🧊 3D Optical Bench: Lens, Mirror, Ray Fan and Image on a Screen

A Blender-modelled optical bench with a lamp, arrow slide, glass lens whose shape follows the lensmaker radii, concave or convex mirror, second lens and a screen showing the live blurred image, with a 3D ray fan and six numerical checks.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install