PhysRefPhysics reference
Optics
Optics

Lens Magnification

M=−didoM = -\frac{d_i}{d_o}

Linear magnification of a thin lens. Negative values indicate inverted images.

Variables

M
Magnification
unitless
d_i
Image distance
m
d_o
Object distance
m

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Common questions

What is the Lens Magnification formula?

Lens Magnification is written M = -dᵢ/dₒ. Linear magnification of a thin lens. Negative values indicate inverted images. It belongs to Optics, under Lenses.

What are the units in M = -dᵢ/dₒ?

In SI units, M is magnification (dimensionless); d_i is image distance, measured in m; d_o is object distance, measured in m.