Lens Focal Length Calculator
Estimate thin-lens focal length for common spherical lens forms from curvature and refractive index.
Open calculator →Optics & Photonics Calculators
Optics calculators for lens geometry, focal length, imaging relationships, and photonics design fundamentals.
Every calculator below is a focused interface over an existing Neutron STEM Lab engineering engine. Use the standalone route for a fast result, then move into the linked workbench when the calculation becomes part of a larger design or simulation.
Continue into the full engineering workbenches
The standalone calculators are intentionally narrow. These linked workbenches use the same underlying engines while adding broader analysis, simulation, comparison, and design workflows.
Lens Ray Simulator
Trace parallel rays through configurable spherical lens surfaces using Snell’s law and inspect focal behavior and spherical aberration.