focal plane
noun
: a plane that is perpendicular to the axis of a lens or mirror and passes through the focus
Examples of focal plane in a Sentence
Recent Examples on the Web
Cons of Iron Sights for Hunters Unlike optical sights, which put the reticle and the target in the same focal plane and require your eye to focus on only that plane, iron sights involve three focal planes: rear sight, front sight, and target.
—
David E. Petzal, Field & Stream, 30 Jan. 2023
The focal plane took six months to assemble.
—Ashley Strickland, CNN, 8 Sep. 2020
That said, the a7R V sports a pro-grade mechanical focal plane shutter, with support for electronic first curtain, but those are long-running features in the series.
—PCMAG, 31 Oct. 2022
Focusing is fast and accurate, the focal plane seems bigger, there’s no discernible shutter lag, and most of all: the pictures look better.
—Dieter Bohn, The Verge, 21 Jan. 2021
Every night between December 2009 and March 2019 that the moon was not overly bright, the telescope tracked a patch of sky, and the fibers fed the light that fell onto the focal plane into two spectrographs.
—Kyle Dawson, Scientific American, 1 May 2021
One end of each cable was supported by an aluminum plate positioned at the focal plane of the telescope.
—Kyle Dawson, Scientific American, 1 May 2021
In confocal microscopy the focal plane is imaged with a single, intense point of light, centered between two cones of light that flood the rest of the sample.
—Jen Christiansen, Scientific American, 21 May 2013
The first-focal plane design lets the shooter take maximum advantage of the reference marks in the reticle.
—Will Brantley, Field & Stream, 21 Dec. 2020
David E. Petzal, Field & Stream, 30 Jan. 2023
The focal plane took six months to assemble.
—Ashley Strickland, CNN, 8 Sep. 2020
That said, the a7R V sports a pro-grade mechanical focal plane shutter, with support for electronic first curtain, but those are long-running features in the series.
—PCMAG, 31 Oct. 2022
Focusing is fast and accurate, the focal plane seems bigger, there’s no discernible shutter lag, and most of all: the pictures look better.
—Dieter Bohn, The Verge, 21 Jan. 2021
Every night between December 2009 and March 2019 that the moon was not overly bright, the telescope tracked a patch of sky, and the fibers fed the light that fell onto the focal plane into two spectrographs.
—Kyle Dawson, Scientific American, 1 May 2021
One end of each cable was supported by an aluminum plate positioned at the focal plane of the telescope.
—Kyle Dawson, Scientific American, 1 May 2021
In confocal microscopy the focal plane is imaged with a single, intense point of light, centered between two cones of light that flood the rest of the sample.
—Jen Christiansen, Scientific American, 21 May 2013
The first-focal plane design lets the shooter take maximum advantage of the reference marks in the reticle.
—Will Brantley, Field & Stream, 21 Dec. 2020
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'focal plane.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near focal plane
Cite this Entry
“Focal plane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/focal%20plane. Accessed 26 Apr. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share