Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsByung Hyun KIM, Phil Ho JUNG, Yong Joo JO
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Abstract
An optical imaging system according to an embodiment of the present disclosure includes a first lens, a second lens, and a third lens, sequentially arranged from an object side. In the optical imaging system according to the present embodiment, an air gap between the first lens and the second lens is greater than an air gap between the second lens and the third lens. In addition, in the optical imaging system according to the present embodiment, the first lens is formed of a glass material, and a length of the first lens in a first direction, intersecting an optical axis, is different from a length of the first lens in a second direction intersecting the optical axis.
Claims8
An optical imaging system comprising:
- a first lens, a second lens, a third lens, and a fourth lens sequentially arranged from an object side,
- wherein the first lens has positive refractive power,
- wherein the second lens has a concave image-side surface,
- wherein the fourth lens has positive refractive power,
- wherein the optical imaging system has a total of fourth or five lenses with refractive power,
- wherein an absolute value of a radius of curvature of an image-side surface of the first lens is greater than an absolute value of a radius of curvature of an object-side surface of the first lens, and
- wherein 8.0 mm<f1<16 mm, where f1 is a focal length of the first lens.
An optical imaging system comprising:
- a first lens, a second lens, a third lens, and a fourth lens sequentially arranged from an object side,
- wherein the first lens has positive refractive power,
- wherein the second lens has a concave image-side surface,
- wherein the fourth lens has positive refractive power,
- wherein the optical imaging system has a total of fourth or five lenses with refractive power,
- wherein an absolute value of a radius of curvature of an image-side surface of the first lens is greater than an absolute value of a radius of curvature of an object-side surface of the first lens, and
- wherein 8.0 mm<BFL<18 mm, where BFL is a distance from an image-side surface of a lens closest to an imaging plane to the imagine plane.
Dependencies are inferred from the claim text.