SWIR Cameras

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Xenics is introducing short-wavelength infrared (SWIR) cameras for the medical, scientific and industrial markets. A new detector, the XFPA-1.7-640-LN2, is geared to low-signal-level measurements in semiconductor inspection and fault localization. Bobcat-320-Gated, a new camera for scientific R&D applications, delivers integration times of 80 ns. The Lynx high-speed SWIR line-scan series offers resolution of up to 1 × 2048 for nonintrusive medical imaging and general SWIR applications, and the Gobi-640-GigE addresses the long-wavelength infrared thermal imaging segment.

XFPA-1.7-640-LN2 SWIR detector

The Lynx-1.7-2048 offers low noise at a line rate of 10 kHz; Lynx-1.7-1024 and Lynx-1.7-512 offer up to 40-kHz line rates, enabling capture of fast-moving samples. Lynx is equipped with a small sensor with a pixel pitch of 12.5 μm to support inspection tasks that demand high accuracy in the SWIR range. The light source radiates at a wavelength of 1.3 μm, increasing the penetration depth in human tissue. The cameras are compatible with the C-mount standard.

The Gobi-640-GigE addresses high-sensitivity medical imaging in a small form factor with 640 × 480 pixels. It has a GigE interface, onboard image processing and Power over Ethernet, and is suitable for life tissue imaging and breast cancer examination.

The XFPA-1.7-640-LN2 is a high-resolution liquid-nitrogen (LN2)-cooled SWIR detector developed for R&D spectroscopy and photon emission in the semiconductor failure analysis industry, for high-resolution spectroscopy and low-light-level SWIR and visible/near-infrared imaging.

Bobcat-320-Gated SWIR camera

Based on source-follower detector readout technology, the detector offers high sensitivity at 640 × 512-pixel resolution, with a pixel pitch of 20 μm and long integration times. LN2 cooling at 77 K allows for noise of <20 e and dark current of <5 eper second per pixel. Easy focusing on the microscope stage is supported by the increased frame rate in windowing mode.

The Bobcat-320-Gated is an SWIR camera operating in the 0.85- to 1.6-μm spectral band and providing integration times down to 80 ns. It uses a sensitive uncooled InGaAs detector with a 20-μm pixel pitch. The compact camera includes real-time onboard image processing and image correction, and features programmable trigger-out delay between the internally generated trigger-out pulse and the start of integration. It is configurable from 80 ns up to 2 ms in steps of 80 ns, and it operates at a frame rate tunable around 28 fps. It is suited for inspection of hot and fast-moving objects or for measurement systems requiring synchronization of the camera with a pulsed laser.

Published: January 2012
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