eyepiece

American  

[ahy-pees] / ˈaɪˌpis /

noun

1. the lens or combination of lenses in an optical instrument through which the eye views the image formed by the objective lens or lenses; ocular.

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eyepiece British  

/ ˈaɪˌpiːs /

noun

1. the lens or combination of lenses in an optical instrument nearest the eye of the observer

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eyepiece Scientific  

/ ī′pēs′ /

1. The lens or group of lenses closest to the eye in an optical instrument such as a telescope or microscope.

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Etymology

Origin of eyepiece

First recorded in 1780–90; eye + piece

Example Sentences

“Perhaps if I gaze through the telescope, things will come into focus,” she thought, and put her eye to the eyepiece.

From Literature

I wear it forward when the lights are too bright but otherwise backward because it helps keep my eyepiece in place.

From Los Angeles Times

Her children gazed into the eyepiece at strange, eight-legged creatures clambering over the moss.

From New York Times

It wasn’t even a distant gleam yet in Lewis and Clark’s eyepiece.

From Seattle Times

A magnifying eyepiece, produced by 3D printing, fits cellphone cameras and takes photos of microscope slides; AI image analysis then picks out and identifies pathogens.

From Seattle Times