Enter the detector element size and the camera focal length into the Calculator. The calculator will evaluate the Instantaneous Field of View.
Instantaneous Field of View Formula
IFOV = DES / CFL
Variables:
- IFOV is the Instantaneous Field of View ()
- DES is the detector element size
- CFL is the camera focal length
To calculate the Instantaneous Field of View, divide the detector element size by the camera focal length.
How to Calculate Instantaneous Field of View?
The following steps outline how to calculate the Instantaneous Field of View.
- First, determine the detector element size.
- Next, determine the camera focal length.
- Next, gather the formula from above = IFOV = DES / CFL.
- Finally, calculate the Instantaneous Field of View.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
detector element size = 2.45
camera focal length = 1.5
FAQs
What is the importance of calculating the Instantaneous Field of View (IFOV)?
The IFOV calculation is crucial for understanding how much of the scene a single pixel of the detector can see at a time, which directly affects the image resolution and the quality of the data captured by the camera system.
How does detector element size affect the IFOV?
A larger detector element size results in a larger IFOV, meaning each pixel sees a wider area of the scene, potentially reducing the detail captured. Conversely, a smaller detector element size results in a smaller IFOV, allowing for finer details to be captured.
Can the Instantaneous Field of View be improved by adjusting the camera focal length?
Yes, adjusting the camera focal length can change the IFOV. Increasing the focal length decreases the IFOV, enhancing the detail captured by each pixel. Reducing the focal length increases the IFOV, capturing a wider area of the scene but with less detail.
Why is it necessary to use a calculator for the Instantaneous Field of View?
Calculating the IFOV manually can be prone to errors, especially with complex formulas or large datasets. Using a calculator ensures accuracy, saves time, and helps in making informed decisions when selecting or adjusting camera systems for specific applications.
