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Unit 10 review
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Gravity
Terms in this set (21)
aberration
imperfection
zone
ring shaped area on a lens
spherical aberration
difference in focal points horizontally
paraxial zone
near the axis, focuses farther from the lens
marginal zone
near the edge, focuses closer to the lens
How do you find the spherical aberration of a lens?
square the zone number
coma
Vertical difference in focal points
aperture
opening that light passes through
Coma doesn't cause blurring, what does it look like
point sources have a tail
coma increases ____________ the aperture and _________________ with image height
with the square of, directly
astigmatism
vertical rays focus differently than horizontal rays
tangential rays
vertical
sagittal rays
horizontal
astigmatism varies _________________ the height
with the square
distortion
different magnifications in an image
positive (barrel)
magnified in center
negative (pincushion)
magnified on the edges
chromatic aberration
caused by different colors focusing in different places
longitudinal chromatic aberration
different colors have different focal points horizontally
longitudinal chromatic aberration is _____________ height and _______________ aperture
independent of, independent of
Lateral chromatic aberration is _____________height and _____________ aperture
varies directly, independent from
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