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18 Cards in this Set

  • Front
  • Back
spherical Aberration
peripheral rays focus @ different points on optic axis
Coma
off axis object causes image to have difference in mag

image is cone shaped
Oblique Astigmatism
AKA: Radial Astigmatism, Marignial Astigmatism

off axis ray causeing 2 line images
Astigmatic Difference
Distance btw line foci in Oblique Astigmatism
Oblique Astimatic Error
Dioptric difference btw 2 images in oblique astigmatism
Pantoscopic
180
Base Down prism
Face Form
090
Base Out prism
Curvature of Field
sphere off power in periphery

focuses on Petzval Surface
Image Shell Error
Dipotric difference btw Petzval Surface & where image should focus
Distortion
different Mag in periphery in proportion to distance from OC
Corrected Curve (Best Form lenses)
minimizes Obique Astigmatism, Power Error, & Distortion
completely corrects oblique astigmatism only
Point Focal Lens
tries to correct Power Error only
Percival Form Lens
compromise btw Point focal & percival lenses
minimum tangential error form
circle
horizontal plane through upright cone

P=1
Ellipse
angle plane through cone that don't intersect base

Oblate Ellipse: P >1

Prolate Ellipse: 0 < P < 1
Parabola
plane is parallel to one side of cone

P = 0
Hyperbola
plane has greater angle w/base than cone w/base

P < 0