CN109283659B - Image capturing lens system and image capturing device - Google Patents

Image capturing lens system and image capturing device Download PDF

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CN109283659B
CN109283659B CN201811195763.0A CN201811195763A CN109283659B CN 109283659 B CN109283659 B CN 109283659B CN 201811195763 A CN201811195763 A CN 201811195763A CN 109283659 B CN109283659 B CN 109283659B
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lens element
lens
image
image capturing
refractive power
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CN109283659A (en
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陈俊谚
黄歆璇
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Largan Precision Co Ltd
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Largan Precision Co Ltd
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Abstract

The invention provides an image taking lens system and an image taking device, wherein the image taking lens system sequentially comprises the following components from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power; a third lens; a fourth lens; a fifth lens element with positive refractive power having an object-side surface and an image-side surface, at least one of which is aspheric; and a sixth lens element having a concave object-side surface and at least one of an object-side surface and an image-side surface being aspheric; the total number of the lenses of the image capturing lens system is six, and at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens comprises at least one inflection point.

Description

Image capturing lens system and image capturing device
The invention is a divisional application of invention patents with the application date of 2015, 07, 03 and the application number of 201510383604.3, named as image capturing lens system, image capturing device and electronic device.
Technical Field
The present invention relates to an image capturing lens system and an image capturing device, and more particularly, to an image capturing lens system and an image capturing device applicable to an electronic device.
Background
As personal electronic products become thinner, the size of each component inside the electronic product is required to be smaller. The size of the image capturing lens system is required to be miniaturized in the market trend. In addition to the requirement of miniaturization, the imaging lens is gradually developed to the high pixel field due to the reduction of the pixel area of the photosensitive element caused by the progress of the semiconductor process technology. Meanwhile, the emerging electronic devices such as smart phones and tablet computers also increase the demand of high-quality micro image capturing lens systems.
At present, the lens configured in the portable electronic product in the market mostly pursues the effect of shooting at a close object distance and a wide viewing angle, but the optical design of the lens cannot meet the requirement of shooting a remote fine image. The conventional optical system for long-range photography (Telephoto) mostly adopts a multi-piece structure and carries a spherical glass lens, and such configuration not only causes the lens to have too large volume and is difficult to carry, but also causes consumers to look away at the lens because of too high unit price of the product, so that the conventional optical system cannot meet the requirement of pursuing convenience and multifunctionality of common consumers at present.
In view of the foregoing, there is a need in the art for an image capturing lens system that satisfies the miniaturization requirement and high imaging quality.
Disclosure of Invention
The present invention provides an image capturing lens system and an image capturing device, which are used to meet the miniaturization requirement and improve the imaging quality.
The invention provides an image capturing lens system, sequentially comprising from an object side to an image side: the first lens element with positive refractive power has a convex object-side surface, the second lens element with negative refractive power has a positive refractive power, the fifth lens element with positive refractive power has an aspheric object-side surface and image-side surface, the sixth lens element with a concave object-side surface has an aspheric object-side surface and image-side surface; the total number of the lenses of the image capturing lens system is six, and at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens comprises at least one inflection point; wherein, an axial distance between the fifth lens element and the sixth lens element is T56, a sum of axial distances between all two adjacent lens elements in the image capturing lens system is Σ AT, a focal length of the image capturing lens system is f, a curvature radius of an object-side surface of the first lens element is R1, an axial distance between an image-side surface of the sixth lens element and an image plane is BL, an axial distance between an object-side surface of the first lens element and an image-side surface of the sixth lens element is TD, an axial thickness of the fourth lens element is CT4, an axial thickness of the fifth lens element is CT5, a maximum refractive index among refractive indices of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element is Nmax, and satisfies the following relationships:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0<BL/TD<0.70;
CT4/CT5< 3.0; and
Nmax<1.70。
the invention further provides an image capturing device, which comprises the image capturing lens system and an electronic photosensitive element.
The present invention further provides an image capturing lens system, sequentially comprising: the first lens element with positive refractive power has a convex object-side surface, the second lens element with negative refractive power has a positive refractive power, the fifth lens element with positive refractive power has an aspheric object-side surface and image-side surface, the sixth lens element with a concave object-side surface and at least one of the object-side surface and the image-side surface is aspheric; the total number of the lenses of the image capturing lens system is six, and at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens comprises at least one inflection point; the distance between the fifth lens element and the sixth lens element on the optical axis is T56, the sum of the distances between all two adjacent lens elements in the image capturing lens system on the optical axis is Σ AT, the focal length of the image capturing lens system is f, the radius of curvature of the object-side surface of the first lens element is R1, the distance between the image-side surface of the sixth lens element and the image plane on the optical axis is BL, the distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element on the optical axis is TD, the thickness of the fourth lens element on the optical axis is CT4, and the thickness of the fifth lens element on the optical axis is CT5, which satisfy the following relations:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0< BL/TD < 0.30; and
CT4/CT5<3.0。
the invention further provides an image capturing device, which comprises the image capturing lens system and an electronic photosensitive element.
The present invention further provides an image capturing lens system, sequentially comprising: the first lens element with positive refractive power has a convex object-side surface, the second lens element with negative refractive power has a positive refractive power, the fifth lens element with positive refractive power has an aspheric object-side surface and image-side surface, the sixth lens element with a concave object-side surface and at least one of the object-side surface and the image-side surface is aspheric; the total number of the lenses of the image capturing lens system is six, and the sixth lens comprises at least one inflection point; the distance between the fifth lens element and the sixth lens element on the optical axis is T56, the sum of the distances between all two adjacent lens elements in the image capturing lens system on the optical axis is Σ AT, the focal length of the image capturing lens system is f, the radius of curvature of the object-side surface of the first lens element is R1, the distance between the image-side surface of the sixth lens element and the image plane on the optical axis is BL, the distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element on the optical axis is TD, the thickness of the fourth lens element on the optical axis is CT4, and the thickness of the fifth lens element on the optical axis is CT5, which satisfy the following relations:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0< BL/TD < 0.70; and
CT4/CT5<3.0。
the invention further provides an image capturing device, which comprises the image capturing lens system and an electronic photosensitive element.
The first lens element is designed to have positive refractive power, so that the convergence capability of the whole system is concentrated on the object side end of the lens, the volume of the system can be effectively controlled, and the carrying convenience is improved. The second lens element with negative refractive power can correct chromatic aberration of the system. The object side surface of the sixth lens is a concave surface, so that the incident angle of light can be more appropriate, and the phenomenon that the image generates stray light due to total reflection caused by overlarge incident angle is avoided.
When T56/(Σ AT-T56) satisfies the condition, the system can have enough space to avoid interference between the fifth lens and the sixth lens, and thus is more suitable for lens assembly.
When the f/R1 satisfies the above condition, the refractive power of the first lens element can be enhanced, so that the system can be more versatile in configuration and application.
When BL/TD satisfies the condition, the control system can be favorably controlled to control the back focus, so that the space utilization efficiency is improved, the whole volume is reduced, and the aim of miniaturization is fulfilled.
When the CT4/CT5 meets the conditions, the lens can be formed and manufactured conveniently, and the system has good imaging quality.
Drawings
Fig. 1A is a schematic view of an image capturing apparatus according to a first embodiment of the invention.
FIG. 1B is a diagram of an aberration curve according to the first embodiment of the present invention.
Fig. 2A is a schematic view of an image capturing apparatus according to a second embodiment of the present invention.
FIG. 2B is an aberration diagram of the second embodiment of the present invention.
Fig. 3A is a schematic view of an image capturing apparatus according to a third embodiment of the present invention.
FIG. 3B is a diagram of an aberration curve according to a third embodiment of the present invention.
Fig. 4A is a schematic view of an image capturing apparatus according to a fourth embodiment of the invention.
FIG. 4B is an aberration diagram according to a fourth embodiment of the present invention.
Fig. 5A is a schematic view of an image capturing apparatus according to a fifth embodiment of the present invention.
FIG. 5B is an aberration diagram of a fifth embodiment of the present invention.
Fig. 6A is a schematic view of an image capturing apparatus according to a sixth embodiment of the invention.
FIG. 6B is an aberration diagram according to the sixth embodiment of the present invention.
Fig. 7A is a schematic view of an image capturing apparatus according to a seventh embodiment of the invention.
FIG. 7B is an aberration diagram according to the seventh embodiment of the present invention.
Fig. 8A is a schematic view of an image capturing apparatus according to an eighth embodiment of the present invention.
FIG. 8B is an aberration diagram according to the eighth embodiment of the present invention.
Fig. 9A is a schematic view of an image capturing apparatus according to a ninth embodiment of the invention.
FIG. 9B is an aberration diagram of the ninth embodiment of the present invention.
Fig. 10A is a diagram illustrating a smart phone equipped with an image capturing device according to the present invention.
Fig. 10B is a schematic diagram of a tablet pc equipped with the image capturing device of the present invention.
Fig. 10C is a diagram illustrating a wearable device equipped with the image capturing apparatus of the present invention.
Description of the symbols of the drawings:
aperture 100, 200, 300, 400, 500, 600, 700, 800, 900
First lens 110, 210, 310, 410, 510, 610, 710, 810, 910
Object side surfaces 111, 211, 311, 411, 511, 611, 711, 811, and 911
Like side surfaces 112, 212, 312, 412, 512, 612, 712, 812, 912
Second lens 120, 220, 320, 420, 520, 620, 720, 820, 920
Object side surfaces 121, 221, 321, 421, 521, 621, 721, 821, 921
Image side 122, 222, 322, 422, 522, 622, 722, 822, 922
Third lens 130, 230, 330, 430, 530, 630, 730, 830, 930
Object sides 131, 231, 331, 431, 531, 631, 731, 831, 931
Like side surfaces 132, 232, 332, 432, 532, 632, 732, 832, 932
Fourth lens 140, 240, 340, 440, 540, 640, 740, 840, 940
Object side surfaces 141, 241, 341, 441, 541, 641, 741, 841, 941
Image side 142, 242, 342, 442, 542, 642, 742, 842, 942
Fifth lens 150, 250, 350, 450, 550, 650, 750, 850, 950
Object side 151, 251, 351, 451, 551, 651, 751, 851, 951
Like side 152, 252, 352, 452, 552, 652, 752, 852, 952
Sixth lens 160, 260, 360, 460, 560, 660, 760, 860, 960
Object side surfaces 161, 261, 361, 461, 561, 661, 761, 861, 961
Like sides 162, 262, 362, 462, 562, 662, 762, 862, 962
Infrared filtering filter element 170, 270, 370, 470, 570, 670, 770, 870, 970
Imaging planes 180, 280, 380, 480, 580, 680, 780, 880, 980
Electro- optic elements 190, 290, 390, 490, 590, 690, 790, 890, 990
Image capturing device 1001
Smart phone 1010
Tablet computer 1020
Wearable device 1030
Detailed Description
The invention provides an image capturing lens system, which sequentially comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element with refractive power from an object side to an image side. The image capturing lens system is further provided with an aperture, and six lenses with refractive power are arranged in the image capturing lens system.
In the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element of the image capturing lens system of the previous paragraph, any two adjacent lens elements have an air gap on the optical axis, that is, the image capturing lens system has six single non-bonded lens elements. Because the process of bonding the lens is more complicated than that of non-bonding lens, especially the bonding surfaces of the two lenses need to have a curved surface with high accuracy, so as to achieve high degree of tightness when the two lenses are bonded, and in the bonding process, poor degree of tightness due to deviation may be caused, which affects the overall optical imaging quality. Therefore, in the image capturing lens system of the present invention, an air space is formed between any two adjacent lenses with refractive power, which can effectively improve the problem caused by the adhesion of the lenses.
The first lens element with positive refractive power concentrates the convergence power of the whole system on the object side of the lens, thereby effectively controlling the system volume and improving the carrying convenience. The object-side surface of the first lens element is convex at a paraxial region thereof, and the configuration of positive refractive power can be adjusted to enhance the miniaturization effect of the control system.
The second lens element with negative refractive power can correct chromatic aberration of the system.
The third lens element has positive refractive power, so that the configuration of positive refractive power can be effectively balanced.
The fourth lens element with negative refractive power can correct the focus position of the peripheral image and prevent the peripheral image from being bent. The object-side surface of the fourth lens element can be concave at a paraxial region thereof, and the image-side surface of the fourth lens element can be concave at a paraxial region thereof, thereby facilitating correction of aberration of the imaging lens system.
The fifth lens element with positive refractive power has the advantages of reducing near-object spherical aberration and astigmatism, and balancing the positive refractive power configuration. The object-side surface of the fifth lens element can be convex at a paraxial region thereof, thereby effectively correcting Distortion and high-order aberration of peripheral light of the image capturing lens system and improving resolution.
The sixth lens element with negative refractive power can keep a Principal Point (Principal Point) of the image capturing lens system away from an image plane, thereby facilitating shortening of the total optical length of the image capturing lens system and maintaining miniaturization thereof. When the object side surface of the sixth lens element is a concave surface, the incident angle of light can be more appropriate, so that total reflection caused by an excessively large incident angle can be avoided, and further, the image can generate stray light.
The distance on the optical axis between the fifth lens element and the sixth lens element is T56, and the sum of the distances on the optical axis between all two adjacent lens elements in the imaging lens system is Σ AT. When the image capturing lens system satisfies the following relation: 0.30< T56/(Σ AT-T56), the system has enough space to avoid interference between the fifth lens and the sixth lens, and is therefore more suitable for lens assembly. Preferably, the image capturing lens system satisfies the following relation: 0.85< T56/(Σ AT-T56).
The focal length of the fourth lens element is f4, the focal length of the third lens element is f3, and the focal length of the taking lens system is f. When the image capturing lens system satisfies the following relation: 4.0< f4/| f3| <0, the system middle segment can have enough divergence accommodation function to balance the system aberration. Preferably, the image capturing lens system satisfies the following relation: -1.5< f4/| f3| <0. Preferably, the image capturing lens system can also satisfy the following relation: -0.65< f4/| f3| <0.
The focal length of the image capturing lens system is f, and the radius of curvature of the object-side surface of the first lens element is R1. When the image capturing lens system satisfies the following relation: 3.30< f/R1<9.50, the refractive power of the first lens element can be enhanced, and the system can be more versatile.
The distance between the image-side surface of the sixth lens element and the image plane is BL, and the distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD. When the image capturing lens system satisfies the following relation: when 0< BL/TD <0.70, the control system can be beneficial to back focus to improve the space utilization efficiency, and further the whole volume is reduced to achieve the aim of miniaturization. Preferably, the image capturing lens system satisfies the following relation: 0< BL/TD < 0.30.
The optical thickness of the fourth lens element is CT4, the optical thickness of the fifth lens element is CT5, and the imaging lens system satisfies the following relations: CT4/CT5<3.0 is beneficial to the molding and manufacturing of the lens, so that the system has good imaging quality. Preferably, the image capturing lens system satisfies the following relation: CT4/CT5< 1.7.
The maximum refractive index among the refractive indexes of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is Nmax. When the image capturing lens system satisfies the following relation: when Nmax is less than 1.70, it is helpful to properly arrange the lens material and improve the degree of freedom of design.
At least one of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element includes at least one inflection point for assisting in correcting the system aberration of the peripheral image.
The distance between the stop and the image-side surface of the sixth lens element on the optical axis is SD, and the distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element on the optical axis is TD. When the image capturing lens system satisfies the following relation: when SD/TD is more than 0.7 and less than 1.10, the total length of the system can be balanced while the light entering angle is controlled, and the overlarge volume of the system is avoided.
The focal length of the first lens element is f1, the focal length of the second lens element is f2, the focal length of the fourth lens element is f4, the focal length of the sixth lens element is f6, the focal length of the third lens element is f3, and the focal length of the fifth lens element is f5, when the imaging lens system satisfies the following relations: and when the total refractive power is less than or equal to | f1| < | f2| < | f4| < | f3|, | f1| < | f2| < | f4| < | f5|, | f1| < | f2| < | f6| < | f3|, and | f1| < | f2| < | f6| < | f5|, the total system refractive power configuration can be more balanced, so that the system can be more suitable for various different photographic requirements.
The curvature radius of the image-side surface of the second lens element is R4, and the curvature radius of the object-side surface of the second lens element is R3, preferably, when the imaging lens system satisfies the following relation: when the aberration is-0.20 < R4/R3<0.40, the high-order aberration of the system can be corrected, the imaging quality can be improved, the back focal length of the system can be effectively suppressed, and the space can be fully utilized, so that the image taking lens system can achieve a tighter effect.
The image capturing lens system has a focal length f, a radius of curvature of the object-side surface of the sixth lens element is R11, and a radius of curvature of the image-side surface of the sixth lens element is R12, wherein the following relationships are satisfied: when the power is 8.0< (f/R11) + (f/R12) < -1.5, the refraction angle of the light emitted from the lens system can be effectively controlled, so that the peripheral image aberration can be corrected, and the back focus can be shortened to reduce the volume of the lens. Preferably, the image capturing lens system satisfies the following relation: -8.0< (f/R11) + (f/R12) < -2.5.
When the abbe number of the second lens element is V2, the abbe number of the third lens element is V3, the abbe number of the fifth lens element is V5, and the abbe number of the fourth lens element is V4, the taking lens system satisfies the following relations: 0.70< (V2+ V3+ V5)/V4<1.50, the dispersion capability of the system can be enhanced to compensate the difference of the convergence capability among the light beams in different wave bands.
In the imaging lens system of the present invention, a horizontal distance on an optical axis from a vertex on the optical axis of the image-side surface of the sixth lens element to a position of a maximum effective diameter of the image-side surface is SAG62, SAG62 is defined as a negative value if the horizontal distance is in an object-side direction, and SAG62 is defined as a positive value if the horizontal distance is in an image-side direction; the thickness of the sixth lens element along the optical axis is CT6, preferably, when the imaging lens system satisfies the following relation: SAG62/CT6< -1.7, the shape of the sixth lens is not too curved and the thickness is moderate, which is beneficial to the manufacture and molding of the lens, and is also beneficial to reducing the space required by lens assembly, so that the configuration of the lens can be more compact.
When the image capturing lens system meets the condition that the dispersion coefficient of at least one lens with positive refractive power is less than 28.0, the difference of the convergence capability of each wave band can be balanced, so that the image capturing lens system is more suitable for long-distance scene shooting.
Half of the maximum viewing angle of the image capturing lens system is HFOV, and when the image capturing lens system satisfies the following relation: tan (2 × HFOV) <1.20, the image range can be effectively controlled, and a good telescopic function is provided, so that the requirements of long-range photography (Telephoto) can be met.
An axial distance between the third lens element and the fourth lens element is T34, an axial distance between the fourth lens element and the fifth lens element is T45, and the imaging lens system satisfies the following relations: when T34< T45, the fourth lens element is preferably disposed to facilitate lens assembly and correction of system aberrations.
The distance between the fifth lens element and the sixth lens element is T56, the thickness of the fifth lens element is CT5, and the following relation is satisfied when T56/CT 5: 2.0< T56/CT5, the distance between the fifth lens element and the sixth lens element can be effectively increased to set other mechanism elements, and further control the light entering amount, the exposure time, the filtering and other properties of the image, thereby achieving the effect of enhancing the image adjusting capability.
The focal length of the image capturing lens system is f, and the focal length of the fourth lens element is f4, when the image capturing lens system satisfies the following relation: 1.50< f/f4< -0.30, the accuracy of the focus position at the periphery of the image can be improved, so as to be beneficial to correcting the image curvature of the system and make the image more realistic.
The first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are all made of plastic, wherein a distance between an object-side surface of the first lens element and an imaging surface on an optical axis is TL, and the following relationships are satisfied: when TL is less than 8.0mm, the size of the image taking lens system can be controlled, so that the system can be miniaturized conveniently.
In the image capturing lens system disclosed by the invention, the lens can be made of glass or plastic, if the lens is made of glass, the degree of freedom of the refractive power configuration of the image capturing lens system can be increased, and if the lens is made of plastic, the production cost can be effectively reduced. In addition, the mirror surface can be provided with an Aspheric Surface (ASP), which can be easily made into shapes other than spherical surfaces to obtain more control variables for reducing aberration and further reducing the number of lenses, thereby effectively reducing the total length of the image capturing lens system.
In the image capturing lens system disclosed in the present invention, at least one Aperture Stop, such as an Aperture Stop (Aperture Stop), a flare Stop (Glare Stop), or a Field Stop (Field Stop), may be disposed, which is helpful for reducing stray light to improve image quality.
In the image capturing lens system disclosed by the invention, the aperture configuration can be in a front position or a middle position, the front aperture means that the aperture is arranged between a subject and the first lens, the middle aperture means that the aperture is arranged between the first lens and the imaging surface, the front aperture can enable an Exit Pupil (Exit Pupil) of the image capturing lens system to generate a longer distance with the imaging surface, so that the image capturing lens system has a Telecentric (telecentricity) effect, and the image receiving efficiency of an electronic photosensitive element such as a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) can be increased; the central aperture is helpful to enlarge the field angle of the system, so that the image capturing lens system has the advantage of a wide-angle lens.
In the imaging lens system disclosed in the present invention, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at the paraxial region. If the refractive power or focal length of the lens element does not define the position of the lens region, it means that the refractive power or focal length of the lens element is the refractive power or focal length of the lens element at the paraxial region.
In the Image capturing lens system disclosed in the present invention, the Image Surface of the Image capturing lens system may be a plane or a curved Surface with any curvature, especially a curved Surface with a concave Surface facing the object side, depending on the corresponding electronic photosensitive element.
The image capturing lens system disclosed by the invention can be applied to an optical system for moving focusing according to requirements, and has the characteristics of excellent aberration correction and good imaging quality. The invention can also be applied to electronic devices such as 3D (three-dimensional) image acquisition, digital cameras, mobile devices, tablet computers, smart televisions, network monitoring equipment, motion sensing game machines, driving recorders, backing developing devices, wearable devices and the like in many ways.
The invention further provides an image capturing device, which comprises the image capturing lens system and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the image capturing lens system, so that the image capturing device can achieve the optimal imaging effect by virtue of the design of the image capturing lens system. Preferably, the image capturing lens system may further include a Barrel (Barrel Member), a Holder (Holder Member), or a combination thereof.
Referring to fig. 10A, 10B and 10C, the image capturing device 1001 may be mounted on an electronic device, which includes, but is not limited to: a smartphone 1010, a tablet 1020, or a wearable device 1030. The electronic device disclosed in the foregoing is only an exemplary embodiment of the image capturing device of the present invention, and is not intended to limit the scope of the image capturing device of the present invention. Preferably, the electronic device may further include a Control unit (Control Units), a Display unit (Display Units), a Storage unit (Storage Units), a Random Access Memory (RAM), or a combination thereof.
The image capturing device and the image capturing lens system disclosed in the present invention will be described in detail by the following embodiments in conjunction with the accompanying drawings.
First embodiment
Referring to fig. 1A, an aberration curve of the first embodiment of the present invention is shown in fig. 1B. The image capturing device of the first embodiment includes an image capturing lens system (not numbered) and an electronic sensing device 190, the image capturing lens system includes, in order from an object side to an image side, a first lens element 110, an aperture stop 100, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, a sixth lens element 160, an ir-cut filter element 170 and an image plane 180, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 110 with positive refractive power having a convex object-side surface 111 at a paraxial region and a convex image-side surface 112 at a paraxial region, wherein the object-side surface 111 and the image-side surface 112 are aspheric;
a plastic second lens element 120 with negative refractive power having a convex object-side surface 121 at a paraxial region and a concave image-side surface 122 at a paraxial region, wherein the object-side surface 121 and the image-side surface 122 are aspheric;
a plastic third lens element 130 with negative refractive power having a convex object-side surface 131 at a paraxial region and a concave image-side surface 132 at a paraxial region, wherein the object-side surface 131 and the image-side surface 132 are aspheric;
a plastic fourth lens element 140 with negative refractive power having a convex object-side surface 141 at a paraxial region and a concave image-side surface 142 at a paraxial region, wherein the object-side surface 141 and the image-side surface 142 are aspheric;
a plastic fifth lens element 150 with positive refractive power having a convex object-side surface 151 at a paraxial region, a concave image-side surface 152 at a paraxial region, and both object-side surface 151 and image-side surface 152 being aspheric; and
a plastic sixth lens element 160 with negative refractive power having a concave object-side surface 161 at a paraxial region, a convex image-side surface 162 at a paraxial region, and both object-side surface 161 and image-side surface 162 being aspheric;
wherein at least one of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150 and the sixth lens element 160 comprises at least one inflection point;
wherein the material of the infrared filtering filter element 170 is glass and does not affect the focal length; the electronic photosensitive element 190 is disposed on the image plane 180.
The detailed optical data of the first embodiment is shown in table one, the aspheric data is shown in table two, the unit of the curvature radius, the thickness and the focal length is millimeter, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000111
Figure BDA0001828704320000112
Figure BDA0001828704320000121
The curve equation for the above aspheric surface is expressed as follows:
Figure BDA0001828704320000122
wherein:
x: the relative distance between a point on the aspheric surface, which is Y away from the optical axis, and a tangent plane tangent to the vertex on the aspheric surface optical axis;
y: the perpendicular distance between a point on the aspheric curve and the optical axis;
r: a radius of curvature;
k: the cone coefficient;
ai: the ith order aspheric coefficients.
In a first embodiment, the focal length of the image capturing lens system is f, the aperture value of the image capturing lens system is Fno, and half of the maximum viewing angle in the image capturing lens system is HFOV, which has the following values: f is 6.44 (mm), Fno is 3.00, HFOV is 23.0 (degrees).
In a first embodiment, a maximum refractive index of refractive indexes of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150, and the sixth lens element 160 in the image capturing lens system is Nmax, which has a value: nmax is 1.639.
In the first embodiment, the second lens 120 has an abbe number of V2, the third lens 130 has an abbe number of V3, the fifth lens has an abbe number of V5, and the fourth lens 140 has an abbe number of V4, which are expressed by the following relations: (V2+ V3+ V5)/V4 ═ 1.26.
In the first embodiment, the optical axis thickness of the fourth lens element 140 is CT4, the optical axis thickness of the fifth lens element 150 is CT5, and the relationship is: CT4/CT5 is 0.96.
In the first embodiment, the axial distance between the fifth lens element 150 and the sixth lens element 160 is T56, the axial thickness of the fifth lens element 150 is CT5, and the relationship is: T56/CT5 is 3.84.
In the first embodiment, the focal length of the image capturing lens system is f, the radius of curvature of the object-side surface of the first lens element 110 is R1, and the relationship is: f/R1-3.84.
In the first embodiment, the radius of curvature of the image-side surface of the second lens element 120 is R4, and the radius of curvature of the object-side surface of the second lens element 120 is R3, which are expressed by the following relation: R4/R3 ═ 0.06.
In the first embodiment, the focal length of the taking lens system is f, the radius of curvature of the object-side surface of the sixth lens element 160 is R11, the radius of curvature of the image-side surface of the sixth lens element 160 is R12, and the relationship therebetween is: (f/R11) + (f/R12) — 3.37.
In the first embodiment, the focal length of the fourth lens element 140 is f4, the focal length of the third lens element 130 is f3, and they satisfy the following relation: f4/| f3| -0.07.
In the first embodiment, the focal length of the image capturing lens system is f, and the focal length of the fourth lens element 140 is f4, which are expressed by the following relation: f/f4 is-0.73.
In the first embodiment, the axial distance between the fifth lens element 150 and the sixth lens element 160 is T56, and the sum of the axial distances between all two adjacent lens elements in the imaging lens system is Σ AT, which is expressed by the following relation: t56/(Σ AT-T56) is 1.94.
In a first embodiment, half of the maximum viewing angle of the taking lens system is HFOV, and has the following values: tan (2 × HFOV) ═ 1.03.
In the first embodiment, the horizontal displacement distance on the optical axis from the intersection point of the image-side surface of the sixth lens element 160 to the position of the maximum effective diameter of the image-side surface is SAG62, the thickness of the sixth lens element 160 on the optical axis is CT6, and the relationship is: SAG62/CT6 is-2.03.
In the first embodiment, an axial distance between the stop and the image-side surface of the sixth lens element 160 is SD, an axial distance between the object-side surface of the first lens element 110 and the image-side surface of the sixth lens element 160 is TD, and they satisfy the following relation: SD/TD is 0.85.
In the first embodiment, an axial distance between the image-side surface of the sixth lens element 160 and the image plane is BL, an axial distance between the object-side surface of the first lens element 110 and the image-side surface of the sixth lens element 160 is TD, and they satisfy the following relation: BL/TD is 0.18.
In the first embodiment, the distance TL on the optical axis between the object-side surface 111 of the first lens element and the image plane 170 is as follows: TL 6.08 (mm).
Second embodiment
Referring to FIG. 2A for a second embodiment of the present invention, an aberration curve for the second embodiment is shown in FIG. 2B. The image capturing device of the second embodiment of the present invention comprises an image capturing lens system (not numbered) and an electronic sensing device 290, the image capturing lens system sequentially comprises, from an object side to an image side, a first lens element 210, a second lens element 220, an aperture stop 200, a third lens element 230, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260, an ir-cut filter element 270 and an image plane 280, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 210 with positive refractive power having a convex object-side surface 211 at a paraxial region, a convex image-side surface 212 at a paraxial region, and both object-side surface 211 and image-side surface 212 being aspheric;
a plastic second lens element 220 with negative refractive power having a convex object-side surface 221 at a paraxial region and a concave image-side surface 222 at a paraxial region, wherein the object-side surface 221 and the image-side surface 222 are aspheric;
a plastic third lens element 230 with positive refractive power having a convex object-side surface 231 at a paraxial region, a convex image-side surface 232 at a paraxial region, and both object-side surface 231 and image-side surface 232 being aspheric;
a plastic fourth lens element 240 with negative refractive power having a concave object-side surface 241 at a paraxial region, a convex image-side surface 242 at a paraxial region, and both object-side surface 241 and image-side surface 242 being aspheric;
a plastic fifth lens element 250 with positive refractive power having a convex object-side surface 251 and a concave image-side surface 252 at a paraxial region, both the object-side surface 251 and the image-side surface 252 being aspheric; and
a plastic sixth lens element 260 with negative refractive power having a concave object-side surface 261 and a convex image-side surface 262 at a paraxial region, wherein the object-side surface 261 and the image-side surface 262 are aspheric;
wherein at least one of the first lens element 210, the second lens element 220, the third lens element 230, the fourth lens element 240, the fifth lens element 250, and the sixth lens element 260 comprises at least one inflection point;
wherein the material of the infrared filtering filter element 270 is glass and does not affect the focal length; the electron sensor 290 is disposed on the image plane 280.
Detailed optical data of the second embodiment is shown in table three, aspheric data thereof is shown in table four, the units of curvature radius, thickness and focal length are millimeters, and HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000141
Figure BDA0001828704320000151
Figure BDA0001828704320000152
The second embodiment aspherical surface curve equation is expressed as in the first embodiment. In addition, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table five.
Figure BDA0001828704320000161
Third embodiment
Referring to FIG. 3A for a third embodiment of the present invention, an aberration curve of the third embodiment is shown in FIG. 3B. The image capturing device of the third embodiment of the present invention comprises an image capturing lens system (not numbered) and an electronic sensing device 390, wherein the image capturing lens system comprises, in order from an object side to an image side, an aperture stop 300, a first lens element 310, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350, a sixth lens element 360, an ir-cut filter element 370 and an image plane 380, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 310 with positive refractive power having a convex object-side surface 311 at a paraxial region and a concave image-side surface 312 at a paraxial region, wherein the object-side surface 311 and the image-side surface 312 are aspheric;
a plastic second lens element 320 with negative refractive power having a convex object-side surface 321 at a paraxial region and a concave image-side surface 322 at a paraxial region, wherein the object-side surface 321 and the image-side surface 322 are aspheric;
a plastic third lens element 330 with positive refractive power having a convex object-side surface 331 at a paraxial region, a concave image-side surface 332 at a paraxial region, and both object-side surface 331 and image-side surface 332 being aspheric;
a plastic fourth lens element 340 with negative refractive power having a concave object-side surface 341 at a paraxial region, a concave image-side surface 342 at a paraxial region, and both the object-side surface 341 and the image-side surface 342 being aspheric;
a plastic fifth lens element 350 with positive refractive power having a convex object-side surface 351 at a paraxial region, a concave image-side surface 352 at a paraxial region, and both object-side surface 351 and image-side surface 352 being aspheric; and
a plastic sixth lens element 360 with negative refractive power having a concave object-side surface 361 at a paraxial region, a convex image-side surface 362 at a paraxial region, and both object-side surface 361 and image-side surface 362 being aspheric;
wherein at least one of the first lens element 310, the second lens element 320, the third lens element 330, the fourth lens element 340, the fifth lens element 350 and the sixth lens element 360 comprises at least one inflection point;
wherein the material of the infrared filtering element 370 is glass and does not affect the focal length; the electro-optic element 390 is disposed on the image plane 380.
Detailed optical data for the third embodiment is shown in table six, aspheric data is shown in table seven, radius of curvature, thickness and focal length are in millimeters, and HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000171
Figure BDA0001828704320000172
Figure BDA0001828704320000181
The third embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table eight.
Figure BDA0001828704320000182
Fourth embodiment
Referring to FIG. 4A for a fourth embodiment of the present invention, an aberration curve of the fourth embodiment is shown in FIG. 4B. The image capturing device of the fourth embodiment of the present invention includes an image capturing lens system (not shown) and an electronic sensing device 480, the image capturing lens system includes, in order from an object side to an image side, an aperture stop 400, a first lens element 410, a second lens element 420, a third lens element 430, a fourth lens element 440, a fifth lens element 450, a sixth lens element 460, an ir-cut filter 470 and an image plane 480, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 410 with positive refractive power having a convex object-side surface 411 at a paraxial region, a convex image-side surface 412 at a paraxial region, and both object-side surface 411 and image-side surface 412 aspheric;
a plastic second lens element 420 with negative refractive power having a convex object-side surface 421 at a paraxial region, a concave image-side surface 422 at a paraxial region, and both object-side surface 421 and image-side surface 422 being aspheric;
a plastic third lens element 430 with positive refractive power having a convex object-side surface 431 at a paraxial region, a concave image-side surface 432 at a paraxial region, and both object-side surface 431 and image-side surface 432 being aspheric;
a plastic fourth lens element 440 with negative refractive power having a concave object-side surface 441 at a paraxial region, a concave image-side surface 442 at a paraxial region, and both object-side surface 441 and image-side surface 442 being aspheric;
a plastic fifth lens element 450 with positive refractive power having a convex object-side surface 451 at a paraxial region, a concave image-side surface 452 at a paraxial region, and both object-side surface 451 and image-side surface 452 being aspheric; and
a plastic sixth lens element 460 with positive refractive power having a concave object-side surface 461 at a paraxial region, a convex image-side surface 462 at a paraxial region, and both object-side surface 461 and image-side surface 462 being aspheric;
wherein at least one of the first lens element 410, the second lens element 420, the third lens element 430, the fourth lens element 440, the fifth lens element 450, and the sixth lens element 460 comprises at least one inflection point;
wherein the material of the infrared filtering filter element is glass and does not affect the focal length; the electronic photosensitive element 490 is disposed on the image plane 480.
The detailed optical data of the fourth embodiment is shown in table nine, the aspheric data is shown in table ten, the units of the radius of curvature, the thickness and the focal length are millimeters, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000191
Figure BDA0001828704320000201
Figure BDA0001828704320000202
The fourth embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table eleven.
Figure BDA0001828704320000203
Figure BDA0001828704320000211
Fifth embodiment
Referring to FIG. 5A, an aberration curve of the fifth embodiment of the present invention is shown in FIG. 5B. The image capturing device of the fifth embodiment of the present invention includes an image capturing lens system (not numbered) and an electronic photosensitive element 590, the image capturing lens system includes, in order from an object side to an image side, an aperture stop 500, a first lens element 510, a second lens element 520, a third lens element 530, a fourth lens element 540, a fifth lens element 550, a sixth lens element 560, an ir-cut filter element 570 and an image plane 580, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 510 with positive refractive power having a convex object-side surface 511 at a paraxial region thereof and a convex image-side surface 512 at a paraxial region thereof, wherein the object-side surface 511 and the image-side surface 512 are aspheric;
a plastic second lens element 520 with negative refractive power having a concave object-side surface 521 at a paraxial region, a concave image-side surface 522 at a paraxial region, and both object-side surface 521 and image-side surface 522 being aspheric;
a plastic third lens element 530 with positive refractive power having a convex object-side surface 531 at a paraxial region, a concave image-side surface 532 at a paraxial region, and both object-side surface 531 and image-side surface 532 being aspheric;
a plastic fourth lens element 540 with negative refractive power having a concave object-side surface 541 at a paraxial region, a concave image-side surface 542 at a paraxial region, and both object-side surface 541 and image-side surface 542 being aspheric; and
a plastic fifth lens element 550 with negative refractive power having a concave object-side surface 551 at a paraxial region, a convex image-side surface 552 at a paraxial region, and both object-side surface 551 and image-side surface 552 being aspheric;
a plastic sixth lens element 560 with positive refractive power having a concave object-side surface 561 at a paraxial region, a convex image-side surface 562 at a paraxial region, and both the object-side surface 561 and the image-side surface 562 being aspheric;
wherein at least one of the first lens element 510, the second lens element 520, the third lens element 530, the fourth lens element 540, the fifth lens element 550 and the sixth lens element 560 comprises at least one inflection point;
wherein the material of the IR-cut filter 570 is glass and does not affect the focal length; the electronic photosensitive element 590 is disposed on the image plane 580.
The detailed optical data of the fifth embodiment is shown in table twelve, the aspheric data is shown in table thirteen, the units of the radius of curvature, the thickness and the focal length are millimeters, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000221
Figure BDA0001828704320000222
Figure BDA0001828704320000231
The fifth embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of the respective relations are as explained in the first embodiment, but the numerical values of the respective relations are as listed in the fourteenth table.
Figure BDA0001828704320000232
Sixth embodiment
Referring to FIG. 6A for a sixth embodiment of the present invention, an aberration curve for the sixth embodiment is shown in FIG. 6B. The image capturing device of the sixth embodiment of the present invention comprises an image capturing lens system (not shown) and an electronic photosensitive element 690, wherein the image capturing lens system comprises, in order from an object side to an image side, an aperture stop 600, a first lens element 610, a second lens element 620, a third lens element 630, a fourth lens element 640, a fifth lens element 650, a sixth lens element 660, an ir-cut filter element 670 and an image plane 680, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 610 with positive refractive power having a convex object-side surface 611 at a paraxial region, a convex image-side surface 612 at a paraxial region, and both object-side surface 611 and image-side surface 612 aspheric;
a plastic second lens element 620 with negative refractive power having a concave object-side surface 621 at a paraxial region, a concave image-side surface 622 at a paraxial region, and both object-side surface 621 and image-side surface 622 being aspheric;
a plastic third lens element 630 with positive refractive power having a concave object-side surface 631 at a paraxial region, a convex image-side surface 632 at a paraxial region, and both object-side surface 631 and image-side surface 632 being aspheric;
a plastic fourth lens element 640 with negative refractive power having a concave object-side surface 641 at the paraxial region, a concave image-side surface 642 at the paraxial region, and both the object-side surface 641 and the image-side surface 642 being aspheric;
a plastic fifth lens element 650 with negative refractive power having a convex object-side surface 651 at a paraxial region thereof, a concave image-side surface 652 at a paraxial region thereof, and both object-side surface 651 and image-side surface 652 being aspheric; and
a plastic sixth lens element 660 with negative refractive power having a concave object-side surface 661 at a paraxial region, a convex image-side surface 662 at a paraxial region, and both object-side surface 661 and image-side surface 662 being aspheric;
wherein at least one of the first lens element 610, the second lens element 620, the third lens element 630, the fourth lens element 640, the fifth lens element 650, and the sixth lens element 660 comprises at least one inflection point;
wherein the material of the IR-cut filter 670 is glass and does not affect the focal length; the electro-optic device 690 is disposed on the image plane 680.
The detailed optical data of the sixth embodiment is shown in table fifteen, the aspheric data is shown in table sixteen, the units of the radius of curvature, the thickness and the focal length are millimeters, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000241
Figure BDA0001828704320000251
Figure BDA0001828704320000252
The sixth embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of the respective relations are as explained in the first embodiment, but the numerical values of the respective relations are as listed in seventeen.
Figure BDA0001828704320000253
Seventh embodiment
Referring to FIG. 7A for a seventh embodiment of the present invention, an aberration curve for the seventh embodiment is shown in FIG. 7B. The image capturing device of the seventh embodiment of the present invention includes an image capturing lens system (not numbered) and an electronic sensing device 790, the image capturing lens system includes, in order from an object side to an image side, a first lens element 710, a second lens element 720, an aperture stop 700, a third lens element 730, a fourth lens element 740, a fifth lens element 750, a sixth lens element 760, an ir-cut filter element 770 and an image plane 780, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 710 with positive refractive power having a convex object-side surface 711 at a paraxial region, a concave image-side surface 712 at a paraxial region, and both object-side surface 711 and image-side surface 712 being aspheric;
a plastic second lens element 720 with negative refractive power having a convex object-side surface 721 at a paraxial region, a concave image-side surface 722 at a paraxial region, and both the object-side surface 721 and the image-side surface 722 being aspheric;
a plastic third lens element 730 with negative refractive power having a convex object-side surface 731 at a paraxial region, a concave image-side surface 732 at a paraxial region, and both object-side surface 731 and image-side surface 732 being aspheric;
a plastic fourth lens element 740 with negative refractive power having a concave object-side surface 741 at a paraxial region, a concave image-side surface 742 at a paraxial region, and both object-side surface 741 and image-side surface 742 being aspheric;
a plastic fifth lens element 750 with positive refractive power having a convex object-side surface 751 at a paraxial region, a concave image-side surface 752 at a paraxial region, and both object-side and image- side surfaces 751 and 752 being aspheric; and
a plastic sixth lens element 760 with negative refractive power having a concave object-side surface 761 at a paraxial region, a convex image-side surface 762 at a paraxial region, and both object-side surface 761 and image-side surface 762 being aspheric;
wherein at least one of the first lens element 710, the second lens element 720, the third lens element 730, the fourth lens element 740, the fifth lens element 750, and the sixth lens element 760 comprises at least one inflection point;
wherein the material of the infrared filtering element 770 is glass and does not affect the focal length; the electronic photosensitive element 790 is disposed on the image plane 780.
The detailed optical data of the seventh embodiment is shown in table eighteen, the aspheric data thereof is shown in table nineteen, the units of the radius of curvature, the thickness and the focal length are in millimeters, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000261
Figure BDA0001828704320000271
Figure BDA0001828704320000272
The expression of the aspherical surface curve equation of the seventh embodiment is the same as that of the first embodiment. In addition, the parameters of the respective relations are as explained in the first embodiment, but the numerical values of the respective relations are as listed in table twenty.
Figure BDA0001828704320000281
Eighth embodiment
Referring to FIG. 8A for an eighth embodiment of the present invention, an aberration curve of the eighth embodiment is shown in FIG. 8B. The image capturing device of the eighth embodiment of the present invention comprises an image capturing lens system (not shown) and an electronic sensing device 880, wherein the image capturing lens system comprises, in order from an object side to an image side, a first lens element 810, an aperture stop 800, a second lens element 820, a third lens element 830, a fourth lens element 840, a fifth lens element 850, a sixth lens element 860, a stop 801, an ir-cut filter 870 and an image plane 880, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 810 with positive refractive power having a convex object-side surface 811 at a paraxial region, a convex image-side surface 812 at a paraxial region, and both object-side surface 811 and image-side surface 812 being aspheric;
a plastic second lens element 820 with negative refractive power having a concave object-side surface 821 at a paraxial region, a concave image-side surface 822 at a paraxial region, and both object-side surface 821 and image-side surface 822 being aspheric;
a plastic third lens element 830 with positive refractive power having a convex object-side surface 831 at a paraxial region, a concave image-side surface 832 at a paraxial region, and both object-side surface 831 and image-side surface 832 being aspheric;
a plastic fourth lens element 840 with negative refractive power having a concave object-side surface 841 at a paraxial region and a concave image-side surface 842 at a paraxial region, both the object-side surface 841 and the image-side surface 842 being aspheric;
a plastic fifth lens element 850 with positive refractive power having a convex object-side surface 851 at a paraxial region, a concave image-side surface 852 at a paraxial region, and both object-side surface 851 and image-side surface 852 being aspheric; and
a plastic sixth lens element 860 with negative refractive power having a concave object-side surface 861 at the paraxial region and a convex image-side surface 862 at the paraxial region, wherein the object-side surface 861 and the image-side surface 862 are aspheric;
wherein at least one of the first lens element 810, the second lens element 820, the third lens element 830, the fourth lens element 840, the fifth lens element 850, and the sixth lens element 860 comprises at least one inflection point;
wherein the material of the infrared filtering element 870 is glass and does not affect the focal length; the electrophotographic photosensitive member 890 is disposed on the image plane 880.
Detailed optical data of the eighth embodiment is shown in table twenty-one, aspheric data is shown in table twenty-two, radius of curvature, thickness and focal length are in millimeters, and HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000291
Figure BDA0001828704320000292
Figure BDA0001828704320000301
The eighth embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in twenty-three of the table.
Figure BDA0001828704320000302
Ninth embodiment
Referring to FIG. 9A for a ninth embodiment of the present invention, an aberration curve of the ninth embodiment is shown in FIG. 9B. The image capturing device of the ninth embodiment of the present invention includes an image capturing lens system (not numbered) and an electronic photosensitive element 990, the image capturing lens system includes, in order from an object side to an image side, a first lens element 910, an aperture stop 900, a second lens element 920, a third lens element 930, a fourth lens element 940, a fifth lens element 950, a sixth lens element 960, an ir-cut filter element 970 and an image plane 980, and an air gap is formed between any two adjacent lens elements on an optical axis, wherein:
a plastic first lens element 910 with positive refractive power having a convex object-side surface 911 at a paraxial region and a convex image-side surface 912 at a paraxial region, wherein both the object-side surface 911 and the image-side surface 912 are aspheric;
a plastic second lens element 920 with negative refractive power having a convex object-side surface 921 at a paraxial region, a concave image-side surface 922 at a paraxial region, and both object-side surface 921 and image-side surface 922 being aspheric;
a plastic third lens element 930 with positive refractive power having a convex object-side surface 931 at a paraxial region, a concave image-side surface 932 at a paraxial region, and both object-side surface 931 and image-side surface 932 being aspheric;
a plastic fourth lens element 940 with negative refractive power having a concave object-side surface 941 at a paraxial region and a concave image-side surface 942 at a paraxial region, wherein the object-side surface 941 and the image-side surface 942 are aspheric;
a plastic fifth lens element 950 with positive refractive power having a convex object-side surface 951 at a paraxial region, a convex image-side surface 952 at a paraxial region, and both object-side surface 951 and image-side surface 952 being aspheric; and
a plastic sixth lens element 960 with negative refractive power having a concave object-side surface 961 at a paraxial region, a convex image-side surface 962 at a paraxial region, and both object-side surface 961 and image-side surface 962 being aspheric;
wherein at least one of the first lens element 910, the second lens element 920, the third lens element 930, the fourth lens element 940, the fifth lens element 950 and the sixth lens element 960 includes at least one inflection point;
wherein the infrared filtering element 970 is made of glass and does not affect the focal length; the electro-optic device 990 is disposed on the image plane 980.
The detailed optical data of the ninth embodiment is shown in table twenty-four, the aspheric data is shown in table twenty-five, the units of the radius of curvature, the thickness and the focal length are millimeters, and the HFOV is defined as half of the maximum viewing angle.
Figure BDA0001828704320000311
Figure BDA0001828704320000321
Figure BDA0001828704320000322
The ninth embodiment aspherical surface curve equation is expressed as in the form of the first embodiment. In addition, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in twenty-six of the table.
Figure BDA0001828704320000323
Figure BDA0001828704320000331
While the numerical variations of the embodiments of the imaging lens system disclosed herein are experimentally obtained, even though different numerical values are used, the same structure of the product still falls within the scope of the present disclosure, and therefore, the above description and drawings are only illustrative and not intended to limit the scope of the present disclosure.

Claims (28)

1. An image capturing lens system, in order from an object side to an image side, comprises: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, wherein the first lens element has positive refractive power, the object-side surface of the first lens element is convex, the second lens element has negative refractive power, the fifth lens element has positive refractive power, at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric, the object-side surface of the sixth lens element is concave, and at least one of the object-side surface and the image-side surface of the sixth lens element is aspheric;
wherein, the total number of the lenses of the image capturing lens system is six, and at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens comprises at least one inflection point;
wherein an axial distance between the fifth lens element and the sixth lens element is T56, a sum of axial distances between all two adjacent lens elements in the image capturing lens system is Σ AT, a focal length of the image capturing lens system is f, a radius of curvature of the object-side surface of the first lens element is R1, an axial distance between the image-side surface of the sixth lens element and the image plane is BL, an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, an axial thickness of the fourth lens element is CT4, an axial thickness of the fifth lens element is CT5, a maximum refractive index among refractive indices of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element is Nmax, and a half of a maximum viewing angle in the image capturing lens system is HFOV, and satisfies the following relationships:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0<BL/TD<0.70;
CT4/CT5<3.0;
nmax < 1.70; and
tan(2*HFOV)<1.20。
2. the image capturing lens system of claim 1, wherein an air space is disposed between adjacent lenses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element.
3. The image capturing lens system of claim 1, wherein the sixth lens element has negative refractive power.
4. The image capturing lens system of claim 1, wherein an axial distance between the image side surface of the sixth lens element and the image plane is BL, an axial distance between the object side surface of the first lens element and the image side surface of the sixth lens element is TD, and they satisfy the following relations:
0<BL/TD<0.30。
5. the image capturing lens system of claim 1, wherein the second lens element has an abbe number of V2, the third lens element has an abbe number of V3, the fifth lens element has an abbe number of V5, and the fourth lens element has an abbe number of V4, satisfying the following relationships:
0.70<(V2+V3+V5)/V4<1.50。
6. the imaging lens system of claim 1, wherein an axial distance between the fifth lens element and the sixth lens element is T56, and a sum of axial distances between all two adjacent lens elements in the imaging lens system is Σ AT, satisfying the following relationship:
0.85<T56/(ΣAT-T56)。
7. the imaging lens system of claim 1, wherein a horizontal displacement distance on an optical axis from an intersection point of the image-side surface of the sixth lens element on the optical axis to a position of a maximum effective diameter of the image-side surface is SAG62, and an optical thickness of the sixth lens element on the optical axis is CT6, which satisfies the following relation:
SAG62/CT6<-1.7。
8. the image capturing lens system of claim 1, wherein an abbe number of at least one of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element having positive refractive power is less than 28.0.
9. The image capturing lens system of claim 1, wherein the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are all made of plastic, and a distance TL on an optical axis between an object-side surface of the first lens element and the image plane satisfies the following relationship:
TL<8.0mm。
10. an image capturing device comprising the image capturing lens system as claimed in claim 1 and an electro-optic device.
11. An image capturing lens system, in order from an object side to an image side, comprises: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, wherein the first lens element has positive refractive power, the object-side surface of the first lens element is convex, the second lens element has negative refractive power, the fifth lens element has positive refractive power, at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric, the object-side surface of the sixth lens element is concave, and at least one of the object-side surface and the image-side surface of the sixth lens element is aspheric;
wherein, the total number of the lenses of the image capturing lens system is six, and at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens comprises at least one inflection point;
wherein an axial distance between the fifth lens element and the sixth lens element is T56, a sum of axial distances between all two adjacent lens elements in the image capturing lens system is Σ AT, a focal length of the image capturing lens system is f, a radius of curvature of the object-side surface of the first lens element is R1, an axial distance between the image-side surface of the sixth lens element and the image plane is BL, an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, an axial thickness of the fourth lens element is CT4, an axial thickness of the fifth lens element is CT5, a half of a maximum viewing angle in the image capturing lens system is HFOV, and satisfies the following relationships:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0< BL/TD < 0.30; CT4/CT5< 3.0; and
tan(2*HFOV)<1.20。
12. the image capturing lens system of claim 11, wherein an air space is disposed between adjacent lenses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element.
13. The image capturing lens system of claim 11, wherein the sixth lens element has negative refractive power.
14. The imaging lens system of claim 11, wherein the focal length of the imaging lens system is f, the radius of curvature of the object-side surface of the sixth lens element is R11, and the radius of curvature of the image-side surface of the sixth lens element is R12, satisfying the following relationship:
-8.0<(f/R11)+(f/R12)<-2.5。
15. the image capturing lens system of claim 11, wherein the second lens element has an abbe number of V2, the third lens element has an abbe number of V3, the fifth lens element has an abbe number of V5, and the fourth lens element has an abbe number of V4, satisfying the following relationships:
0.70<(V2+V3+V5)/V4<1.50。
16. the imaging lens system of claim 11, wherein an axial distance between the fifth lens element and the sixth lens element is T56, and a sum of axial distances between all two adjacent lens elements in the imaging lens system is Σ AT, satisfying the following relationship:
0.85<T56/(ΣAT-T56)。
17. the imaging lens system of claim 11, wherein a horizontal displacement distance on an optical axis from an intersection point of the image-side surface of the sixth lens element on the optical axis to a position of a maximum effective diameter of the image-side surface is SAG62, and an optical thickness of the sixth lens element on the optical axis is CT6, which satisfies the following relation:
SAG62/CT6<-1.7。
18. the image capturing lens system of claim 11, wherein an abbe number of at least one of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element having positive refractive power is less than 28.0.
19. The image capturing lens system of claim 11, wherein the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are all made of plastic, and an axial distance between the object-side surface of the first lens element and the image plane is TL, which satisfies the following relationship:
TL<8.0mm。
20. an image capturing device comprising the image capturing lens system as claimed in claim 11 and an electronic photosensitive element.
21. An image capturing lens system, in order from an object side to an image side, comprises: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, wherein the first lens element has positive refractive power, the object-side surface of the first lens element is convex, the second lens element has negative refractive power, the fifth lens element has positive refractive power, at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric, the object-side surface of the sixth lens element is concave, and at least one of the object-side surface and the image-side surface of the sixth lens element is aspheric;
wherein, the total number of the lenses of the image capturing lens system is six, and the sixth lens comprises at least one inflection point;
wherein an axial distance between the fifth lens element and the sixth lens element is T56, a sum of axial distances between all two adjacent lens elements in the image capturing lens system is Σ AT, a focal length of the image capturing lens system is f, a radius of curvature of the object-side surface of the first lens element is R1, an axial distance between the image-side surface of the sixth lens element and the image plane is BL, an axial distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is TD, an axial thickness of the fourth lens element is CT4, an axial thickness of the fifth lens element is CT5, a half of a maximum viewing angle in the image capturing lens system is HFOV, and satisfies the following relationships:
0.30<T56/(ΣAT-T56);
3.30<f/R1<9.50;
0<BL/TD<0.70;
CT4/CT5< 3.0; and
tan(2*HFOV)<1.20。
22. the image capturing lens system of claim 21, wherein an air space is disposed between adjacent lenses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element.
23. The image capturing lens system of claim 21, wherein an axial distance between the image side surface of the sixth lens element and the image plane is BL, an axial distance between the object side surface of the first lens element and the image side surface of the sixth lens element is TD, and they satisfy the following relations:
0<BL/TD<0.30。
24. the image capturing lens system of claim 21, wherein the second lens element has an abbe number of V2, the third lens element has an abbe number of V3, the fifth lens element has an abbe number of V5, and the fourth lens element has an abbe number of V4, satisfying the following relationships:
0.70<(V2+V3+V5)/V4<1.50。
25. the imaging lens system of claim 21, wherein an axial distance between the fifth lens element and the sixth lens element is T56, and a sum of axial distances between all two adjacent lens elements in the imaging lens system is Σ AT, satisfying the following relationship:
0.85<T56/(ΣAT-T56)。
26. the image capturing lens system of claim 21, wherein an abbe number of at least one of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element having positive refractive power is less than 28.0.
27. The image capturing lens system of claim 21, wherein the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are all made of plastic, and an axial distance between the object-side surface of the first lens element and the image plane is TL, which satisfies the following relationship:
TL<8.0mm。
28. an image capturing device comprising the image capturing lens system as claimed in claim 21 and an electronic photosensitive element.
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