Posted to News on 2nd Jun 2011, 17:16
3-CCD colour cameras feature GigE Vision interface
Stemmer Imaging is introducing the JAI AT-140GE and AT-200GE 3-CCD cameras that bring the connectivity benefits of GigE Vision to 3-CCD technology. These new cameras feature a newly developed prism-block assembly to support the three CCDs, making the AT-140GE and AT-200GE cameras suitable for applications where colour is critical, including: print inspection, paint matching, medical diagnostics, flat panel quality verification, semiconductor production and food sorting. Indeed, the cameras are said to have the performance and features to support a wide variety of machine vision applications.
The new dichroic prism block splits the incoming light into three distinct colour channels for precise RGB values and is claimed to provide higher resolution and better light gathering ability than earlier three-CCD cameras. With precise sensor alignment (less than 1/4-pixel tolerance), this 3-CCD configuration offers better colour and spatial precision than single-CCD cameras using Bayer filters and interpolation algorithms that give uncertainty for both edge positions and colour values. The cameras also contain a sophisticated linear colour matrix circuit that enables accurate colour space calibration with monitors, printers, and other peripherals.
Stemmer Imaging reports that the AT-140GE offers 1.4 megapixel resolution (1392 x 1040) with 1/2inch CCDs, while the AT-200GE provides 2 megapixel resolution (1628 x 1236) based on three 1/1.8 inch CCDs. The new cameras operate at 20 frames per second (AT-140GE) and 15 frames per second (AT-200GE) at full resolution, with partial scan and binning modes available for even higher frame rates. A wide range of preset and programmable shutter and exposure modes are provided to support diverse application requirements. Exposure can be controlled individually for each colour channel to enable colour balancing without noisy gain adjustments.
A fully-compliant GigE Vision/GenICam interface enables users to choose between 8- or 10-bit output per channel and provides the ability to transmit images over distances of up to 100m using industry-standard Ethernet cables. Software support includes a GigE Vision software development kit and Control Tool package.
Follow the link for more information about the JAI AT-140GE and AT-200GE 3-CCD cameras, as well as other JAI cameras from Stemmer Imaging.
