Axis

Optical power

dioptredpt

The reciprocal-metre unit of lens power.

Dimension
1/L
Canonical signature
L^-1
System
si accepted
Exactness
Exact

Definition record

How this unit is defined

Canonical base
1 dpt = 1 m⁻¹
Conversion type
linear
Aliases
diopter, diopters, dioptres

Same dimension

Related units

dot per inchcssdpiinverse metresim⁻¹inverse centimetresicm⁻¹pixel per centimetrecssppcmkaysermetric historicalkayser

Common conversions

Every conversion routes through the canonical base of the dimension.

1 dpt = 1 m⁻¹

Exact relationship

10 dpt = 10 m⁻¹

Exact relationship