Critério de Rayleigh
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- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
Rayleigh
About this calculator
The Rayleigh diffraction limit calculator is a useful tool for calculating the resolution limit of an optical system. It uses the formula θ = 1.22·λ/D, where θ is the resolution angle, λ is the wavelength of light, and D is the diameter of the optical system.
This calculator is important in physics, especially in the field of optics, as it helps determine the ability of a system to distinguish between two nearby points. This is crucial in applications such as microscopy, telescopes, and vision systems.
To use the calculator, simply enter the known values of λ and D, and the calculator will provide the value of θ. This can be useful in a variety of situations, such as in the design of optical systems or in image analysis.
It is worth noting that the Rayleigh formula is an approximation and may not be exact in all cases. However, it provides a good estimate of the resolution limit of an optical system and is widely used in practice.
Frequently asked questions
What is the Rayleigh diffraction limit?
The Rayleigh diffraction limit is the smallest resolution angle that an optical system can achieve. It is calculated using the formula θ = 1.22·λ/D.
Why is the Rayleigh diffraction limit important?
The Rayleigh diffraction limit is important because it determines the ability of an optical system to distinguish between two nearby points. This is crucial in applications such as microscopy and telescopes.
How is the Rayleigh diffraction limit calculated?
The Rayleigh diffraction limit can be calculated using the formula θ = 1.22·λ/D, where θ is the resolution angle, λ is the wavelength of light, and D is the diameter of the optical system.
What are the limitations of the Rayleigh formula?
The Rayleigh formula is an approximation and may not be exact in all cases. It assumes that the optical system is perfect and does not take into account factors such as optical aberration and noise.
In what situations is the Rayleigh diffraction limit important?
The Rayleigh diffraction limit is important in situations such as microscopy, telescopes, vision systems, and any other application that requires the resolution of high-quality images.