Equations
Optical power of a lens
Optics · id lens_power
P = \frac{1}{f}
| Symbol | Quantity | Unit | Meaning | Usual range |
|---|---|---|---|---|
P | lens power | 1/m | Optical power in diopters | 0.01 to 10000 |
f | focal length | m | Focal length of the lens | 0.0001 to 100 |
Assumptions
- Thin lens
- Converging lens
Valid when
- No extra conditions.
Found by
Questions with these words retrieve this equation: diopters, lens power, glasses, focal length, prescription.
Source
OpenStax University Physics Volume 3, Chapter 2 (reference; entry written by the project). License: MIT. Entry confidence: 0.99.