Zoom lens
AssigneeSamsung Electronics Co., Ltd.
InventorsJeong-Kil Shin, Byung-Kwon Kang, Dong-Hoon Jang
Life of this patent
Estimating the term…
Abstract
A zoom lens includes a first lens group having a negative refracting force, a second lens group having a positive refracting force and being aligned closer to an image surface than the first lens group, and a third lens group aligned closer to the image surface than the second lens group. The distance between first and second lens groups is shortened and the distance between second and third lens groups is lengthened as the zoom lens performs zooming action from a wide angle position to a telephoto position.
Claims20
A zoom lens configured for creating an image surface, said zoom lens comprising:
- a first lens group having a negative refracting force;
- a second lens group having a positive refracting force and being aligned closer to said image surface than the first lens group;
- and
- a third lens group aligned closer to said image surface than the second lens group, wherein a distance between first and second lens groups is shortened and a distance between second and third lens groups is lengthened as the zoom lens performs zooming action from a wide angle position to a telephoto position.
A zoom lens configured for creating an image surface, said zoom lens comprising:
- a first lens group having a negative refracting force;
- a second lens group having a positive refracting force and being aligned closer to said image surface than the first lens group;
- and
- a third lens group including a reflecting surface for bending an optical axis and being aligned closer to said image surface than the second lens group.
A zoom lens configured for creating an image surface, said zoom lens comprising:
- a first optical system having a negative refracting force;
- a second optical system having a positive refracting force and being aligned closer to said image surface than the first optical system;
- and
- a third optical system aligned closer to said image surface than the second optical system, wherein a distance between first and second optical systems is shortened and a distance between second and optical systems is lengthened as the zoom lens performs zooming action from a wide angle position to a telephoto position.
Dependencies are inferred from the claim text.