© Bueno Systems, Inc. • TSL1401-DB (2009.10.01)
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Introduction
What the Module Sees
The TSL1401R chip is a linear array (linescan) sensor. It consists of a single row of 128 photodetectors.
The TSL1401-DB includes a lens to form images on the sensor array. What results is somewhat like
peering through the narrow crack of a partially opened door to see a thin slice of what lies behind it. The
illustration below helps to explain the concept:
TOP VIEW
F
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P
ix
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L
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P
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The output from each observed pixel is an analog voltage proportional to light intensity. The analog
intensity curve corresponding to the image above would look something like this:
