A detailed introduction to the calibration board

introduce

The optical calibration board is a measurement aid for operating optical models of cameras and other optical equipment. This professional measuring tool usually consists of different types of stripes and dots to provide a reference standard during the measurement process of cameras or other optical devices. When measuring with an optical calibration board, it is usually necessary to correctly align the device with the optical calibration board before measuring, and adjust and calibrate it after the measurement is completed according to the accuracy of the camera or other optical equipment.

type

Depending on the application field and specific measurement purpose, optical calibration plates can be classified according to factors such as their initial composition material, fringe shape and density, and scale accuracy. For example, the following are some typical optical calibration plate types:

1. Gray scale calibration board

Grayscale calibration board is a type of optical calibration board, usually consisting of multiple grayscale levels. These plates are relatively standard and can be used to determine factors such as grayscale accuracy, contrast and white balance in images captured by the camera. They include many different grayscale values, and usually the grayscale change from white to black is linear.

2. Liquid crystal optical calibration board

Liquid crystal optical calibration board is usually a panel photoelectric device, which can be used to reference the contrast, brightness, resolution, color, etc., of cameras or other optical devices. Liquid crystal optical calibration plate is usually composed of multiple pixels, which has high display resolution and relatively high measurement accuracy in the measurement process.

3. Grid calibration board

The grid calibration board usually consists of many lines and stripes, which are usually transparent or opaque. Grid calibration boards are commonly used to measure the true age, distortion, or blurring of images from cameras or other optical devices. In addition, the calibration board can also be used to measure the pixel size and focal length of cameras or other optical devices.

4. Stripe calibration board

Fringe calibration board is an optical calibration board composed of regular stripes and lines, which is usually used in the calibration and adjustment of measuring equipment. They are used to detect distortion in the case of natural or manual inspection on optical devices, while also allowing the inspector to quickly identify pixels and focal points.

use

1. Image quality test

Image quality can be measured and evaluated using optical calibration board. With this calibration board, parameters such as resolution, contrast, orientation and gray level of the camera can be determined to improve the efficiency and accuracy of the camera.

2. Optical chemical analysis

Optical calibration plates are also widely used in chemical analysis. With the use of optical measurement equipment, the optical properties of each area can be determined by measuring the pattern of the calibration plate for more accurate data.

3. Prepare optical elements

Optical calibration plates can also be used to prepare various optical components and devices. They can be used to identify defects and biases in imaging systems and provide high-quality, high-precision image results.

Conclusion

Optical calibration board is an important component in the image measurement industry and optical inspection technology. This high-quality, high-precision measurement tool can be used to measure a wide range of optical components and devices and increase accuracy, effectiveness and productivity. Different types of optical calibration plates can be used in different application scenarios in order to quantitatively measure various quality parameters and characteristics, and jointly improve the accuracy, stability and reliability of measurements and equipment