What you provide
What you provide
- Focal length expressed in m, using the same scenario as the other inputs
- Object distance expressed in m, using the same scenario as the other inputs
PHYSICS / OPTICS
Thin Lens Calculator
Solve image distance for a thin lens from focal length and object distance. Inspect the governing equation, substituted SI values, output, and model boundaries in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Solve image distance for a thin lens from focal length and object distance. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
d_i = fd_o/(d_o-f)
What you receive
What you receive
- Image distance in m from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Paraxial rays, a thin lens, and the displayed real-is-positive sign convention are assumed.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors