Kohärenz Psychologie

Numerical aperture (NA) is a dimensionless number that characterizes the range of angles over which a microscope objective can accept or emit light. It is a crucial parameter in photochemistry, particularly in relation to photoresists and lithography, as it directly influences the resolution and depth of focus in optical systems. A higher numerical aperture indicates a greater ability to gather light and resolve fine details, essential for achieving high precision in photolithography processes.

Resolution: The ability of an optical system to distinguish between closely spaced objects, determined by factors like numerical aperture and wavelength of light.

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Photolithography: A process used to transfer geometric patterns onto a substrate, utilizing light-sensitive materials and numerical aperture to define resolution.

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Focal Length: The distance between the lens and the image sensor or film plane, affecting the magnification and field of view in optical systems.