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Field curvature: the image "plane" (the arc) deviates from a flat surface (the vertical line).
Petzval field curvature, named for Joseph Petzval,[1] describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object past the hyperfocal distance) cannot be brought properly into focus on a flat image plane.[citation needed] Field curvature can be corrected with the use of a field flattener, designs can also incorporate a curved focal plane like in the case of the human eye in order to improve image quality at the focal surface.
^Riedl, Max J. (2001). Optical Design Fundamentals for Infrared Systems. SPIE Press. pp. 40–. ISBN 9780819440518. Retrieved 3 November 2012.
and 18 Related for: Petzval field curvature information
Petzvalfieldcurvature, named for Joseph Petzval, describes the optical aberration in which a flat object normal to the optical axis (or a non-flat object...
Petzvalfieldcurvature of an optical system, mitigating the field-angle dependence of the focal length of a system. The object in designing a field flattening...
Joseph Petzval (6 January 1807 – 17 September 1891) was a mathematician, inventor, and physicist best known for his work in optics. He was born in the...
elimination of astigmatism and curvature of the field, if the collective lens has a greater refractive index (this follows from the Petzval equation; see L. Seidel...
The Petzval objective, or Petzval lens, is the first photographic portrait objective lens (with a 160 mm focal length) in the history of photography....
between (in the absence of coma) an elliptical shape. Petzvalfieldcurvature The Petzvalfieldcurvature means that the image, instead of lying in a plane...
diopters. It can be reduced by stopping down, which increases depth of field so that though the different wavelengths focus at different distances, they...
the material has low dispersion. Other kinds of aberration include fieldcurvature, barrel and pincushion distortion, and astigmatism. Even if a lens...
sensor, Sony prototyped a curved sensor in 2014 to reduce/eliminate Petzvalfieldcurvature that occurs with a flat sensor. Use of a curved sensor allows a...
measurement is taken from the film plane to the subject. Due to Petzvalfieldcurvature, the film plane upon which a lens focuses may not be a literal...
The field of focus is expressed by the Petzvalfieldcurvature, also known as Petzval sum. This was defined by the mathematician Joseph Petzval as the...
remains present in the Wright camera, it combines with the mirror's Petzvalfieldcurvature to result in a flat best image surface. In effect, the only monochromatic...
the brightness of approximately 150,000 main sequence stars in a fixed field of view. These data were transmitted to Earth, then analyzed to detect periodic...
of the light, creating a fuzzy image at the edge of the frame. (Petzvalfieldcurvature and other aberrations.) To correct this, lenses use extra pieces...
all optical aberrations totaling zero to the third-order, except for the Petzval surface which is gently curved. The Yolo was developed by Arthur S. Leonard...
: 37 The Petzval Portrait was the dominant portrait lens for nearly a century. It had what would now be considered severe fieldcurvature and astigmatism...
produced telescope objectives by calculation in 1819, and Josef Maximilian Petzval had done the same for the camera objective in Vienna with Johann Friedrich...
glass plano-concave lens. By 1841 Voigtländer using the design of Joseph Petzval manufactured the first commercially successful two element lens. Carl Zeiss...
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