Fig. 4.

Illustrated schematic for LATIS. Fig. (a). Shows a photograph of the system at tuning setting 1. Fig. (b). Shows the schematic of the system. The filter has a bandpass of 485-660 nm to prevent spectral overlap. Red rays represent the longest wavelength passed by the filter. Blue rays represent the shortest wavelength. Only one sub-pupil image is shown to simplify the schematic. The adjustment from tuning setting 1 to 2 is done by changing the focal length of varifocal lens 1 from 20 mm to 30 mm, the focal length of varifocal lens 2 from 50 mm to 100 mm, and the lenslet array rotation from 0° to 11°. The detector is translated axially via a translation stage to refocus dispersed sub-pupil images between tuning settings.