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Photonics Dictionary

hypercentric lens

A hypercentric lens refers to a lens system where the chief rays of light from an object are directed through the center of the lens aperture, ensuring that the entrance pupil is situated at infinity. This design eliminates perspective and parallax errors and provides a highly accurate and distortion-free representation of objects being imaged.

Key characteristics and uses of hypercentric lenses include:

Elimination of perspective errors: By ensuring that the chief rays pass through the lens center, hypercentric lenses minimize or eliminate perspective errors that can distort the apparent size or shape of objects.

Applications: Commonly used in machine vision systems for precise measurement tasks, such as dimensional metrology, where accurate sizing and positioning of objects are critical.

Optical design: Hypercentric lenses often feature complex optical designs to achieve high resolution and minimize aberrations, ensuring clear and accurate imaging.

Hypercentric lenses are valued for their ability to provide accurate and distortion-free images in applications requiring precise measurements and analysis, particularly where dimensional accuracy and consistency are essential.
 

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