Little Garden Spectrometer, DIY Spectrometer, Measure LED, Laser, Absorption Spectrum, Based on Theremino

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Description:

Based on the design of Theremino spectometer, a series of optimizations have been made:

1. The pixel of CMOS is 1920*1080, and the Bayer array on the surface of CMOS has been removed to become a black-white camera, making the spectrum sharper;

2. The spectrum range is wider, about 340nm-1050nm;

3. The wavelength deviation of the visible light part can be controlled to 0-1nm, and the ultraviolet and infrared parts can be controlled to 1-3nm (Based on careful calibration);

4. In the future, I will add a multi-point calibration function, and the accuracy of the wavelength can be controlled to within 1nm in the full spectrum range;

5. The resolution is improved, and the characteristic spectrum lines of mercury 577nm and 579nm can be distinguished;

6. The size is smaller, about 100 length, 67 width, and 50 height mm;

7. The outer shell is made of plastic, which is more durable;

8. The Light-distributing paper is not necessary, but it must be added when the light source intensity is very high, or the light source area is relatively small, such as measuring flash lights, lasers, or single LED lamp;

9. The algorithm of the software has been modified (adding irradiation correction, removing background noise, etc.) to measure relative intensity more accurately, and the color temperature, color coordinates, and color rendering index can be calculated with an accuracy of more than 90%;

10. Provide the modified software source code;

11. Thank you so much, Theremino!

My spectrometer can also be "played" like this:

1. Measure the spectra of various light sources, such as LED lights, ceramic metal halide lamps, xenon lamps, neon lamps, halogen lamps, fluorescent lamps, etc.;

2. Perform absorption spectrum experiments, such as the absorption spectrum of chlorophyll (halogen lamps are required as background light sources);

3. Measure the wavelength of the laser (note to add Light-distributing paper. If the laser power is high, the laser can be irradiated on the wall, and then the laser reflected from the wall can be measured)

4. Measure the pass (or absorption) band of the filter;

5. Data can be exported and then plotted in Excel, and a series of changes in the spectrum can be observed;

6. Modify the spectrophotometer;

7. You can design a spectrometer shell for easy use;

8. More usages are waiting for your discovery. . .