I am assembling a project wherein I will be using a full spectrum camera that captures from around 250nm on up into infrared. My goal is to primarily work within the lower wavelength (ultraviolet) / higher energy portion of the spectrum from 400nm down to 250nm, which is the lower bound on this camera.
I have been trying to find a filter (specifically a 37mm filter) that would limit this so that I could primarily work down in the lower wavelength, but I have really been at a loss thus far.
How would one go about either constructing or finding some kind of a UV pass filter such as this that has a higher range rather than highly specific wavelength parameters?