The grating spectrometer developed by us in connection with a simple C-mount camera, such as the "Rasperry Pi HQ" camera, allows the investigation of a wide variety of light sources and this despite simple and inexpensive assembly. Our spectrometer achieves a resolution of about 1 nm in the visible waveband from 400 nm - 800 nm.
Thanks to the high resolution and the wide spectral range, physical phenomena such as thin film interference, transmission properties of various substances, but also photoluminescence of dyes and even the absorption lines of hydrogen in the emission spectrum of our sun can be observed, studied and measured. With our software SpecControl you have an easy to use tool at your disposal, which has implemented different spectroscopy modes in addition to a calibration routine.
The spectrometer requires:
- 3D-printed components
- A transmission-grating (1000 lines/mm, as shown in the pictures. Available at hobby stores for a few euros).
- A razor blade for the entrance gap (plus superglue and cling film)
- Nine M4x10 screws
Brief assembly instructions are available. Click here for the PDF download. A tutorial on the setup is coming soon.
Download and accessories
DOWNLOAD
The required model files can be downloaded here at www.Thingiverse.com.
Accessories
Matching the spectrometer:
- extensions for the spectrometer are available here
- a module for transmission and photoluminescence measurements is available here
Component overview
USB spectrometer
The following files must be downloaded and printed for the grating spectrometer:
- USBspectrometer-mainbody.stl (the main body of the spectrometer)
- USBspectrometer-frontcover.stl (a cover for the main body to avoid background light in the optical path)
- USBspectrometer-slit.stl (slit-mount to build up the narrow entry gap with a razor blade)
- USBspectrometer-camholder.stl.stl (connecting element to clamp the C-mount camera with a standard 5-50 mm objective)
- USBspectrometer-camclamp.stl(second part of the connecting element)_
- USBspectrometer-collimationlens.stl(enables the installation of a collimation lens (C-mount) behind the slit)
Impressions
