Spots may be displayed vs. field, wavelength and zoom position, overlayed or separated.
|Rim ray aberrations may be shown as transverse ray aberrations or as the optical pathlength difference. Aberrations of multi-configuration (zoom) systems are plotted on one sheet, which provides an excellent overview (no need to plot each position separately).|
|Astigmatism / Field Curvature
The longitudinal field curvature plot yields an excellent picture of the correction of the Petzval curvature and the astigmetism. Shown for all wavelengths used in the optical system.
Shows the distortion of a rectangular object grid as imaged through the optical system.
The vignetting plot shows the mechanical limitation or obstruction of oblique beams. It reduces the off-axis illumination in the image. However, it also plays an important role in determining the off-axis image quality.
Plots the used portion of the light beams at selected surfaces. Often used in conjunction with the vignetting analysis, since the plot shows how individual beams are truncated.
Longitudinal position of the paraxial focus as a function of wavelength, here shown for a decent apochromatic refractor lens.
|Transmission vs. Surface:
Shows the contribution of each surface to the transmission losses in an optical system. Plotted for all fields defined in the system. The plot to the left shows a system with 13 lenses (26 surfaces). Each surface contributes between 4% and 9% to the transmission loss (depending on the index of refraction of a lens). The inner lenses are anti-reflection coated while the outer lenses are not.
Transmission can also be plotted against wavelength or field.