Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsPhil Ho Jung, In Gun Kim, Yong Joo Jo, Ga Young An
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, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system; and a spacer disposed between the sixth and seventh lenses, wherein the optical imaging system satisfies 0.5<S6d/f<1.4, where S6d is an inner diameter of the spacer, f is an overall focal length of the optical imaging system, and S6d and f are expressed in a same unit of measurement.
Claims16
An optical imaging system comprising:
- a first lens having positive refractive power, a convex object-side surface, and a concave image-side surface;
- a second lens having negative refractive power, a convex object-side surface, and a concave image-side surface;
- a third lens having positive refractive power;
- a fourth lens having negative refractive power, a convex object-side surface, and a concave image-side surface;
- 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 in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
- wherein the optical imaging system has a total of seven lenses, and
- wherein the optical imaging system satisfies 0.6<TTL/(2*Img HT)<0.9, where TTL is a distance along the optical axis from the object-side surface of the first lens to the imaging plane of the image sensor, and Img HT is one-half of a diagonal length of the imaging plane of the image sensor.
Dependencies are inferred from the claim text.