Lens module
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorYong Joo Jo
Life of this patent
Estimating the term…
Abstract
There is provided a lens module including: a first lens of which both surfaces are convex; a second lens having a meniscus shape concave toward an image; a third lens having a shape convex toward the image; a fourth lens having a meniscus shape convex toward the image; a fifth lens having a meniscus shape concave toward the image; and a stop disposed in front of an object side of the first lens, wherein when SD is a diameter of the stop and f is an overall focal length of the lens module, SD/f<0.45 is satisfied.
Claims22
A lens module comprising in order from an object side to an image side:
- a first lens of which both surfaces are convex;
- a second lens having a meniscus shape concave toward an image;
- a third lens having a shape convex toward the image;
- a fourth lens having a meniscus shape convex toward the image;
- a fifth lens having negative refractive power and having a meniscus shape concave toward the image;
- and
- a stop disposed in front of the first lens on an object side,
- wherein the lens module satisfies Conditional Expressions 1 and 7:
- SD/f<0.45 [Conditional Expression 1]
- SA<36 [Conditional Expression 7]
- where SD is a diameter [mm] of the stop, f is an overall focal length [mm] of the lens module, and SA is a sweep angle in degrees at a distal end of an effective diameter of an image-side surface of the fifth lens.
A lens module comprising in order, from an object side to an image side:
- a first lens having positive refractive power, both surfaces thereof being convex;
- a second lens having negative refractive power and having a meniscus shape concave toward an image;
- a third lens having positive refractive power, both surfaces thereof being convex;
- a fourth lens having negative refractive power and having a meniscus shape convex toward the image;
- a fifth lens having negative refractive power and having a meniscus shape concave toward the image;
- and
- a stop disposed between the first lens and the second lens,
- wherein the lens module satisfies Conditional Expression 1:
- SD/f<0.45 [Conditional Expression 1]
- where SD is a diameter [mm] of the stop, and f is an overall focal length [mm] of the lens module.
A lens module comprising, in order, from an object side to an image side:
- a first lens having positive refractive power, both surfaces thereof being convex;
- a second lens having negative refractive power and having a meniscus shape concave toward an image;
- a third lens having positive refractive power and having a shape convex toward the image;
- a fourth lens having negative refractive power and having a meniscus shape convex toward the image;
- a fifth lens having negative refractive power and having a meniscus shape concave toward the image;
- and
- a stop disposed between the first lens and the second lens,
- wherein the lens module satisfies Conditional Expressions 1 and 7:
- SD/f<0.45 [Conditional Expression 1]
- SA<36 [Conditional Expression 7]
- where SD is a diameter [mm] of the stop, f is an overall focal length [mm] of the lens module, and SA is a sweep angle in degrees at a distal end of an effective diameter of an image-side surface of the fifth lens.
Dependencies are inferred from the claim text.