Angle-adjustable optical window sheet transmittance testing device

Abstract

The invention belongs to the field of optical testing equipment, and relates to an angle-adjustable optical window sheet transmittance testing device which comprises a base and a diaphragm installed on the base and further comprises a rotary fixing plate, an angle rotating mechanism and an optical window sheet fixing frame. The fixed end of the angle rotating mechanism is installed on the rotating fixing plate, the optical window piece fixing frame is connected with the rotating end of the angle rotating mechanism, the optical window piece fixing frame can rotate in the direction parallel to a light source, and the optical window piece fixing frame is used for installing an optical window piece. And the middle area is hollowed out, so that a light source can pass through conveniently, and the transmittance of the optical window at different angles can be tested through the rotation of the optical window fixing frame. According to the invention, the efficiency and the flexibility of testing the transmittance of the optical window sheet are obviously improved, the testing cost is reduced, and the testing practicability is enhanced.

Description

Technical Field

[0001] The invention belongs to the field of optical testing equipment and relates to an optical window transmittance testing device with adjustable angle. Background Art

[0002] The optical window transmittance test device is a device used to measure the light transmittance of optical windows (such as glass, film, etc.). This test device is widely used in the fields of optical material research and development, quality control, etc. The optical window transmittance test device is mainly based on the principle of light transmission. When light passes through a substance, absorption, reflection, and transmission will occur. The device calculates the transmittance of the substance by measuring the ratio of the intensity of the transmitted light to the intensity of the incident light. The conventional optical window transmittance test device has a fixed angle (generally 90° vertical incidence), and the test angle is not adjustable. The device is installed in the optical path corresponding to the spectrophotometer used for transmittance testing. There are square or circular optical light holes on the test device to allow the light source to pass through the optical window.

[0003] like Figure 1 As shown, when a conventional optical window transmittance test device performs a transmittance test, first open the test hatch cover of the spectrophotometer, install the test device in the spectrophotometer, illuminate to adjust and calibrate the optical path to ensure that the light from the light source can effectively pass through the optical light hole of the test device, then place the optical window to be tested vertically on the test surface of the test device, fix the optical window with a spring clip, close the test hatch cover, and illuminate to perform a transmittance test.

[0004] Due to the structural limitations of conventional optical window transmittance testing devices, conventional optical window transmittance testing devices can only achieve transmittance testing at a fixed incident angle of 90 degrees. If the transmittance of the same optical window needs to be tested at other angles, a dedicated fixed-angle test fixture must be redesigned. If there are many angles to be tested, there are also many types of fixtures, and the fixtures must be replaced frequently, making fixture management cumbersome. Summary of the invention

[0005] In view of this, an object of the present invention is to provide an optical window transmittance testing device with adjustable angle to solve the problems raised in the background technology.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An angle-adjustable optical window transmittance testing device comprises a base and an aperture mounted on the base, and also comprises a rotating fixed plate, an angle rotating mechanism and an optical window fixing frame, wherein the rotating fixed plate is fixedly mounted on the base, the fixed end of the angle rotating mechanism is mounted on the rotating fixed plate, the optical window fixing frame is connected to the rotating end of the angle rotating mechanism and enables the optical window fixing frame to rotate parallel to the direction of a light source, the optical window fixing frame is used to install an optical window, and the middle area is hollowed out to facilitate the passage of the light source, so that the transmittance of the optical window at different angles can be tested by rotating the optical window fixing frame.

[0008] Furthermore, a U-shaped notch connected to the middle hollow area is provided at the lower end of the optical window fixing frame, so that the operator can hold the optical window through the U-shaped notch.

[0009] Furthermore, a diagonally arranged L-shaped stopper is provided on one side of the optical window holder for mounting the optical window, and the L-shaped stopper is rotatably arranged on the optical window holder so that the optical window can be mounted by rotating the L-shaped stopper to press on the optical window.

[0010] Furthermore, an X-axis moving platform is provided on the base, and the diaphragm is mounted on the base via the X-axis moving platform so that the diaphragm can be horizontally displaced parallel to the light source.

[0011] Furthermore, a spectrophotometer docking port for mounting and docking with a spectrophotometer is also provided at the bottom of the base.

[0012] Furthermore, a graduated disk for indicating the angle of the optical window is also provided on the angle rotation mechanism.

[0013] Furthermore, the angle rotation mechanism is also provided with a locking rod for locking the rotation and an angle rotation rod for adjusting the rotation angle.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides an angle-adjustable optical window transmittance test device, which significantly improves test efficiency and flexibility, reduces test costs, and enhances test practicability. Through the innovatively designed angle rotation mechanism and optical window fixture, the transmittance test of the optical window at any angle of 0° to 90° can be achieved on the same platform. This breakthrough solves the problem that traditional test devices can only perform fixed-angle tests and need to frequently change devices to test different angles. It greatly improves test efficiency, reduces the number of test devices and fixture processing costs, and simplifies test processes and management.

[0016] Secondly, the test device cleverly combines the spectrophotometer installation interface, optical path alignment, extinction treatment and angle rotation mechanism, and accurately considers the mutual influence of each component through three-dimensional modeling, thereby improving the design accuracy. The design of the optical window holder is not only convenient for installing and removing the optical window, but also makes the operation more convenient through the design of the U-shaped notch and L-shaped block, avoiding scratches that may be caused by the use of tools and protecting the key areas of the optical window. In addition, the introduction of the X-axis moving platform enables the test device to adapt to optical windows of different sizes, further expanding its application range.

[0017] The practicality of the present invention is reflected in its wide applicability. Whether it is a round, square or special-shaped optical window, continuous testing of multi-angle transmittance can be achieved by simply replacing the optical window holder of the corresponding shape. This feature makes the present invention have broad application prospects in the fields of production, research and development, and quality control of optical windows. At the same time, the dividing plate design on the angle rotation mechanism makes the angle adjustment more precise and the test results more reliable. In summary, the present invention not only improves the test efficiency and reduces the test cost, but also brings significant progress to the field of optical window transmittance testing through its innovation and practicality.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 It is a schematic diagram of the structure of a conventional optical window transmittance testing device;

[0021] Figure 2 This is a test flow chart of a conventional optical window transmittance test device;

[0022] Figure 3 It is a structural schematic diagram of an angle-adjustable optical window transmittance testing device in an embodiment;

[0023] Figure 4 for Figure 3 Right view of;

[0024] Figure 5 for Figure 3 Left view of

[0025] Figure 6 for Figure 3 A top view of

[0026] Figure 7 for Figure 3 Bottom view of

[0027] Figure 8 It is a flow chart of the use of an angle-adjustable optical window transmittance testing device in the embodiment;

[0028] Fig. 9 Schematic diagram of square and curved optical windows.

[0029] Figure numerals: base 1, X-axis moving platform 2, aperture 3, optical light hole 31, rotating fixed plate 4, angle rotation mechanism 5, dividing plate 51, optical window fixing frame 6, L-shaped block 7, optical window 8, U-shaped notch 9, locking rod 10, angle rotation rod 11, spectrophotometer docking port 12, spring clip 13. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and the features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1-2 , which is a conventional optical window transmittance testing device, comprises a base 1, an aperture 3 and a spring clip 13 mounted on the base 1, wherein the spring clip 13 clamps the optical window 8 between the spring clip 13 and the aperture 3 at an angle parallel to the aperture 3 (i.e., an angle perpendicular to the base), and the aperture 3 has an optical light hole 31;

[0034] In the existing optical window transmittance test process, the test method is to place the optical window 8 on a conventional optical window transmittance test device at a fixed angle, and then illuminate it for transmittance test; however, this test method can only perform transmittance test at a certain fixed angle. If other angles need to be tested, the entire test device must be dismantled and replaced, and a test device of the corresponding angle must be installed, and then the optical window must be placed for measurement. The measurement efficiency is low, the number of test devices is large, the corresponding fixture processing cost is high, and the test device management is cumbersome.

[0035] Example 1

[0036] See also Figure 3 to Figure 8 The present embodiment provides an angle-adjustable optical window transmittance testing device, comprising a base 1, an aperture 3 mounted on the base 1, a rotating fixed plate 4, an angle rotating mechanism 5 and an optical window fixing frame 6, wherein the rotating fixed plate 4 is fixedly mounted on the base 1, the fixed end of the angle rotating mechanism 5 is mounted on the rotating fixed plate 4, the optical window fixing frame 6 is connected to the rotating end of the angle rotating mechanism 5, so that the optical window fixing frame 6 can rotate parallel to the direction of the light source, and the optical window fixing frame 6 is used to install an optical window 8, so that the present testing device can perform transmittance tests on the optical window 8 at different angles.

[0037] This embodiment adopts Creo design, and through the spectrophotometer mounting interface, optical path alignment, extinction treatment, and the angle rotation of the optical window holder 6, and through three-dimensional modeling, the mutual influence of the spectrophotometer optical path, mounting interface, optical window fixation, angle rotation mechanism and platform moving structure is more accurately considered, and the design accuracy is improved, so that a multi-angle adjustable optical window transmittance test device is designed on the same platform. It has been verified that this technical solution can realize the transmittance test at any angle of 0° to 90°.

[0038] Specifically, the optical window holder 6 has a through hole (ie, the middle area is hollowed out) that matches the size of the optical window 8 , so that the light irradiated to the optical window 8 can pass through the optical window holder 6 .

[0039] Furthermore, a U-shaped notch 9 communicating with the through hole is provided on the optical window fixing frame 6 , so that an operator can hold the optical window 8 through the U-shaped notch 9 .

[0040] Furthermore, a diagonally arranged L-shaped stopper 7 is provided on one side of the optical window holder 6 for mounting the optical window 8, and the L-shaped stopper 7 is rotatably arranged on the optical window holder 6, so that the optical window 8 can be disassembled by rotating the L-shaped stopper 7 to determine whether it is pressed on the optical window 8.

[0041] Furthermore, an X-axis moving platform 2 is provided on the base 1, and the diaphragm 3 is installed on the base 1 through the X-axis moving platform 2, so that the diaphragm 3 can be horizontally displaced parallel to the light source; when the size of the optical window to be tested is large, it is convenient to move the diaphragm 3 to adapt to the rotation test of the large-sized optical window to avoid motion interference.

[0042] Specifically, the bottom of the base 1 is also provided with a spectrophotometer docking port 12 for mounting and docking with the spectrophotometer, and the whole is made of blackened aluminum alloy; the X-axis moving platform 2 is used to drive the aperture 3 to move along the X-axis (parallel to the horizontal direction of the light source); the material of the aperture 3 is blackened aluminum alloy, and an optical light hole 31 is provided on it for adjusting the light beam of the light source; the rotating fixing plate 4 is connected to the base 1 and plays the role of fixing the angle rotating mechanism 5, and the material is blackened aluminum alloy; the material of the angle rotating mechanism 5 is aluminum alloy The optical window fixing frame 6 is rotatably mounted on it, and the angle rotation rod 11 installed on the rotating end can be turned to drive the optical window fixing frame 6 and the optical window to rotate the angle; the material of the optical window fixing frame 6 is blackened aluminum alloy, and is used to place the optical window 8; the material of the L-shaped stopper 7 is black plastic, and after the optical window 8 is installed on the optical window fixing frame 6, the L-shaped stopper 7 can be rotated to press the optical window 8; the locking rod 10 is used to lock the angle rotation mechanism 5 after the angle adjustment of the optical window fixing frame 6 is completed, so as to keep it fixed.

[0043] Furthermore, the size of the spectrophotometer docking port 12 at the bottom of the base 1 is designed to be 0.10 mm larger than the corresponding alignment pin in the spectrophotometer, which facilitates the installation and positioning of the base and complies with the design rules and requirements of the installation structure.

[0044] Furthermore, the angle rotation mechanism 5 is also provided with a graduated plate 51 for indicating the angle of the optical window 8. The angle rotation mechanism 5 can adopt a common rotation mechanism on the market, for example, it can be set as an outer cylinder with a fixed end connected to the rotating fixed plate 4, an inner cylinder with a rotating end connected to the outer cylinder, the angle rotation rod 11 is a lever fixed to the inner cylinder, the locking rod 10 is a plug rod connected to the outer cylinder in a radially sliding manner, and a plurality of locking holes arranged along the circumferential direction are provided on the inner cylinder. After the angle adjustment of the optical window fixing frame 6 is completed, the plug rod is inserted into the corresponding locking hole to complete the locking of the angle rotation mechanism 5.

[0045] In this embodiment, the technical solution for testing the transmittance at angles of 90°, 70°, 45°, 30°, etc. using an optical window of φ62mm×3mm is as follows:

[0046] 1) First, install the assembled angle-adjustable optical window transmittance test device into the spectrophotometer, put a φ62 mm circular optical window into the optical window holder 6, rotate the two L-shaped blocks 7 to fix the optical window to the optical window holder 6, turn the angle rotation rod 11 of the angle rotation mechanism 5 to rotate it to the position where the dividing plate 51 is 90°, and then lock the angle rotation mechanism 5 by the locking rod 10.

[0047] 2) Secondly, open the optical path of the spectrophotometer and confirm that the light source can pass through aperture 3, close the hatch cover, and then perform the transmittance test of the required wavelength band (e.g. 900nm to 1600nm);

[0048] 3) After the 90° test is completed, if you need to test the transmittance at angles of 70°, 45°, 30°, etc., you need to open the hatch, rotate the angle rotation mechanism to the docking angle, close the hatch, and then you can perform the transmittance test of the required band;

[0049] 4) A U-shaped notch 9 is designed below the optical window holder 6. When the next optical window needs to be replaced for testing, the edge of the optical window can be held when taking and placing the window, which not only facilitates the quick placement of the optical window, but also effectively avoids scratching the key area of ​​the optical window with tools such as tweezers;

[0050] like Fig. 9 As shown, in another embodiment, the technical solution can be extended to the transmittance test of all circular windows, and can also be expanded to the test of square windows or special-shaped (such as arc-shaped) windows, only by replacing the shape of the optical window fixing frame.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An angle-adjustable optical window transmittance test device, comprising a base and an aperture mounted on the base, characterized in that: It also includes a rotating fixed plate, an angle rotating mechanism and an optical window fixing frame, wherein the rotating fixed plate is fixedly mounted on the base, the fixed end of the angle rotating mechanism is mounted on the rotating fixed plate, the optical window fixing frame is connected to the rotating end of the angle rotating mechanism, and enables the optical window fixing frame to rotate parallel to the direction of the light source, the optical window fixing frame is used to install the optical window, and the middle area is hollowed out to facilitate the passage of the light source, so that the transmittance of the optical window at different angles can be tested by rotating the optical window fixing frame.

2. The angle-adjustable optical window transmittance testing device according to claim 1, characterized in that: A U-shaped notch connected to the middle hollow area is provided at the lower end of the optical window fixing frame, so that the operator can hold the optical window through the U-shaped notch.

3. The angle-adjustable optical window transmittance testing device according to claim 1, characterized in that: A diagonally arranged L-shaped stopper is provided on one side of the optical window holder for mounting the optical window. The L-shaped stopper is rotatably arranged on the optical window holder so that the optical window can be mounted by rotating the L-shaped stopper to press on the optical window.

4. The angle-adjustable optical window transmittance testing device according to claim 1, characterized in that: An X-axis moving platform is also provided on the base, and the diaphragm is mounted on the base via the X-axis moving platform so that the diaphragm can be horizontally displaced parallel to the light source.

5. The angle-adjustable optical window transmittance testing device according to claim 1, characterized in that: The bottom of the base is also provided with a spectrophotometer docking port for mounting and docking with the spectrophotometer.

6. The angle-adjustable optical window transmittance testing device according to claim 1, characterized in that: The angle rotation mechanism is also provided with a dividing plate for indicating the angle of the optical window.

7. The angle-adjustable optical window transmittance testing device according to claim 6, characterized in that: The angle rotation mechanism is also provided with a locking rod for locking the rotation and an angle rotation rod for adjusting the rotation angle.

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