GigE line scan cameras break line speed barriers
26 May 2015
GigE 2k and 4k models are the latest additions to the Teledyne DALSA range of Linea line scan cameras which are said to open up further applications to line scan imaging.
The TurboDrive technology allows both Linea GigE cameras to utilise the full speed of the CMOS sensor (up to 80 kHz line rate) with no loss of image quality. Other features such as burst mode, multiple ROIs, cycling mode and extended dynamic range imaging add exceptional process and image flexibility to the benefits of 100 m data transmission distances offered by the GigE Vision interface.
These new capabilities are highlighted on a video on the Stemmer Imaging web site.
The proprietary and patent-pending TurboDrive innovation overcomes the GigE bandwidth limitation by allowing line rates to be accelerated from the standard 52 kHz for the 2k version and 26 kHz for the 4k version to the full 80 kHz allowed by the sensor.
In addition, the burst mode maximises system data throughput, by capturing images in high-speed bursts faster than allowed by GigE and buffering them for transfer during idle times. Further data handling efficiencies are provided by the multiple regions of interest (ROI) capability. Only the important areas of the image need to be captured, allowing data transfer and processing load to be reduced, all of which not only helps boost performance but also reduces system cost.
Processing flexibility is offered by the cycling mode, which allows users to choose different settings for each line and cycle through up to five different user-controlled configurations which enables every line to be set for a different light source, lighting angle, exposure time, gain, and more, allowing more information to be obtained from a single pass with a single camera. In this way, Linea cameras can replace more expensive and multiple camera sets, or camera and frame grabber combinations, reducing overall system cost and complexity.
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