CN109633869B - Optical lens, image capturing device and electronic device - Google Patents
Optical lens, image capturing device and electronic device Download PDFInfo
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- CN109633869B CN109633869B CN201910133545.2A CN201910133545A CN109633869B CN 109633869 B CN109633869 B CN 109633869B CN 201910133545 A CN201910133545 A CN 201910133545A CN 109633869 B CN109633869 B CN 109633869B
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Abstract
The invention discloses an optical lens, an image capturing device and an electronic device. The optical 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. The first lens element with negative refractive power has an image-side surface being concave at a paraxial region thereof. The second lens element has positive refractive power. The fourth lens element with positive refractive power has an image-side surface being convex at a paraxial region thereof, and at least one of an object-side surface and the image-side surface thereof is aspheric. The fifth lens element with negative refractive power has an image-side surface being concave at a paraxial region thereof and including at least one convex surface at an off-axis region thereof, and at least one of the object-side surface and the image-side surface thereof is aspheric. The image-side surface of the sixth lens element is concave at the paraxial region and includes at least one convex surface at the off-axis region, and at least one of the object-side surface and the image-side surface of the sixth lens element is aspheric. When a specific condition is satisfied, the sensitivity of the optical lens may be reduced and the viewing angle thereof may be enlarged.
Description
This application is a divisional application of patent applications filed on 2015, 4/2, with application number 201510153031.5, entitled "optical lens, image capturing device, and electronic device".
Technical Field
The present invention relates to an optical lens and an image capturing device, and more particularly, to a miniaturized optical lens and an image capturing device applied to an electronic device.
Background
In recent years, with the rise of electronic products having a photographing function, the demand for optical systems has been increasing. The photosensitive elements of a general optical system are not limited to a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Sensor, and with the refinement of Semiconductor process technology, the pixel size of the photosensitive elements is reduced, and the optical system gradually develops into a high pixel field, so that the requirements for imaging quality are increased.
The conventional optical system mounted on an electronic product mainly adopts a four-piece or five-piece lens structure, but due to the prevalence of high-specification mobile devices such as Smart phones (Smart phones) and Tablet PCs (Tablet PCs), the pixel and imaging quality of the optical system is rapidly increased, and the known optical system cannot meet the requirement of a higher-order photographing system.
In recent years, electronic products are being thinned, and therefore the matched image capturing device is also required to be miniaturized correspondingly, however, the conventional optical lens is difficult to have both the requirement of large viewing angle and short overall length, and therefore is difficult to be mounted on a thin and light electronic device (such as a mobile phone, a portable device, and the like), and at present, a six-piece optical system is further developed, but due to the arrangement of the lenses, the arrangement with proper aberration and relative illumination cannot be obtained under the characteristics of both wide viewing angle and miniaturization, and further, the imaging quality is affected.
Disclosure of Invention
The invention provides an optical lens, an image capturing device and an electronic device, which can enable the image capturing device with wide visual angle and miniaturization to obtain the configuration with proper aberration and relative illumination intensity and the configuration with proper lens shape easily through the configuration mode of lenses in the optical lens.
According to the present invention, an optical 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. The first lens element with negative refractive power has an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and both the object-side surface and the image-side surface thereof are aspheric. The second lens element with positive refractive power has an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, and both the object-side surface and the image-side surface are aspheric. The third lens element with positive refractive power has an object-side surface and an image-side surface which are aspheric. The fourth lens element with positive refractive power has a convex image-side surface at a paraxial region, and both the object-side surface and the image-side surface thereof are aspheric. The fifth lens element with negative refractive power has an object-side surface being concave at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and the image-side surface of the fifth lens element comprises at least one convex surface at an off-axis region thereof, wherein the object-side surface and the image-side surface thereof are aspheric. The sixth lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and the image-side surface of the sixth lens element includes at least one convex surface at an off-axis region thereof, wherein the object-side surface and the image-side surface thereof are aspheric. The total number of the lenses with refractive power in the optical lens is six, the focal length of the first lens element is f1, the focal length of the second lens element is f2, half of the maximum angle of view in the optical lens is HFOV, and the distance between the object-side surface of the first lens element and the image plane on the optical axis is TL, which satisfies the following conditions:
-1.50< | f1|/f2< 4.0; and
TL/sin(HFOV×1.6)<7.0mm。
the present invention further provides an image capturing apparatus, comprising the optical lens of the preceding paragraph and an electronic sensor, wherein the electronic sensor is disposed on an image plane of the optical lens.
According to another aspect of the present invention, an electronic device includes the image capturing device as described in the previous paragraph.
According to another aspect of the present invention, an optical 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. The first lens element with negative refractive power has an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and both the object-side surface and the image-side surface thereof are aspheric. The second lens element with positive refractive power has an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, and both the object-side surface and the image-side surface are aspheric. The third lens element with positive refractive power has an object-side surface and an image-side surface which are aspheric. The fourth lens element with positive refractive power has a convex image-side surface at a paraxial region, and both the object-side surface and the image-side surface thereof are aspheric. The fifth lens element with negative refractive power has an object-side surface being concave at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and the image-side surface of the fifth lens element comprises at least one convex surface at an off-axis region thereof, wherein the object-side surface and the image-side surface thereof are aspheric. The sixth lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and the image-side surface of the sixth lens element includes at least one convex surface at an off-axis region thereof, wherein both the object-side surface and the image-side surface are aspheric. The total number of lenses having refractive power in the optical lens system is six, the focal length of the first lens element is f1, the focal length of the second lens element is f2, the distance between the first lens element and the second lens element on the optical axis is T12, the distance between the third lens element and the fourth lens element on the optical axis is T34, the distance between the fourth lens element and the fifth lens element on the optical axis is T45, and the distance between the fifth lens element and the sixth lens element on the optical axis is T56, which satisfies the following conditions:
-1.50< | f1|/f2< 4.0; and
1.25<T12/(T34+T45+T56)<4.0。
the present invention further provides an image capturing apparatus, comprising the optical lens of the preceding paragraph and an electronic sensor, wherein the electronic sensor is disposed on an image plane of the optical lens.
According to the present invention, an electronic device is further provided, which includes the image capturing device as described in the previous paragraph.
When the | f1|/f2 satisfies the above condition, the refractive power configurations of the first lens element and the second lens element can be properly adjusted, so that the sensitivity of the optical lens system to the surface precision and the like of the first lens element and the second lens element can be reduced, the visual angle can be expanded, and the manufacturing process can be facilitated.
When TL/sin (HFOV x 1.6) satisfies the above condition, the optical lens can further exhibit the characteristics of large viewing angle, short total length, etc., and the miniaturization thereof is effectively maintained.
When T12/(T34+ T45+ T56) satisfies the above condition, it is advantageous to improve the compactness of the lenses disposed between the aperture and the image plane, and it is advantageous to avoid the need of spacer rings and other elements for assistance when the lenses are too spaced apart from each other during assembly, thereby facilitating the close arrangement of the lens assembly.
Drawings
Fig. 1 is a schematic view illustrating an image capturing apparatus according to a first embodiment of the 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 illustrating an image capturing device 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 illustrating 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 in order from left to right;
FIG. 7 is a schematic view illustrating 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 illustrating an image capturing apparatus according to a fifth embodiment of the 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 illustrating an image capturing apparatus according to a sixth embodiment of the invention;
FIG. 12 is a graph showing spherical aberration, astigmatism and distortion curves of the sixth embodiment, in order from left to right;
fig. 13 is a schematic view illustrating an image capturing apparatus according to a seventh embodiment of the invention;
FIG. 14 is a graph showing the spherical aberration, astigmatism and distortion of the seventh embodiment in order from left to right;
FIG. 15 is a diagram illustrating the parameter Sag52 according to the first embodiment of FIG. 1;
FIG. 16 is a schematic view of an electronic device according to an eighth embodiment of the invention;
FIG. 17 is a schematic view of an electronic device according to a ninth embodiment of the invention; and
fig. 18 is a schematic view illustrating an electronic device according to a tenth embodiment of the invention.
[ notation ] to show
An electronic device: 10. 20, 30
An image taking device: 11. 21, 31
Aperture: 100. 200, 300, 400, 500, 600, 700
A first lens: 110. 210, 310, 410, 510, 610, 710
An object-side surface: 111. 211, 311, 411, 511, 611, 711
Image-side surface: 112. 212, 312, 412, 512, 612, 712
A second lens: 120. 220, 320, 420, 520, 620, 720
An object-side surface: 121. 221, 321, 421, 521, 621, 721
Image-side surface: 122. 222, 322, 422, 522, 622, 722
A third lens: 130. 230, 330, 430, 530, 630, 730
An object-side surface: 131. 231, 331, 431, 531, 631, 731
Image-side surface: 132. 232, 332, 432, 532, 632, 732
A fourth lens: 140. 240, 340, 440, 540, 640, 740
An object-side surface: 141. 241, 341, 441, 541, 641, 741
Image-side surface: 142. 242, 342, 442, 542, 642, 742
A fifth lens: 150. 250, 350, 450, 550, 650, 750
An object-side surface: 151. 251, 351, 451, 551, 651, 751
Image-side surface: 152. 252, 352, 452, 552, 652, 752
A sixth lens: 160. 260, 360, 460, 560, 660, 760
An object-side surface: 161. 261, 361, 461, 561, 661, 761
Image-side surface: 162. 262, 362, 462, 562, 662, 762
Infrared ray filtering filter element: 170. 270, 370, 470, 570, 670, 770
Imaging surface: 180. 280, 380, 480, 580, 680, 780
An electron-sensitive element: 190. 290, 390, 490, 590, 690, 790
f: focal length of optical lens
Fno: aperture value of optical lens
HFOV: half of maximum viewing angle in optical lens
N1: refractive index of the first lens
N2: refractive index of the second lens
N3: refractive index of third lens
N4: refractive index of fourth lens
N5: refractive index of fifth lens
N6: refractive index of sixth lens
Nmax: the largest of N1, N2, N3, N4, N5 and N6
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
TL: the distance from the object side surface of the first lens element to the image plane on the optical axis
CT 1: thickness of the first lens on the optical axis
CT 2: thickness of the second lens on the optical axis
CT 3: thickness of the third lens on the optical axis
CT 4: thickness of the fourth lens on the optical axis
CT 5: thickness of the fifth lens element on the optical axis
CT 6: thickness of the sixth lens element on the optical axis
Sag 52: the horizontal displacement from the intersection point of the image side surface of the fifth lens on the optical axis to the maximum effective radius position of the image side surface of the fifth lens on the optical axis
R11: radius of curvature of object-side surface of sixth lens element
f 1: focal length of the first lens
f 2: focal length of the second lens
f 3: focal length of the third lens
f 4: focal length of the fourth lens
f 5: focal length of fifth lens
f 6: focal length of sixth lens
Detailed Description
An optical lens 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, wherein the number of the lens elements having refractive power in the optical lens is six, and a distance is provided between any two adjacent lens elements having refractive power.
Any two adjacent lenses with refractive power 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 optical lens assembly of the front section may have a spacing distance therebetween; that is, the optical lens has six single non-cemented lenses. Since the process of bonding the lens is more complicated than that of non-bonding lens, especially the bonding surface of the two lenses needs to have a curved surface with high accuracy so as to achieve high degree of adhesion when the two lenses are bonded, and the poor degree of adhesion caused by deviation may occur during the bonding process, which affects the overall optical imaging quality. Therefore, in the optical lens of the present invention, a distance is formed between any two adjacent lenses with refractive power, so that the problem caused by lens adhesion can be effectively solved.
The first lens element with negative refractive power has an image-side surface being concave at a paraxial region thereof. Therefore, the visual angle of the optical lens can be effectively enlarged, and the image capturing range is enlarged.
The second lens element with positive refractive power has an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region. Therefore, the positive refractive power of the optical lens can be provided, astigmatism can be corrected to improve the imaging quality, and the total track length of the optical lens can be shortened.
The third lens element with positive refractive power can further shorten the total track length of the optical lens and maintain its miniaturization.
The fourth lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof, and an object-side surface comprising at least one concave surface at an off-axis region thereof, and an image-side surface being convex at a paraxial region thereof. Therefore, the sensitivity of the optical lens can be reduced, the incident angle of off-axis field rays can be effectively suppressed, and the response efficiency of the electronic photosensitive element is improved.
The fifth lens element with negative refractive power has a concave image-side surface at a paraxial region thereof and at least one convex image-side surface at an off-axis region thereof. Therefore, the aberration of the optical lens at the position close to the optical axis and the off-axis position can be corrected, and the imaging quality is effectively improved.
The sixth lens element with positive refractive power has an object-side surface being convex at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, and the image-side surface of the sixth lens element includes at least one convex surface at an off-axis region thereof. Therefore, the Principal Point (Principal Point) of the optical lens can be far away from the image side end, which is beneficial to shortening the back focal length to maintain miniaturization, and can effectively correct the aberration at the off-axis position, thereby further improving the overall imaging quality.
The focal length of the first lens is f1, the focal length of the second lens is f2, and the following conditions are satisfied: -1.50< | f1|/f2< 4.0. Therefore, the refractive power configuration of the first lens element and the second lens element can be properly regulated, the sensitivity of the optical lens to the surface precision and the like of the first lens element and the second lens element can be reduced, the visual angle can be expanded, and the manufacturing is facilitated. Preferably, the following conditions are satisfied: -0.70< | f1|/f2< 1.80. More preferably, the following conditions may be satisfied: -0.20< | f1|/f2< 1.50. More preferably, the following conditions are satisfied: -0.20< | f1|/f2< 1.0.
The distance between the first lens element and the second lens element is T12, and the distance between the second lens element and the third lens element is T23, which satisfies the following conditions: 1.0< T12/T23. Therefore, the first lens and the second lens have enough space, so that the first lens and the second lens or the second lens and the third lens are prevented from colliding during assembly, the space of the lens group can be effectively utilized, the wide visual angle and the miniaturization are realized, and the imaging quality is good. Preferably, the following conditions are satisfied: 1.40< T12/T23.
The focal length of the fourth lens is f4, and the focal length of the sixth lens is f6, which satisfies the following conditions: 0< f6/f4< 4.0. Therefore, the refractive power configuration of the optical lens is beneficial to shortening the total track length and maintaining the miniaturization of the optical lens.
Half of the maximum viewing angle in the optical lens is HFOV, and the distance between the object-side surface of the first lens element and the image plane on the optical axis is TL, which satisfies the following conditions: 1.30< tan (hfov); and TL/sin (HFOV x 1.6) <7.0 mm. Therefore, the optical lens can show the characteristics of large visual angle, short total length and the like, and effectively maintains the miniaturization of the optical lens.
The distance between the first lens element and the second lens element on the optical axis is T12, the distance between the third lens element and the fourth lens element on the optical axis is T34, the distance between the fourth lens element and the fifth lens element on the optical axis is T45, and the distance between the fifth lens element and the sixth lens element on the optical axis is T56, which satisfies the following conditions: 1.25< T12/(T34+ T45+ T56) < 4.0. Therefore, the compactness of the lens arranged between the aperture and the imaging surface is favorably improved, the lens can be prevented from being assisted by elements such as a Spacer ring (Spacer) due to too large mutual distance during assembly, and the close arrangement of the lens group is favorably realized.
The optical axis thickness of the first lens element is CT1, the optical axis thickness of the second lens element is CT2, the optical axis thickness of the third lens element is CT3, the optical axis thickness of the fourth lens element is CT4, and the optical axis thickness of the sixth lens element is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6. Therefore, the manufacturing and the assembly of the lens are facilitated, and the optical lens has good imaging quality.
The optical lens has a focal length f and a radius of curvature of the object-side surface of the sixth lens element is R11, which satisfies the following conditions: 0< R11/f < 1.40. Therefore, the aberration generated by the fifth lens can be corrected, and the system can obtain better imaging quality. Preferably, the following conditions are satisfied: 0< R11/f < 1.0.
The axial thickness of the fifth lens element is CT5, and the axial horizontal displacement of the maximum effective radius from the intersection of the image-side surface of the fifth lens element to the image-side surface of the fifth lens element is Sag52 (the horizontal displacement is positive in the image-side direction and negative in the object-side direction), which satisfies the following conditions: 4.0< CT5/| Sag52 |. Therefore, the shape of the lens is suitable for facilitating manufacturing and molding, and the defect of poor molding is reduced.
The refractive index of the first lens is N1, the refractive index of the second lens is N2, the refractive index of the third lens is N3, the refractive index of the fourth lens is N4, the refractive index of the fifth lens is N5, the refractive index of the sixth lens is N6, wherein the largest one of N1, N2, N3, N4, N5 and N6 is Nmax, and the following conditions are met: 1.60< Nmax < 1.70. Therefore, the lens is beneficial to the proper configuration of lens materials, and the generation of aberration can be effectively reduced.
The focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, which satisfy the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |. Therefore, the refractive power in the optical lens is properly configured, which is beneficial to correcting the aberration.
In the optical lens provided by the invention, the material of the lens can be plastic or glass. When the lens is made of plastic, the production cost can be effectively reduced. In addition, when the lens is made of glass, the degree of freedom of the refractive power configuration of the optical lens can be increased. In addition, the object-side surface and the image-side surface of the optical lens can be Aspheric Surfaces (ASP), which can be easily made into shapes other than spherical surfaces to obtain more control variables for reducing the aberration and further reducing the number of lenses used, thereby effectively reducing the total track length of the optical lens.
In addition, in the optical lens provided by the invention, if the lens surface is convex and the position of the convex surface is not defined, the lens surface is convex at a position close to the optical axis; 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. In the optical lens system provided by the present invention, if the lens element has positive refractive power or negative refractive power, or the focal length of the lens element, the refractive power or the focal length of the lens element at the paraxial region of the lens element is referred to.
In addition, in the optical lens of the invention, at least one diaphragm can be arranged according to requirements to reduce stray light, which is beneficial to improving the image quality.
The image plane of the optical lens of the present invention may be a plane or a curved plane with any curvature, especially a curved plane with a concave surface facing the object side, depending on the corresponding electronic photosensitive element.
In the optical lens system of the present invention, the stop arrangement may be a front stop, i.e. the stop is disposed between the object and the first lens, or a middle stop, i.e. the stop is disposed between the first lens and the image plane. If the diaphragm is a front diaphragm, a longer distance can be generated between the Exit Pupil (Exit Pupil) of the optical lens and the imaging surface, so that the optical lens 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 diaphragm is arranged in the middle, the wide-angle lens is beneficial to enlarging the angle of view of the system, and the optical lens has the advantage of a wide-angle lens.
The optical lens of the invention can also be applied to electronic devices such as three-dimensional (3D) image capturing, digital cameras, mobile products, digital flat panels, smart televisions, network monitoring equipment, motion sensing game machines, automobile recorders, backing-up developing devices, wearable products and the like in many ways.
The invention provides an image capturing device, comprising the optical lens and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the optical lens. By the lens arrangement mode in the optical lens, the image capturing device with wide view angle and miniaturization can obtain the arrangement with proper aberration and relative illumination intensity, and the arrangement with proper lens shape can be obtained easily. Preferably, the image capturing device may further include a Barrel (Barrel Member), a Holder (Holder Member), or a combination thereof.
The invention provides an electronic device comprising the image capturing device. Therefore, the imaging quality is improved. Preferably, the electronic device may further include a Control Unit (Control Unit), a Display Unit (Display), a Storage Unit (Storage Unit), a Random Access Memory (RAM), or a combination thereof.
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 diagram 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 of the first embodiment in order from left to right. As shown in fig. 1, the image capturing device of the first embodiment includes an optical lens (not numbered) and an electronic photosensitive element 190. The optical lens includes, in order from an object side to an image side, a first lens element 110, a second lens element 120, an aperture stop 100, 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 the electro-optic sensor 190 is disposed on the image plane 180 of the optical lens, wherein the optical lens includes six lens elements (110 and 160) having refractive power, and a distance is provided between any two adjacent lens elements having refractive power.
The first lens element 110 with negative refractive power has an object-side surface 111 being convex in a paraxial region thereof and an image-side surface 112 being concave in a paraxial region thereof.
The second lens element 120 with negative refractive power has an object-side surface 121 being convex in a paraxial region thereof and an image-side surface 122 being concave in a paraxial region thereof.
The third lens element 130 with positive refractive power has an object-side surface 131 being convex in a paraxial region thereof and an image-side surface 132 being convex in a paraxial region thereof.
The fourth lens element 140 with positive refractive power has an object-side surface 141 being convex in a paraxial region thereof and an image-side surface 142 being convex in a paraxial region thereof. In addition, the object-side surface 141 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 150 with negative refractive power has an object-side surface 151 being concave in a paraxial region thereof and an image-side surface 152 being concave in a paraxial region thereof. In addition, the image-side surface 152 of the fifth lens element includes at least one convex surface at an off-axis position.
The sixth lens element 160 with positive refractive power has an object-side surface 161 being convex in a paraxial region thereof and an image-side surface 162 being concave in a paraxial region thereof. In addition, the sixth lens element has an image-side surface 162 with at least one convex surface in an off-axis direction.
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 optical lens.
The curve equation of the aspherical surface of each lens described above is as follows:
wherein:
x: the distance between the point on the aspheric surface, which is Y from the optical axis, and the relative distance between the point and the tangent plane of the intersection point tangent to 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 optical lens of the first embodiment, the focal length of the optical lens is f, the aperture value (f-number) of the optical lens is Fno, and half of the maximum viewing angle in the optical lens is HFOV, and the values thereof are as follows: f is 1.00 mm; fno 2.15; and HFOV 63.5 degrees.
In the optical lens of the first embodiment, half of the maximum angle of view in the optical lens is HFOV, which satisfies the following condition: tan (hfov) ═ 2.01.
In the optical lens of the first embodiment, the refractive index of the first lens 110 is N1, the refractive index of the second lens 120 is N2, the refractive index of the third lens 130 is N3, the refractive index of the fourth lens 140 is N4, the refractive index of the fifth lens 150 is N5, and the refractive index of the sixth lens 160 is N6, where the largest of N1, N2, N3, N4, N5, and N6 is Nmax, which satisfies the following conditions: nmax is 1.633.
In the optical lens assembly of the first embodiment, the distance between the first lens element 110 and the second lens element 120 on the optical axis is T12, the distance between the second lens element 120 and the third lens element 130 on the optical axis is T23, the distance between the third lens element 130 and the fourth lens element 140 on the optical axis is T34, the distance between the fourth lens element 140 and the fifth lens element 150 on the optical axis is T45, and the distance between the fifth lens element 150 and the sixth lens element 160 on the optical axis is T56, which satisfies the following conditions: T12/T23 ═ 1.85; and T12/(T34+ T45+ T56) 1.51.
In the optical lens system of the first embodiment, half of the maximum field angle in the optical lens system is HFOV, and the distance from the object-side surface 111 of the first lens element to the image plane 180 on the optical axis is TL, which satisfies the following conditions: TL/sin (HFOV x 1.6) ═ 4.30 mm.
Referring to FIG. 15, a schematic diagram of the parameter Sag52 according to the first embodiment of FIG. 1 is shown. As can be seen from fig. 15, the horizontal displacement along the optical axis from the intersection of the image-side surface 152 of the fifth lens element to the maximum effective radial position of the image-side surface 152 of the fifth lens element is Sag52, and the optical axis thickness of the fifth lens element 150 is CT5, which satisfies the following conditions: CT5/| Sag52| -7.18.
In the optical lens of the first embodiment, the focal length of the optical lens is f, and the curvature radius of the object-side surface 161 of the sixth lens element is R11, which satisfies the following conditions: r11/f is 0.56.
In the optical lens of the first embodiment, 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: i f1 i/f 2-0.04.
In the optical lens of the first embodiment, the focal length of the fourth lens 140 is f4, and the focal length of the sixth lens 160 is f6, which satisfies the following conditions: f6/f4 is 1.06.
In the optical lens system of the first embodiment, the thickness of the first lens element 110 on the optical axis is CT1, the thickness of the second lens element 120 on the optical axis is CT2, the thickness of the third lens element 130 on the optical axis is CT3, the thickness of the fourth lens element 140 on the optical axis is CT4, and the thickness of the sixth lens element 160 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens of the first embodiment, the focal length of the first lens 110 is f1, the focal length of the second lens 120 is f2, the focal length of the third lens 130 is f3, the focal length of the fourth lens 140 is f4, the focal length of the fifth lens 150 is f5, and the focal length of the sixth lens 160 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
The following list I and list II 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 mm, and the surfaces 0-16 sequentially represent the surfaces from the object side to the image side. Table II shows aspheric data of the first embodiment, where k represents the cone coefficients in the aspheric curve equation, and A4-A16 represents 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 is not repeated herein.
< second embodiment >
Referring to fig. 3 and fig. 4, wherein fig. 3 is a schematic diagram of an image capturing device 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 of the second embodiment includes an optical lens (not numbered) and an electronic photosensitive element 290. The optical lens element includes, in order 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 the electronic sensing element 290 is disposed on the image plane 280 of the optical lens element, wherein the lens element with refractive power in the optical lens element is six lens elements (210 and 260), and a distance is provided between any two adjacent lens elements with refractive power.
The first lens element 210 with negative refractive power has an object-side surface 211 being convex in a paraxial region thereof and an image-side surface 212 being concave in a paraxial region thereof.
The second lens element 220 with positive refractive power has an object-side surface 221 being convex in a paraxial region thereof and an image-side surface 222 being concave in a paraxial region thereof.
The third lens element 230 with positive refractive power has an object-side surface 231 being convex in a paraxial region thereof and an image-side surface 232 being convex in a paraxial region thereof.
The fourth lens element 240 with positive refractive power has an object-side surface 241 being concave in a paraxial region thereof and an image-side surface 242 being convex in a paraxial region thereof. In addition, the object-side surface 241 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 250 with negative refractive power has an object-side surface 251 being concave in a paraxial region thereof and an image-side surface 252 being concave in a paraxial region thereof. In addition, the image-side surface 252 of the fifth lens element includes at least one convex surface at an off-axis position.
The sixth lens element 260 with positive refractive power has an object-side surface 261 being convex in a paraxial region thereof and an image-side surface 262 being concave in a paraxial region thereof. In addition, the image-side surface 262 of the sixth lens element includes at least one convex surface at an off-axis position.
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 optical lens.
The following third and fourth tables are referred to in combination.
In the second embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be calculated by matching table three and table four:
in addition, in the optical lens system of the second embodiment, the thickness of the first lens element 210 on the optical axis is CT1, the thickness of the second lens element 220 on the optical axis is CT2, the thickness of the third lens element 230 on the optical axis is CT3, the thickness of the fourth lens element 240 on the optical axis is CT4, and the thickness of the sixth lens element 260 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens of the second embodiment, the focal length of the first lens 210 is f1, the focal length of the second lens 220 is f2, the focal length of the third lens 230 is f3, the focal length of the fourth lens 240 is f4, the focal length of the fifth lens 250 is f5, and the focal length of the sixth lens 260 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< third embodiment >
Referring to fig. 5 and fig. 6, wherein fig. 5 is a schematic diagram of an image capturing apparatus according to a third embodiment of the present invention, and fig. 6 is a graph of spherical aberration, astigmatism and distortion of the third embodiment in order from left to right. As shown in fig. 5, the image capturing device of the third embodiment includes an optical lens (not labeled) and an electronic photosensitive element 390. The optical lens element includes, in order from an object side to an image side, a first lens element 310, a second lens element 320, an aperture stop 300, 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 the electro-optic sensor element 390 is disposed on the image plane 380 of the optical lens element, wherein the optical lens element has six lens elements (310 and 360), and a distance is provided between any two adjacent lens elements.
The first lens element 310 with negative refractive power has an object-side surface 311 being convex in a paraxial region thereof and an image-side surface 312 being concave in a paraxial region thereof.
The second lens element 320 with positive refractive power has an object-side surface 321 being convex in a paraxial region thereof and an image-side surface 322 being concave in a paraxial region thereof.
The third lens element 330 with positive refractive power has an object-side surface 331 being convex in a paraxial region thereof and an image-side surface 332 being convex in a paraxial region thereof.
The fourth lens element 340 with positive refractive power has an object-side surface 341 being convex in a paraxial region thereof and an image-side surface 342 being convex in a paraxial region thereof. In addition, the object-side surface 341 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 350 with negative refractive power has an object-side surface 351 being concave in a paraxial region thereof and an image-side surface 352 being concave in a paraxial region thereof. In addition, the image-side surface 352 of the fifth lens element includes at least one convex surface at an off-axis position.
The sixth lens element 360 with positive refractive power has an object-side surface 361 being convex in a paraxial region thereof and an image-side surface 362 being concave in a paraxial region thereof. In addition, the sixth lens element image-side surface 362 includes at least one convex surface at an off-axis position.
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 optical lens.
See also 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 following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be derived by matching table five and table six:
in addition, in the optical lens system of the third embodiment, the thickness of the first lens element 310 on the optical axis is CT1, the thickness of the second lens element 320 on the optical axis is CT2, the thickness of the third lens element 330 on the optical axis is CT3, the thickness of the fourth lens element 340 on the optical axis is CT4, and the thickness of the sixth lens element 360 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens system of the third embodiment, the focal length of the first lens 310 is f1, the focal length of the second lens 320 is f2, the focal length of the third lens 330 is f3, the focal length of the fourth lens 340 is f4, the focal length of the fifth lens 350 is f5, and the focal length of the sixth lens 360 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< fourth embodiment >
Referring to fig. 7 and 8, wherein fig. 7 is a schematic diagram of an image capturing apparatus according to a fourth embodiment of the invention, and fig. 8 is a graph of spherical aberration, astigmatism and distortion of the fourth embodiment in order from left to right. As shown in fig. 7, the image capturing apparatus of the fourth embodiment includes an optical lens (not shown) and an electronic photosensitive element 490. The optical lens element includes, in order from an object side to an image side, a first lens element 410, a second lens element 420, an aperture stop 400, 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 the electro-optic sensor 490 is disposed on the image plane 480 of the optical lens element, wherein the optical lens element has six lens elements (410 and 460), and a distance is provided between any two adjacent lens elements.
The first lens element 410 with negative refractive power has an object-side surface 411 being convex in a paraxial region thereof and an image-side surface 412 being concave in a paraxial region thereof.
The second lens element 420 with positive refractive power has an object-side surface 421 being convex in a paraxial region thereof and an image-side surface 422 being concave in a paraxial region thereof.
The third lens element 430 with positive refractive power has an object-side surface 431 being convex in a paraxial region thereof and an image-side surface 432 being convex in a paraxial region thereof.
The fourth lens element 440 with positive refractive power has an object-side surface 441 being convex in a paraxial region thereof and an image-side surface 442 being convex in a paraxial region thereof. In addition, the object-side surface 441 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 450 with negative refractive power has an object-side surface 451 being concave in a paraxial region thereof and an image-side surface 452 being concave in a paraxial region thereof. In addition, the image-side surface 452 of the fifth lens element includes at least one convex surface at an off-axis position.
The sixth lens element 460 with positive refractive power has an object-side surface 461 being convex in a paraxial region thereof and an image-side surface 462 being concave in a paraxial region thereof. In addition, the sixth lens element image-side surface 462 includes at least one convex surface at an off-axis position.
The ir-cut filter 470 is made of glass, and is disposed between the sixth lens element 460 and the image plane 480 without affecting the focal length of the optical lens.
See also 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 following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be derived by matching table seven and table eight:
in addition, in the optical lens system of the fourth embodiment, the thickness of the first lens element 410 on the optical axis is CT1, the thickness of the second lens element 420 on the optical axis is CT2, the thickness of the third lens element 430 on the optical axis is CT3, the thickness of the fourth lens element 440 on the optical axis is CT4, and the thickness of the sixth lens element 460 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens system of the fourth embodiment, the focal length of the first lens 410 is f1, the focal length of the second lens 420 is f2, the focal length of the third lens 430 is f3, the focal length of the fourth lens 440 is f4, the focal length of the fifth lens 450 is f5, and the focal length of the sixth lens 460 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< fifth embodiment >
Referring to fig. 9 and 10, fig. 9 is a schematic diagram illustrating an image capturing device according to a fifth embodiment of the invention, and fig. 10 is a graph illustrating spherical aberration, astigmatism and distortion of the fifth embodiment in order from left to right. As shown in fig. 9, the image capturing device of the fifth embodiment includes an optical lens (not numbered) and an electronic photosensitive element 590. The optical lens element includes, in order from an object side to an image side, a first lens element 510, a second lens element 520, an aperture stop 500, 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 the electro-optic sensor 590 is disposed on the image plane 580 of the optical lens element, wherein the optical lens element has six lens elements (510 and 560), and a distance is provided between any two adjacent lens elements.
The first lens element 510 with negative refractive power has an object-side surface 511 being convex in a paraxial region thereof and an image-side surface 512 being concave in a paraxial region thereof.
The second lens element 520 with positive refractive power has an object-side surface 521 being convex in a paraxial region thereof and an image-side surface 522 being concave in a paraxial region thereof.
The third lens element 530 with positive refractive power has an object-side surface 531 being convex in a paraxial region thereof and an image-side surface 532 being convex in a paraxial region thereof.
The fourth lens element 540 with positive refractive power has an object-side surface 541 being convex in a paraxial region thereof and an image-side surface 542 being convex in a paraxial region thereof. In addition, the object-side surface 541 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 550 with negative refractive power has an object-side surface 551 which is concave in a paraxial region thereof and an image-side surface 552 which is concave in a paraxial region thereof. In addition, the image-side surface 552 of the fifth lens element includes at least one convex surface at an off-axis position.
The sixth lens element 560 with positive refractive power has an object-side surface 561 being convex in a paraxial region thereof and an image-side surface 562 being concave in a paraxial region thereof. In addition, the sixth lens element side surface 562 comprises at least one convex surface off-axis.
The ir-cut filter 570 is made of glass, and is disposed between the sixth lens element 560 and the image plane 580 without affecting the focal length of the optical lens.
Reference is again made 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 following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be derived from tables nine and ten:
in addition, in the optical lens system of the fifth embodiment, the thickness of the first lens element 510 on the optical axis is CT1, the thickness of the second lens element 520 on the optical axis is CT2, the thickness of the third lens element 530 on the optical axis is CT3, the thickness of the fourth lens element 540 on the optical axis is CT4, and the thickness of the sixth lens element 560 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens system of the fifth embodiment, the focal length of the first lens 510 is f1, the focal length of the second lens 520 is f2, the focal length of the third lens 530 is f3, the focal length of the fourth lens 540 is f4, the focal length of the fifth lens 550 is f5, and the focal length of the sixth lens 560 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< sixth embodiment >
Referring to fig. 11 and 12, wherein fig. 11 is a schematic diagram illustrating an image capturing device according to a sixth embodiment of the invention, and fig. 12 is a graph illustrating spherical aberration, astigmatism and distortion in the sixth embodiment from left to right. As shown in fig. 11, the image capturing device of the sixth embodiment includes an optical lens (not labeled) and an electronic photosensitive element 690. The optical lens element includes, in order from an object side to an image side, a first lens element 610, a second lens element 620, an aperture stop 600, 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 electro-optic device 690 is disposed on the image plane 680 of the optical lens element, wherein the optical lens element has six lens elements (610 and 660), and a distance is provided between any two adjacent lens elements having refractive power.
The first lens element 610 with negative refractive power has an object-side surface 611 being convex in a paraxial region thereof and an image-side surface 612 being concave in the paraxial region thereof.
The second lens element 620 with positive refractive power has an object-side surface 621 being convex in a paraxial region thereof and an image-side surface 622 being concave in a paraxial region thereof.
The third lens element 630 with positive refractive power has an object-side surface 631 being concave in a paraxial region thereof and an image-side surface 632 being convex in a paraxial region thereof.
The fourth lens element 640 with positive refractive power has an object-side surface 641 being convex in a paraxial region thereof and an image-side surface 642 being convex in a paraxial region thereof. In addition, the object-side surface 641 of the fourth lens element includes at least one concave surface on the off-axis.
The fifth lens element 650 with negative refractive power has an object-side surface 651 being concave in a paraxial region thereof and an image-side surface 652 being concave in a paraxial region thereof. Additionally, the fifth lens image-side surface 652 comprises at least one convex surface at an off-axis position.
The sixth lens element 660 with positive refractive power has an object-side surface 661 being convex in a paraxial region thereof and an image-side surface 662 being concave in a paraxial region thereof. In addition, the sixth lens element image-side surface 662 includes at least one convex surface at an off-axis position.
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 optical lens.
Reference is again made 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 following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be derived from table eleven and table twelve:
in addition, in the optical lens system of the sixth embodiment, the thickness of the first lens element 610 on the optical axis is CT1, the thickness of the second lens element 620 on the optical axis is CT2, the thickness of the third lens element 630 on the optical axis is CT3, the thickness of the fourth lens element 640 on the optical axis is CT4, and the thickness of the sixth lens element 660 on the optical axis is CT6, which satisfy the following conditions: CT1< CT 2; CT1< CT 3; CT1< CT 4; and CT1< CT 6.
In the optical lens of the sixth embodiment, the focal length of the first lens 610 is f1, the focal length of the second lens 620 is f2, the focal length of the third lens 630 is f3, the focal length of the fourth lens 640 is f4, the focal length of the fifth lens 650 is f5, and the focal length of the sixth lens 660 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< seventh embodiment >
Referring to fig. 13 and 14, wherein fig. 13 is a schematic diagram of an image capturing apparatus according to a seventh embodiment of the invention, and fig. 14 is a graph of spherical aberration, astigmatism and distortion of the seventh embodiment sequentially from left to right. As shown in fig. 13, the image capturing apparatus of the seventh embodiment includes an optical lens (not numbered) and an electronic photosensitive element 790. The optical lens element 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 the electro-optic sensing element 790 is disposed on the image plane 780 of the optical lens element, wherein the optical lens element has six lens elements (710 and 760), and a distance is provided between any two adjacent lens elements.
The first lens element 710 with negative refractive power has an object-side surface 711 being convex in a paraxial region thereof and an image-side surface 712 being concave in a paraxial region thereof.
The second lens element 720 with positive refractive power has an object-side surface 721 being convex in a paraxial region thereof and an image-side surface 722 being concave in a paraxial region thereof.
The third lens element 730 with positive refractive power has an object-side surface 731 being concave in a paraxial region thereof and an image-side surface 732 being convex in a paraxial region thereof.
The fourth lens element 740 with positive refractive power has an object-side surface 741 being convex in a paraxial region thereof and an image-side surface 742 being convex in a paraxial region thereof. In addition, the object-side surface 741 of the fourth lens element includes at least one concave surface at an off-axis position.
The fifth lens element 750 with negative refractive power has an object-side surface 751 being concave in a paraxial region thereof and an image-side surface 752 being concave in a paraxial region thereof. In addition, the image-side surface 752 of the fifth lens element has at least one convex surface on the off-axis.
The sixth lens element 760 with positive refractive power has an object-side surface 761 being convex in a paraxial region thereof and an image-side surface 762 being concave in a paraxial region thereof. In addition, the sixth lens element includes at least one convex surface on the image-side surface 762 off-axis.
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 optical lens.
Reference is again made to the following thirteen 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 following parameters are defined in the same way as in the first embodiment and will not be described herein.
The following data can be derived from table thirteen and table fourteen:
in addition, in the optical lens system of the seventh embodiment, the focal length of the first lens 710 is f1, the focal length of the second lens 720 is f2, the focal length of the third lens 730 is f3, the focal length of the fourth lens 740 is f4, the focal length of the fifth lens 750 is f5, and the focal length of the sixth lens 760 is f6, which satisfies the following conditions: l f5| < | f1 |; l f5| < | f2 |; l f5| < | f3 |; l f5| < | f4 |; and | f5| < | f6 |.
< eighth embodiment >
Fig. 16 is a schematic diagram illustrating an electronic device 10 according to an eighth embodiment of the invention. The electronic device 10 of the eighth embodiment is a smart phone, and the electronic device 10 includes an image capturing device 11, where the image capturing device 11 includes an optical lens (not shown) and an electronic photosensitive element (not shown) according to the invention, where the electronic photosensitive element is disposed on an image plane of the optical lens.
< ninth embodiment >
Fig. 17 is a schematic diagram illustrating an electronic device 20 according to a ninth embodiment of the invention. The electronic device 20 of the ninth embodiment is a tablet computer, and the electronic device 20 includes an image capturing device 21, and the image capturing device 21 includes an optical lens (not shown) and an electronic photosensitive element (not shown) according to the invention, wherein the electronic photosensitive element is disposed on an image plane of the optical lens.
< tenth embodiment >
Fig. 18 is a schematic view illustrating an electronic device 30 according to a tenth embodiment of the invention. The electronic device 30 of the tenth embodiment is a Head-mounted display (HMD), and the electronic device 30 includes an image capturing device 31, where the image capturing device 31 includes an optical lens (not shown) and an electronic photosensitive element (not shown) according to the present invention, where the electronic photosensitive element is disposed on an image plane of the optical lens.
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 (24)
1. An optical lens assembly, in order from an object side to an image side comprising:
a first lens element with negative refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the object-side surface and the image-side surface being aspheric;
a second lens element with positive refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the object-side surface and the image-side surface being aspheric;
a third lens element with positive refractive power having an object-side surface and an image-side surface which are aspheric;
a fourth lens element with positive refractive power having a convex image-side surface at a paraxial region thereof, wherein the object-side surface and the image-side surface thereof are aspheric;
a fifth lens element with negative refractive power having an object-side surface being concave at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, the image-side surface including at least one convex surface at an off-axis region thereof, the object-side surface and the image-side surface being aspheric; and
a sixth lens element with positive refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the image-side surface including at least one convex surface at an off-axis region, the object-side surface and the image-side surface being aspheric;
wherein, the total number of the lenses with refractive power in the optical lens is six, the focal length of the first lens is f1, the focal length of the second lens is f2, half of the maximum angle of view in the optical lens is HFOV, the distance on the optical axis from the object-side surface of the first lens to an imaging surface is TL, and the following conditions are satisfied:
-1.50< | f1|/f2< 4.0; and
TL/sin(HFOV×1.6)<7.0mm。
2. an optical lens according to claim 1, wherein a distance is provided between any two adjacent lenses of the first lens to the sixth lens.
3. An optical lens according to claim 1, wherein an object-side surface of the third lens element is convex at a paraxial region thereof.
4. An optical lens according to claim 1, wherein half of the maximum field of view in the optical lens is HFOV, which satisfies the following condition:
1.30<tan(HFOV)。
5. an optical lens according to claim 1, wherein the fourth lens element has an object-side surface that is convex at a paraxial region and includes at least one concave surface at an off-axis region.
6. The optical lens assembly of claim 1, wherein the first lens element and the second lens element are separated by an optical axis distance T12, and the second lens element and the third lens element are separated by an optical axis distance T23, which satisfies the following condition:
1.0<T12/T23。
7. the optical lens assembly of claim 6, wherein the first lens element and the second lens element are separated by an optical axis distance T12, and the second lens element and the third lens element are separated by an optical axis distance T23, which satisfies the following condition:
1.40<T12/T23。
8. an optical lens according to claim 1, wherein the optical lens has a focal length f, and the object-side surface of the sixth lens element has a radius of curvature R11, which satisfies the following condition:
0<R11/f<1.40。
9. an optical lens according to claim 8, wherein the optical lens has a focal length f, and the object-side surface of the sixth lens element has a radius of curvature R11, which satisfies the following condition:
0<R11/f<1.0。
10. an optical lens according to claim 1, wherein the refractive index of the first lens element is N1, the refractive index of the second lens element is N2, the refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, and the refractive index of the sixth lens element is N6, wherein the largest of N1, N2, N3, N4, N5, and N6 is Nmax, which satisfies the following conditions:
1.60<Nmax<1.70。
11. an image capturing device, comprising:
an optical lens according to claim 1; and
and the electronic photosensitive element is arranged on the imaging surface of the optical lens.
12. An electronic device, comprising:
the image capturing apparatus of claim 11.
13. An optical lens assembly, in order from an object side to an image side comprising:
a first lens element with negative refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the object-side surface and the image-side surface being aspheric;
a second lens element with positive refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the object-side surface and the image-side surface being aspheric;
a third lens element with positive refractive power having an object-side surface and an image-side surface which are aspheric;
a fourth lens element with positive refractive power having a convex image-side surface at a paraxial region thereof, wherein the object-side surface and the image-side surface thereof are aspheric;
a fifth lens element with negative refractive power having an object-side surface being concave at a paraxial region thereof and an image-side surface being concave at a paraxial region thereof, the image-side surface including at least one convex surface at an off-axis region thereof, the object-side surface and the image-side surface being aspheric; and
a sixth lens element with positive refractive power having an object-side surface being convex at a paraxial region and an image-side surface being concave at a paraxial region, the image-side surface including at least one convex surface at an off-axis region, the object-side surface and the image-side surface being aspheric;
wherein, the total number of the lenses with refractive power in the optical lens is six, the focal length of the first lens element is f1, the focal length of the second lens element is f2, the axial distance between the first lens element and the second lens element is T12, the axial distance between the third lens element and the fourth lens element is T34, the axial distance between the fourth lens element and the fifth lens element is T45, and the axial distance between the fifth lens element and the sixth lens element is T56, which satisfies the following conditions:
-1.50< | f1|/f2< 4.0; and
1.25<T12/(T34+T45+T56)<4.0。
14. an optical lens according to claim 13, wherein a distance is provided between any two adjacent lenses of the first lens to the sixth lens.
15. An optical lens barrel according to claim 13, wherein an object-side surface of the third lens element is convex at a paraxial region thereof.
16. The optical lens of claim 13, wherein half of the maximum field angle of the optical lens is HFOV, and the distance between the object-side surface of the first lens and an imaging plane on the optical axis is TL, which satisfies the following condition:
1.30< tan (hfov); and
TL/sin(HFOV×1.6)<7.0mm。
17. an optical lens according to claim 13, wherein the fourth lens element has an object-side surface that is convex at a paraxial region and includes at least one concave surface at an off-axis region.
18. The optical lens assembly of claim 13, wherein the first lens element and the second lens element are separated by an optical axis distance T12, and the second lens element and the third lens element are separated by an optical axis distance T23, which satisfies the following condition:
1.40<T12/T23。
19. an optical lens element according to claim 13, wherein the optical lens element has a focal length f and the object-side surface of the sixth lens element has a radius of curvature R11, satisfying the following condition:
0<R11/f<1.40。
20. an optical lens element according to claim 19, wherein the optical lens element has a focal length f and the object-side surface of the sixth lens element has a radius of curvature R11, satisfying the following condition:
0<R11/f<1.0。
21. an optical lens barrel according to claim 13, wherein the refractive index of the first lens element is N1, the refractive index of the second lens element is N2, the refractive index of the third lens element is N3, the refractive index of the fourth lens element is N4, the refractive index of the fifth lens element is N5, and the refractive index of the sixth lens element is N6, wherein the largest of N1, N2, N3, N4, N5, and N6 is Nmax, which satisfies the following conditions:
1.60<Nmax<1.70。
22. the optical lens assembly of claim 13, wherein the first lens element has an optical axis thickness of CT1, the second lens element has an optical axis thickness of CT2, the third lens element has an optical axis thickness of CT3, the fourth lens element has an optical axis thickness of CT4, and the sixth lens element has an optical axis thickness of CT6, wherein the following conditions are satisfied:
CT1<CT2；
CT1<CT3；
CT1< CT 4; and
CT1<CT6。
23. an image capturing device, comprising:
an optical lens according to claim 13; and
an electronic photosensitive element is arranged on an imaging surface of the optical lens.
24. An electronic device, comprising:
the image capturing device as claimed in claim 23.
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| CN201910133545.2A CN109633869B (en) | 2015-04-02 | 2015-04-02 | Optical lens, image capturing device and electronic device |
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| CN201510153031.5A CN106154487B (en) | 2015-04-02 | 2015-04-02 | Optical lens, image-taking device and electronic device |
| CN201910133545.2A CN109633869B (en) | 2015-04-02 | 2015-04-02 | Optical lens, image capturing device and electronic device |
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| CN201510153031.5A Division CN106154487B (en) | 2015-04-02 | 2015-04-02 | Optical lens, image-taking device and electronic device |
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| CN109001886B (en) * | 2017-06-06 | 2021-09-10 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN109425953B (en) * | 2017-08-22 | 2020-12-29 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN109212725B (en) * | 2018-11-09 | 2020-11-24 | 歌尔光学科技有限公司 | Wide-angle lens |
| WO2021128270A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Image-capture optical lens |
| WO2021128271A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
| WO2021128261A1 (en) * | 2019-12-27 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Image-capture optical lens |
| CN113866940B (en) * | 2021-09-14 | 2023-09-05 | 江西晶超光学有限公司 | Optical system, camera module and electronic equipment |
| CN114185157B (en) * | 2022-02-14 | 2022-07-22 | 江西联益光学有限公司 | Optical lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102388331A (en) * | 2009-04-24 | 2012-03-21 | 株式会社理光 | Wide angle lens and imaging device |
| CN104297905A (en) * | 2014-09-22 | 2015-01-21 | 青岛歌尔声学科技有限公司 | Wide-angle lens |
| CN204188869U (en) * | 2014-09-22 | 2015-03-04 | 青岛歌尔声学科技有限公司 | A kind of large aperture bugeye lens |
| US20150062720A1 (en) * | 2013-08-28 | 2015-03-05 | Young Optics Inc. | Fixed-focus lens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101917228B1 (en) * | 2011-08-17 | 2019-01-29 | 엘지이노텍 주식회사 | Imaging lens |
| TWI438471B (en) * | 2011-08-24 | 2014-05-21 | Largan Precision Co Ltd | Optical image capturing lenses |
| TWI484247B (en) * | 2013-12-20 | 2015-05-11 | 玉晶光電股份有限公司 | Camera device and optical imaging lens thereof |
| CN104330868B (en) * | 2014-07-29 | 2017-05-10 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device using optical imaging lens |
-
2015
- 2015-04-02 CN CN201910133545.2A patent/CN109633869B/en active Active
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102388331A (en) * | 2009-04-24 | 2012-03-21 | 株式会社理光 | Wide angle lens and imaging device |
| US20150062720A1 (en) * | 2013-08-28 | 2015-03-05 | Young Optics Inc. | Fixed-focus lens |
| CN104297905A (en) * | 2014-09-22 | 2015-01-21 | 青岛歌尔声学科技有限公司 | Wide-angle lens |
| CN204188869U (en) * | 2014-09-22 | 2015-03-04 | 青岛歌尔声学科技有限公司 | A kind of large aperture bugeye lens |
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| CN109633869A (en) | 2019-04-16 |
| CN106154487A (en) | 2016-11-23 |
| CN106154487B (en) | 2019-03-22 |
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