Imaging with plus lenses Flashcards
1
Q
image beam vergence
A
Power + object beam vergence
2
Q
if vergence =0..
A
object located at infinity
3
Q
lens imaging relationship
A
perhaps the most important relationship in geometrical optics
4
Q
object/image location
A
- m
- to left-negative
- to the right-positive
5
Q
beam vergence
A
inverse of distance
6
Q
object is located 0.5m before the lens. beam vergence is..
A
-2D
7
Q
object vergence is -4D, the object is located…
A
0.25m before the lens
8
Q
Magnification
A
M=hi/ho
9
Q
positive lens, for object distance smaller than the focal distance
A
- virtual, erect , to the left of the lens
- magnification is always M>1
10
Q
positive lens, for object distance larger than the focal distance
A
-real, inverted, M
