Line Scan Camera Provides Highly Accurate 2D Color and 3D Inspection of Cell Phone Glass Surfaces
The manufacture of glass displays for mobile devices requires a high level of precision and speed. Common surface defects in screen glass, such as scratches, chips and embedded foreign objects, should be identified and removed during manufacturing to ensure high-quality production at scale. While such inspections are sometimes still performed manually, doing things this way is both time-consuming and costly. Autonomous optical systems minimize human input and maximizes effectiveness and are typically integrated into manufacturing lines for real-time, non-contact inspection.
The Chromasens 3DPIXA compact 30µm 3D stereo line scan camera is highly suitable for surface glass inspection with its ability to simultaneously acquire both 2D color images and 3D point clouds of the glass surface.
Equipped with a Tri-linear CCD Sensor (RGB) and factory-calibrated lens, the 3DPIXA compact 30µm provides optical resolution accuracy of 30 µm/pixel over a wide field of view of 105mm (4.13 inches). Its Camera Link interface combined with line scan imaging technology results in a line frequency rate of 21.2 kHz, allowing it to inspect glass on continuously moving production lines at speeds up to 630mm per second without motion blur. Advanced optics, sensors, and algorithms applied to calculate subtle variations in depth will detect 3D defects on glass surfaces at height resolutions as fine as 10µm.
Sophisticated illumination techniques, such as Chromasens Corona II Dark Field LED lighting, overcome glare and enhance the visibility of glass surface flaws. Chromasens line scan illumination systems focus LEDs with elliptical reflectors instead of lenses, resulting in no color aberration, higher efficiency, and higher power at longer working distances.
The 3DPIXA compact 30µm camera comes with the Chromasens 3D-API for software integration, and supports libraries from HALCOM, MIL, LabVIEW and Coake.
For more information: www.chromasens.de
