Design and development of a 512x512 infrared emitter array system
Date
2011
Authors
Journal Title
Journal ISSN
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Publisher
University of Delaware
Abstract
The detection of infrared (IR) light has a multitude of applications, ranging
from commercial to military. Arrays that are built to detect IR light can be very
difficult to accurately test and characterize without a frame of reference. A large
IR projection system can be used to provide the reference needed to accurately
calibrate an IR detector. As the size of the detection arrays grows, so to does the
requirement for IR projection arrays.
The following paper is a description of the work completed to create a full
system for driving, characterizing, and testing a 512x512 array of super-latticed
LEDs (SLEDS) at cryogenic temperatures. The main components of this system
include a driver integrated circuit, a custom cryogenic package, and various top level
components. In addition, future work for this generation and future generations of
the SLEDS project are discussed.
Preliminary results have shown that the driver integrated circuit is capable
of driving multiple loads with currents in excess of 20mA per pixel, at room temperature. The included monitoring capabilities will allow for more precise testing of
the system, and allow us to examine the functionality of individual pixels anywhere
on the array. That, plus the addition of the test pins, will give us unprecedented
test results of the driver functionality.