- Optical aberration
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前往 Wikipedia 查看全部内容Petzval field curvature - Wikipedia
Petzval field curvature, named for Joseph Petzval, 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. Field curvature can be corrected with the use of a field flattener, designs can also … 展开
Consider an "ideal" single-element lens system for which all planar wave fronts are focused to a point at distance f from the lens. Placing this lens the distance f from a flat image sensor, image points near the optical axis will be in … 展开
The primary way to control this aberration is by inserting further optical elements which counteract the curved focal plane off axis. This is especially … 展开
CC-BY-SA 许可证中的维基百科文本 Field Curvature - Nikon’s MicroscopyU
Curvature of field in optical microscopy is a common and annoying aberration that is familiar to most experienced microscopists. The tutorial initializes with an image of the specimen (as seen through the microscope) appearing in a window on …
Aberrations - Edmund Optics
在edmundoptics.com上查看更多信息Spherical aberration refers to rays focusing at different distances depending on where they interact with the lens and is a function of aperture size. To describe spherical aberration, the incident angle of light must be known. This angle occurs where light rays strike the curved surface of a lens and is the angle between the r…- 预计阅读时间：9 分钟
4.5: Curvature of Field - Physics LibreTexts
Suppose we have a lens that we have managed to correct for (or at least to minimize) spherical aberration, astigmatism and coma, say by a combination of choosing the right shape of the lens and not going too far off-axis.
The wave aberration function • The wave aberration function is a function of the field H and aperture vectors. H and define uniquely a ray. Because this function represents a scalar, …
Field Curvature - National MagLab
2015年11月13日 · Field Curvature. Curvature of field in optical microscopy is an aberration that is familiar to most experienced microscopists. This artifact is the natural result of using lenses that have curved surfaces. When visible light is …
Field Curvature: Aberration, Correction & Example - StudySmarter
Field curvature is an optical aberration where the best focus planes across the field of view curve away from the lens. Key characteristics include, it being a third-order Seidel aberration, it …
Field Curvature Aberration: What is New? - Optica Publishing Group
This presentation provides an overview of field curvature aberration. Of the monochromatic aberrations field curvature is the most challenging aberration to correct because it often does …
4.6. IMAGE Field curvature - Telescope Optics
In the case of field curvature, the longitudinal aberration L d closely approximates the depth z of the image surface curvature. For the Petzval surface of the radius R P at the height h in the …
Calculation of the wave aberration of field curvature and color ...
2021年1月15日 · Based on the aberration theory of plane-symmetric optical system, this paper develops a method for calculating the wave aberration of the field curvature and color …
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