Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsTae Youn LEE, Jin Hwa JUNG, Yong Joo JO
Life of this patent
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Abstract
An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens sequentially disposed from the first lens to the fifth lens from an object-side of the imaging system to an image-side of the imaging system and each having refractive power. The fourth lens has a convex object-side surface and an expression 0.7<TL/f<1.0 is satisfied, where TL is a distance from an object-side surface of the first lens to an imaging plane, and f is an overall focal length of the optical imaging system.
Claims20
An optical imaging system, comprising:
- a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, sequentially disposed from the first lens to the fifth lens from an object-side of the imaging system to an image-side of the imaging system and each having refractive power,
- wherein the fourth lens comprises a convex object-side surface,
- and wherein an expression 0.7<TL/f<1.0 is satisfied, where TL is a distance from an object-side surface of the first lens to an imaging plane, and f is an overall focal length of the optical imaging system.
An optical imaging system, comprising:
- a first lens comprising positive refractive power;
- a second lens comprising negative refractive power;
- a third lens comprising positive refractive power;
- a fourth lens comprising negative refractive power;
- and
- a fifth lens comprising positive refractive power and a refractive index greater than 1.6 and less than 1.75,
- wherein the first to fifth lenses are sequentially disposed from an object-side of the optical imaging system to an image-side of the optical imaging system.
An optical imaging system, comprising:
- a first lens group comprising a first lens, a second lens, and a third lens, wherein a composite focal length of the first lens group is within a range from about 4.5 to about 5.1;
- and
- a second lens group comprising a fourth lens and a fifth lens, wherein a composite focal length of the second lens group is within a range from about −11 to about −6.5,
- wherein the first to fifth lenses are sequentially disposed from an object-side of the optical imaging system to an image-side of the optical imaging system.
Dependencies are inferred from the claim text.