Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorYong 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. The first lens includes a convex object-side surface and a concave image-side surface. The second lens includes a concave object-side surface and a concave image-side surface. The third lens includes a concave object-side surface. The fourth lens includes a concave object-side surface. The fifth lens includes a concave object-side surface and a concave image-side surface. The first to fifth lenses are sequentially disposed from an object side toward an imaging plane.
Claims22
An optical imaging system comprising:
- a first lens having a convex object-side surface and a concave image-side surface;
- a second lens having a concave object-side surface and a concave image-side surface;
- a third lens having a concave object-side surface;
- a fourth lens having a concave object-side surface;
- and
- a fifth lens having a concave object-side surface and a concave image-side surface,
- wherein the first to fifth lenses are sequentially disposed in ascending numerical order from an object side of the optical imaging system toward an imaging plane.
An optical imaging system comprising:
- a first lens having a convex object-side surface and a concave image-side surface;
- a second lens having a concave image-side surface;
- a third lens having a concave object-side surface;
- a fourth lens having a concave object-side surface;
- and
- a fifth lens having a concave object-side surface and a concave image-side surface,
- wherein the first to fifth lenses are sequentially disposed in ascending numerical order from an object side of the optical imaging system toward an imaging plane, and
- 0.7<TTL/f<1.1 is satisfied, where TTL is a distance from the object-side surface of the first lens to the imaging plane, and f is an overall focal length of the optical imaging system.
An optical system comprising:
- a first lens;
- a second lens having a concave image-side surface;
- a third lens having a concave object-side surface and a convex image-side surface;
- a fourth lens having a concave object-side surface;
- and
- a fifth lens having a concave object-side surface and a concave image-side surface,
- wherein a sign of respective refractive powers of the first lens, the third lens, and the fourth lens is different from a sign of respective refractive powers of the second lens and the fifth lens, and
- the second lens, the third lens, and the fourth lens each have a refractive index greater than 1.60.
Dependencies are inferred from the claim text.