4G Continuously Variable Filters and Xenon Flash Lamps

When using Continuously Variable Filters in your optical system it is important to take into consideration how the filter is illuminated.

In this white paper we analyse and provide  recommendations for the situation where the light is originating from a Xenon flash lamp and the filter is the 4G type of Delta Optical Thin Film’s Continuously Variable Filters.

Important characteristics of the light delivery system are the Xenon flash lamp emission profile and the used lens system. These will be described through key parameters such as opening angle, aperture’s dimensions, and zoom factor.

In the white paper, we will show how filter parameters like center wavelength and filter profile depend on beam spot size and opening angle on the filter.