Perhaps the most common example of line scan imaging is the fax machine. Line scan imaging uses a single line of sensor pixels (effectively one-dimensional) to build up a two-dimensional image. The second dimension results from the motion of the object being imaged. Two-dimensional images are acquired line by line by successive single-line scans while the object moves (perpendicularly) past the line of pixels in the image sensor.
For a given field of view, one line scan camera typically provides more resolution than multiple area scan cameras, at a lower cost, without image smear or the redundant processing of frame overlaps.
Advantages Line scan image capture has many benefits, including:
The tradeoffs in line scan imaging usually relate to lighting and optics. Illumination must remain reasonably uniform over the entire field of view, although the in-camera flat-field correction available on almost all of our cameras can compensate for poor uniformity.
Integration times in line scan imaging are typically very short, so illumination intensity generally needs to be high--again, Teledyne DALSA's high sensitivity TDI line scan products, with 100x greater sensitivity than most comparable linescan, address this problem.
Optical demands center around the typically large image circle diameter required for linescan imagers because of their high resolution, and the minor aberrations inherent in spherical optics.
Linea line scan cameras offer innovative mono and color performance at attractive prices. Resolutions from 2k to 16k, line rates to 71 kHz. GigE, Camera Link, and CLHS interface options
Linea™2 series offers 5x bandwidth with 5GigE interface, powered by Teledyne quadlinear sensor for RGB+NIR multispectral imaging. Elevate your system's performance with dazzling speed and detection capability.
Compact and remarkably cost effective, Linea Lite makes line scan more accessible than ever. Designed with performance in mind. 2k resolution up to 50 kHz and 4k resolution up to 25 kHz
Leading edge multi-line CMOS technology delivers superb color plus near-infrared (NIR) fidelity for even the most demanding applications. 8k and 16k at 300 kHz, CLHS interface with fiber options
1024 pixel GigE SWIR line scan camera features a cutting-edge InGaAs sensor in a compact package for a wide variety of machine vision applications.
AxCIS™ is a fully integrated line scan imaging module which combines sensors, lenses, and lights all-in-one.
Industry leading speeds to meet future requirements of higher throughput in multi-spectral imaging applications.
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