Aperture Area Calculator

Formula

The formula to calculate the aperture area (A) is:

\[ A = \pi \left(\frac{D}{2}\right)^2 = \pi \left(\frac{n}{2f}\right)^2 \]

Where:

Aperture Area: The surface area of an opening that allows light to pass through. It directly affects the amount of light entering a system, influencing the performance and quality of the image or measurement.

Let's say the aperture diameter (D) is 50 mm, the focal length (n) is 100 mm, and the f-number (f) is 2. Using the formula:

\[ A = \pi \left(\frac{50}{2}\right)^2 = \pi \left(\frac{100}{2 \times 2}\right)^2 \]

We get:

\[ A = \pi \times 625 = 1963.50 \, \text{mm}^2 \]

So, the aperture area is approximately 1963.50 mm².