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DLPNIRSCANEVM: Why two DLP evaluation modules have huge price difference? Also, what knowledge, effort, and time would required to build my own DLP (spectrometer) using DMD ?

YOUNG HO SHIN
Prodigy 40 points
Part Number: DLPNIRSCANEVM
Other Parts Discussed in Thread: DLPNIRNANOEVM, TIDA-00554

Hi, I am currently considering to purchase either one of evaluation module below.

1. DLP® NIRscan™ Evaluation Module ( $ 8,500)

2. DLPNIRNANOEVM DLP® NIRscan™ Nano Evaluation Module ($ 1,000)

I know the first one has more capability of scanning broader NIR wavelength, but does that really make that much of price difference? I just wonder what makes price difference between two evaluation modules. 

Also, I am very new to DMD technology and I do not have much experience with this technology and analog circuit designing. Will it be possible to replace the grating from my custom designed spectrometer (my grad school project) with DMD? What knowledge and effort will possibly be required? Can I buy one of the modules above and refer those schematics, codes, and designs for my application (VIS and NIR scanning). 

Sorry for too many questions.  

  • 0
    TI__Mastermind 30600 points
    Hi Young Ho Shin,

    Thanks for your question and welcome to the DLP forums.

    The main driver of price for these two units is the size of the optics and the production difficulty. The NIRscan evalution module uses a larger, more expensive DMD which in turn means more expensive optics and production.

    To fully design your own spectrometer will take a lot of work and time - I would recommend looking at the source code for the NIRscan Nano to get a sense of what is required. Please also look at TIDA-00554 which is the reference design for the NIRscan Nano - that will provide some information on the physical design and optical architecture. A full design requires extensive knowledge of software, electronics and optics.

    If you would like to use one of the modules for a project, I would recommend using the NIRscan Nano and the reference design that I mentioned.

    Best,
    Paul