Optical system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsDong Hyuk Jang, Jong Gi Lee, Yong Joo Jo
Life of this patent
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Abstract
An optical system includes a first lens group including at least one lens, and a second lens group including at least one lens, wherein the first lens group and the second lens group are disposed in order from an object side, wherein each of the first lens group and the second lens group is configured to move in an optical axis direction to change a magnification between a wide-angle end and a telephoto end, and wherein G1F is a focal length of the first lens group, G2F is a focal length of the second lens group, and |G1F/G2F| has a value of between 0.5 and 1.
Claims14
An optical system, comprising:
- a first lens group including a plurality of lenses;
- and
- a second lens group including a plurality of lenses,
- wherein the first lens group and the second lens group are disposed in order from an object side,
- wherein among the lenses included in the second lens group, a lens disposed adjacent to a lens disposed farthest from the object side has an inflection point,
- wherein each of the first lens group and the second lens group is configured to move in an optical axis direction to change a magnification between a wide-angle end and a telephoto end,
- wherein G1F is a focal length of the first lens group, G2F is a focal length of the second lens group, and |G1F/G2F| has a value of between 0.5 and 1,
- wherein the lenses of the first lens group are disposed with spaces therebetween along an optical axis,
- wherein the lenses of the second lens group are disposed with spaces therebetween along the optical axis,
- wherein the lens disposed adjacent to the lens disposed farthest from the object side has positive refractive power, and
- wherein the lens disposed farthest from the object side has negative refractive power.
An optical system, comprising:
- a first lens group including at least one lens;
- and
- a second lens group including at least one lens,
- wherein the first lens group and the second lens group are disposed in order from an object side,
- wherein each of the first lens group and the second lens group is configured to move in an optical axis direction to change a magnification between a wide-angle end and a telephoto end,
- wherein G1F is a focal length of the first lens group, G2F is a focal length of the second lens group, and |G1F/G2F| has a value of between 0.5 and 1,
- wherein the first lens group includes a first lens, a second lens, and a third lens disposed in order from the object side to the image side, and
- wherein 1x_f is a focal length of the optical system at the wide-angle end, f3 is a focal length of the third lens, and |1x_f/f3| has a value of between 1 and 2.
An optical system, comprising:
- a first lens group including at least one lens;
- and
- a second lens group including at least one lens,
- wherein the first lens group and the second lens group are disposed in order from an object side,
- wherein each of the first lens group and the second lens group is configured to move in an optical axis direction to change a magnification between a wide-angle end and a telephoto end,
- wherein G1F is a focal length of the first lens group, G2F is a focal length of the second lens group, and |G1F/G2F| has a value of between 0.5 and 1,
- wherein the first lens group includes a first lens, a second lens, and a third lens disposed in order from the object side to the image side, and
- wherein 2x_f is a focal length of the optical system at the telephoto end, f3 is a focal length of the third lens, and |2x_f/f3| has a value of between 2 and 3.8.
Dependencies are inferred from the claim text.