JP2008145584A5

JP2008145584A5 -

Info

Publication number: JP2008145584A5
Application number: JP2006330661A
Authority: JP
Filing date: 2006-12-07
Publication date: 2010-01-07
Anticipated expiration: 2026-12-07

Claims

In order from the object side to the image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having positive refractive power, the optical axis of the second lens group in the moved by an optical system for performing focus, the focal length of the entire system F, the focal length of the first lens group F1, the focal length of the second lens group F2, the focal length of the third lens group F3 And when
0.600 <F1 / F <0.800
0.300 <| F2 | / F <0.450
0.400 <F3 / F <0.600
1.600 <F1 / | F2 | <2.200
An optical system characterized by satisfying the following conditions.

The optical system according to claim 1, wherein the first lens group includes three positive lenses and one negative lens in order from the object side to the image side.

3. An image is moved in a direction perpendicular to the optical axis by moving at least a part of the lens components of the third lens group in a direction having a component perpendicular to the optical axis. The optical system described in 1.

The third lens group comprises, in order from the object side to the image side, the 31 lens component having a positive refractive power, a 32 lens component having a negative refractive power, is composed of 33 lens component having positive refractive power, the second 32 lens component is moved in a direction having a vertical component with respect to the optical axis and move the image in the direction perpendicular to the optical axis, the focal length of the first 31 lens component F 31, the third-second lens component when the focal length of the to F32, the focal length of the first 33 lens components and F33,
0.200 <F31 / F <0.700
0.100 <| F32 | / F <0.350
0.150 <F33 / F <0.500
The optical system according to claim 1, wherein the following condition is satisfied.

An optical system according to any one of claims 1 to 4, the image pickup apparatus characterized by having a solid-state image pickup element for receiving an image formed by the optical system.