Texas Instruments DLP NIRscan EVM, Руководство пользователя

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What is in the DLP NIRscan EVM?
11 DLPU016C – April 2014 – Revised April 2019
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DLP NIRscan Evaluation Module Overview
CAUTION
Do not disassemble the optical engine. The optical engine contains lenses,
gratings, and detectors that have been calibrated at the factory. Loosening or
tightening screws and optical components may move pieces out of alignment
and cause decreased system performance. Removal of the cover may allow
dust intrusion, which can also decrease system performance.
Table 1-1 lists the specifications of the light engine.
Table 1-1. DLP NIRscan EVM Specifications
PARAMETER MIN TYP MAX UNIT
Supported wavelengths 1350 2450 nm
Spectrometer typical power 12 W
Tungsten lamp typical power 4 W
The optical engine includes the DLP4500NIR 0.45-inch DMD with 1039680 mirrors, arranged in 912
columns × 1140 rows with the diamond pixel array geometry and configuration shown in
Figure 1-3 and
Figure 1-4 . Due to the diamond pixel configuration, the array produces smooth diagonal lines, with jagged
vertical and horizontal lines, as shown in Figure 1-5 . Conceptually, the spectroscopy application running
on the DLP NIRscan GUI uses vertical columns to select wavelengths. These vertical lines are
programmable in width as selected in the DLP NIRscan GUI software. Wider columns tend to provide
more light to the detector, but less digital resolution. Narrow columns provide higher digital resolution, but
less light to the detector.
Figure 1-3. 0.45-Inch DMD Diamond Pixel Geometry Figure 1-4. 0.45-Inch DMD Diamond Pixel Array
Configuration