Optical Power Calculator

The Optical Power Calculator will calculate the:

Optical power produced by a single lens
Optical power produced by two lenses in contact with each other
Optical power produced by two lenses at a certain distance from each other

Optical Power Calculator
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Calculator Precision (Decimal Places)
Focal length of the first lens (F₁) m
Focal length of the second lens (F₂) m
Distance between the two lenses (d) m

Note: Take the focal length of converging lenses as positive and that of diverging lenses as negative.

Optical Power Calculator Results (detailed calculations and formula below)
Optical power of the single lens calculation
The optical power produced by a single lens is D (dioptre)
The optical power produced by two lenses in contact is D (dioptre)
The optical power produced by two lenses at a certain distance from each other is D (dioptre)
P₁ = 1/F₁ P₁ = 1/ P₁ =
Optical power of a system composed by two lenses in contact calculation
P_contact = 1/F₁ + 1/F₂ P_contact = 1/ + 1/ P_contact = P_contact =
Optical power of a system composed by two lenses in distance from each other calculation
P_distance = 1/F₁ + 1/F₂ - d × 1/F₁ × 1/F₂ P_distance = 1/ + 1/ - × 1/ × 1/ P_distance = - × P_distance = - × P_distance = × P_distance =
Optical Power Calculator Input Values
Focal length of the first lens (F₁) m
Focal length of the second lens (F₂) m
Distance between the two lenses (d) m

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each optical power calculation, the Optical Power Calculator will automatically calculate the results and update the Physics formula elements with each element of the optical power calculation. You can then email or print this optical power calculation as required for later use.

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Discover Physics with free Physics Revision Notes and Physics Calculator: Optical Power. This image shows the properties and optical power formula for the Optical Power. Calculate the Optical power produced by a single lens, the Optical power produced by two lenses in contact with each other and the Optical power produced by two lenses at a certain distance from each other

Optical power of the single lens Formula and Calculation

P₁ = 1/F₁

Optical power of a system composed by two lenses in contact Formula and Calculation

P_contact = 1/F₁ + 1/F₂

Optical power of a system composed by two lenses in distance from each other Formula and Calculation

P_distance = 1/F₁ + 1/F₂ - d × 1/F₁ × 1/F₂

Optics Physics Tutorials associated with the Optical Power Calculator

The following Physics tutorials are provided within the Optics section of our Free Physics Tutorials. Each Optics tutorial includes detailed Optics formula and example of how to calculate and resolve specific Optics questions and problems. At the end of each Optics tutorial you will find Optics revision questions with a hidden answer that reveals when clicked. This allows you to learn about Optics and test your knowledge of Physics by answering the test questions on Optics.

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