CN108828751B - Image capturing lens assembly and image capturing device - Google Patents
Image capturing lens assembly and image capturing device Download PDFInfo
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- CN108828751B CN108828751B CN201811035781.2A CN201811035781A CN108828751B CN 108828751 B CN108828751 B CN 108828751B CN 201811035781 A CN201811035781 A CN 201811035781A CN 108828751 B CN108828751 B CN 108828751B
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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Abstract
The present invention discloses an image capturing lens assembly and an image capturing device, wherein the image capturing lens assembly comprises, in order from an object side to an image side, 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. The first lens element has a concave object-side surface and a concave image-side surface, at least one of the object-side surface and the image-side surface has at least one inflection point, the second lens element has positive refractive power, the third lens element has negative refractive power, the image-side surface of the third lens element is concave, the image-side surface of the sixth lens element is concave, the object-side surface and the image-side surface of the sixth lens element are aspheric, and the image-side surface of the sixth lens element has at least one inflection point. The invention also discloses an image capturing device with the image capturing lens group.
Description
The application is a divisional application, and the application date of the original application is as follows: 9/23/2015; the application numbers are: 201510610695. X; the invention has the name: an image capturing lens assembly, an image capturing device and an electronic device.
Technical Field
The present invention relates to an image capturing lens assembly and an image capturing device, and more particularly, to an image capturing lens assembly and an image capturing device suitable for an electronic device.
Background
In recent years, with the rapid development of miniaturized camera lenses, the demand of a miniature image capturing module is increasing, and the photosensitive elements of a general camera lens are not limited to a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Sensor, and with the advancement of Semiconductor process technology, the pixel size of the photosensitive elements is reduced, and in addition, the development trend of electronic products is to have a good function and a light, thin, short and small appearance, so that the miniaturized camera lens with good imaging quality is really the mainstream in the current market.
The conventional high-pixel miniaturized camera lens mounted on an electronic Device mostly adopts a lens structure with a small number of lenses, but the requirements of the miniaturized camera lens on pixel and imaging quality are promoted due to the prevalence of high-specification mobile devices such as a high-order Smart Phone (Smart Phone), a Wearable Device (Wearable Device), and a Tablet Personal Computer (Tablet Personal Computer), and the existing lens group cannot meet the requirements of higher order. In addition, although the conventional lens arrangement of the optical system can satisfy the miniaturization requirement of the high-specification mobile device, it is difficult to provide a wide angle of view and good aberration correction capability, so that the imaging quality is poor. Therefore, how to provide an optical system with a small size, a wide viewing angle and a high imaging quality is a problem to be solved.
Disclosure of Invention
The present invention provides an image capturing lens assembly and an image capturing device, wherein the image capturing lens assembly includes six lenses. The second lens element with positive refractive power can focus the light converging ability on the second lens element, thereby increasing the range of light entering the image capturing lens assembly to enlarge the field angle. The image side surface of the sixth lens element is concave, which helps to correct peripheral image aberration and further improve image quality. When a specific condition is satisfied, the curvature of the object-side surface of the first lens element helps to moderate the angle change of the incident light, and avoid too strong refractive change to generate too much aberration.
The present invention provides an image capturing lens assembly, sequentially including, from an object side to an image side, 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. The first lens element has a concave object-side surface and a concave image-side surface, at least one of the object-side surface and the image-side surface has at least one inflection point, the second lens element has positive refractive power, the third lens element has negative refractive power, the image-side surface of the third lens element is concave, the image-side surface of the sixth lens element is concave, the object-side surface and the image-side surface of the sixth lens element are aspheric, and the image-side surface of the sixth lens element has at least one inflection point. The total number of the lenses of the image capturing lens assembly is six. The optical length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
the invention provides an image capturing device, which comprises the image capturing lens group and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the image capturing lens group.
The present invention further provides an image capturing lens assembly, sequentially including, from an object side to an image side, 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. At least one of the object-side surface and the image-side surface of the first lens element has at least one inflection point, the second lens element has positive refractive power, the third lens element has negative refractive power, the third lens element has a convex object-side surface and a concave image-side surface, the fourth lens element has a convex image-side surface, the sixth lens element has a convex object-side surface and a concave image-side surface, both the object-side surface and the image-side surface of the sixth lens element are aspheric, and the image-side surface of the sixth lens element has at least one inflection point. The total number of the lenses of the image capturing lens assembly is six. The optical length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
the present invention further provides an image capturing device, which comprises the image capturing lens assembly and an electro-optic sensor disposed on an image plane of the image capturing lens assembly.
The present invention further provides an image capturing lens assembly, sequentially including, from an object side to an image side, 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. The second lens element with positive refractive power has a convex object-side surface and a concave image-side surface, the fifth lens element with negative refractive power has a concave image-side surface, and both the object-side surface and the image-side surface of the sixth lens element are aspheric. The total number of the lenses of the image capturing lens assembly is six. The optical length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
the present invention further provides an image capturing device, which comprises the image capturing lens assembly and an electro-optic sensor disposed on an image plane of the image capturing lens assembly.
When the f/R1 satisfies the above condition, the curvature of the object-side surface of the first lens element helps to make the incident light angle change more moderate, and avoid too strong refractive change to generate too much aberration.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a schematic view of an image capturing apparatus according to a first embodiment of the present invention;
FIG. 2 is a graph showing the spherical aberration, astigmatism and distortion of the first embodiment in order from left to right;
FIG. 3 is a schematic view of an image capturing apparatus according to a second embodiment of the present invention;
FIG. 4 is a graph showing the spherical aberration, astigmatism and distortion of the second embodiment in order from left to right;
FIG. 5 is a schematic view of an image capturing apparatus according to a third embodiment of the present invention;
FIG. 6 is a graph showing the spherical aberration, astigmatism and distortion of the third embodiment from left to right;
FIG. 7 is a schematic view of an image capturing apparatus according to a fourth embodiment of the present invention;
FIG. 8 is a graph showing the spherical aberration, astigmatism and distortion of the fourth embodiment in order from left to right;
FIG. 9 is a schematic view of an image capturing apparatus according to a fifth embodiment of the present invention;
FIG. 10 is a graph showing the spherical aberration, astigmatism and distortion of the fifth embodiment in order from left to right;
FIG. 11 is a schematic view of an image capturing apparatus according to a sixth embodiment of the present invention;
FIG. 12 is a graph showing the spherical aberration, astigmatism and distortion of the sixth embodiment in order from left to right;
FIG. 13 is a schematic view of an image capturing apparatus according to a seventh embodiment of the invention;
FIG. 14 is a graph showing the spherical aberration, astigmatism and distortion in order from left to right for the seventh embodiment;
FIG. 15 is a schematic view of an image capturing apparatus according to an eighth embodiment of the present invention;
FIG. 16 is a graph showing the spherical aberration, astigmatism and distortion of the eighth embodiment in order from left to right;
FIG. 17 is a schematic view of an electronic device according to the present invention;
FIG. 18 is a schematic diagram of another electronic device according to the present invention;
FIG. 19 is a schematic diagram of yet another electronic device according to the present invention.
Wherein the reference numerals
Image capturing device: 10
Aperture ratio of 100: 100, 200, 300, 400, 500, 600, 700, 800
First lens: 110, 210, 310, 410, 510, 610, 710, 810
Image side surface: 112, 212, 312, 412, 512, 612, 712, 812
Second lens: 120, 220, 320, 420, 520, 620, 720, 820
Image side surface: 122, 222, 322, 422, 522, 622, 722, 822
130, 230, 330, 430, 530, 630, 730, 830 of third lens
Image side surface: 132, 232, 332, 432, 532, 632, 732, 832
Object side surfaces 141, 241, 341, 441, 541, 641, 741, 841
Image side surface: 142, 242, 342, 442, 542, 642, 742, 842
Fifth lens element (150, 250, 350, 450, 550, 650, 750, 850)
Object side surfaces 151, 251, 351, 451, 551, 651, 751, 851
Object side surfaces 161, 261, 361, 461, 561, 661, 761, 861
Image side surface: 162, 262, 362, 462, 562, 662, 762, 862
Infrared filtering filter element 170, 270, 370, 470, 570, 670, 770, 870
190, 290, 390, 490, 590, 690, 790, 890 electron-sensitive elements
CT 2: thickness of the second lens on the optical axis
CT 6: thickness of the sixth lens element on the optical axis
f: focal length of image capturing lens assembly
f 1: focal length of the first lens
f 2: focal length of the second lens
f6 focal length of sixth lens
Fno aperture value of image capturing lens set
Half of the maximum viewing angle of an HFOV image capturing lens assembly
ImgH maximum imaging height of image capturing lens assembly
Nmax of refractive indexes of first lens, second lens, third lens, fourth lens, fifth lens and sixth lens
R1 radius of curvature of object-side surface of first lens
R2 radius of curvature of image-side surface of first lens element
R3 radius of curvature of object-side surface of second lens
R4 radius of curvature of image-side surface of second lens element
R5 radius of curvature of object-side surface of third lens
R6 radius of curvature of image-side surface of third lens element
R9 radius of curvature of object-side surface of fifth lens
R10 radius of curvature of image-side surface of fifth lens element
Distance on optical axis from the SD: aperture to the image side surface of the sixth lens
Distance TD between object-side surface of first lens and image-side surface of sixth lens
TL distance from object side surface of first lens to image plane on optical axis
T12: the distance between the first lens and the second lens on the optical axis
T23: the distance between the second lens and the third lens on the optical axis
T34: the distance between the third lens and the fourth lens on the optical axis
T45: the distance between the fourth lens and the fifth lens on the optical axis
T56: the distance between the fifth lens and the sixth lens on the optical axis
V2: abbe number of second lens
V3: abbe number of third lens
V5: abbe number of fifth lens
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the image capturing lens assembly includes, in order from an object side to an image side, 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. The image capturing lens assembly has six lenses.
Any two adjacent lenses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens may have an air space on an optical axis, that is, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens may be six single non-cemented (non-cemented) lenses. Since the process of the cemented lens is more complicated than that of the non-cemented lens, especially the cemented surface of the two lenses needs to have a curved surface with high accuracy so as to achieve high degree of conformity when the two lenses are cemented, and during the cementing process, the shift defect caused by the offset is more likely to affect the overall optical imaging quality. Therefore, the first lens element to the sixth lens element in the image capturing lens assembly can be configured by six single non-cemented lens elements, thereby effectively improving the problems caused by cemented lens elements.
At least one of the object-side surface and the image-side surface of the first lens element has at least one inflection point. Thereby, the aberration of the off-axis field of view is corrected.
The second lens element with positive refractive power has a convex object-side surface. Therefore, the light converging capability of the image capturing lens assembly is favorably concentrated on the second lens, and the range of light entering the image capturing lens assembly can be enlarged to enlarge the view field angle.
The third lens element with negative refractive power has a concave image-side surface. Therefore, the aberration generated by the first lens and the second lens is corrected, so that the imaging quality is improved.
The fourth lens element with positive refractive power has a concave object-side surface and a convex image-side surface. Therefore, the sensitivity and the correction astigmatism are effectively reduced to improve the imaging quality.
The fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface. Therefore, the aberration such as peripheral curvature of the image can be corrected, and the petzval sum can be corrected conveniently to enable the imaging surface to be flat, so that the imaging quality of the off-axis field is improved.
The sixth lens element has a convex object-side surface and a concave image-side surface, and at least one of the object-side surface and the image-side surface has at least one inflection point. Therefore, the method is beneficial to correcting the peripheral aberration of the image so as to further improve the imaging quality.
The optical length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions: -0.60< f/R1< 0.80. Therefore, the curvature of the object side surface of the first lens is beneficial to enabling the refraction angle change of the incident light to be more moderate, and the phenomenon that the refraction change is too strong to generate too much aberration can be avoided. Preferably, it may further satisfy the following condition: -0.50< f/R1< 0.50.
The focal length of the first lens is f1, the focal length of the second lens is f2, and the following conditions are satisfied: -0.50< f2/f1< 0.40. Therefore, the image side of the image capturing lens assembly is provided with enough positive refractive power to balance the refractive power distribution of the object side and the image side of the image capturing lens assembly, thereby effectively shortening the total length of the image capturing lens assembly and simultaneously increasing the image imaging range. Preferably, it may further satisfy the following condition: -0.30< f2/f1< 0.25.
A radius of curvature of the object-side surface of the third lens element is R5, and a radius of curvature of the image-side surface of the third lens element is R6, which satisfy the following conditions: 0< (R5+ R6)/(R5-R6). Therefore, the light path direction of the image capturing lens assembly can be properly configured, and astigmatism generated by the second lens element can be corrected at the same time. Preferably, it may further satisfy the following condition: 1.0< (R5+ R6)/(R5-R6).
The image capturing lens assembly further comprises an aperture. An axial distance between the stop and the image-side surface of the sixth lens element is SD, and 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, which satisfies the following conditions: 0.70< SD/TD < 1.10. Therefore, the total length of the image capturing lens assembly can be shortened and the sufficient relative illumination can be maintained.
The optical length of the image capturing lens assembly is f, the radius of curvature of the object-side surface of the first lens element is R1, and the radius of curvature of the image-side surface of the first lens element is R2, wherein: i f/R1| + | f/R2| < 1.10. Therefore, the surface curvature of the first lens can be configured properly, which is beneficial to reducing the generation of aberration and improving the imaging quality.
The second lens has an abbe number of V2, the third lens has an abbe number of V3, and the fifth lens has an abbe number of V5, which satisfy the following conditions: (V3+ V5)/V2< 1.0. Therefore, the color difference is corrected.
Half of the maximum viewing angle of the image capturing lens assembly is HFOV, which satisfies the following conditions: 38.0[ degrees ] < HFOV <48.0[ degrees ]. Therefore, the problem of image deformation caused by overlarge visual angle can be avoided.
The second lens element has a thickness CT2 along the optical axis, and the sixth lens element has a thickness CT6 along the optical axis, which satisfies the following conditions: 0.80< CT6/CT 2. Therefore, the system configuration is effectively balanced to provide better aberration correction capability.
The fifth lens has an abbe number V5, which satisfies the following condition: v5< 35.0. Therefore, the effect of correcting chromatic aberration is further promoted.
The distance TL from the object-side surface of the first lens element to an imaging plane on the optical axis is, the maximum imaging height of the image capturing lens assembly is ImgH (half of the total length of the diagonal line of the effective sensing area of the electronic photosensitive device), which satisfies the following conditions: TL/ImgH < 1.80. Therefore, the miniaturization of the image capturing lens group is favorably maintained, and the image capturing lens group is more suitable for being carried on a light and thin electronic device.
A radius of curvature of the object-side surface of the fifth lens element is R9, and a radius of curvature of the image-side surface of the fifth lens element is R10, wherein the following conditions are satisfied: -0.4< (R9-R10)/(R9+ R10) <0. This helps to enhance the astigmatism correction effect.
The focal length of the image capturing lens assembly is f, the focal length of the first lens element is f1, and the focal length of the sixth lens element is f6, which satisfies the following conditions: i f/f1| + | f/f6| < 0.50. Therefore, the curvatures of the object-side surface of the first lens element and the image-side surface of the sixth lens element are balanced to avoid excessive aberration, and the symmetry of the image capturing lens assembly is improved to effectively improve the imaging quality.
The optical axis distance between the first lens element and the second lens element is T12, the optical axis distance between the second lens element and the third lens element is T23, the optical axis distance between the third lens element and the fourth lens element is T34, the optical axis distance between the fourth lens element and the fifth lens element is T45, and the optical axis distance between the fifth lens element and the sixth lens element is T56, which satisfies the following conditions: t23< T12< T34; t23< T12< T45; t56< T12< T34; and T56< T12< T45. Therefore, the distance between the lenses can be properly configured, which is helpful for shortening the total length of the image capturing lens assembly to maintain the miniaturization thereof.
A radius of curvature of the object-side surface of the second lens element is R3, and a radius of curvature of the image-side surface of the second lens element is R4, wherein the following conditions are satisfied: (R3+ R4)/(R3-R4) < 0.0. Therefore, the correction effect of the spherical aberration and the astigmatism is improved.
A maximum value among refractive indexes of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens is Nmax, which may satisfy the following condition: nmax < 1.70. Therefore, the refractive index of each lens can be properly adjusted, so that the optical system has more accurate focusing capability.
The distance TL from the object-side surface of the first lens element to an imaging plane on the optical axis may satisfy the following condition: TL <8.0 mm. Therefore, the total length of the image capturing lens assembly can be shortened to maintain miniaturization.
The refractive power of the second lens element can be the strongest (the refractive power of each lens element is the value of the focal length of the image capturing lens assembly divided by the focal length of the respective lens element, and the stronger refractive power means that the value has a larger value in absolute terms). That is, the absolute value of the refractive power of the second lens element is greater than the absolute values of the refractive powers of the first lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element. Therefore, the second lens element can have a positive refractive power with sufficient strength, thereby effectively enlarging the field angle and shortening the total track length of the image capturing lens assembly.
In the image capturing lens assembly disclosed in the present invention, the aperture can be configured as a front aperture or a middle aperture. The front diaphragm means that the diaphragm is arranged between the object to be shot and the first lens, and the middle diaphragm means that the diaphragm is arranged between the first lens and the imaging surface. If the aperture is a front aperture, a longer distance is generated between the Exit Pupil (Exit Pupil) of the image capturing lens group and the image plane, so that the image capturing lens group has a Telecentric (telecentricity) effect, and the image receiving efficiency of a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) of the electronic photosensitive element can be increased; if the aperture is a central aperture, it is helpful to enlarge the field angle of the image capturing lens assembly, so that the image capturing lens assembly has the advantage of a wide-angle lens.
In the image capturing lens assembly disclosed in the present invention, the lens can be made of plastic or glass. When the lens is made of glass, the degree of freedom of the refractive power configuration can be increased. In addition, when the lens is made of plastic, the production cost can be effectively reduced. In addition, an Aspheric Surface (ASP) can be arranged on the surface of the lens, the ASP can be easily made into shapes other than a spherical surface, more control variables are obtained for reducing the aberration, and the number of the lenses required to be used is further reduced, so that the total optical length can be effectively reduced.
In the image capturing lens assembly 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 assembly disclosed in the present invention, the Image Surface (Image Surface) of the Image capturing lens assembly can be a flat Surface or a curved Surface with any curvature, especially a curved Surface with a concave Surface facing the object side, depending on the electro-optic device.
The image capturing lens assembly disclosed in the present invention may further include at least one Stop disposed in front of the first lens element, between the first lens element and the second lens element, or behind the last lens element, wherein the Stop is of a flare Stop (Glare Stop) or a Field Stop (Field Stop) for reducing stray light, thereby improving image quality.
The present invention further provides an image capturing device, which comprises the image capturing lens assembly and an electro-optic sensor disposed on an image plane of the image capturing lens assembly. Preferably, the image capturing device may further include a Barrel (Barrel Member), a Holding Member (Holding Member), or a combination thereof.
Referring to fig. 17, 18 and 19, the image capturing apparatus 10 can be applied to a smart phone (as shown in fig. 17), a tablet computer (as shown in fig. 18), a wearable apparatus (as shown in fig. 19) and the like in many ways. 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 lens assembly of the present invention can be applied to a mobile focusing optical system 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 three-dimensional (3D) image acquisition, digital cameras, mobile devices, tablet computers, intelligent televisions, network monitoring equipment, driving recorders, backing developing devices, motion sensing game machines, wearable devices and the like in many ways. The electronic device disclosed in the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the image capturing device of the present invention.
The following provides a detailed description of the embodiments with reference to the accompanying drawings.
< first embodiment >
Referring to fig. 1 and fig. 2, wherein fig. 1 is a schematic view of an image capturing device according to a first embodiment of the invention, and fig. 2 is a graph of spherical aberration, astigmatism and distortion in the first embodiment from left to right. As shown in fig. 1, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic sensor 190. The image capturing lens assembly 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 infrared-cut Filter (IR-cut Filter)170, and an image plane 180. The electron sensor 190 is disposed on the image plane 180. The image capturing lens assembly has six lenses (110-160). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 110 with positive refractive power has a convex object-side surface 111 and a convex image-side surface 112, which are both aspheric, and the object-side surface 111 has an inflection point.
The second lens element 120 with positive refractive power has a convex object-side surface 121 and a concave image-side surface 122.
The third lens element 130 with negative refractive power has a convex object-side surface 131 and a concave image-side surface 132.
The fourth lens element 140 with positive refractive power has a concave object-side surface 141 and a convex image-side surface 142.
The fifth lens element 150 with negative refractive power has a concave object-side surface 151 and a convex image-side surface 152.
The sixth lens element 160 with positive refractive power has a convex object-side surface 161 and a concave image-side surface 162, which are both aspheric, and the object-side surface 161 and the image-side surface 162 have inflection points.
The ir-cut filter 170 is made of glass, and is disposed between the sixth lens element 160 and the image plane 180 without affecting the focal length of the image capturing lens assembly.
The curve equation of the aspherical surface of each lens described above is as follows:
(ii) a Wherein:
x: the distance between a point on the aspheric surface, which is Y away from the optical axis, and the relative distance between the point and a tangent plane tangent to the intersection point 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; and
ai: the ith order aspheric coefficients.
In the first embodiment of the present image capturing lens assembly, the focal length of the image capturing lens assembly is F, the aperture value (F-number) of the image capturing lens assembly is Fno, and half of the maximum viewing angle of the image capturing lens assembly is HFOV, which has the following values: f 3.74 millimeters (mm), Fno 2.60, HFOV 38.3 degrees (deg.).
A maximum value among refractive indexes of the first lens 110, the second lens 120, the third lens 130, the fourth lens 140, the fifth lens 150, and the sixth lens 160 is Nmax, which satisfies the following condition: nmax is 1.661.
The fifth lens 150 has an abbe number V5, which satisfies the following condition: v5 ═ 20.4.
The second lens 120 has an abbe number of V2, the third lens 130 has an abbe number of V3, and the fifth lens 150 has an abbe number of V5, which satisfy the following conditions: (V3+ V5)/V2 is 0.73.
The optical thickness of the second lens element 120 is CT2, the optical thickness of the sixth lens element 160 is CT6, which satisfies the following conditions: CT6/CT2 equals 1.850.
The focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface 111 of the first lens element is R1, which satisfies the following conditions: f/R1 is 0.13.
The image capturing lens assembly has a focal length f, a radius of curvature of the object-side surface 111 of the first lens element is R1, and a radius of curvature of the image-side surface 112 of the first lens element is R2, wherein: i f/R1| + | f/R2| -0.27.
A radius of curvature of the second lens object-side surface 121 is R3, and a radius of curvature of the second lens image-side surface 122 is R4, which satisfy the following conditions: (R3+ R4)/(R3-R4) — 1.26.
A radius of curvature of the object-side surface 131 of the third lens element is R5, and a radius of curvature of the image-side surface 132 of the third lens element is R6, which satisfy the following conditions: (R5+ R6)/(R5-R6) ═ 4.32.
A radius of curvature of the fifth lens object-side surface 151 is R9, and a radius of curvature of the fifth lens image-side surface 152 is R10, which satisfy the following conditions: (R9-R10)/(R9+ R10) — 0.17.
The focal length of the first lens 110 is f1, and the focal length of the second lens 120 is f2, which satisfies the following conditions: f2/f1 is 0.14.
The focal length of the image capturing lens assembly is f, the focal length of the first lens element 110 is f1, and the focal length of the sixth lens element 160 is f6, which satisfies the following conditions: i f/f1| + | f/f6| -0.20.
An axial distance between the stop 100 and the sixth lens element image-side surface 162 is SD, and an axial distance between the first lens element object-side surface 111 and the sixth lens element image-side surface 162 is TD, which satisfy the following conditions: SD/TD is 0.83.
The distance TL from the object-side surface 111 of the first lens element to the image plane 180 on the optical axis is, the maximum imaging height of the image capturing lens assembly is ImgH, which satisfies the following conditions: TL/ImgH is 1.74.
The distance TL from the object-side surface 111 to the image plane 180 on the optical axis satisfies the following condition: TL 5.33 mm.
The refractive power 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 is the strongest among the refractive powers of the second lens element 120.
The following table one and table two are referred to cooperatively.
In table one, the detailed structural data of the first embodiment of fig. 1 are shown, wherein the units of the radius of curvature, the thickness and the focal length are millimeters (mm), and surfaces 0 to 16 sequentially represent surfaces from an object side to an image side. Table two shows the aspheric data of the first embodiment, where k is the cone coefficient in the aspheric curve equation, and a4 to a16 represent the 4 th to 16 th order aspheric coefficients of each surface. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration graphs of the embodiments, and the definitions of the data in the tables are the same as those of the first and second tables of the first embodiment, which will not be described herein.
< second embodiment >
Referring to fig. 3 and fig. 4, wherein fig. 3 is a schematic view of an image capturing apparatus according to a second embodiment of the invention, and fig. 4 is a graph of spherical aberration, astigmatism and distortion of the second embodiment in order from left to right. As shown in fig. 3, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic device 290. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 210, an aperture stop 200, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260, an ir-cut filter 270 and an image plane 280. The electron sensor 290 is disposed on the image plane 280. The image capturing lens assembly has six lenses (210-260). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 210 with positive refractive power has a convex object-side surface 211 and a convex image-side surface 212, which are both aspheric, and the object-side surface 211 has an inflection point.
The second lens element 220 with positive refractive power has a convex object-side surface 221 and a concave image-side surface 222.
The third lens element 230 with negative refractive power has a convex object-side surface 231 and a concave image-side surface 232.
The fourth lens element 240 with positive refractive power has a convex object-side surface 241 and a convex image-side surface 242.
The fifth lens element 250 with negative refractive power has a concave object-side surface 251 and a convex image-side surface 252.
The sixth lens element 260 with positive refractive power has a convex object-side surface 261 and a concave image-side surface 262, which are both aspheric, and the object-side surface 261 and the image-side surface 262 both have inflection points.
The ir-cut filter 270 is made of glass, and is disposed between the sixth lens element 260 and the image plane 280 without affecting the focal length of the image capturing lens assembly.
Please refer to the following table three and table four.
In the second embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< third embodiment >
Referring to fig. 5 and fig. 6, wherein fig. 5 is a schematic view of an image capturing apparatus according to a third embodiment of the invention, and fig. 6 is a graph showing spherical aberration, astigmatism and distortion in order from left to right in the third embodiment. As shown in fig. 5, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic device 390. The image capturing lens assembly includes, 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 370 and an image plane 380. The electro-optic element 390 is disposed on the image plane 380. The image capturing lens assembly has six lenses (310-360). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 310 with positive refractive power has a convex object-side surface 311 and a concave image-side surface 312, which are both aspheric, and the object-side surface 311 and the image-side surface 312 have inflection points.
The second lens element 320 with positive refractive power has a convex object-side surface 321 and a convex image-side surface 322.
The third lens element 330 with negative refractive power has a concave object-side surface 331 and a concave image-side surface 332.
The fourth lens element 340 with positive refractive power has a concave object-side surface 341 and a convex image-side surface 342.
The fifth lens element 350 with negative refractive power has a concave object-side surface 351 and a convex image-side surface 352.
The sixth lens element 360 with positive refractive power has a convex object-side surface 361 and a concave image-side surface 362, which are both aspheric, and the object-side surface 361 and the image-side surface 362 have inflection points.
The ir-cut filter 370 is made of glass, and is disposed between the sixth lens element 360 and the image plane 380 without affecting the focal length of the image capturing lens assembly.
The refractive power 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 is the strongest among the refractive powers of the second lens element 320.
Please refer to table five and table six below.
In the third embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< fourth embodiment >
Referring to fig. 7 and 8, wherein fig. 7 is a schematic view of an image capturing apparatus according to a fourth embodiment of the invention, and fig. 8 is a graph showing spherical aberration, astigmatism and distortion in the fourth embodiment from left to right. As shown in fig. 7, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic device 490. The image capturing lens assembly 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. The image sensor 490 is disposed on the image plane 480. The image capturing lens assembly comprises six lenses (410-460). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 410 with negative refractive power has a concave object-side surface 411 and a concave image-side surface 412, which are both aspheric, and the image-side surface 312 has an inflection point.
The second lens element 420 with positive refractive power has a convex object-side surface 421 and a convex image-side surface 422.
The third lens element 430 with negative refractive power has a convex object-side surface 431 and a concave image-side surface 432.
The fourth lens element 440 with positive refractive power has a concave object-side surface 441 and a convex image-side surface 442, which are both aspheric.
The fifth lens element 450 with negative refractive power has a concave object-side surface 451 and a convex image-side surface 452.
The sixth lens element 460 with negative refractive power has a convex object-side surface 461 and a concave image-side surface 462, which are both aspheric, and the object-side surface 461 and the image-side surface 462 have inflection points.
The ir-cut filter 470 is made of glass, and is disposed between the sixth lens element 460 and the image plane 480, and does not affect the focal length of the image capturing lens assembly.
The refractive power 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 is the strongest among the refractive powers of the second lens element 420.
Please refer to table seven and table eight below.
In the fourth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< fifth embodiment >
Referring to fig. 9 and 10, fig. 9 is a schematic view of an image capturing apparatus according to a fifth embodiment of the invention, and fig. 10 is a graph showing spherical aberration, astigmatism and distortion in the fifth embodiment from left to right. As shown in fig. 9, the image capturing device includes an image capturing lens assembly (not shown) and an electronic photosensitive element 590. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 510, an aperture stop 500, 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. The electronic photosensitive element 590 is disposed on the image plane 580. The image capturing lens assembly has six lenses (510-560). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 510 with negative refractive power has a concave object-side surface 511 and a concave image-side surface 512, which are both aspheric, and the image-side surface 512 has an inflection point.
The second lens element 520 with positive refractive power has a convex object-side surface 521 and a convex image-side surface 522, both surfaces being aspheric.
The third lens element 530 with negative refractive power has a convex object-side surface 531 and a concave image-side surface 532.
The fourth lens element 540 with positive refractive power has a concave object-side surface 541 and a convex image-side surface 542.
The fifth lens element 550 with negative refractive power has a concave object-side surface 551 and a convex image-side surface 552, both surfaces of which are aspheric.
The sixth lens element 560 with negative refractive power has a convex object-side surface 561 and a concave image-side surface 562, which are both aspheric, and both the object-side surface 561 and the image-side surface 562 have inflection points.
The ir-cut filter 570 is made of glass, and is disposed between the sixth lens element 560 and the image plane 580, and does not affect the focal length of the image capturing lens assembly.
The refractive power 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 is the strongest among the refractive powers of the second lens element 520.
Please refer to table nine and table ten below.
In the fifth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< sixth embodiment >
Referring to fig. 11 and 12, wherein fig. 11 is a schematic view of an image capturing apparatus according to a sixth embodiment of the invention, and fig. 12 is a graph showing spherical aberration, astigmatism and distortion in the sixth embodiment from left to right. As shown in fig. 11, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic device 690. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 610, an aperture stop 600, 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 670 and an image plane 680. The electro-optic device 690 is disposed on the image plane 680. The image capturing lens assembly has six lenses (610-660). Any two adjacent lenses 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 have an air gap therebetween on the optical axis.
The first lens element 610 with negative refractive power has a convex object-side surface 611 and a concave image-side surface 612, which are both aspheric, and both object-side surface 611 and image-side surface 612 have inflection points.
The second lens element 620 with positive refractive power has a convex object-side surface 621 and a convex image-side surface 622, both surfaces being aspheric.
The third lens element 630 with negative refractive power has a convex object-side surface 631 and a concave image-side surface 632, which are both aspheric.
The fourth lens element 640 with negative refractive power has a concave object-side surface 641 and a convex image-side surface 642, which are both aspheric.
The fifth lens element 650 with negative refractive power has a concave object-side surface 651 and a convex image-side surface 652.
The sixth lens element 660 with positive refractive power has a convex object-side surface 661 and a concave image-side surface 662, which are both aspheric, and both the object-side surface 661 and the image-side surface 662 have inflection points.
The ir-cut filter 670 is made of glass, and is disposed between the sixth lens element 660 and the image plane 680 without affecting the focal length of the image capturing lens assembly.
The refractive power 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 is the strongest among the refractive powers of the second lens element 620.
Please refer to the following table eleven and table twelve.
In the sixth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< seventh embodiment >
Referring to fig. 13 and 14, wherein fig. 13 is a schematic view of an image capturing apparatus according to a seventh embodiment of the invention, and fig. 14 is a graph showing spherical aberration, astigmatism and distortion in the seventh embodiment from left to right. As shown in fig. 13, the image capturing device includes an image capturing lens assembly (not shown) and an electronic photosensitive element 790. The image capturing lens assembly includes, in order from an object side to an image side, a first lens element 710, an aperture stop 700, a second lens element 720, a third lens element 730, a fourth lens element 740, a fifth lens element 750, a sixth lens element 760, an ir-cut filter 770 and an image plane 780. The electronic photosensitive element 790 is disposed on the image plane 780. The image capturing lens assembly comprises six lenses (710 and 760). Any two adjacent lenses of the first lens 710, the second lens 720, the third lens 730, the fourth lens 740, the fifth lens 750, and the sixth lens 760 have an air space on the optical axis.
The first lens element 710 with positive refractive power has a convex object-side surface 711 and a convex image-side surface 712, which are both aspheric, and the object-side surface 711 has an inflection point.
The second lens element 720 with positive refractive power has a convex object-side surface 721 and a convex image-side surface 722.
The third lens element 730 with negative refractive power has a convex object-side surface 731 and a concave image-side surface 732.
The fourth lens element 740 with positive refractive power has a concave object-side surface 741 and a convex image-side surface 742, both surfaces being aspheric.
The fifth lens element 750 with negative refractive power has a concave object-side surface 751 and a convex image-side surface 752.
The sixth lens element 760 with negative refractive power has a convex object-side surface 761 and a concave image-side surface 762, which are both aspheric, and the object-side surface 761 and the image-side surface 762 have inflection points.
The ir-cut filter 770 is made of glass and disposed between the sixth lens element 760 and the image plane 780 without affecting the focal length of the image capturing lens assembly.
The refractive power 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 is the strongest among the refractive powers of the second lens element 720.
Please refer to the following thirteen tables and fourteen tables.
In the seventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< eighth embodiment >
Referring to fig. 15 and 16, wherein fig. 15 is a schematic view of an image capturing apparatus according to an eighth embodiment of the present invention, and fig. 16 is a graph showing spherical aberration, astigmatism and distortion in the eighth embodiment from left to right. As shown in fig. 15, the image capturing device includes an image capturing lens assembly (not shown) and an electro-optic device 890. The image capturing lens assembly includes, 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, an ir-cut filter 870 and an image plane 880. The electrophotographic photosensitive member 890 is disposed on the image plane 880. The image capturing lens assembly has six lenses (810-860). Any two adjacent lenses of the first lens 810, the second lens 820, the third lens 830, the fourth lens 840, the fifth lens 850, and the sixth lens 860 have an air space on the optical axis.
The first lens element 810 with negative refractive power has a convex object-side surface 811 and a concave image-side surface 812, which are both aspheric, and the object-side surface 811 and the image-side surface 812 both have inflection points.
The second lens element 820 with positive refractive power has a convex object-side surface 821 and a concave image-side surface 822, which are both aspheric.
The third lens element 830 with positive refractive power has a convex object-side surface 831 and a concave image-side surface 832.
The fourth lens element 840 with positive refractive power has a concave object-side surface 841 and a convex image-side surface 842, both surfaces being aspheric.
The fifth lens element 850 with negative refractive power has a concave object-side surface 851 and a convex image-side surface 852, which are both aspheric.
The sixth lens element 860 with negative refractive power has a convex object-side surface 861 and a concave image-side surface 862, which are both aspheric, and the object-side surface 861 and the image-side surface 862 have inflection points.
The ir-cut filter 870 is made of glass and disposed between the sixth lens element 860 and the image plane 880, and does not affect the focal length of the image capturing lens assembly.
Please refer to table fifteen and table sixteen below.
In the eighth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
The image capturing device can be mounted in the electronic device. The invention uses the image capturing lens group with six lenses. The second lens element with positive refractive power can focus the light converging ability on the second lens element, thereby increasing the range of light entering the image capturing lens assembly to enlarge the field angle. The fifth lens element with negative refractive power can correct peripheral curvature and other aberrations of the image, and is favorable for correcting the Petzval sum to flatten the imaging surface, thereby improving the imaging quality of the off-axis field. The image side surface of the sixth lens element is concave, which helps to correct peripheral image aberration and further improve image quality. When a specific condition is satisfied, the curvature of the object-side surface of the first lens element helps to moderate the angle change of the incident light, and avoid too strong refractive change to generate too much aberration. In addition, it is helpful to dispose enough positive refractive power on the image side of the image capturing lens assembly to balance the refractive power distribution on the object side and the image side of the image capturing lens assembly, thereby effectively reducing the total track length of the image capturing lens assembly and increasing the image imaging range. In addition, the optical path direction of the image capturing lens assembly can be properly configured and the astigmatism generated by the second lens element can be corrected. In summary, the image capturing lens assembly disclosed in the present invention can satisfy the requirements of miniaturization, wide viewing angle and good aberration correction capability at the same time.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (29)
1. An image capturing lens assembly, in order from an object side to an image side comprising: a first lens element with negative refractive power, a second lens element with concave object-side surface and concave image-side surface, a fourth lens element with negative refractive power, a fifth lens element with negative refractive power, a sixth lens element with positive refractive power, a fifth lens element with concave object-side surface and concave image-side surface, and a sixth lens element with negative refractive power, wherein at least one of the object-side surface and the image-side surface of the first lens element has at least one inflection point, the second lens element has positive refractive power, the object-side surface of the second lens element is convex and the image-side surface is convex, the third lens element has negative refractive power, the object-side surface of the third lens element is convex and concave, the fourth lens element has positive refractive power, the fourth lens element has concave object-side surface and convex image-side surface, the fifth lens element has negative refractive power, the fifth lens element has concave object-side surface and convex image-side surface, the sixth lens element has negative refractive power, the sixth lens element has convex object-side surface and concave image-side surface, the object side surface and the image side surface of the sixth lens element are aspheric, and the image side surface of the sixth lens element has at least one inflection point;
wherein the total number of the image capturing lens assembly is six, the focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
2. the image capturing lens assembly of claim 1, further comprising an aperture stop, wherein an air gap is present between any two 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, an axial distance between the aperture stop and the image-side surface of the sixth lens element is SD, and 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, wherein the following requirements are satisfied:
0.70<SD/TD<1.10。
3. the image capturing lens assembly of claim 1, further comprising an aperture disposed between the first lens element and the second lens element.
4. The optical image capturing lens assembly of claim 1, wherein the focal length of the optical image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, wherein the following conditions are satisfied:
-0.50<f/R1<0.50。
5. the optical image capturing lens assembly of claim 1, wherein the focal length of the optical image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, wherein the following conditions are satisfied:
-0.03≤f/R1<0.50。
6. the image capturing lens assembly of claim 1, wherein the radius of curvature of the object-side surface of the second lens element is R3, and the radius of curvature of the image-side surface of the second lens element is R4, wherein:
-0.29≤(R3+R4)/(R3-R4)<0.0。
7. the image capturing lens assembly of claim 1, wherein the radius of curvature of the object-side surface of the third lens element is R5, and the radius of curvature of the image-side surface of the third lens element is R6, wherein:
1.0<(R5+R6)/(R5-R6)。
8. the image capturing lens assembly of claim 1, wherein the first, second, third, fourth, fifth and sixth lenses are all made of plastic material, a maximum refractive index among the first, second, third, fourth, fifth and sixth lenses is Nmax, an axial distance between the object-side surface of the first lens element and an imaging plane is TL, and the following conditions are satisfied:
nmax is more than or equal to 1.640 and less than 1.70; and
TL <8.0 mm.
9. The image capturing lens assembly of claim 1, wherein the refractive power of the second lens element is strongest among 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.
10. An image capturing device, comprising:
the image capturing lens assembly of claim 1; and
an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the image capturing lens assembly.
11. An image capturing lens assembly, in order from an object side to an image side comprising: 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 at least one of an object-side surface and an image-side surface of the first lens element has at least one inflection point, the second lens element has positive refractive power, the object-side surface of the second lens element is convex, the third lens element has negative refractive power, the object-side surface of the third lens element is convex and the image-side surface of the third lens element is concave, the image-side surface of the fourth lens element is convex, the fifth lens element has negative refractive power, the object-side surface of the fifth lens element is concave and the image-side surface of the fifth lens element is convex, the object-side surface of the sixth lens element is convex and the image-side surface of the sixth lens element is concave, the object-side surface and the image-side surface of the sixth lens element are aspheric surfaces, and the object-side surface and the image-side surface of the;
wherein the total number of the image capturing lens assembly is six, the focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
12. the image capturing lens assembly of claim 11, further comprising an aperture stop, wherein an air gap is present between any two 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, an axial distance between the aperture stop and the image-side surface of the sixth lens element is SD, and 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, wherein the following requirements are satisfied:
0.92≤SD/TD<1.10。
13. the image capturing lens assembly of claim 11, further comprising an aperture stop disposed between the first lens element and the second lens element.
14. The image capturing lens assembly of claim 11, wherein the radius of curvature of the object-side surface of the second lens element is R3, and the radius of curvature of the image-side surface of the second lens element is R4, wherein:
-0.29≤(R3+R4)/(R3-R4)<0.0。
15. the optical lens assembly of claim 11, wherein an object-side surface of the fourth lens element is concave.
16. The image capturing lens assembly of claim 11, wherein the first, second, third, fourth, fifth and sixth lenses are all made of plastic material, a maximum refractive index among the first, second, third, fourth, fifth and sixth lenses is Nmax, an axial distance between the object-side surface of the first lens element and an imaging plane is TL, and the following condition is satisfied:
nmax is more than or equal to 1.640 and less than 1.70; and
TL <8.0 mm.
17. The optical lens assembly of claim 11, wherein an air gap is disposed between any two 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, an axial distance between an object-side surface of the first lens element and an imaging plane is TL, a maximum imaging height of the optical lens assembly is ImgH, and the following conditions are satisfied:
TL/ImgH≤1.71。
18. the image capturing lens assembly of claim 11, wherein the refractive power of the second lens element is strongest among 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.
19. The optical lens assembly of claim 11, wherein the focal length of the optical lens assembly is f, the radius of curvature of the object-side surface of the first lens element is R1, and the radius of curvature of the image-side surface of the first lens element is R2, wherein:
|f/R1|+|f/R2|≤1.01。
20. an image capturing device, comprising:
the image capturing lens assembly of claim 11; and
an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the image capturing lens assembly.
21. An image capturing lens assembly, in order from an object side to an image side comprising: 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 second lens element with positive refractive power has a convex object-side surface, the third lens element with negative refractive power has a convex object-side surface and a concave image-side surface, the fifth lens element with negative refractive power has a concave object-side surface and a convex image-side surface, the sixth lens element with a convex object-side surface and a concave image-side surface, the sixth lens element with aspheric object-side surface and image-side surface, and the sixth lens element with inflection points on both the object-side surface and the image-side surface;
wherein the total number of the image capturing lens assembly is six, the focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, which satisfies the following conditions:
-0.60<f/R1<0.80。
22. the image capturing lens assembly of claim 21, further comprising an aperture stop, wherein the aperture stop is disposed between the first lens element and the second lens element.
23. The image capturing lens assembly of claim 21, wherein at least one of the object-side surface and the image-side surface of the first lens element has at least one inflection point, the focal length of the image capturing lens assembly is f, and the radius of curvature of the object-side surface of the first lens element is R1, wherein:
-0.50<f/R1<0.50。
24. the image capturing lens assembly of claim 21, wherein the first, second, third, fourth, fifth and sixth lenses are all made of plastic material, a maximum refractive index among the first, second, third, fourth, fifth and sixth lenses is Nmax, an axial distance between the object-side surface of the first lens element and an imaging plane is TL, and wherein:
nmax < 1.70; and
TL <8.0 mm.
25. The optical lens assembly of claim 21, wherein the focal length of the optical lens assembly is f, the radius of curvature of the object-side surface of the first lens element is R1, and the radius of curvature of the image-side surface of the first lens element is R2, wherein:
|f/R1|+|f/R2|<1.10。
26. the optical image capturing lens assembly of claim 21, wherein the second lens element has an Abbe number V2, the third lens element has an Abbe number V3, and the fifth lens element has an Abbe number V5, wherein the following conditions are satisfied:
(V3+V5)/V2<1.0。
27. the optical lens assembly of claim 21, wherein an air gap is disposed between any two 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, an axial distance between an object-side surface of the first lens element and an imaging plane is TL, a maximum imaging height of the optical lens assembly is ImgH, and the following conditions are satisfied:
TL/ImgH<1.80。
28. the image capturing lens assembly of claim 21, wherein the radius of curvature of the object-side surface of the second lens element is R3, and the radius of curvature of the image-side surface of the second lens element is R4, wherein:
(R3+R4)/(R3-R4)<0.0。
29. an image capturing device, comprising:
the image capturing lens assembly of claim 21; and
an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an imaging surface of the image capturing lens assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811035781.2A CN108828751B (en) | 2015-09-23 | 2015-09-23 | Image capturing lens assembly and image capturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510610695.XA CN106547070B (en) | 2015-09-23 | 2015-09-23 | Image capture microscope group, image-taking device and electronic device |
| CN201811035781.2A CN108828751B (en) | 2015-09-23 | 2015-09-23 | Image capturing lens assembly and image capturing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510610695.XA Division CN106547070B (en) | 2015-09-23 | 2015-09-23 | Image capture microscope group, image-taking device and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI610110B (en) | 2017-04-14 | 2018-01-01 | 大立光電股份有限公司 | Photographing lens assembly, image capturing unit and electronic device |
| KR102458662B1 (en) * | 2017-09-27 | 2022-10-25 | 삼성전자주식회사 | Optical lens assembly and electronic apparatus having the same |
| TWI641864B (en) * | 2018-01-24 | 2018-11-21 | 大立光電股份有限公司 | Photographing lens assembly, image capturing unit and electronic device |
| TWI768498B (en) * | 2020-10-08 | 2022-06-21 | 大立光電股份有限公司 | Image capturing lens assembly, image capturing unit and electronic device |
| CN113156620B (en) * | 2021-04-29 | 2022-04-01 | 西安石油大学 | Super wide angle refraction and diffraction mobile phone lens |
| CN114355576B (en) * | 2022-01-17 | 2023-10-13 | 广东省星聚宇光学股份有限公司 | Optical imaging lens and camera module |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108983397B (en) | 2020-11-27 |
| CN106547070B (en) | 2018-10-09 |
| CN108828751A (en) | 2018-11-16 |
| CN106547070A (en) | 2017-03-29 |
| CN108983397A (en) | 2018-12-11 |
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