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10 Cards in this Set
- Front
- Back
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Which Aberr. can be controlled using a base curve of back vertex?
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Radial Astig.
Think - Tscherning's ellipse |
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Which aberration involve more than one wavelength of light?
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Chromatic
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Marginal Rays are a type of which aberr.
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Spherical
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Longitudinal Sphe. Aberr.
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Result from ON and Off axis rays
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Coma
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result from only OFF axis rays
Property of magnification |
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Radial Astigmatism
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due to rays striking lens obliquely (tilt)
Teacup and saucer FA = F tan^2 theta |
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Curvature of Field
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Intertwined with RA
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Petsval surface
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image created by a system with NO RA, but is still warped due to curvature of field.
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Distortion
Plus lens Minus lens |
doesn't cause blur of poor res.
corret with orthochromatic dublet Plus= pin cushion Minus= Barrel |
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Chromatic aberration
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results for diff. wavelengths
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