: 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
Blood Moon 2025: How To Photograph It With A Smartphone
The best way to photograph the eclipse with a smartphone is to hold it up against the eyepiece of any telescope, with impressive results possible.
—
Jamie Carter, Forbes, 13 Mar. 2025
That can be tricky, though, to get your phone in just the right spot behind the eyepiece.
—Mike Lynch, Twin Cities, 9 Mar. 2025
With the telescope trained on the moon, simply position your smartphone’s lens over the eyepiece and take a shot.
—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
See All Example Sentences for eyepiece
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Jamie Carter, Forbes, 13 Mar. 2025
That can be tricky, though, to get your phone in just the right spot behind the eyepiece.
—Mike Lynch, Twin Cities, 9 Mar. 2025
With the telescope trained on the moon, simply position your smartphone’s lens over the eyepiece and take a shot.
—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
See All Example Sentences for eyepiece
Cite this Entry
“Eyepiece.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eyepiece. Accessed 31 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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