3D-printable VIS-IR spectrometer (reflective)
Description
A spectroscope for UV-IR spectrometry. I used an ELP USB-camera with and adjustable lens (this brand, they also have an Alieexpress store: https://www.webcamerausb.com/) and a piece of a broken CD as a diffraction grating. The camera housing is taken apart and attached to the spectroscope using the front panel. The CD is held in place with a holder that can be rotated to any angle. The entrace is a 0,8 mm slit, that can be narrowed using slit inserts to up to 0,1 mm. A toslink optical cable can be attached to the ligt entrance to make pointing at a light source easier. I uploaded a version with a 25 degree angle between camera and slit, and a version with a 35 degree angle between the camera and slit ("increase angle"). I also uploaded the FreeCAD files if you want to make adjustments. I'm still a novice at CAD, so they aren't the easiest to modify though. I reccomend the user-friendly software Theremino Spectrometer to interpret the spectra: https://www.theremino.com/en/downloads/automation (scroll down on this page until ou see the spectrometer section) The spectrum in the images is from a neon bulb.
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