Lens Simulator
Interactive simulation — adjust parameters and watch the visualization update in real time.
How it works
Thin-lens ray diagrams use three principal rays: parallel to the axis then through the focal point; straight through the lens center; through the object-side focal point then parallel to the axis. The thin-lens equation links object distance, image distance, and focal length.
Key equations
1/f = 1/d_o + 1/d_i
m = h_i/h_o = −d_i/d_o