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