Seidel aberrations
E879170
Seidel aberrations are the primary third-order optical aberrations that describe how lens imperfections cause image defects such as blurring, distortion, and coma in optical systems.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
optical aberration classification
ⓘ
third-order aberration ⓘ |
| alsoKnownAs |
primary aberrations
ⓘ
third-order Seidel aberrations ⓘ |
| appliesTo |
compound optical systems
ⓘ
lenses ⓘ mirrors ⓘ |
| assumes |
paraxial approximation
ⓘ
small aberrations ⓘ |
| cause |
astigmatism in images
ⓘ
blurring of images ⓘ coma in images ⓘ distortion of images ⓘ field curvature ⓘ image defects in optical systems ⓘ spherical aberration ⓘ |
| classificationCriterion | third-order terms in ray coordinates ⓘ |
| component |
astigmatism
ⓘ
coma ⓘ distortion ⓘ field curvature ⓘ spherical aberration ⓘ |
| dependsOn |
aperture stop position
ⓘ
field height ⓘ refractive indices of materials ⓘ surface curvatures of optical elements ⓘ |
| describedIn | third-order aberration theory ⓘ |
| field |
geometrical optics
ⓘ
optics ⓘ |
| goalOfCorrection |
improve image quality
ⓘ
increase resolution ⓘ reduce image blur ⓘ |
| historicalPeriod | 19th century ⓘ |
| mathematicalFormulation |
Seidel sums
NERFINISHED
ⓘ
third-order expansion of wavefront error ⓘ |
| namedAfter | Ludwig von Seidel NERFINISHED ⓘ |
| order | third order ⓘ |
| relatedTo |
Gaussian optics
NERFINISHED
ⓘ
Zernike polynomials NERFINISHED ⓘ wavefront aberration ⓘ |
| usedFor |
aberration balancing
ⓘ
lens design ⓘ optical system optimization ⓘ |
| usedIn |
camera lens design
ⓘ
microscope objective design ⓘ telescope design ⓘ |
| validityRange |
low numerical aperture
ⓘ
small field angles ⓘ |
Referenced by (2)
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