Numerical Aperture (NA) is a dimensionless number that characterizes the range of angles over which an optical system can accept or emit light. It is critical in determining the resolving power and light-gathering ability of optical systems such as microscopes and fiber optics.

Numerical Aperture

dimensionless number

range of angles

An optical system is a configuration of optical components, such as lenses, mirrors, and prisms, designed to manipulate light for a specific purpose, like imaging, focusing, or directing light. These systems are fundamental in various applications, including cameras, telescopes, microscopes, and laser systems, where precise control of light paths is essential for performance and functionality.

optical system

accept or emit light

Resolving power is the ability of an optical or imaging system to distinguish between two closely spaced objects as separate entities. It is a critical parameter in fields like microscopy, astronomy, and photography, often determining the clarity and detail of the observed image.

resolving power

light-gathering ability

Optical systems are assemblies of lenses, mirrors, and other optical elements designed to manipulate light to achieve specific functions such as imaging, focusing, or directing light beams. They are fundamental in various fields, from everyday devices like cameras and eyeglasses to advanced technologies in scientific research and telecommunications.

optical systems

microscopes

Fiber optics is a technology that uses thin strands of glass or plastic fibers to transmit data as light signals over long distances with minimal loss. It is widely used for high-speed internet, telecommunications, and medical imaging due to its high bandwidth and resistance to electromagnetic interference.

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