DLP NIRscan Nano Evaluation Module Violation Dismantling

As engineers and developers, our job is to find the best way to combine all the components together. Regardless of whether it is a skyscraper or an integrated circuit, the internal engineering structure is one of the keys to decide whether it can work well. But then again, who has never dreamed of being a "destructive king" and has taken things apart to find out? Most of our initial engineering-related memories came from childhood when we made things look complicated - even expensive - and smashed down.

That being the case, we're going to take a look at the internals of the DLP NIRscan Nano Evaluation Module (EVM), and we'll use the old method -- take it apart.

It should be noted that any dismantling of the light engine will void the NIRscan Nano EVM's warranty. In addition, removing the hood from the light engine can cause dust and dirt to collect on the optics, affecting system performance. In addition, removing the upper cover moves the optics, slits, and detectors, causing these components to misalign, requiring the manufacturer to re-align and calibrate. Once the slot is removed, the InGaAs detector and DLP2010NIR need to be returned to the factory for system alignment and calibration.

In a word, this thing cannot be tried at home.

Let's take a quick tour. The DLP-based spectrometer replaces the traditional linear array detector with a wavelength selective digital micromirror device (DMD) and a single point detector. By sequentially opening a set of mirror columns corresponding to light of a specific wavelength, corresponding rays are directed to the detector and captured. The absorption spectrum can be calculated by scanning a set of mirror columns on the DMD.

DLP technology in near-infrared (NIR) spectral analysis offers the following advantages:

• Higher performance can be achieved with larger single-point 1 mm detectors than with linear array detectors with very small pixels.

· Use of cell detectors and low-cost optics can help achieve lower system costs. High-resolution DMDs enable custom graphics to compensate for the optical distortion of each individual system.

The capture of larger signals not only benefits from the larger etendue of DMD over traditional technologies, but also benefits from its fast, flexible, and programmable display modes and spectral filter designs.

· With programmable display mode, the DLP spectrometer can:

o Change the intensity of light reaching the detector by controlling the number of pixels in a mirror column.

o Change the resolution of the system by controlling the width of the mirror column.

o Capture multiple wavelengths of light within a single image by using a set of Hadamard graphics. Then, individual wavelength data can be obtained by decoding. Within each mode, 50% of the number of DMD pixels is turned on, leading to a stronger signal than the column scan method mentioned above to the detector.

o Use custom spectral filters to select the specific wavelengths needed.

Currently, the DLPNIRscan Nano EVM software supports variable resolution and Hadamard graphics. Variable intensity and custom spectral filters are not supported at this time.

In the following picture, you can see the main components of the DLP NIRscan Nano EVM: