A field of view measurement calibration structure for eyewear and sports eyewear
By using a field-of-view measurement structure that combines a fisheye lens with a camera in goggles and sports glasses to achieve efficient and accurate field-of-view detection, the accuracy problem of traditional detection methods has been solved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANTOU RONGLIANG TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional methods for detecting the field of vision of goggles are limited by factors such as the shape, frame size, material and color of the goggles, making it difficult to accurately reflect the true field of vision of the human eye.
By combining a fisheye lens with low distortion or a wide-angle distortion-free lens with a camera, and simulating the human eye's field of vision through the principle of linear iso-angle, the field of vision detection is achieved by using the linear iso-angle principle of the camera, combined with a human head mold and mounting bracket.
It improves detection efficiency and accuracy, reduces ambient light interference, lowers detection costs, avoids errors caused by the human eye's self-adjustment, and is suitable for various types of glasses.
Smart Images
Figure CN224398951U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of eyeglass testing equipment technology, and in particular to a field of vision measurement and calibration structure for goggles and sports glasses. Background Technology
[0002] Eyeglasses and protective goggles not only provide various protective functions such as shading, impact protection, and splash protection, but also require a certain range of vision to be used in various protective application scenarios.
[0003] Traditional equipment uses laser light to illuminate the goggles worn by the head model for different samples. By adjusting the angle of the laser beam, the inspector judges whether the standard requirements are met by observing the laser mark on the goggles. Alternatively, sensors implanted inside the head model's eye receive laser energy to determine whether the goggles meet the field of vision requirements. However, both methods are limited by various factors such as the shape of the goggles themselves, frame size, frame material, lens color, and transmittance. Therefore, they do not accurately reflect the true visual field of the human eye.
[0004] Recognizing the shortcomings of the aforementioned conventional vision calibration structures, and upholding the spirit of research innovation and continuous improvement, the applicant, in conjunction with production practice and utilizing professional scientific methods, proposes a practical solution, and therefore submits this application. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a field of view measurement and calibration structure for goggles and sports glasses. This is achieved by implanting a fisheye lens with low distortion or a wide-angle, distortion-free field of view, similar to that of the human eye, into the eye area of a head model, and matching it with a camera of equivalent target size. Utilizing the principle of linear equal field of view in the camera—that is, the camera's field of view is proportional to its focal length—it simulates the human visual state, achieving the purpose of accurately testing the field of view.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a field of vision measurement and calibration structure for goggles and sports glasses, comprising: a human head mold, a camera, a goggle shield, a mounting bracket, and micrometer support rods. The human head mold is disposed on one side of the mounting bracket, and a camera is disposed inside the eye position of the human head mold. The goggle shield is disposed on the mounting bracket, and at least three micrometer support rods are disposed on the mounting bracket, with the three micrometer support rods supporting the front of the human head mold. The goggle shield is provided with a field of vision aperture, and the camera is electrically connected to a smart terminal.
[0007] Specifically, the micrometer support rods are positioned against the cheeks and forehead of the head mold on both sides to control the distance between the goggle shield and the head mold, ensuring that the same distance is maintained for each test.
[0008] Specifically, the mounting bracket has a square hole in the middle, and limit sliders are set above and below the edge of the square hole. A limit stop is set on the left or right side of the edge of the square hole, so that the goggle cover can be replaced as needed.
[0009] Specifically, the monocular field of view aperture is divided into an outer edge and an inner edge on the left and right sides. The outer edge has a horizontal angle of 60 degrees with the camera, and the inner edge has a horizontal angle of 30 degrees with the camera.
[0010] Preferably, the monocular field of view aperture is divided into an upper edge and a lower edge on both sides, with the upper edge forming a vertical angle of 30 degrees with the camera and the lower edge forming a vertical angle of 30 degrees with the camera.
[0011] Preferably, the monocular field of view aperture is divided into an upper edge and a lower edge on both sides. The upper edge forms a 45-degree angle with the vertical direction of the camera, and the lower edge forms a 45-degree angle with the vertical direction of the camera.
[0012] The angle between the two sides is 45 degrees.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: a mounting bracket is set in front of the head mold, and the field of view distance of the camera is adjusted by the goggle on the mounting bracket. By converting the field of view angle and stitching the images of both eyes, an equivalent human eye field of view is achieved; the field of view range of the goggles worn on the head mold is intuitively simulated, which improves the detection efficiency and ensures the accuracy of the detection. It also eliminates the need for traditional angle adjustment and various electronic and mechanical structures, and can make real-time judgments on whether the field of view meets the standard requirements. Attached Figure Description
[0014] Figure 1 This is a perspective view of the present utility model;
[0015] Figure 2 This is a diagram showing the head of this utility model in use;
[0016] Figure 3 This is a three-dimensional rear view of the present invention;
[0017] Figure 4 This is a head model drawing of this utility model.
[0018] In the diagram: 1. Head mold; 2. Camera; 3. Eye protection plate; 4. Mounting bracket; 5. Micrometer support rod; 6. Field of view hole; 7. Square hole; 8. Limiting slider; 9. Limiting stop. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Reference Figure 1-4 A field of view measurement and calibration structure for goggles and sports glasses includes: a human head mold, a camera, a goggle shield, a mounting bracket, and micrometer support rods. The human head mold is mounted on one side of the mounting bracket, and the camera is installed inside the eye position of the human head mold. The goggle shield is mounted on the mounting bracket, and at least three micrometer support rods are mounted on the mounting bracket, with the three micrometer support rods supporting the front of the human head mold. The goggle shield has field of view apertures. The camera is electrically connected to a smart terminal, and the smart terminal is electrically connected to a high-resolution LCD display. The high-resolution LCD display is located directly in front of the human head mold, and all the scales on the high-resolution LCD display are converted to corresponding field of view angles, thereby achieving the detection effect.
[0021] In the above solution, the micrometer support rods are respectively positioned on the cheeks and forehead of the head mold, using three fulcrums for precise positioning and maintaining a suitable distance between the head molds. The mounting bracket has a square hole in the middle, with limiting sliders located above and below the edge of the square hole, and a limiting stop on the left or right side of the edge of the square hole. The goggle shield is designed with corresponding field of vision and openings according to different head mold sizes. It can be replaced according to different types and sizes of head molds. The goggle shield is slidably inserted into the slide rails of the upper and lower limiting sliders, and then the limiting stop is used to hold the goggle shield in place for designed position limitation.
[0022] In the above solution, the left and right sides of the monocular field of view aperture are divided into outer edges and inner edges. The horizontal angle between the outer edge and the camera is 60 degrees, and the horizontal angle between the inner edge and the camera is 30 degrees. This angle conforms to the field of view of the human eye. Moreover, different shapes and sizes of human head molds can be replaced as needed. The dimensions of the human head molds, such as the distance between the eyes, are also different, so they can be used for more styles of glasses.
[0023] Example 1
[0024] The monocular field of view aperture is divided into upper and lower edges and inner and outer edges. The angle between the upper and lower edges and the camera's vertical direction is 30 degrees, and the angle between the inner and outer edges and the camera's vertical direction is also 30 degrees. It is suitable for sports glasses and safety glasses with general requirements.
[0025] Example 2
[0026] The monocular field of view aperture is divided into upper and lower edges and inner and outer edges. The upper and lower edges form a 45-degree angle with the vertical direction of the camera, and the inner and outer edges also form a 45-degree angle with the vertical direction of the camera. It is suitable for sports glasses and safety glasses that manufacturers claim to meet higher requirements.
[0027] Example 3
[0028] The monocular field of view aperture is divided into upper and lower edges and inner and outer edges. The vertical angle between the upper and lower edges and the camera is 30 degrees, the vertical angle between the inner edge and the camera is 30 degrees, and the vertical angle between the outer edge and the camera is 60 degrees. It is suitable for various types of goggles used for driving.
[0029] When testing is required, a suitable head mold can be selected, and the sports glasses and goggles to be tested can be placed on the head mold. Then, the camera inside the head mold is activated by the smart terminal. The camera will capture the image in front of it and transmit it to the high-resolution LCD display of the smart terminal. The testing personnel can observe various data through the high-resolution LCD display, such as the field of vision of the glasses and the color of the lenses, which makes it convenient for the testing personnel to test the sample glasses.
[0030] It can greatly improve the accuracy and speed of testing, while saving the space required for equipment use to the greatest extent, reducing the testing cost burden on manufacturers, and making the optical performance testing of necessary lenses more widespread.
[0031] The system drives a high-resolution LCD display to correspond to the target and accurately calculates the distance to the virtual target and the corresponding viewing angle. This allows multiple standards to share a single measurement platform, significantly reducing the equipment's operating space and minimizing ambient light interference. By keeping the sample in the same position for simultaneous testing with different standards, errors caused by sample movement are avoided, and the efficiency of mass sample testing is greatly improved. Operators view images captured by the camera on a monitor, facilitating testing and avoiding measurement errors caused by human eye adjustment.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A field of view measurement and calibration structure for goggles and sports glasses, comprising: The invention comprises a human head mold, a camera, a protective goggle, a mounting bracket, and micrometer support rods, characterized in that: the human head mold is set on one side of the mounting bracket, a camera is installed inside the eye position of the human head mold, a protective goggle is installed on the mounting bracket, at least three micrometer support rods are installed on the mounting bracket, the three micrometer support rods support the front of the human head mold, the protective goggle is provided with a field of view opening, and the camera is electrically connected to a smart terminal.
2. The field of view measurement and calibration structure for goggles and sports glasses according to claim 1, characterized in that: The micrometer support rods are respectively positioned to support the cheeks and forehead of the human head mold.
3. The field of view measurement and calibration structure for goggles and sports glasses according to claim 1, characterized in that: The mounting bracket has a square hole in the middle, and limit sliders are provided above and below the edge of the square hole. A limit stop is provided on the left or right side of the edge of the square hole.
4. The field of view measurement and calibration structure for goggles and sports glasses according to claim 3, characterized in that: The field of view aperture is divided into an outer edge and an inner edge on the left and right sides. The outer edge has a horizontal angle of 60 degrees with the camera, and the inner edge has a horizontal angle of 30 degrees with the camera.
5. The field of view measurement and calibration structure for goggles and sports glasses according to claim 4, characterized in that: The field of view is divided into an upper edge and a lower edge on both sides. The angle between the upper edge and the camera is 30 degrees, and the angle between the lower edge and the camera is 30 degrees.
6. The field of view measurement and calibration structure for goggles and sports glasses according to claim 4, characterized in that: The field of view is divided into an upper edge and a lower edge on both sides. The angle between the upper edge and the camera is 45 degrees, and the angle between the lower edge and the camera is 45 degrees.