical seat (10) and the driving conical seat (11) are both fixedly connected to the lens mounting plate (7) by magnetic attraction rings (20) that attract each other magnetically.

7. The device for observing defects in cemented lenses according to claim 6, characterized in that: The surface of the driving conical seat (11) of the supporting conical seat (10) is covered with an anti-slip rubber sleeve (21).

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