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US 11,029,490 B2Granted
Optical imaging system
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsTae Youn Lee, Yong Joo Jo
Life of this patent
Estimating the term…
Abstract
An optical imaging system includes lenses sequentially disposed from an object side of the optical imaging system toward an imaging plane of the optical imaging system, and a stop disposed between a third lens of the lenses and a fourth lens of the lenses. An object-side surface of the third lens is concave, and a ratio TL/f of a distance TL from an object-side surface of a first lens of the lenses to the imaging plane with respect to an overall focal length f of the optical imaging system is greater than 0.7 and less than 1.0.
Claims10
An optical imaging system comprising:
- a first lens having a refractive power;
- a second lens having a negative refractive power;
- a third lens having a negative refractive power;
- a fourth lens having a refractive power;
- a fifth lens having a refractive power;
- and
- a sixth lens having a refractive power,
- wherein the first to sixth lenses are sequentially disposed in ascending numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system,
- the first to sixth lenses are the only lenses having a refractive power in the optical imaging system, and
- the optical imaging system satisfies the following conditional expressions:
- 0.7<TL/f<1.0
- 0.1<d45/TL<0.32
- where TL is a distance from an object-side surface of the first lens to the imaging plane, f is an overall focal length of the optical imaging system, and d45 is a distance from an image-side surface of the fourth lens to an object-side surface of the fifth lens.
10 more elements
Dependencies are inferred from the claim text.