Optical imaging system and portable electronic device including the same
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 plurality of lenses disposed along an optical axis, and a reflection member disposed to be closer to an object than all of the plurality of lenses and having a reflection surface configured to change a path of light. The plurality of lenses are spaced apart from each other by preset distances along the optical axis, and the condition 0.8<TTL/ft<1.1 is satisfied, where TTL is a distance from an object-side surface of a lens closest to the object among the plurality of lenses to an imaging plane of an image sensor, and ft is an overall focal length of an optical system including the plurality of lenses.
Claims17
An optical imaging system comprising:
- a first lens having a positive refractive power, a convex object-side surface in a paraxial region thereof, and a convex image-side surface in a paraxial region thereof;
- a second lens having a negative refractive power;
- a third lens having a positive refractive power;
- a fourth lens having a positive refractive power;
- and
- a fifth lens having a negative refractive power, a concave object-side surface in a paraxial region thereof, and a convex image-side surface in a paraxial region thereof,
- wherein the first to fifth lenses are sequentially arranged in ascending numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system to an imaging plane of the optical imaging system,
- the optical imaging system has a total of five lenses, and
- 0.8<TTL/ft<1.1 is satisfied, where TTL is a distance along the optical axis from the object-side surface of the first lens to the imaging plane, and ft is an overall focal length of the optical imaging system.
Dependencies are inferred from the claim text.