Concentric Square Test Targets

Concentric Square calibration targets

The concentric square camera distortion calibration targets are for calibration of measurement software for image processing,with 1mm to 50mm Squares pattern to accommodate different fields of view.

Our distortion calibration targets is high precision calibration targets mainly for industrial cameras and computer vision application，the concentric targets are square pattern on Dimensionally Stable Substrates (Float Glass/White Ivory Soda Lime Glass),Optimized for calibration of Imaging Systems，The squares vary in dimensions to accommodate different fields of view(FOV).We can meet the various high precision accurancy requirements.
We are specialized at custom concentric square calibration targets,and they are totally compatible with edmund resolution target.

1,Concentric square calibration targets specifications:
A：Concentric Square Targets on Float Glass

B: Concentric Square Target On White Ivory Soda Lime Glass

Refer below item “7” information for more custom Concentric square calibration targets.
Please choose the grid size and spacing that suits your application best.

C: Concentric Square Target on Opaque Ceramic

2,Products pictures

3,Calibration Targets Category

A: Category According to the Materials

Visions Plus main products are calibration plate with ceramic and glass substrate materials. The calibration plate made of optical glass has stable chemical properties and high accuracy! This material is free of impurities and bubbles. It is the best material for high-precision calibration plate! The calibration plate of ceramic substrate has the characteristics of small thermal expansion coefficient, high hardness, good wear resistance, low thermal conductivity, good acid and alkaline resistance, and no reflection. Its good surface diffuse reflection treatment,this can solves the problem of reflection of glass calibration plate,especially under the condition of front light source in the application process. Customers can choose calibration plates of different materials according to their own needs. We have hundreds of standards and thousands of customized products to choose from, so as to realize one-scenter purchasing of calibration plates.

B: Category According to the Charts and Applications

C：Category According to the Illumination Environment

If you use front ,reflective , natural illumination, like ring lighting,bar lighting,coaxial lighting,natural lighting,etc. We suggest you to select the Opaque Substrate to avoice reflection,such as Ceramic: Matte Ceramic which is non reflective, Glossy Ceramic which is reflective, White PE on Glass : perfectly replace matte ceramics 

Paper: Museum Grade100% cotton fiber, acid-free, lignin-free 

If you use back illumination like area lighting,collimated lighting,etc. these illuminations are on the opposite side of the object without reflection,we suggest you to select Transparent Substrate,such as

Glass: Soda Lime Glass (Float Glass) Usual(You can customize a matching backlight illumination.)

Quartz Glass (Fused Silica)Better Performance(You can customize a matching backlight illumination.)

Film: It can be sticked on glass without any trace.

White Film: Translucent Clour Ink

D: Category According to the Accuracy and Manufacturing Process

The accuracy of the calibration plate is mainly determined by the manufacture processing technology, mainly including the following three types:

●Laser lithography process (accuracy within 1~3um): imported processing equipment such as high-precision lithography machine and optical coating machine. Commonly used processing materials include glass and ceramic. The production pattern can reach 1m, and the commonly used (glass) processing size is generally about 500mm:

●Screen printing process (precision 1-30um): high precision screen printing machine, precision screen plate and other processing equipment. The commonly used processing materials include glass, ceramic, metal plate and composite plate. The production range can reach 2m, and the commonly used processing range is 300-1000mm

●Laser drawing (accuracy 20-50um): laser marking machine processing equipment, commonly used processing materials include aluminum alloy plate, and the range is generally within 400mm

4,Calibration Targets Applications

Calibration target is a special high-precision measurement and calibration tool developed for machine vision, industrial cameras,computer vision,robot arms,automated driving vehicles,Face recognition system, image measurement, photogrammetry, three-dimensional reconstruction, three-dimensional scanners, automation equipment, AOI/SMT machine, image measuring instrument, Metrology Institute, University, semiconductor industry, research institute and machine vision integrator, to determine the conversion relationship between physical dimensions and pixels, to correct lens distortion; And to determine the relationship between the three-dimensional geometric position of a point of the object and its corresponding point in the image, it is necessary to establish the geometric model of camera imaging. The geometric model of the camera can be obtained by taking the array plate with fixed spacing pattern and calculating the calibration algorithm, so as to obtain high-precision measurement and reconstruction results. The flat plate with fixed spacing pattern array is the calibration plate. We mainly provide high-precision calibration targets.

5,Why our Calibration targets is compatible
A: Camera calibration is a necessary process to accurately measure the target object. The distortion degree of each lens is different. The distortion of this lens can be corrected by camera calibration. After camera calibration, the coordinates of the metric unit of the target object in the world coordinate system can be obtained. Camera calibration is actually the process of determining the internal and external parameters of the camera.

B. The positioning accuracy is up to 0.001mm;

C: It is compatible with the Halcon and activevision tools machine vision SDK of German mvtech company. Surrounded by a border and an oblique angle, 7x7 dot matrix.

6,Our Advantages：
The company is in the field of industrial automation and provides comprehensive services to the rapidly developing precision research and precision equipment manufacturing industry.

The core business provides various materials and high-precision calibration targets. The image system used for calibration is necessary for high-precision positioning, measuring and detecting image system.

Materials can be provided: optical glass, quartz glass, ceramic, alumina metal, carbon fiber, film, film lamination, photo paper, etc;

Customization, technology and service: micron vision has customized thousands of calibration boards for customers, and also provided technical solutions for the application of calibration boards.

Customization is very important to micron vision. We can quickly understand the needs of customers' application environment, and quickly provide solutions and deliver products.

We are happy to communicate with customers, and our goal is to improve the value of customer projects,and we have our advantages:

1: Quick customization calibration targets

2: High accuracy calibration targets

3: Nice Price advantage

4: Order in small quantities

5: Experienced service

6: Free service before and after-sales

7,How to customize a calibration target
We offer camera calibration solution for your according to your testing requirements,please contact us for free drawings:

8,About the package and shipment：