barrel distortion


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Related to barrel distortion: Pincushion distortion

barrel distortion

See distortion.

barrel distortion

[′bar·əl dis′tȯr·shən]
(optics)
A defect in an optical system whereby lateral magnification decreases with object size; the image of a square then appears barrel-shaped.

barrel distortion

A screen distortion in which the sides bow out. Contrast with pincushioning.
References in periodicals archive ?
We noted no astigmatism, curvature of field, barrel distortion, or rolling distortion.
During testing I detected no spherical aberration, astigmatism, barrel distortion or rolling distortion.
Theia leveraged their patented Linear Optical Technology[TM] platform with all-optical barrel distortion correction to provide a nominal 110 degree horizontal field of view (HFOV) with a 1/3" sensor and up to 120 degrees HFOV with a 1/2.
If the top and bottom of the pole move toward the center, the scope has barrel distortion If the pole ends move away from the center it has pin cushion distortion.