Refractive Index: Index AFTER the surface (material ray enters)
System Configuration
Wavelengths
F, d, C Fraunhofer lines
Field Points
Conjugates & Stop
mm or "Infinity"
Lens Prescription
Enter surface data. The LAST surface is the image plane. Index/Abbe specify the material AFTER each surface.
Surf
Radius (mm)
Thickness
nd
Vd
Semi-Dia
Conic K
Stop
Comment
Analysis Controls
Ready. Load an example or enter a prescription to begin.
EFL -- mm
BFL -- mm
F/# --
Total Track -- mm
Image NA --
Paraxial & Seidel
2D Layout
Spot Diagram
Ray Fan
OPD / Wavefront
PSF
MTF
Validation
First-Order Properties & Seidel Aberrations
Run analysis to see first-order properties...
Seidel aberration coefficients will appear here...
System Layout with Ray Trace
Y-Z Meridional Section
Spot Diagrams
Transverse Ray Aberration (Ray Fan)
Optical Path Difference (Wavefront Error)
Zernike Decomposition (Noll ordering)
Zernike coefficients will appear after analysis...
Point Spread Function (Diffraction)
Modulation Transfer Function
MTF vs Spatial Frequency
MTF data will appear here...
Validation Against Known Systems
Click "Run Full Analysis" on a known system to see validation results.
This tool validates against:
• Thin lens formula for simple systems
• Known Seidel coefficients
• Diffraction-limited PSF for well-corrected systems
• Paraxial ray trace consistency checks