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Application: High Speed Near Infrared (NIR) and Shortwave Infrared (SWIR) Imaging for High Speed Transient Events


Vehicle impact testing, ballistic motion analysis, and missile tracking are a few of the applications that require cameras capable of high frame rates and short exposure times. SUI (Sensors Unlimited, Inc.) produces a 640 x 512 pixel InGaAs camera capable of 109 full frames per second (fps) with frame rates over 15,220 fps depending on the selected pixel area. The camera's windowing capabilities enable the acquisition of user definable regions of interest for target tracking and ballistic analysis in the wavelength range of 0.9 to 1.7 um.

Short exposure times create a snapshot image of transient events allowing the user to examine a phenomenon in incremental steps of time. Water absorption bands in the SWIR make the InGaAs camera ideal for imaging and measuring a material's water content as it dries. The temperature uniformity of rapidly cooling glass materials in the manufacturing process can be monitored with InGaAs cameras, as well. The thermal response for materials over 100ºC plus the ability to see through glass makes the SUI InGaAs camera a superior detector over visible and thermal detectors.


High speed InGaAs cameras can detect fast events. This water drop is shown as it falls over the course of four intervals. The 640SDWH area camera can image over 100 frames per second at full size, ideal for tracking missiles, analyzing ballistics, and fast inspection lines. The camera can be set to short exposure times allosing for the user to examine the high speed event in increments.

A drop of water imaged with our SU640SDWH.


 

Nov. 1, 2005 Princeton, New Jersey - Sensors Unlimited joined Goodrich Corporation (NYSE: GR) and is now a member of their ISR Systems division. For more information, please visit www.isr.goodrich.com.

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