Optical system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorJu Hwa SON
Life of this patent
Estimating the term…
Abstract
An optical system includes a first lens having negative refractive power and having two concave surfaces, a second lens having positive refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power, a sixth lens having refractive power, and a seventh lens having refractive power. The first to seventh lenses are sequentially disposed from an object side. Whereby an aberration improvement effect may be increased and high resolution and a wide angle may be implemented.
Claims49
An optical system comprising:
- a first lens having negative refractive power and having two concave surfaces;
- a second lens having positive refractive power;
- a third lens having refractive power;
- a fourth lens having refractive power;
- a fifth lens having refractive power;
- a sixth lens having refractive power;
- and
- a seventh lens having refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side, and
- the seventh lens has at least one inflection point formed on at least one of an object-side surface and an image-side surface of the seventh lens.
An optical system comprising:
- a first lens having negative refractive power and having two concave surfaces;
- a second lens having refractive power;
- a third lens having refractive power;
- a fourth lens having refractive power;
- a fifth lens having refractive power;
- a sixth lens having refractive power;
- and
- a seventh lens having refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side,
- the second lens among the first to seventh lenses has a second largest effective radius, and
- the seventh lens has at least one inflection point formed on at least one of an object-side surface and an image-side surface of the seventh lens.
An optical system comprising:
- a first lens having negative refractive power;
- a second lens having positive refractive power;
- a third lens having positive refractive power;
- a fourth lens having positive refractive power;
- a fifth lens having negative refractive power;
- a sixth lens having positive refractive power;
- and
- a seventh lens having positive refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side, and
- the seventh lens has at least one inflection point formed on at least one of an object-side surface and an image-side surface of the seventh lens.
An optical system comprising:
- a first lens having negative refractive power;
- a second lens having positive refractive power;
- a third lens having positive refractive power;
- a fourth lens having positive refractive power;
- a fifth lens having negative refractive power;
- a sixth lens having positive refractive power;
- and
- a seventh lens having negative refractive power,
- wherein the first to seventh lenses are sequentially disposed from an object side, and
- the seventh lens has at least one inflection point formed on at least one of an object-side surface and an image-side surface of the seventh lens.
Dependencies are inferred from the claim text.