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; and
an image plane;
wherein the optical image capturing system consists of the five lenses with refractive power;
at least one lens among the first to the fifth lenses has positive refractive power;
the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces;
wherein the optical image capturing system satisfies;
1.2≦
f/HEP≦
6.0;
0.5≦
HOS/f≦
3.0;
0<
InTL/HOS<
0.9; and
1≦
2(ARE/HEP)≦
1.5;
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 in parallel with the optical axis from an object-side surface of the first lens to the image plane;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens;
for any surface of any lens, 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.
1 Assignment
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Accused Products
Abstract
An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens, wherein at least one lens among the first to the fifth lenses has positive refractive force and the fifth lens can have negative refractive force, and wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point such that the lenses in the optical image capturing system which have refractive power include the first to the fifth lenses, whereby the optical image capturing system can increase aperture value and improve the imaging 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; and an image plane; wherein the optical image capturing system consists of the five lenses with refractive power;
at least one lens among the first to the fifth lenses has positive refractive power;the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces; wherein the optical image capturing system satisfies;
1.2≦
f/HEP≦
6.0;
0.5≦
HOS/f≦
3.0;
0<
InTL/HOS<
0.9; and
1≦
2(ARE/HEP)≦
1.5;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 in parallel with the optical axis from an object-side surface of the first lens to the image plane;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens;
for any surface of any lens, 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 (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 positive 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; and an image plane; wherein the optical image capturing system consists of the five lenses with refractive power;
at least a surface of each of at least two lenses among the first to the five lenses has at least an inflection point;
at least one lens between the second and the five lenses has positive refractive power;
the five lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the five lens are aspheric surfaces;wherein the optical image capturing system satisfies;
1.2≦
f/HEP≦
6.0;
0.5≦
HOS/f≦
3.0;
0<
InTL/HOS<
0.9; and
1≦
2(ARE/HEP)≦
1.5;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 in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the third lens;
for any surface of any lens, 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 positive refractive power; a second lens having refractive power; a third lens having refractive power; a fourth lens having positive refractive power; a fifth lens having refractive power, wherein the fifth lens has at least an inflection point on at least one surface among an object-side surface, which faces the object side, and an image-side surface, which faces the image side, thereof; and an image plane; wherein the optical image capturing system consists of the five lenses having refractive power;
at least a surface of each of at least two lenses among the first lens to the fourth lens has at least an inflection point thereon;
both an object-side surface, which faces the object side, and an image-side surface, which faces the image side, of the fourth lens are aspheric surfaces;
both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces;wherein the optical image capturing system satisfies;
1.2≦
f/HEP≦
3.5;
0.4≦
|tan(HAF)|≦
1.5;
0.5≦
HOS/f≦
2.5;
0<
InTL/HOS<
0.9; and
1≦
2(ARE/HEP)≦
1.5;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 view angle of the optical image capturing system;
HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens;
for any surface of any lens, 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