Zemax files for NA=0.29 and NA=0.40 long-working-distance lens objectives assembled by commercial on-catalog singlets

Zemax files of two lens objective with numerical apertures (NA) of 0.29 and 0.4. The objective lenses are made entirely from commercial on-catalog Ø1'' singlets. Both the objectives can correct the spherical aberrations due to the standard flat vacuum glass windows with various thickness. The diffraction-limited fields of view for NA=0.29 and NA=0.4 objectives are 600 μm and 150 μm. The spatial resolutions for the two objectives are 1.8 μm and 1.3 μm at the design wavelength