# US 2014/0153117 A1 · Photographing lens and electronic apparatus

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0153117 A1
- Document ID: US20140153117A1
- Status: Published application
- Kind: A1
- Application number: 14/096,258
- Filed: 2013-12-04
- Published: 2014-06-05
- Earliest claimed: 2012-12-04
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Hiroyuki Hagiwara
- Web page: https://patentgrep.com/patent/US20140153117A1

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/62: having six components only
- G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Provided are photographing lenses and an electronic apparatus. The photographing lenses include a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens; a fourth lens, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The first to sixth lenses are sequentially arranged from an object side to an image side, and an image-side surface of the sixth lens is concave toward the image side in a region around an optical axis.

## Claims

### Claim 1

Photographing lenses comprising:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens;
a fourth lens;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power,
wherein the first to sixth lenses are sequentially arranged from an object side to an image side, an image-side surface of the sixth lens is concave toward the image side in a region around an optical axis, and the photographing lenses satisfy the following formula:
<Formula>
−1.0<r42/f,
where r42 denotes a paraxial radius of curvature of an image-side surface of the fourth lens, and f denotes a focal length of the photographing lenses.

### Claim 2 (depends on 1)

The photographing lenses of claim 1, wherein the sixth lens has at least one inflection point at a position that does not intersect the optical axis.

### Claim 3 (depends on 1)

The photographing lenses of claim 1, wherein the first lens has an object-side surface convex toward the object side, and the second lens has an image-side surface concave toward the image side.

### Claim 4 (depends on 1)

The photographing lenses of claim 1, wherein the photographing lenses satisfy the following formula:
<Formula>
20<v1−v2<70,
where v1 denotes an Abbe number of the first lens, and v2 denotes an Abbe number of the second lens.

### Claim 5 (depends on 1)

The photographing lenses of claim 1, wherein an image-side surface of the third lens has a concave meniscus shape toward the image side in a region around the optical axis.

### Claim 6 (depends on 5)

The photographing lenses of claim 5, wherein the third lens has a positive refractive power.

### Claim 7 (depends on 5)

The photographing lenses of claim 5, wherein the photographing lenses satisfy the following formulas:
<Formulas>
−3.5<f2/f<−0.5,
1.0<f3/f<30.0,
where f2 denotes a focal length of the second lens, f3 denotes a focal length of the third lens, and f denotes the focal length of the photographing lenses.

### Claim 8 (depends on 1)

The photographing lenses of claim 1, wherein the image-side surface of the fourth lens is concave toward the image side in a region around the optical axis, and the fourth lens has at least one inflection point at a position that does not intersect the optical axis.

### Claim 9 (depends on 8)

The photographing lenses of claim 8, wherein the fourth lens has a positive refractive power.

### Claim 10 (depends on 8)

The photographing lenses of claim 8, wherein the photographing lenses satisfy the following formulas:
<Formulas>
0.4<f1/f<1.5,
1.0<f4/f,
where f1 denotes a focal length of the first lens, f4 denotes a focal length of the fourth lens, and f denotes the focal length of the photographing lenses.

### Claim 11 (depends on 1)

The photographing lenses of claim 1, wherein the sixth lens has a positive concave shape in a region around the optical axis.

### Claim 12 (depends on 11)

The photographing lenses of claim 11, wherein the photographing lenses satisfy the following formulas:
<Formula>
0.2<f5/f<1.5,
−1.5<f6/f<−0.1,
where f5 denotes a focal length of the fifth lens, f6 denotes a focal length of the sixth lens, and f denotes the focal length of the photographing lenses.

### Claim 13 (depends on 1)

The photographing lenses of claim 1, wherein the photographing lenses satisfy the following formula:
<Formula>
−2.0<(r11+r12)/(r11−r12)<−0.1,
where r11 denotes a paraxial radius of curvature of an object-side surface of the first lens, and r12 denotes a paraxial radius of curvature of an image-side surface of the first lens.

### Claim 14 (depends on 1)

The photographing lenses of claim 1, wherein the first to sixth lenses are formed of a plastic material.

### Claim 15 (depends on 1)

The photographing lenses of claim 1, wherein the photographing lenses satisfy the following formulas:
<Formula>
r11<|r12|,
|r52|<|r42|,
where r11 denotes a paraxial radius of curvature of an object-side surface of the first lens, r12 denotes a paraxial radius of curvature of an image-side surface of the first lens, r42 denotes the paraxial radius of curvature of the image-side surface of the fourth lens, and r52 denotes a paraxial radius of curvature of an image-side surface of the fifth lens.

### Claim 16

Photographing lenses comprising:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens;
a fourth lens;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power,
wherein the first to sixth lenses are sequentially arranged from an object side to an image side, an image-side surface of the sixth lens is concave toward the image side in a region around an optical axis, and the photographing lenses satisfy the following formulas:
<Formula>
r11<|r12|,
|r52|<|r42|,
where r11 denotes a paraxial radius of curvature of an object-side surface of the first lens, r12 denotes a paraxial radius of curvature of an image-side surface of the first lens, r42 denotes a paraxial radius of curvature of an image-side surface of the fourth lens, and r52 denotes a paraxial radius of curvature of an image-side surface of the fifth lens.

### Claim 17 (depends on 16)

The photographing lenses of claim 16, wherein the sixth lens has at least one inflection point at a position that does not intersect the optical axis.

### Claim 18 (depends on 16)

The photographing lenses of claim 16, wherein the object-side surface of the first lens is convex toward the object side, and an image-side surface of the second lens is concave toward the image side.

### Claim 19

Photographing lenses comprising:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens;
a fourth lens;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power,
wherein the first to sixth lenses are sequentially arranged from an object side to an image side, an image-side surface of the fourth lens is concave toward the image side in a region around an optical axis, and an image-side surface of the sixth lens is concave toward the image side in a region around the optical axis.

### Claim 20 (depends on 19)

The photographing lenses of claim 19, wherein the sixth lens has at least one inflection point at a position that does not intersect the optical axis.