An interferometer for optical lens testing

Abstract

The utility model relates to a kind of interferometer for optical lens detection, belong to corneal molding lens detection equipment technical field, the interferometer for optical lens detection of this kind, including detection component, the detection component includes detection bin, one side fixed mounting has interferometer in the detection bin inside, the both ends of detection bin top side are respectively installed with temperature control mechanism and humidification mechanism, the output of humidification mechanism is connected with the inside of detection bin by connecting pipe and intercommunication, the structure design of detection component, drive component and adjusting component, the isolated detection function of corneal molding lens can be realized, reduce the influence when laboratory environment to corneal molding lens detection, guarantee the accuracy and practicality of later detection, and cooperate temperature control mechanism and humidification mechanism, corneal molding lens detection data under different environments can also be simulated, and then the accuracy of the interferometer later detection data can be further increased, reduce the cost of laboratory environment control.

Description

Technical Field

[0001] This utility model belongs to the technical field of corneal reshaping lens testing equipment, specifically relating to an interferometer for testing optical lenses. Background Technology

[0002] In the field of optical manufacturing, parameters such as the flatness and refractive index uniformity of optical lenses directly determine the imaging quality and performance of optical instruments. As the core equipment for detecting these key parameters, the accuracy, efficiency and environmental adaptability of interferometers are crucial to the development of the optical industry. Therefore, it is necessary to design an interferometer for optical lens testing.

[0003] Traditional interferometers are mostly used in semi-open testing spaces, where external air temperature and humidity can easily affect the interferometer, causing blurred interference fringes and requiring frequent shutdowns for cleaning, which affects the efficiency of subsequent testing. In addition, most interferometers rely solely on the overall environmental control of the laboratory (such as a constant temperature and humidity laboratory), but the laboratory environment is easily affected by external interference (such as the start and stop of air conditioning and personnel movement), resulting in large temperature fluctuations and making it difficult to guarantee the precision of subsequent testing. Utility Model Content

[0004] The purpose of this invention is to provide an interferometer for optical lens testing that is simple in structure and reasonably designed in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions: An interferometer for optical lens inspection includes a detection assembly. The detection assembly includes a detection chamber, an interferometer fixedly mounted on one side inside the detection chamber, a temperature control mechanism and a humidification mechanism respectively mounted at both ends of the top side of the detection chamber, the output end of the humidification mechanism being connected to the interior of the detection chamber via a connecting pipe, a drive assembly slidably extending into the back end of the detection chamber being fixedly mounted, an adjustment assembly placed inside the detection chamber being slidably connected to the side of the drive assembly near the interferometer, and a clamping assembly being fixedly mounted inside the adjustment assembly.

[0006] As a further optimization of this utility model, the driving component includes an electric push rod, which is fixedly installed on the top of one end of the back of the detection chamber. A U-shaped connecting rod is fixedly installed at the output end of the electric push rod, and the other end of the U-shaped connecting rod extends to the middle position inside the detection chamber. A sealing plate placed inside the detection chamber is fixedly installed at the other end of the U-shaped connecting rod, and the sealing plate slides and fits against the inside of the detection chamber.

[0007] As a further optimization of this utility model, the adjustment component includes a mounting slide plate that slides inside the detection chamber and is located on the side of the sealing plate away from the U-shaped connecting rod. An adjustment screw is rotatably mounted on one end of the mounting slide plate near the bottom of the sealing plate, and the adjustment screw is threaded through the interior of the sealing plate.

[0008] As a further optimization of this utility model, the clamping assembly includes a mounting hole opened in the middle of the mounting slide plate. Both ends of the mounting hole are slidably connected to arc-shaped clamping plates, and the two arc-shaped clamping plates cooperate with each other. Both ends of the mounting slide plate near the sealing plate are fixedly installed with internal threaded sleeves. The interior of the two internal threaded sleeves is threaded with adjusting screws. The ends of the two adjusting screws that are close to each other are rotatably connected to the two arc-shaped clamping plates.

[0009] As a further optimization of this utility model, a mounting base is fixedly installed at the middle position of both ends of the sealing plate near the mounting slide plate, and a reflector is rotatably installed at the end of the two mounting bases that are close to each other, and the reflector cooperates with the interferometer.

[0010] As a further optimization of this utility model, a guide rod is fixedly installed at one end of the back side of the mounting slide plate near the bottom of the sealing plate, and the guide rod slides through the interior of the sealing plate.

[0011] The beneficial effects of this utility model are as follows: The structural design of the detection component, drive component, and adjustment component of this utility model enables the isolation detection function of orthokeratology lenses, reduces the impact of the laboratory environment on orthokeratology lens detection, ensures the accuracy and practicality of subsequent detection, and, in conjunction with the temperature control mechanism and humidification mechanism, can simulate the detection data of orthokeratology lenses under different environments, thereby further increasing the accuracy of the subsequent detection data of the interferometer and reducing the cost of laboratory environment control.

[0012] This invention enables the sealing and isolation of the testing chamber through the drive component, and also facilitates the distance adjustment of the reflector. Furthermore, the adjustment component allows for distance adjustment during the orthokeratology lens testing process. This structural design facilitates multi-distance adjustment during the testing process, enabling the collection of orthokeratology lens testing data at different distances, ensuring the precision of subsequent orthokeratology lens testing. Moreover, the mechanism is simple and reasonable in design, making it easy for operators to adjust and use. Attached Figure Description

[0013] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a rear view of the overall structure of this utility model; Figure 3 This is a front sectional view of the overall structure of this utility model; Figure 4 This is the three-dimensional structure of the drive component of this utility model. Figure 1 ; Figure 5 This is the second three-dimensional structure of the drive component of this utility model; Figure 6 This is a utility model Figure 4 Enlarged view of point A in the middle.

[0014] In the diagram: 1. Detection component; 100. Detection chamber; 101. Interferometer; 102. Temperature control mechanism; 103. Humidification mechanism; 104. Connecting pipe; 2. Drive component; 200. Electric push rod; 201. U-shaped connecting rod; 202. Sealing plate; 3. Adjustment component; 300. Adjustment screw one; 301. Mounting slide plate; 4. Clamping component; 400. Adjustment screw two; 401. Internal threaded sleeve; 402. Arc-shaped clamping plate; 403. Mounting hole. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Example

[0016] like Figure 1 , Figure 2 , Figure 3 As shown, an interferometer for optical lens inspection includes a detection component 1, a drive component 2, an adjustment component 3, and a clamping component 4. The detection component 1 is the core space for inspection, integrating laser emission and environmental control functions. The drive component 2 provides horizontal movement power for the inspection component, achieving initial alignment between the lens and the laser optical path. The adjustment component 3 is used to fine-tune the lens position to ensure inspection accuracy. The clamping component 4 is responsible for fixing the optical lens to be inspected, preventing lens displacement during inspection. The four components are precisely connected mechanically and coordinated electronically to form a complete inspection process of "environmental control - position adjustment - lens fixing - laser inspection".

[0017] like Figure 1 , Figure 2 , Figure 3As shown, the detection component 1 includes a detection chamber 100, which is integrally formed from aerospace-grade aluminum alloy. The inner wall is coated with a matte anti-reflective coating to avoid stray light interfering with the detection results. A high-transparency quartz glass observation window is provided on the front, and scale lines are evenly distributed on one end of the observation window to facilitate the observation of interference fringes. An interferometer 101 is threadedly fixed to the middle position on one side of the detection chamber 100. The laser emission direction is horizontal to the right, directly facing the central area inside the detection chamber, providing a stable monochromatic light source for interference detection. Temperature control mechanism 102 and humidification mechanism 103 are fixedly installed at both ends of the top of the detection chamber 100 near the interferometer 101, respectively. Both are fixed by metal brackets and are symmetrically distributed. The temperature control mechanism 102 is a miniature semiconductor thermostat (temperature range 15-30℃, temperature control accuracy ±0.1℃), which contacts the inner wall of the detection chamber through a copper heat-conducting plate to adjust the temperature inside the chamber in real time. To prevent temperature fluctuations from affecting the optical performance of the lenses, the humidification mechanism 103 is an ultrasonic atomizing humidifier (humidification capacity adjustable from 0-50ml / h, humidity control accuracy ±2%RH). Its atomization output end is sealed and connected to the circular air inlet at the top of the detection chamber 100 via a connecting pipe 104 to regulate the humidity inside the chamber and prevent the dry environment from causing static electricity to attract dust to the lens surface. A high-precision temperature and humidity sensor (not shown in the figure) is installed in the corner of the top of the detection chamber 100 and is electrically connected to the controllers of the temperature control mechanism 102 and the humidification mechanism 103 via wires to form a closed-loop control, ensuring that the environmental parameters inside the chamber are stable within the required range for detection. The external surface of the detection chamber 100 is integrated with a control panel (not shown in the figure), which allows operators to control and connect the temperature control mechanism 102, the humidification mechanism 103, and the interferometer 101 and display data.

[0018] like Figure 2 , Figure 4 , Figure 5As shown, an electric push rod 200 is threadedly fixed to the top of the back of the detection chamber 100, on the side away from the interferometer, via a fixing plate. The output shaft of the push rod is horizontally to the left, consistent with the length direction of the detection chamber. The output end of the electric push rod 200 is threadedly connected to a U-shaped connecting rod 201 via a flange. The other end of the U-shaped connecting rod 201 is vertically bent and extends to the middle position inside the detection chamber 100. A sealing plate 202 is threadedly fixed to the end of the U-shaped connecting rod 201 inside the detection chamber 100. Fluororubber sealing rings are affixed around the sealing plate 202, allowing it to slide against the inner wall of the detection chamber 100. Driven by the electric push rod 200, the device moves smoothly along the inner wall of the detection chamber 100, ensuring that the sealed environment inside the detection chamber is not damaged. A reflector 203 is rotatably mounted on the middle position of the sealing plate 202 near the interferometer via an L-shaped mounting base. The reflector 203 is at a 45° angle to the laser beam emitted by the interferometer 101, which can reflect the horizontal laser beam to the right into a vertical direction or adjust the reflection angle according to the detection requirements, so that the laser accurately illuminates the surface of the lens to be tested. An angle adjustment knob is provided at one end of the L-shaped mounting base, which can finely adjust the pitch and deflection angle of the reflector to ensure accurate alignment of the optical path.

[0019] like Figure 4 , Figure 5 As shown, a mounting slide plate 301 is slidably placed inside the detection chamber 100 near the interferometer 101. The mounting slide plate 301 is in contact with the inner wall of the detection chamber through miniature guide wheels to ensure smooth and jam-free movement. An adjusting screw 300 is rotatably mounted on the front end of the bottom of the mounting slide plate 301 near the sealing plate 202 via a bearing. The end of the adjusting screw 300 away from the mounting slide plate 301 passes through the threaded hole at the corresponding position of the sealing plate 202 and is threadedly connected to the sealing plate. A circular adjusting handle with a knurled surface is installed at the end of the screw. Rotating the handle can drive the mounting slide plate 301 to move back and forth relative to the sealing plate 202. The direction of movement is perpendicular to the length direction of the detection chamber, so as to achieve precise alignment of the lens in the direction perpendicular to the optical path. A guide rod is fixedly installed on the back end of the bottom of the mounting slide plate 301 near the sealing plate 202. The end of the guide rod away from the mounting slide plate 301 slides through the guide hole at the corresponding position of the sealing plate 202 to form a double-point support structure to prevent the mounting slide plate from tilting or shifting during adjustment and to ensure movement accuracy.

[0020] like Figure 4 , Figure 5 , Figure 6As shown, a mounting hole 403 is provided in the middle of the mounting slide plate 301. The inner wall of the mounting hole 403 is polished smooth to avoid scratching the edge of the lens. Arc-shaped clamping plates 402 are slidably connected to both ends of the mounting hole 403. The arc-shaped clamping plates 402 are made of polytetrafluoroethylene. The arc-shaped clamping plates 402 are slidably connected to the mounting hole 403 by the cooperation of the limiting sleeves fixedly installed on the two ends of the mounting slide plate 301 away from the sealing plate 202 and the guide slide plate that slides through the two limiting sleeves. The two arc-shaped clamping plates 401 are symmetrically distributed and can slide along the radial direction of the mounting hole. The movement forms a ring-shaped clamping grip on the lens. The silicone anti-slip pad enhances friction and prevents excessive clamping force from damaging the lens surface. An internally threaded sleeve 401 is fixedly installed at the middle position of both ends of the mounting slide 301 near the sealing plate 202. The two internally threaded sleeves 401 are threaded through the interior of the two adjusting screws 400. One end of the adjusting screw 400 near the arc-shaped clamping plate 402 is rotatably connected to the arc-shaped clamping plate 402 through a thrust bearing, and the other end is equipped with a butterfly-shaped adjusting handle. Rotating the adjusting handle can drive the arc-shaped clamping plate 402 to move radially along the mounting hole. When the two screws are adjusted synchronously, lenses of different diameters can be clamped and fixed.

[0021] It should be noted that this interferometer for optical lens testing can, during use, move the U-shaped connecting rod 201 along its length inside the testing chamber 100 via the electric push rod 200. Simultaneously, the U-shaped connecting rod 201 pulls the sealing plate 202 and the adjusting assembly 3 out into the testing chamber 100. Then, the orthokeratology lens is placed inside the mounting hole 403. By rotating the adjusting screw 400, it moves within the internal threaded sleeve 401, which in turn pushes the arc-shaped clamping plate 402 within the mounting hole 403, thereby achieving the adjustment of the orthokeratology lens. The device is fixed and clamped. After clamping, the electric push rod 200 drives the U-shaped connecting rod 201 to move in the opposite direction, which allows the sealing plate 202 to slide the mounting slide plate 301 and above into the interior of the detection chamber 100. At the same time, the structural design of the sealing plate 202 can achieve the sealing of the interior of the detection chamber 100. The structural design of the electric push rod 200, U-shaped connecting rod 201 and sealing plate 202 can achieve the sealing of the interior of the detection chamber 100. At the same time, it can also facilitate the adjustment of the distance between the reflector 201 and the interferometer 101. Later, by rotating the adjusting screw 300, the mounting slide 301 is moved inside the testing chamber 100, thereby enabling flexible adjustment of the distance between the corneal reshaping lens and the interferometer 101 and the reflector 201 during testing. This allows operators to achieve test results at different distances and ensures the accuracy of subsequent tests. Simultaneously, the temperature control mechanism 102 and the humidification mechanism 103, along with temperature and humidity sensors, monitor the environmental parameters inside the testing chamber 100 in real time. This facilitates the testing results of the orthokeratology lens under different environments, further ensuring the accuracy of subsequent testing. Meanwhile, the beam output by the interferometer 101 is reflected by the mirror 203 and then illuminates the surface of the orthokeratology lens. Part of the light is reflected from the upper surface of the lens to form a "reference light," while the other part penetrates the lens and is reflected from the lower surface to form an "object light." The two beams meet within the testing chamber and interfere, forming alternating bright and dark interference fringes. The shape, spacing, and distribution of the interference fringes can be directly observed through the observation window, or images of the interference fringes can be captured by a high-definition industrial camera and transmitted to a computer for image processing and analysis. Parameters such as the lens's flatness error and refractive index uniformity are calculated to determine whether the lens meets quality standards.

[0022] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An interferometer for optical lens inspection, comprising an inspection assembly (1), the inspection assembly (1) comprising an inspection chamber (100), an interferometer (101) fixedly mounted on one side inside the inspection chamber (100), a temperature control mechanism (102) and a humidification mechanism (103) respectively mounted on both ends of the top side of the inspection chamber (100), the output end of the humidification mechanism (103) being connected to the interior of the inspection chamber (100) via a connecting pipe (104), characterized in that, A drive assembly (2) that slides into the back of the detection chamber (100) is fixedly installed at one end. An adjustment assembly (3) located inside the detection chamber (100) is slidably connected to the side of the drive assembly (2) near the interferometer (101). A clamping assembly (4) is fixedly installed inside the adjustment assembly (3).

2. The interferometer for optical lens inspection according to claim 1, characterized in that: The drive assembly (2) includes an electric push rod (200), which is fixedly installed on the top of one end of the back of the detection chamber (100). A U-shaped connecting rod (201) is fixedly installed at the output end of the electric push rod (200), and the other end of the U-shaped connecting rod (201) extends to the middle position inside the detection chamber (100). A sealing plate (202) placed inside the detection chamber (100) is fixedly installed at the other end of the U-shaped connecting rod (201), and the sealing plate (202) slides and fits against the inside of the detection chamber (100).

3. An interferometer for optical lens inspection according to claim 2, characterized in that: The adjustment assembly (3) includes a mounting plate (301) that slides inside the detection chamber (100) and is located on the side of the sealing plate (202) away from the U-shaped connecting rod (201). An adjustment screw (300) is rotatably mounted on one end of the mounting plate (301) near the bottom of the sealing plate (202). The adjustment screw (300) is threaded through the interior of the sealing plate (202).

4. An interferometer for optical lens inspection according to claim 3, characterized in that: The clamping assembly (4) includes a mounting hole (403) located in the middle of the mounting slide plate (301). Both ends of the mounting hole (403) are slidably connected to arc-shaped clamping plates (402), and the two arc-shaped clamping plates (402) cooperate with each other. Both ends of the mounting slide plate (301) near the sealing plate (202) are fixedly installed with internal threaded sleeves (401). The two internal threaded sleeves (401) are threaded through the interior of the two internal threaded sleeves (401), and the two adjusting screws (400) are rotatably connected to the two arc-shaped clamping plates (402) at their closest ends.

5. An interferometer for optical lens inspection according to claim 3, characterized in that: The sealing plate (202) is fixedly mounted with a mounting base at the middle position of both ends near the mounting slide plate (301). A reflector (203) is rotatably mounted at the end of the two mounting bases that are close to each other, and the reflector (203) cooperates with the interferometer (101).

6. An interferometer for optical lens inspection according to claim 3, characterized in that: A guide rod is fixedly installed on one end of the bottom of the mounting slide plate (301) near the sealing plate (202), and the guide rod slides through the interior of the sealing plate (202).

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