THE 2-MINUTE RULE FOR COOLED LONG-WAVE INFRARED LENSES

The need to take care of the identical picture sharpness demands the identical increase in aperture. During this waveband all the conventional lenses could be looked upon as effectively diffraction confined and for that reason the width on the PSF is:In the situation of a lens that has a hyperfocal distance of fifty feet, it is feasible to adjust f