Thin Lens Equation Calculator

Calculates the relationship between object distance, image distance, and focal length for thin lenses using the standard lens equation formula (1/f = 1/d_o + 1/d_i). Users input the known values—such as either the object's distance or the resulting image's distance—and the calculator determines the unknown variable. The tool handles various units and provides a clear, step-by-step solution for finding any single missing value in the equation. Students studying optics, physics enthusiasts, and science educators utilize this resource to solve complex lens problems quickly and accurately. It helps confirm theoretical understanding of Gaussian lens behavior and image formation principles. By providing an immediate calculation of focal length or principal distances, users can verify their manual calculations and deepen their comprehension of optical physics concepts.