Diffuser cap and cone design

Hi,
Recently i bought As7265x triad. It has 3 leds. Whether there is a diffuser cap on it for uniform illumination or is it possible to customize? What is the optimal focus distance to get maximum signal?
Thank you

Those will all depend on what you’ll be measuring, the surrounding environment’s lightings/reflective conditions and the like, etc

Distance can be tested in real-time, view the processing example to see the channels (representing their respective wavelengths) change as you adjust

You’ll want to perform a fully-dark calibration and a fully-lit calibration to help minimize ‘noise’

As for the diffusers, they can both help or hinder, depending on the application…feel free to experiment

I will say I had great results in my testing using the on-board LEDs and a normal room with a ‘dark box’ that I cobbled together with cardboard