CN204758908U - Big image planes optical lens of large aperture - Google Patents

Big image planes optical lens of large aperture Download PDF

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Publication number
CN204758908U
CN204758908U CN201520474509.XU CN201520474509U CN204758908U CN 204758908 U CN204758908 U CN 204758908U CN 201520474509 U CN201520474509 U CN 201520474509U CN 204758908 U CN204758908 U CN 204758908U
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lens
image planes
focal length
surface towards
hyperbolic curve
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CN201520474509.XU
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Chinese (zh)
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肖明志
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Union Optech Co Ltd
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Union Optech Co Ltd
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Abstract

The utility model discloses a big image planes optical lens of large aperture, including first lens, second lens, third lens, fourth lens, the 5th lens, VI lenses, the 7th lens and the 8th lens, wherein first lens, second lens, third lens, the 5th lens, VI lenses, the 7th lens and the 8th lens be the plastic lens, effectively alleviate whole camera lens weight, and the fourth lens be the glass lens, and the diaphragm establishes in the middle of third lens and fourth lens, and are feasible the utility model discloses the lens opening greatly to F1.2, the formation of image image planes greatly to 1 inch, satisfied simultaneously and can clearly shoot under the low light level environment to and photo high demand of making a video recording of its resolution ratio when enlargeing, the photo pixel of shooing reaches 2, 000 ten thousand - 4, 000 ten thousand, can be used to camera lens fields such as the cell -phone is made a video recording, surveillance camera.

Description

The large image planes optical lens in a kind of large aperture
[technical field]
The utility model relates to optical lens, the large image planes optical lens in especially a kind of large aperture.
[background technology]
At present, there are some defects in mobile phone and the monitoring camera camera lens of use, aperture and image planes too small, as aperture is generally F2.0, image planes are 1/3 inch, low-light (level) environment shooting time noise large, image planes are dark, the inadequate taxes and profits of image quality, thicken when causing photo to amplify.
The utility model is researched and proposed for the deficiencies in the prior art.
[utility model content]
The technical problems to be solved in the utility model is to provide the large image planes optical lens in a kind of large aperture, comprise the first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens and the 8th lens, wherein the first lens, second lens, 3rd lens, 5th lens, 6th lens, 7th lens and the 8th lens are plastic lens, effectively alleviate the nose heave amount of integral mirror, 4th lens are glass lens, and diaphragm is located in the middle of the 3rd lens and the 4th lens, make the utility model lens opening greatly to F1.2, imaging image planes greatly to 1 inch, meet simultaneously and can clearly take under low-light (level) environment, and the shooting demand that during photo amplification, its resolution is high, captured photograph pixel reaches 2,000 ten thousand-4,000 ten thousand, can be used for cell-phone camera, the camera lens fields such as monitoring camera.
For solving the problems of the technologies described above, the large image planes optical lens in a kind of large aperture of the utility model, from object plane to image planes, be provided with the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, optical filter and CMOS sensitive chip successively, between described 3rd lens and the 4th lens, be provided with diaphragm.
Described first lens are positive focal length plastic lens, and described first lens are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side.
Described second lens are negative focal length plastic lens, and described second lens are hyperbolic curve aspheric surface towards object plane one side, and are oval or hyperbolic curve aspheric surface towards image planes one side.
3rd lens are negative focal length plastic lens, and the 3rd lens are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side.
Described 4th lens are positive focal length glass lens, and described 4th lens are two-sided to be convex surface and to be hyperbolic curve aspheric surface.
Described 5th lens are negative focal length plastic lens, and described 5th lens are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side.
Described 6th lens are positive focal length plastic lens, and described 6th lens are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side.
Described 7th lens are negative focal length plastic lens and are two-sidedly hyperbolic curve aspheric surface.
Described 8th lens are negative focal length lens and are two-sidedly hyperbolic curve aspheric surface.
Described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, the focal length of the 7th lens and the 8th lens is f1, f2, f3, f4, f5, f6, f7 and f8, described first lens, the whole focal length of the second lens and the 3rd lens is f10, described 4th lens, 5th lens, 6th lens, the whole focal length of the 7th lens and the 8th lens is f20, described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, the system element characteristic of the 7th lens and the 8th lens meets :-5<f1/f2<0,-5<f4/f5<0, f10<0, f20>0.
The whole focal length of described first lens, the second lens and the 3rd lens is f10, the abbe number of described 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens is respectively vdlens1, vdlens2, vdlens3, vdlens4, vdlens5, vdlens6, vdlens7 and vdlens8, meet: 15< (vdlens2, vdlens3, vdlens5, vdlens8) <35,82> (vdlens1, vdlens4, vdlens6, vdlens7) >=37.
Described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens and the curvature corresponding to the 8th lens radius are c, described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens and the 8th lens radial coordinate are respectively y2, y4, y6, y8, y10, y12, y14 and y16, described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, the coefficient corresponding to radial coordinate of the 7th lens and the 8th lens is α 1, α 2, α 3, α 4, α 5, α 6, α 7 and α 8, described first lens, second lens, 3rd lens, 4th lens, 5th lens, 6th lens, 7th lens and the 8th lens aspherical surface shape meet: Z=cy2/{1+ [1-1+kc2y2] 1/2+ α 1y2+ α 2y4+ α 3y6+ α 4y8+ α 5y10+ α 6y12+ α 7y14+ α 8y16.
Described diaphragm is positioned at the 3rd lens and the 4th position, lens center.
Compared with prior art, the utility model tool has the following advantages:
1, overall even, the high brightness of the utility model image planes, f-number reaches F1.2.
2, the utility model image planes size is very large, reaches 1 inch or more.
3, because the 4th lens in the utility model are positive focal length glass lens, and be aspheric surface, therefore the Geometrical MTF of optical system is greatly improved, and can make the taxes and profits degree of this camera lens product, color reducibility is significantly improved.
4, diaphragm put between the 3rd lens and the 4th lens, the susceptibility of the utility model camera lens is reduced greatly, and chromatic longitudiinal aberration and distortion all improve obvious.
5, in the utility model, the first lens, the second lens, the 3rd lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens are plastic lens, effectively alleviate camera lens overall weight.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:
Fig. 1 is each lens arrangement schematic diagram of the utility model.
[embodiment]
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
The large image planes optical lens in a kind of large aperture of the utility model; the first lens 1, second lens 2, the 3rd lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7, the 8th lens 8, optical filter 9 and CMOS sensitive chip 10 is provided with successively from object plane to image planes; light enters from optical filter 9; optical filter 9 pairs of CMOS sensitive chips 10 have certain protective effect; also filter a part of light simultaneously; to reduce veiling glare and hot spot, make image color beautiful and sharp keen while there is good color reducibility.Diaphragm 11 is provided with between described 3rd lens 3 and the 4th lens 4, and during diaphragm 11 puts, the utility model lens system can be made for close to symmetrical structure, thus reduce the Aberration Problem such as distortion and chromatic longitudiinal aberration, effectively improve image quality, also reduce susceptibility and the manufacture difficulty of eyeglass simultaneously.
Described first lens 1 are positive focal length plastic lens, and described first lens 1 are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side.
Described second lens 2 are negative focal length plastic lens, and described second lens 2 are hyperbolic curve aspheric surface towards object plane one side, and are oval or hyperbolic curve aspheric surface towards image planes one side.
3rd lens 3 are negative focal length plastic lens, and the 3rd lens 3 are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side.
Described 4th lens 4 are positive focal length glass lens, and described 4th lens 4 are two-sided to be convex surface and to be hyperbolic curve aspheric surface.
Described 5th lens 5 are negative focal length plastic lens, and described 5th lens 5 are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side.
Described 6th lens 6 are positive focal length plastic lens, and described 6th lens 6 are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side.
Described 7th lens 7 are for negative focal length plastic lens and be two-sidedly hyperbolic curve aspheric surface.
Described 8th lens 8 are for negative focal length lens and be two-sidedly hyperbolic curve aspheric surface.
Described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, the focal length of the 7th lens 7 and the 8th lens 8 is f1, f2, f3, f4, f5, f6, f7 and f8, described first lens 1, the whole focal length of the second lens 2 and the 3rd lens 3 is f10, described 4th lens 4, 5th lens 5, 6th lens 6, the whole focal length of the 7th lens 7 and the 8th lens 8 is f20, described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, the system element characteristic of the 7th lens 7 and the 8th lens 8 meets :-5<f1/f2<0,-5<f4/f5<0, f10<0, f20>0, the Aberration Problem such as the spherical aberration that the large image planes in large aperture that this spline structure can solve utility model import and astigmatism.
The whole focal length of described first lens 1, second lens 2 and the 3rd lens 3 is f10, the abbe number of described 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 and the 8th lens 8 is respectively vdlens1, vdlens2, vdlens3, vdlens4, vdlens5, vdlens6, vdlens7 and vdlens8, meet: 15< (vdlens2, vdlens3, vdlens5, vdlens8) <35,82> (vdlens1, vdlens4, vdlens6, vdlens7) >=37.Adopt above-mentioned design, can resolution system axial chromatic aberration problems of too thus realize center high resolving power.
Described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, 7th lens 7 and the curvature corresponding to the 8th lens 8 radius are c, described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, 7th lens 7 and the 8th lens 8 radial coordinate are respectively y2, y4, y6, y8, y10, y12, y14 and y16, described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, the coefficient corresponding to radial coordinate of the 7th lens 7 and the 8th lens 8 is α 1, α 2, α 3, α 4, α 5, α 6, α 7 and α 8, described first lens 1, second lens 2, 3rd lens 3, 4th lens 4, 5th lens 5, 6th lens 6, 7th lens 7 and the 8th lens 8 aspherical surface shape meet: Z=cy2/{1+ [1-1+kc2y2] 1/2+ α 1y2+ α 2y4+ α 3y6+ α 4y8+ α 5y10+ α 6y12+ α 7y14+ α 8y16.
When k-factor is less than-1, the face shape curve of lens is hyperbolic curve; When k-factor equals-1, the face shape curve of lens is para-curve; When k-factor is between-1 to 0, the face shape curve of lens is oval; When k-factor equals 0, the face shape curve of lens is circular; When k-factor is greater than 0, the face shape curve of lens is oblate.

Claims (4)

1. the large image planes optical lens in large aperture, it is characterized in that from object plane to image planes, be provided with the first lens (1), the second lens (2), the 3rd lens (3), the 4th lens (4), the 5th lens (5), the 6th lens (6), the 7th lens (7), the 8th lens (8), optical filter (9) and CMOS sensitive chip (10) successively, between described 3rd lens (3) and the 4th lens (4), be provided with diaphragm (11);
Described first lens (1) are positive focal length plastic lens, and described first lens (1) are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side;
Described second lens (2) are negative focal length plastic lens, and described second lens (2) are hyperbolic curve aspheric surface towards object plane one side, and are oval or hyperbolic curve aspheric surface towards image planes one side;
3rd lens (3) are negative focal length plastic lens, and the 3rd lens (3) are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side;
Described 4th lens (4) are positive focal length glass lens, and described 4th lens (4) are two-sided to be convex surface and to be hyperbolic curve aspheric surface;
Described 5th lens (5) are negative focal length plastic lens, and described 5th lens (5) are two-sided is hyperbolic curve aspheric surface, and are convex surface towards object plane one side, are concave surface towards image planes one side;
Described 6th lens (6) are positive focal length plastic lens, and described 6th lens (6) are two-sided is hyperbolic curve aspheric surface, and are concave surface towards object plane one side, are convex surface towards image planes one side;
Described 7th lens (7) are for negative focal length plastic lens and be two-sidedly hyperbolic curve aspheric surface;
Described 8th lens (8) are for negative focal length lens and be two-sidedly hyperbolic curve aspheric surface.
2. the large image planes optical lens in a kind of large aperture according to claim 1, is characterized in that described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), the focal length of the 7th lens (7) and the 8th lens (8) is f1, f2, f3, f4, f5, f6, f7 and f8, described first lens (1), the whole focal length of the second lens (2) and the 3rd lens (3) is f10, described 4th lens (4), 5th lens (5), 6th lens (6), the whole focal length of the 7th lens (7) and the 8th lens (8) is f20, described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), the system element characteristic of the 7th lens (7) and the 8th lens (8) meets :-5<f1/f2<0,-5<f4/f5<0, f10<0, f20>0,
Described first lens (1), the whole focal length of the second lens (2) and the 3rd lens (3) is f10, described 4th lens (4), 5th lens (5), 6th lens (6), the abbe number of the 7th lens (7) and the 8th lens (8) is respectively vdlens1, vdlens2, vdlens3, vdlens4, vdlens5, vdlens6, vdlens7 and vdlens8, meet: 15< (vdlens2, vdlens3, vdlens5, vdlens8) <35, 82> (vdlens1, vdlens4, vdlens6, vdlens7) >=37.
3. the large image planes optical lens in a kind of large aperture according to claim 1 or 2, is characterized in that described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), 7th lens (7) and the curvature corresponding to the 8th lens (8) radius are c, described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), 7th lens (7) and the 8th lens (8) radial coordinate are respectively y2, y4, y6, y8, y10, y12, y14 and y16, described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), the coefficient corresponding to radial coordinate of the 7th lens (7) and the 8th lens (8) is α 1, α 2, α 3, α 4, α 5, α 6, α 7 and α 8, described first lens (1), second lens (2), 3rd lens (3), 4th lens (4), 5th lens (5), 6th lens (6), 7th lens (7) and the 8th lens (8) aspherical surface shape meet: Z=cy2/{1+ [1-(1+k) c2y2] 1/2+ α 1y2+ α 2y4+ α 3y6+ α 4y8+ α 5y10+ α 6y12+ α 7y14+ α 8y16.
4. the large image planes optical lens in a kind of large aperture according to claim 3, is characterized in that described diaphragm (11) is positioned at the 3rd lens (3) and the 4th lens (4) center.
CN201520474509.XU 2015-06-30 2015-06-30 Big image planes optical lens of large aperture Active CN204758908U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110119019A (en) * 2015-12-15 2019-08-13 大立光电股份有限公司 Optical shot for image capture group, image-taking device and electronic device
CN112882197A (en) * 2016-12-28 2021-06-01 三星电机株式会社 Optical imaging system
CN113156623A (en) * 2017-08-18 2021-07-23 大立光电股份有限公司 Image capturing optical system set

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110119019A (en) * 2015-12-15 2019-08-13 大立光电股份有限公司 Optical shot for image capture group, image-taking device and electronic device
CN110119019B (en) * 2015-12-15 2021-06-11 大立光电股份有限公司 Image capturing optical lens assembly, image capturing device and electronic device
CN112882197A (en) * 2016-12-28 2021-06-01 三星电机株式会社 Optical imaging system
CN113156623A (en) * 2017-08-18 2021-07-23 大立光电股份有限公司 Image capturing optical system set

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