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  • “focal length”

focal length

The distance from a lens at which light passing through the lens converges.

Synonyms: focal distance

Related MicroscopyU Article

Geometrical Construction of Ray Diagrams

A popular method of representing a train of propagating light waves involves the application of geometrical optics to determine the size and location of images formed by a lens or multi-lens system. This tutorial explores how two representative light rays can establish the parameters of an imaging scenario.

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