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Diffusor für AmbientLight Bricklets


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Hallo TinkerUnity

Für die Messung der Lichteinstrahlung auf eine bestimmte Fläche werden 9 Stück AmbientLight Bricklets eingesetzt (3x3 Raster). Die Bricklets sind aber sehr stark in eine Richtung orientiert. Um dies etwas abzuschwächen, würde ich gerne jeweils einen Diffusor montieren.

Mit schwebt dabei eine Halbschale vor, wie sie für übliche Belichtungsmesser oder Luxmeter verwendet werden (siehe angehängtes Bild).


  • Trotz langer Suche habe ich keine solche Diffusoren zu kaufen gefunden. Hat jemand eine Idee oder einen anderen Ansatz dafür?

Freue mich auf jeden Hinweis.

Mit den besten Grüssen,



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It is used to measure the light-distribution of different LED-spotlights within a distance of around 1m. The sensors are distributed as grid and using Python and matplotlib, the measurements are plotted as animated graph to show the light distribution. The requirement for the spotlights is an uniformly illumination as possible.

The spotlights are later used for a photogrammetrical measurement setup within a cutter-head of a tunnel-boring-machine. For this reason, the illumination has to be as uniform as possible to prevent a light-concentration at the center of the images.

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Yeah, I am just running a calibration of all the sensors using the diffuser and a single reference. Works well and I get the individual differences of the ambient-light sensors corrected.

For this purpose, I am using a halogen-lamp dimmed by an analog-out bricklet between 0V and 12V. After each step in- or decreasing the voltage, the measured value of the ambient-light sensor is stored in combination with the voltage.

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