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US 11,899,177 B2Granted
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorJung Hui Ko
Life of this patent
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Abstract
An optical imaging system includes a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens having a negative refractive power, and a fifth lens having a positive refractive power. The first to fifth lenses are sequentially disposed from an object side to an imaging plane. One or more lenses among the first to fifth lenses are formed using a glass material.
Claims20
An optical imaging system, comprising:
- a first lens comprising a positive refractive power;
- a second lens comprising a negative refractive power;
- a third lens comprising a negative refractive power;
- a fourth lens comprising a negative refractive power and a concave object-side surface in a paraxial region;
- and
- a fifth lens comprising a positive refractive power,
- wherein the first to fifth lenses are sequentially disposed from an object side to an imaging plane,
- wherein one or more lenses among the first to fifth lenses are formed using a glass material,
- wherein a thickness along an optical axis of the second lens is greater than a thickness along an optical axis of the third lens,
- wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens and a radius of curvature of an image-side surface of the third lens, and
- wherein a radius of curvature of an image-side surface of the fourth lens is greater than a radius of curvature of an object-side surface of the fourth lens.
8 more elements
An optical imaging system, comprising:
- a first lens having a refractive power, a second lens having a refractive power, a third lens having a refractive power, a fourth lens having a concave object-side surface in a paraxial region, and a fifth lens having a refractive power, sequentially disposed from an object side to an imaging plane,
- wherein a thickness along an optical axis of the second lens is greater than a thickness along an optical axis of the third lens,
- wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens and a radius of curvature of an image-side surface of the third lens,
- wherein a radius of curvature of an image-side surface of the fourth lens is greater than a radius of curvature of an object-side surface of the fourth lens, and
- wherein a radius of curvature of an image-side surface of the fifth lens is less than the radius of curvature of the image-side surface of the first lens or the radius of curvature of the object-side surface of the fourth lens.
2 more elements
An optical imaging system, comprising:
- a first lens, a second lens, a third lens, a fourth lens having a concave object-side surface in a paraxial region, and a fifth lens having a convex image-side surface in a paraxial region,
- wherein the first to fifth lenses are sequentially disposed from an object side to an imaging plane,
- wherein at least one of the first to fifth lenses are aspheric and formed using a glass material,
- wherein the first lens comprises a greatest Abbe number in the optical imaging system,
- wherein the third lens comprises a greatest refractive index in the optical imaging system,
- wherein a thickness along an optical axis of the second lens is greater than a thickness along an optical axis of the third lens,
- wherein a radius of curvature of an object-side surface of the second lens is greater than a radius of curvature of an image-side surface of the first lens and a radius of curvature of an image-side surface of the third lens, and
- wherein a radius of curvature of an image-side surface of the fourth lens is greater than a radius of curvature of an object-side surface of the fourth lens.
5 more elements
Dependencies are inferred from the claim text.