CEFR C2

field lens

noun

Meaning

The lens in an optical system that is positioned nearest to the objective, serving to converge light rays to form an image within the eyepiece assembly.

Examples

In a standard Huygens eyepiece, the field lens is the larger glass element located at the bottom.
Adjusting the distance between the field lens and the eye lens changes the magnification of the telescope.

Synonyms: collector lens

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field lens (C2)

noun

Pronunciation: /fiːld lɛnz/

Definition

The lens in an optical system that is positioned nearest to the objective, serving to converge light rays to form an image within the eyepiece assembly.

Examples

In a standard Huygens eyepiece, the field lens is the larger glass element located at the bottom.
Adjusting the distance between the field lens and the eye lens changes the magnification of the telescope.

Synonyms of field lens

Words with a similar meaning to field lens:

collector lens

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