Test apparatus

Abstract

This utility model belongs to the field of optical equipment technology and discloses a test device, which includes a chamber, a heating component, and an image measuring instrument. Transparent observation windows are correspondingly provided on opposite side walls of the chamber. The lens frame to be tested is placed inside the chamber and faces the observation windows. The heating component is located inside the chamber and spaced apart from the lens frame to be tested, and the heating component can raise the temperature inside the chamber. The image measuring instrument is located outside the chamber and faces the observation windows. The image measuring instrument is used to measure the inner diameter of the lens frame to be tested inside the chamber. This test device can accurately measure the change of the lens frame's inner diameter under high and low temperature conditions to meet the optical performance requirements of the lens after subsequent lens frame assembly and the user's usage needs.

Description

Technical Field

[0001] This utility model relates to the field of optical equipment technology, and in particular to a testing device. Background Technology

[0002] In the field of security monitoring, one of the core functions of the lens frame is to accurately position and fix the internal lens group to prevent it from shifting, thereby ensuring image quality.

[0003] Currently, security lenses generally adopt a glass-plastic hybrid structure, with the frame material mostly being a polycarbonate and glass fiber (PC+GF) composite material. However, due to the limited thermophysical properties of PC+GF material, the inner diameter of the frame changes significantly with increasing temperature under high-temperature conditions. This thermally induced deformation directly causes the fit between the lens and the frame (such as gaps and stress) to deviate from the design values, thus affecting the optical performance stability and image quality of the lens. Existing high and low temperature testing equipment can only measure changes in the height of the frame, not changes in the inner diameter, which can easily lead to lenses assembled with the frame failing to meet user requirements.

[0004] Therefore, there is an urgent need for an experimental device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a testing device that can accurately measure the change of the inner diameter of the lens frame under high and low temperature conditions, so as to meet the optical performance of the lens after subsequent lens frame assembly and the user's usage needs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The test apparatus includes:

[0008] The box has transparent observation windows on its opposite side walls. The test mirror frame is placed in the inner cavity of the box and faces the observation windows.

[0009] A heating component is disposed in the inner cavity of the chamber and spaced apart from the mirror frame to be tested. The heating component can raise the temperature in the inner cavity of the chamber.

[0010] An image measuring instrument is installed outside the housing and directly opposite the observation window. The image measuring instrument is used to measure the inner diameter of the frame to be measured inside the housing.

[0011] Optionally, the heating assembly includes a heating element and a heat dissipation fixture, the heating element being disposed on the heat dissipation fixture, and the heat dissipation fixture being installed on the inner wall of the housing.

[0012] Optionally, the heating assembly further includes a first temperature detection element, which is mounted on the heat dissipation fixture and spaced apart from the heating element. The first temperature detection element is used to detect the temperature of the heat dissipation fixture.

[0013] Optionally, the testing device further includes an air supply component, which is installed in the inner cavity of the housing and spaced apart from the heating component on the side away from the test mirror frame. The air supply component is capable of blowing air onto the heating component.

[0014] Optionally, the box body is further provided with a heat insulation layer, which is attached to the inner wall of the box body.

[0015] Optionally, the testing apparatus further includes a second temperature sensor, which is disposed inside the chamber and located on the side of the mirror frame to be tested away from the heating assembly. The second temperature sensor is capable of detecting the temperature inside the chamber.

[0016] Optionally, the enclosure includes a top wall, a bottom wall, and side walls, the top wall, the bottom wall, and the side walls forming an inner cavity of the enclosure, and the two observation windows are respectively disposed on the top wall and the bottom wall.

[0017] Optionally, the enclosure further includes a door, and an opening is provided on the side wall. The mirror frame to be tested is placed into or taken out of the inner cavity of the enclosure through the opening. The door is rotatably connected to the side wall to seal the opening.

[0018] Optionally, a sealing element is provided on the periphery of the box door, and the sealing element is sandwiched between the box door and the side wall.

[0019] Optionally, one end of the door is hinged to the side wall, and the other end of the door is connected to the side wall via a locking device.

[0020] The beneficial effects of this utility model are:

[0021] The testing apparatus provided by this utility model includes a chamber, a heating component, and an image measuring instrument. Transparent observation windows are provided on opposite side walls of the chamber. The lens frame to be tested is placed inside the chamber, facing the observation windows. The lens frame can be observed and measured inside the chamber through the transparent observation windows. The heating component is located inside the chamber and spaced apart from the lens frame. The heating component raises the temperature inside the chamber, simulating the deformation of the lens frame's inner diameter at high temperatures. The image measuring instrument is located outside the chamber, facing the observation windows, and is used to measure the inner diameter of the lens frame inside the chamber. The image measuring instrument can measure the inner diameter of the lens frame at room temperature, when the temperature is raised to a preset temperature, and after the temperature drops back to room temperature, thus accurately determining the change in the inner diameter of the lens frame under high and low temperature conditions. This ensures the stability of the lens's optical performance after subsequent lens assembly and meets the user's needs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the testing device provided in this embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the experimental device provided in an embodiment of the present invention from one perspective;

[0025] Figure 3 This is a schematic diagram of the experimental device provided in an embodiment of the present invention from another perspective.

[0026] In the picture:

[0027] 100. The lens frame to be tested;

[0028] 1. Enclosure; 11. Observation window; 111. Transparent window; 112. Cover; 12. Insulation layer; 13. Top wall; 14. Bottom wall; 15. Side wall; 16. Enclosure door; 17. Hinges; 18. Locking device;

[0029] 2. Heating assembly; 21. Heating element; 22. Heat dissipation fixture; 23. First temperature monitoring element; 24. Support column;

[0030] 3. Air supply components;

[0031] 4. Second temperature detection element; 41. Heat insulation board. Detailed Implementation

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] 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. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] 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.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "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 used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can 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 top" of the second 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 second 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.

[0039] In the description of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this utility model, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] This embodiment provides a testing apparatus capable of conducting high and low temperature tests on the frame of an optical lens. Specifically, as shown in the example... Figure 1 As shown, the test apparatus includes a chamber 1, a heating assembly 2, and an image measuring instrument (not shown).

[0042] The chamber 1 has transparent observation windows 11 on its opposite side walls. The mirror frame 100 to be tested is placed inside the chamber 1, facing the observation windows 11. A heating assembly 2 is located inside the chamber 1, spaced apart from the mirror frame 100, and raises the temperature inside the chamber 1. An image measuring instrument is located outside the chamber 1, facing the observation windows 11, and is used to measure the inner diameter of the mirror frame 100 inside the chamber 1. The mirror frame 100 can be observed and measured inside the chamber 1 through the transparent observation windows 11. The heating assembly 2 raises the temperature inside the chamber 1, simulating the deformation of the inner diameter of the mirror frame 100 at high temperatures. During the measurement, the inner diameter of the lens frame 100 under test is measured at room temperature, when the temperature is raised to a preset temperature, and after the temperature drops back to room temperature. This allows for an accurate determination of the change in the inner diameter of the lens frame 100 under high and low temperature conditions, thereby ensuring the optical performance of the lens and the user's needs after the lens frame is assembled.

[0043] In this embodiment, the image measuring instrument is preferably a 2.5D image measuring instrument. A 2.5D image measuring instrument is a precision measuring device upgraded from a 2D image measuring instrument. It achieves three-dimensional geometric parameter measurement by adding probes. The 2.5D image measuring instrument can be used to measure angles, diameters, radii, distances from points to lines, eccentricity of two circles, and distances between two points, etc.

[0044] like Figures 1-3 As shown, the enclosure 1 includes a top wall 13, a bottom wall 14, and side walls 15, which together form the inner cavity of the enclosure 1. In this embodiment, the enclosure 1 has a cuboid frame structure. The enclosure 1 is made of multiple aluminum plates fastened together with screws to ensure the structural strength and stability of the enclosure 1.

[0045] Specifically, two observation windows 11 are respectively disposed on the top wall 13 and the bottom wall 14 of the housing 1. Each observation window 11 includes a transparent window 111 and a cover 112. The top wall 13 and bottom wall 14 of the housing 1 are symmetrically provided with mounting holes, and the transparent window 111 is mounted at the mounting hole via the cover 112. For example, the transparent window 111 can be made of glass or transparent acrylic, etc., to ensure that the human eye and the image measuring instrument can observe the frame 100 to be tested inside the housing 1 through the transparent window 111.

[0046] To be more specific, refer to Figure 2 The enclosure 1 also includes a door 16. An opening is provided on the side wall 15, and the door 16 is rotatably connected to the side wall 15 to seal the opening. During testing, the mirror frame 100 to be tested is inserted into or removed from the inner cavity of the enclosure 1 through the opening. By sealing the opening with the door 16, relative isolation between the inner cavity of the enclosure 1 and the outside environment can be ensured, thereby preventing heat loss from the enclosure 1.

[0047] In this embodiment, one end of the door 16 is hinged to the side wall 15 via a hinge 17, and the other end of the door 16 is connected to the side wall 15 via a locking member 18. The locking member 18 can be a locking block, which has two through holes. The side wall 15 and the door 16 each have two corresponding threaded holes. Bolts or screws pass through the through holes on the locking block and connect to the corresponding threaded holes, thereby achieving relative fixation between the door 16 and the side wall 15. Of course, in other embodiments, one end of the door 16 is hinged to the side wall 15 via a hinge 17, and the other end of the door 16 can also be fixed to the side wall 15 via a snap-fit ​​structure; this is not a limitation.

[0048] Furthermore, a sealing element is provided on the periphery of the door 16, and the sealing element is sandwiched between the door 16 and the side wall 15. For example, the sealing element may be a sealing ring. When the door 16 blocks the opening on the side wall 15, the sealing element is sandwiched between the periphery of the door 16 and the side wall 15, thereby effectively reducing the outflow of hot air from the enclosure 1.

[0049] Continue to refer to Figure 1 The heating assembly 2 includes a heating element 21 and a heat dissipation fixture 22. The heating element 21 is disposed on the heat dissipation fixture 22, which is installed on the inner wall of the housing 1. Specifically, the heating element 21 can be a heating rod as used in the prior art. It can heat up quickly by being powered on, thereby rapidly raising the temperature inside the housing 1. The heat dissipation fixture 22 can be a heat dissipation fin or the like, and after the heating element 21 heats up, the temperature can diffuse into the housing 1 through the heat dissipation fixture 22.

[0050] like Figure 1 and Figure 2 As shown, the side wall 15 of the housing 1 has connection holes. The heating assembly 2 also includes a support column 24. One end of the support column 24 is connected to the connection hole by screws, etc., and the other end of the support column 24 is connected to the heat dissipation fixture 22. The heating element 21 is located between the heat dissipation fixture 22 and the side wall 15 of the housing 1. This arrangement avoids direct contact between the heating element 21 and the heat dissipation fixture 22 and the housing 1, effectively preventing heat from flowing out and dissipating through the side wall of the housing 1.

[0051] Furthermore, a heat insulation layer 12 is also provided inside the enclosure 1, and the heat insulation layer 12 is attached to the inner wall of the enclosure 1. The heat insulation layer 12 can keep the inner cavity of the enclosure 1 warm, reduce heat loss and prevent the outside of the enclosure 1 from overheating.

[0052] More specifically, the heating assembly 2 also includes a first temperature detection element. The first temperature detection element is mounted on the heat dissipation fixture 22 and is spaced apart from the heating element 21. The first temperature detection element is used to detect the temperature of the heat dissipation fixture 22 while heating, thereby preventing the heating temperature from becoming too high and affecting the quality of the lens frame 100 under test. For example, the first temperature detection element 23 can be selected as a temperature sensor.

[0053] Optionally, continue to refer to Figure 1 The testing apparatus also includes an air supply component 3. The air supply component 3 is installed inside the chamber 1 and is spaced apart on the side of the heating assembly 2 facing away from the mirror frame 100 under test. The air supply component 3 can blow air onto the heating assembly 2 to create air convection within the chamber 1, accelerating the conduction of temperature inside the chamber 1. Exemplarily, the air supply component 3 can be a fan or blower, etc.

[0054] Optionally, the testing apparatus further includes a second temperature sensor 4. The second temperature sensor 4 is disposed inside the chamber 1 and located on the side of the mirror frame 100 to be tested away from the heating assembly 2. Specifically, a temperature measuring hole is provided on the side wall 15 of the chamber 1, and the second temperature sensor 4 is installed in the temperature measuring hole via a heat insulation plate 41. The second temperature sensor 4 can detect the temperature inside the chamber 1, thereby accurately measuring the ambient temperature at the mirror frame 100 to be tested. For example, the second temperature sensor 4 can be selected as a temperature sensor.

[0055] The steps for using this experimental apparatus are as follows:

[0056] First, assemble the test apparatus according to the drawings, place the test mirror frame 100 into the center of the observation window 11 inside the chamber 1, and close the chamber door 16;

[0057] Secondly, the inner diameter of the frame 100 under test at room temperature was measured using a 2.5D image measuring instrument and recorded as D1;

[0058] Then, the heating element 21 is heated until the temperature inside the chamber 1 reaches the set temperature and stabilizes for a certain period of time. The size of the frame 100 to be measured is then measured and recorded as D2.

[0059] Next, wait for the inner cavity of chamber 1 to cool down to room temperature, then measure the inner diameter of the frame 100 to be tested again and record it as D3;

[0060] Finally, D1, D2, and D3 were analyzed to evaluate the change in the inner diameter of the test frame 100 under high temperature conditions.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An experimental apparatus, characterized in that, include: The box (1) has transparent observation windows (11) on its opposite side walls. The test mirror frame (100) is placed in the inner cavity of the box (1) and is directly opposite to the observation windows (11). A heating component (2) is disposed in the inner cavity of the housing (1) and spaced apart from the test mirror frame (100). The heating component (2) can raise the temperature in the inner cavity of the housing (1). An image measuring instrument is set outside the housing (1) and directly opposite the observation window (11). The image measuring instrument is used to measure the inner diameter of the frame (100) to be measured inside the housing (1).

2. The experimental apparatus according to claim 1, characterized in that, The heating assembly (2) includes a heating element (21) and a heat dissipation fixture (22). The heating element (21) is disposed on the heat dissipation fixture (22), and the heat dissipation fixture (22) is installed on the inner wall of the housing (1).

3. The experimental apparatus according to claim 2, characterized in that, The heating component (2) further includes a first temperature detection element, which is installed on the heat dissipation fixture (22) and spaced apart from the heating component (21). The first temperature detection element is used to detect the temperature of the heat dissipation fixture (22).

4. The experimental apparatus according to claim 1, characterized in that, The test device also includes an air supply component (3), which is installed in the inner cavity of the box (1) and is spaced apart on the side of the heating component (2) away from the test mirror frame (100). The air supply component (3) can blow air onto the heating component (2).

5. The test apparatus according to claim 1, characterized in that, The box (1) is also provided with a heat insulation layer (12), which is attached to the inner wall of the box (1).

6. The experimental apparatus according to claim 1, characterized in that, The test device further includes a second temperature detection element (4), which is disposed inside the chamber (1) and located on the side of the test mirror frame (100) away from the heating component (2). The second temperature detection element (4) can detect the temperature inside the chamber (1).

7. The test apparatus according to any one of claims 1-6, characterized in that, The box (1) includes a top wall (13), a bottom wall (14) and a side wall (15). The top wall (13), the bottom wall (14) and the side wall (15) enclose and form the inner cavity of the box (1). Two observation windows (11) are respectively disposed on the top wall (13) and the bottom wall (14).

8. The test apparatus according to claim 7, characterized in that, The housing (1) also includes a door (16), and an opening is provided on the side wall (15). The test mirror frame (100) is inserted into or removed from the inner cavity of the housing (1) through the opening. The door (16) is rotatably connected to the side wall (15) to block the opening.

9. The test apparatus according to claim 8, characterized in that, A sealing element is provided on the periphery of the box door (16), and the sealing element is sandwiched between the box door (16) and the side wall (15).

10. The test apparatus according to claim 8, characterized in that, One end of the box door (16) is hinged to the side wall (15), and the other end of the box door (16) is connected to the side wall (15) through a locking member (18).

Images