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US 10,649,176 B2Granted
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorHo Sik Yoo
Life of this patent
Estimating the term…
Abstract
An optical imaging system includes: a plurality of lenses disposed along an optical axis; and a reflection member closer to an object than the plurality of lenses, and including a reflection surface configured to change a path of light; wherein the plurality of lenses are spaced apart from each other by preset distances along the optical axis; and the condition 0.9<DF/DC<1.3 is satisfied, where DF is an effective aperture radius of an image-side surface of a lens closest to an image sensor among the plurality of lenses, and DC is an effective aperture radius of an object-side surface of a lens closest to the reflection member among the plurality of lenses.
Claims20
An optical imaging system comprising:
- a plurality of lenses disposed along an optical axis, the plurality of lenses comprising 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, and a fifth lens, the first, second, third, fourth, and fifth lenses being sequentially disposed in numerical order beginning with the first lens from an object side of an optical system comprising the first, second, third, fourth, and fifth lenses to an image side of the optical system;
- and
- a reflection member disposed closer to an object than the plurality of lenses, and comprising a reflection surface configured to change a path of light;
- wherein the plurality of lenses are spaced apart from each other along the optical axis;
- and
- the condition 0.9<DF/DC<1.3 is satisfied, where DF is an effective aperture radius of an image-side surface of a lens closest to an image sensor among the plurality of lenses, and DC is an effective aperture radius of an object-side surface of a lens closest to the reflection member among the plurality of lenses.
3 more elements
An optical imaging system comprising:
- a plurality of lenses disposed along an optical axis, the plurality of lenses comprising 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, and a fifth lens, the first, second, third, fourth, and fifth lenses being sequentially disposed in numerical order beginning with the first lens from an object side of an optical system comprising the first, second, third, fourth, and fifth lenses to an image side of the optical system;
- and
- a reflection member disposed closer to an object than the plurality of lenses, and comprising a reflection surface configured to change a path of light;
- wherein the plurality of lenses are spaced apart from each other along the optical axis;
- an object-side surface and an image-side surface of each of the plurality of lenses are aspherical;
- and
- the condition 0.9<DF/DC<1.3 is satisfied, where DF is an effective aperture radius of an image-side surface of a lens closest to an image sensor among the plurality of lenses, and DC is an effective aperture radius of an object-side surface of a lens closest to the reflection member among the plurality of lenses.
4 more elements
An optical imaging system comprising:
- a reflection surface configured to reflect light from an object;
- and
- an optical system configured to receive the light from the object reflected by the reflection surface and focus an image of the object onto an imaging plane of an image sensor;
- wherein the optical system comprises a plurality of lenses disposed along an optical axis, the plurality of lenses comprising a first lens closest to the reflection surface 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 positive refractive power or a negative refractive power, and a fifth lens closest to the imaging plane of the image sensor having a positive refractive power, wherein the first, second, third, fourth, and fifth lenses are sequentially disposed in numerical order from the first lens to the fifth lens;
- and
- the following conditions are satisfied:
- 1.3<TTL/BFL<3.5
- 0.8<TTL/f<1.5
- where TTL is a distance from an object-side surface of a lens closest to the reflection surface among the plurality of lenses to the imaging plane of the image sensor,
- BFL is a distance from an image-side surface of a lens closest to the imaging plane of the image sensor among the plurality of lenses to the imaging plane of the image sensor, and
- f is an overall focal length of the optical system.
8 more elements
Dependencies are inferred from the claim text.