Calculate image distance, object distance, focal length, or magnification using the thin lens equation. Free online optics calculator.
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What is the thin lens equation?
1/f = 1/do + 1/di, where f is the focal length, do is the object distance from the lens, and di is the image distance from the lens.
How is magnification calculated for a thin lens?
Magnification is calculated as m = -di/do, where a negative value indicates an inverted image and a positive value indicates an upright image.
Is this calculator complete?
This tool is currently a placeholder while we build out its full interactive calculator and content. A complete version with charts, reference tables, and detailed explanations is coming soon.
