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Optical Image Capturing System
| Content Provider | The Lens |
|---|---|
| Abstract | An optical image capturing system, sequentially including a first lens element, a second lens element, a third lens element and a fourth lens element from an object side to an image side, is disclosed. The first lens element has negative refractive power. The second through third lens elements have refractive power. The fourth lens element has positive refractive power. At least one of the image side surface and the object side surface of each of the four lens elements are aspheric. The optical lens elements can increase aperture value and improve the imagining quality for use in compact cameras. |
| Related Links | https://www.lens.org/lens/patent/012-269-876-725-733/frontpage |
| Language | English |
| Publisher Date | 2019-05-14 |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |
| Jurisdiction | United States of America |
| Date Applied | 2015-12-28 |
| Agent | Muncy, Geissler, Olds & Lowe, P.c. |
| Applicant | Ability Opto Electronics Technology Co Ltd |
| Application No. | 201514980213 |
| Claim | An optical image capturing system, from an object side to an image side, comprising: a first lens element with a negative refractive power; a second lens element with a positive refractive power; a third lens element with a negative refractive power; a fourth lens element with a positive refractive power; and an image plane; wherein the optical image capturing system comprises only the four lens elements with refractive powers, an object-side surface and an image-side surface of the fourth lens element are aspheric, focal lengths of the first through fourth lens elements are f1, f2, f3 and f4 respectively, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, a distance on an optical axis from an object-side surface of the first lens element to the image plane is HOS, a distance on an optical axis from the object-side surface of the first lens element to the image-side surface of the fourth lens element is InTL, a length of outline curve from an axial point on any surface of any one of the four lens elements to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE, and the following relations are satisfied: 1.2≤f/HEP≤6.0, 0.5≤HOS/f≤20, 0 The optical image capturing system of claim 1 , wherein the following relation is satisfied: 0 mm The optical image capturing system of claim 1 , wherein a length of outline curve from an axial point on the object-side surface of the first lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE11; a length of outline curve from an axial point on the image-side surface of the first lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE12, and a thickness of the first lens element on the optical axis is TP1, and the following relations are satisfied: 0.5≤ARE11/TP1≤20 and 0.5≤ARE12/TP1≤20. The optical image capturing system of claim 1 , further comprising an aperture stop, wherein a distance from the aperture stop to the image plane on the optical axis is InS, a height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is HOI and the following relation is satisfied: 0.2≤InS/HOS≤1.1 and 0.5 The optical image capturing system of claim 8 , wherein at least one surface among the object-side surface and the image-side surface of the fourth lens element has at least one inflection point. The optical image capturing system of claim 8 , wherein a visible spectrum has a height for image formation on the image plane perpendicular to the optical axis that is denoted by HOI, a relative illumination of the height for image formation of the optical image capturing system is denoted by RI, a lateral aberration of the longest operation wavelength of a positive direction tangential fan of the optical image capturing system passing through an edge of the entrance pupil and incident on the image plane by 0.7 HOT is denoted as PLTA, and a lateral aberration of the shortest operation wavelength of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as PSTA, a lateral aberration of the longest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NLTA, a lateral aberration of the shortest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NSTA, a lateral aberration of the longest operation wavelength of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SLTA, a lateral aberration of the shortest operation wavelength of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SSTA, and the following relations are satisfied: PLTA≤50 μm, PSTA≤50 μm, NLTA≤50 μm, NSTA≤50 μm, SLTA≤50 μm, SSTA≤50 μm, and 20≤RI<100%. The optical image capturing system of claim 8 , wherein a distance between the first lens element and the second lens element on the optical axis is IN12, and the following relation is satisfied: 0 The optical image capturing system of claim 8 , wherein the distance from the first lens element to the second lens element on the optical axis is IN12, a thickness of the first lens element and a thickness of the second lens element on the optical axis respectively are TP1 and TP2, and the following relation is satisfied: 1≤(TP1+IN12)/TP2≤20. The optical image capturing system of claim 8 , wherein a distance from the second lens element to the third lens element on the optical axis is IN23, a distance from the third lens element to the fourth lens element on the optical axis is IN34, a thickness of the third lens element on the optical axis is TP3, and the following relation is satisfied: 0 The optical image capturing system of claim 18 , wherein a height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is HOI and the following relation is satisfied: 0.5 The optical image capturing system of claim 20 , wherein a length of outline curve from an axial point on the object-side surface of the first lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE11; a length of outline curve from an axial point on the image-side surface of the first lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE12, and a thickness of the first lens element on the optical axis is TP1, and the following relations are satisfied: 0.5≤ARE11/TP1≤20 and 0.5≤ARE12/TP1≤20. The optical image capturing system of claim 20 , further comprising an aperture stop, an image sensing device and a driving module, the image sensing device is disposed on the image plane and with at least one hundred thousand pixels, a distance from the aperture stop to the image plane on the optical axis is InS, the driving module and the four lens elements may couple to each other and shifts are produced for the four lens elements, and the following relation is satisfied: 0.2≤InS/HOS≤1.1. |
| CPC Classification | OPTICAL ELEMENTS; SYSTEMS OR APPARATUS |
| Examiner | Jie Lei |
| Extended Family | 139-761-655-409-446 134-624-431-281-057 142-489-061-615-873 012-269-876-725-733 150-426-793-720-355 090-709-806-472-22X |
| Patent ID | 10288841 |
| Inventor/Author | Liu Yao-wei Chang Yeong-ming |
| IPC | G02B13/00 G02B27/00 H04N5/225 |
| Status | Active |
| Owner | Ability Opto-electronics Technology Co.ltd |
| Simple Family | 139-761-655-409-446 134-624-431-281-057 142-489-061-615-873 012-269-876-725-733 150-426-793-720-355 090-709-806-472-22X |
| CPC (with Group) | G02B13/004 G02B13/06 G02B13/18 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent/New European patent specification (amended specification after opposition procedure) |
