The Large-Sized 3D Calibration Board With Light Source

The 3D calibration board with light source is a high-precision 3D calibration tool integrated with a dedicated illumination module. It is a high-precision calibration tool used in fields such as machine vision, photogrammetry, and 3D reconstruction. Its core function is to provide spatial depth information calibration for the visual system's stereo structure, thereby establishing an accurate 3D geometric model and achieving high-precision measurement and reconstruction. It is mainly used for system calibration and performance evaluation in fields such as machine vision, 3D scanning, and optical measurement. Based on traditional passive calibration boards, it adds an active light-emitting function to solve the problems of reflection and inaccurate feature point extraction under complex lighting conditions, providing a more stable, controllable, and suitable calibration condition for complex environments.
1. Core Features
(1) Built-in stable light source: Mostly using LED industrial light sources, they generate little heat and have a lifespan of up to 20,000 hours. They provide uniform diffuse lighting, avoid external strong light interference, and ensure clear recognition of calibration patterns;
(2) High uniformity of light source: active light emission and uniform illumination, with a light source uniformity of 95%;
Stereo structure design: It features three-dimensional spatial depth markers, providing Z-axis height information. Distinct from two-dimensional calibration plates, it enables full-space coordinate system calibration for binocular vision and structured light systems.
(3) Customizable parameters: high precision and repeatability, integrated design and portability, controllable performance parameters, customizable size and wavelength band, tailored for underwater use requirements.

2. Application Scenario: Primarily used in visual calibration and inspection scenarios where high requirements for illumination consistency, stability, and repeatability are essential, such as production line-level machine vision calibration, multi-camera/multi-view system calibration application scenarios, intelligent manufacturing and robotic vision, semiconductor/display and precision equipment calibration, etc.

Dongguan Dafan Optical Technology Co., Ltd.(DFOPTIX) was founded in 2018, its headquarters located in Dongguan City, Guangdong Province, China. DFOPIX is a system-level calibration solutions service provider with engineering culture as its cornerstone and technological innovation as its core.

Currently, DFOPTIX has nearly 150 employees, with R&D personnel consistently accounting for over 30% of the workforce each year — a professional team combining deep engineering expertise with sustained innovation capability. DFOPTIX has established an advanced R&D and manufacturing base spanning nearly 20,000 square meters, equipped with high-standard precision workshops such as class-100 lithography workshop and class-1000 vacuum lamination workshop, as well as various well-equipped professional laboratories. It has also introduced internationally advanced manufacturing and testing equipment, systematically establishing an industry-leading R&D and manufacturing system.

DFOPTIX specializes in the R&D and manufacturing of a full category of calibration products — including integrated light-source calibration targets and LiDAR calibration boards, while also providing customized calibration product services tailored to customers’ requirements. To date, our company's products and solutions have been widely deployed across sectors including medical, semiconductor, robotics, consumer electronics, intelligent vehicles, aerospace, 3D scanning, and industrial automation. DFOPTIX has served over 3,000 clients, including several Fortune 500 companies.