OPTICAL IMAGE CAPTURING SYSTEM
First Claim
1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
- a first lens having refractive power;
a second lens having refractive power;
a third lens having refractive power,a fourth lens having refractive power;
a fifth lens having refractive power;
a first image plane, which is an image plane specifically for visible light and located at a position of the optical axis with a through-focus modulation transfer rate (value of MTF) at a first spatial frequency having a maximum value; and
a second image plane, which is an image plane specifically for infrared light and located at a position of the optical axis with the through-focus modulation transfer rate (value of MTF) at the first spatial frequency having a maximum value;
wherein the optical image capturing system consists of the five lenses with refractive power, at least one lens among the first lens to the fifth lens is made of plastic;
at least one lens among the first lens to the fifth lens has positive refractive power;
each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
wherein the optical image capturing system satisfies;
1.0≤
f/HEP≤
10.0;
0 deg<
HAF≤
50 deg; and
|FS|≤
15 μ
m;
where f1, f2, f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOS is a distance between an object-side surface of the first lens and the first image plane on the optical axis;
HOI is a maximum image height on the first image plane perpendicular to the optical axis;
InTL is a distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens;
HAF is a half of a maximum view angle of the optical image capturing system;
for any surface of any lens;
FS is a distance on the optical axis between the first image plane and the second image plane.
1 Assignment
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Accused Products
Abstract
The invention discloses a five-piece optical lens for capturing image and a five-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with refractive power; a second lens with refractive power, a third lens with refractive power; a fourth lens with refractive power; a fifth lens with refractive power, and at least one of the image-side surface and object-side surface of each of the five lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.
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Citations
25 Claims
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1. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
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a first lens having refractive power; a second lens having refractive power; a third lens having refractive power, a fourth lens having refractive power; a fifth lens having refractive power; a first image plane, which is an image plane specifically for visible light and located at a position of the optical axis with a through-focus modulation transfer rate (value of MTF) at a first spatial frequency having a maximum value; and a second image plane, which is an image plane specifically for infrared light and located at a position of the optical axis with the through-focus modulation transfer rate (value of MTF) at the first spatial frequency having a maximum value; wherein the optical image capturing system consists of the five lenses with refractive power, at least one lens among the first lens to the fifth lens is made of plastic;
at least one lens among the first lens to the fifth lens has positive refractive power;
each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;wherein the optical image capturing system satisfies;
1.0≤
f/HEP≤
10.0;
0 deg<
HAF≤
50 deg; and
|FS|≤
15 μ
m;where f1, f2, f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOS is a distance between an object-side surface of the first lens and the first image plane on the optical axis;
HOI is a maximum image height on the first image plane perpendicular to the optical axis;
InTL is a distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens;
HAF is a half of a maximum view angle of the optical image capturing system;
for any surface of any lens;
FS is a distance on the optical axis between the first image plane and the second image plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
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a first lens having refractive power; a second lens having refractive power; a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power; a first image plane, which is an image plane specifically for visible light and located at a position of the optical axis;
a through-focus modulation transfer rate (value of MTF) at a first spatial frequency having a maximum value at central field of view of the first image plane, and the first spatial frequency being 110 cycles/mm; anda second image plane, which is an image plane specifically for infrared light and located at a position of the optical axis;
the through-focus modulation transfer rate (value of MTF) at the first spatial frequency having a maximum value at central of field of view of the second image plane, and the first spatial frequency being 110 cycles/mm;wherein the optical image capturing system consists of the five lenses with refractive power;
at least one lens among the first lens to the fifth lens has positive refractive power;each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side; wherein the optical image capturing system satisfies;
1.0≤
f/HEP≤
0.0;
0 deg<
HAF≤
50 deg;
|FS|≤
0 μ
m; and
0.9≤
2(ARE/HEP)≤
2.0;where f1, f2, f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOS is a distance between the object-side surface of the first lens and the first image plane on the optical axis;
InTL is a distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens;
HAF is a half of a maximum view angle of the optical image capturing system;
for any surface of any lens;
FS is a distance on the optical axis between the first image plane and the second image plane;
ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:
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a first lens having refractive power; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power; a fifth lens having refractive power; a first average image plane, which is an image plane specifically for visible light and perpendicular to the optical axis;
the first average image plane being installed at the average position of the defocusing positions, where through-focus modulation transfer rates (values of MTF) of the visible light at central field of view, 0.3 field of view, and 0.7 field of view are at their respective maximum at a first spatial frequency;
the first spatial frequency being 110 cycles/mm; anda second average image plane, which is an image plane specifically for infrared light and perpendicular to the optical axis;
the second average image plane being installed at the average position of the defocusing positions, where through-focus modulation transfer rates of the infrared light (values of MTF) at central field of view, 0.3 field of view, and 0.7 field of view are at their respective maximum at the first spatial frequency;the first spatial frequency being 110 cycles/mm; wherein the optical image capturing system consists of the five lenses having refractive power;
at least one lens among the first lens to the fifth lens has positive refractive power, each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;wherein the optical image capturing system satisfies;
1≤
f/HEP≤
10;
0 deg<
HAF≤
50 deg;
|AFS|≤
20 μ
m; and
0.9≤
2(ARE/HEP)≤
2.0;where f1, f2, f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HAF is a half of a maximum view angle of the optical image capturing system;
HOS is a distance between an object-side surface of the first lens and the image plane on the optical axis;
HOI is a maximum image height on the first image plane perpendicular to the optical axis;
InTL is a distance on the optical axis from the object-side surface of the first lens to the image-side surface of the fifth lens;
AFS is a distance on the optical axis between the first average image plane and the second average image plane;
ARE is a profile curve length measured from a start point where the optical axis passes therethrough, along a surface profile thereof, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification