DLPNIRNANOEVM: Optical fiber with this module

Hi Marcello,
You can use optical fiber with DLP NIR Scan Nano EVM. There is no optical fiber & attachment available from TI and third-party vendor. You have to custom build the fiber cable and adapter head for EVM.

Please refer to section 3 (page 4) of "Texas Instruments DLP® NIRscan™ Nano Evaluation Module (EVM) Optical Design Considerations" application note for optical fiber coupling. www.ti.com/.../dlpa062.pdf

The dimension of input slit for EVM is 1.8 × 0.025 mm. A good of amount of light will be lost is a standard optical fiber is used. You need to build custom fiber with bundle of thinner cable. The fiber bundle should be arranged in linear pattern on EVM end side and a circular pattern on other side. You also need to machine a mounting head to connect EVM.

The optical fiber is beneficial when you want flexibility on the sample probe ex. reach inaccessible area or submerse in liquid. It also help useful if you want to use an external brighter light source.

I have used one such custom built fiber with Ecovis lamp in transmissive configuration with cuvettes. Interestingly, the model prediction performance was similar to "Opteck transmissive head for NanoEVM (www.optecks.com/.../)"

The Optek head uses a dual filament lamp has a higher light output which  is helpful.

Regards,
Vivek