DLP Near-Infrared Spectrometer (TIDA-00155): modification query

Hi Kris,

There are essentially two ways of accomplishing this:

• Place your detector at the plane of the current detector in the system
• Remote the optical signal via fiber appropriate for the waveband (1350-2450nm)

In the first case, this would likely require modifying or redesigning the detector mounting mechanics to hold a different detector package and provide a sufficient heatsink for the 100K delta from ambient at the detector, assuming your detector is TEC cooled. Second, you would need to design a PCB with the same ADC and output interface as the existing detector board in the design. You would also likely need to modify the cover, as it shields the optics from ambient light and dust, and may need to be modified to hold a different detector, heatsink, and PCB assembly.

In the second case, you would need to design a an opts-mechanical module to couple the energy that is currently going into the detector into a fiber or other medium to get to your detector. The Zemax optical design can be downloaded from the TIDA-00155 TI design page which will show the nominal location and f-number of bundle. Some optics would likely be necessary to couple this into the NA of a fiber. In this case, you could either try to capture data offline, or you could design a detector board with the same ADC and output interface as the existing detector board to interface with the included software, depending on what you are trying to accomplish with the system.

Finally, you may want to speak with Keynote Photonics, who manufactures this design as the DLP NIRscan EVM. They may be able to assist with the modifications necessary or provide additional suggestions depending on your specific application needs.