ONE-PIX

The recommended distances of use for macroscopic scenes are between 50 cm and 1 m. The optical flux reflected by the scene decreases in proportion to the square of this distance, so measurement distance should be optimised depending on scene reflectivity to guarantee data quality and limit acquisition times.

By design, the ONE-PIX kit is optimised for the visible spectral range, 400 to 700 nm. It is possible to adapt the instrument optics to extend the spectral range to 800 nm. These parameters also depend on the specifications of the spectrometer used.

Acquisition time is proportional to the spectrometer integration time, the number of repetitions per projection, and the number of structured pattern projections. In real field conditions, the PRO-PIX sensor achieves a compression ratio of 25 percent for professional scenes with no prior knowledge, and below 1 percent with a custom algorithm.

At present, the ONE-PIX kit measures in the visible and near infrared regions. The industrial version, PRO-PIX, measures over a wider spectral range covering UV, VIS and SWIR.

ONE-PIX is a very good lab and teaching tool. It is affordable compared with other spectral cameras, reconfigurable in hardware and software to avoid significant additional costs for future adaptations, and it gives access to a growing community of users and researchers.

To adapt a spectrometer in the ONE-PIX kit, it must be controllable via Python. Depending on your needs, measurement speed or quality should guide which spectrometer to select. Photonics Open Projects is happy to help with these questions.