Thin Lens Calculator
Solve the thin lens equation.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator solves the thin lens equation, 1/f = 1/dₒ + 1/dᵢ, for image distance given a focal length and object distance, and also computes magnification as −dᵢ/dₒ, telling you whether the resulting image is enlarged, reduced, upright or inverted.
It's used in optics coursework, and by photographers and camera designers reasoning about focal length, lens focus distance and image size, as well as anyone working through problems involving magnifying glasses, projectors or simple telescopes.
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