Photodiode (Pixel) Resolution

The bandwidth of wavelengths on an individual photodiode is referred to as photodiode or pixel resolution.

If 150 photodiodes are available in the UV range (200 - 350 nm), the photodiode resolution is 150 nm / 150 photodiodes = 1 nm per photodiode.

The Optical Resolution of the UV detector is determined by photodiode resolution and the optics (mirror, slit, grating, optical bandwidth).