: the lens or combination of lenses at the eye end of an optical instrument
Examples of eyepiece in a Sentence
Recent Examples on the Web
With the telescope trained on the moon, simply position your smartphone’s lens over the eyepiece and take a shot.
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Jamie Carter, Forbes, 5 Mar. 2025
The devices usually had three eyepieces so that the clerk, customer, and a third curious onlooker (parent, spouse, sibling) could all view the image simultaneously.
—IEEE Spectrum, 30 Oct. 2020
That’s not the case for a monocular, which merely requires one eyepiece to be focused.
—Jamie Carter, Space.com, 20 Jan. 2025
The erect image is then transmitted to the eyepiece lens, where it is magnified for viewing.
—Matt Morris, Space.com, 16 Jan. 2025
See All Example Sentences for eyepiece
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Jamie Carter, Forbes, 5 Mar. 2025
The devices usually had three eyepieces so that the clerk, customer, and a third curious onlooker (parent, spouse, sibling) could all view the image simultaneously.
—IEEE Spectrum, 30 Oct. 2020
That’s not the case for a monocular, which merely requires one eyepiece to be focused.
—Jamie Carter, Space.com, 20 Jan. 2025
The erect image is then transmitted to the eyepiece lens, where it is magnified for viewing.
—Matt Morris, Space.com, 16 Jan. 2025
See All Example Sentences for eyepiece
Cite this Entry
“Eyepiece.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eyepiece. Accessed 9 Mar. 2025.
Copy CitationKids Definition
eyepiece
noun
eye·piece
ˈī-ˌpēs 
: the lens or combination of lenses at the eye end of an optical instrument (as a microscope or telescope)
Medical Definition
eyepiece
noun
eye·piece
ˈī-ˌpēs
: the lens or combination of lenses at the eye end of an optical instrument
called also ocular
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