CN109975959B - Image capturing optical lens assembly, image capturing device and electronic device - Google Patents
Image capturing optical lens assembly, image capturing device and electronic device Download PDFInfo
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- CN109975959B CN109975959B CN201910402875.7A CN201910402875A CN109975959B CN 109975959 B CN109975959 B CN 109975959B CN 201910402875 A CN201910402875 A CN 201910402875A CN 109975959 B CN109975959 B CN 109975959B
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- G—PHYSICS
- 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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
The invention discloses an optical lens set for image capture, an image capture device and an electronic device. The image capturing 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 and a fifth lens element. The first lens element has negative refractive power. The fourth lens element with positive refractive power. The fifth lens element with negative refractive power. The total number of the lenses in the image capturing optical lens group is five. When a specific condition is satisfied, the configuration of the refractive power between the lenses can be balanced, and the aberration correction capability is effectively improved. The invention also discloses an image capturing device with the image capturing optical lens group and an electronic device with the image capturing device.
Description
This application is a divisional application of the patent application entitled "optical lens set for image pickup, image pickup device and electronic device" filed on 2015 as 11/6.10. 201510747055.3.
Technical Field
The present invention relates to an optical lens assembly for capturing images and an image capturing device, and more particularly, to an optical lens assembly for capturing images with a wide viewing angle and an image capturing device applied to an electronic device.
Background
With the recent popularity of lens types and applications, many products (such as household appliances, game machines, monitors, automobiles, electronic products, mobile devices, etc.) are equipped with lenses, which are suitable for image assistance, image recognition, motion detection, etc. Some devices must operate under a light source or an environment with a low light quantity (such as an infrared device for detecting the position of a human body), and the light input quantity of an optical lens of the device is also sufficient. It is known that most of the optical lenses used in the current market products cannot be applied to the environment with weak light quantity due to the small aperture, or the resolution is not enough in the configuration of the large aperture.
Disclosure of Invention
The invention provides an optical lens group for image capture, an image capture device and an electronic device, which can have large aperture and high imaging quality through the optimized configuration of lenses and refractive power, and can be particularly applied to the infrared wavelength range of 850nm to 1200 nm.
According to the present invention, an optical lens assembly for image capturing 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 and a fifth lens element. The first lens element has negative refractive power. The fourth lens element with positive refractive power. The fifth lens element with negative refractive power. The total number of the lenses in the image capturing optical lens group is five. The total number of lenses with dispersion coefficients less than 40 in the image capturing optical lens group is Nv40, the maximum image height of the image capturing optical lens group is ImgH, and the diameter of the entrance pupil of the image capturing optical lens group is EPD, which satisfies the following conditions:
4 is equal to or more than Nv 40; and
1.0<ImgH/EPD<2.5。
according to the present invention, an image capturing device is further provided, which comprises the image capturing optical lens assembly as described in the previous paragraph and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the image capturing optical lens assembly.
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 image capturing 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 and a fifth lens element. The first lens element has negative refractive power. The fourth lens element with positive refractive power. The fifth lens element with negative refractive power. The total number of the lenses in the image capturing optical lens group is five. The total number of lenses with dispersion coefficients less than 40 in the image capturing optical lens group is Nv40, the maximum image height of the image capturing optical lens group is ImgH, the diameter of the entrance pupil of the image capturing optical lens group is EPD, and the focal length of the image capturing optical lens group is f, which satisfy the following conditions:
4≤Nv40；
0.80< ImgH/EPD < 4.0; and
f/EPD<1.80。
according to the present invention, an image capturing device is further provided, which comprises the image capturing optical lens assembly as described in the previous paragraph and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the image capturing optical lens assembly.
According to another aspect of the present invention, an electronic device includes the image capturing device as described in the previous paragraph.
When Nv40 satisfies the above condition, a balance in imaging quality and lens matching can be ensured.
When the ImgH/EPD satisfies the above condition, it can be ensured that the image capturing optical lens assembly has a sufficient light entering amount at the center when the viewing angle is large.
When the f/EPD satisfies the above condition, the image capturing optical lens assembly has both large aperture and high imaging quality.
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 schematic view illustrating 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 diagram illustrating a parameter SD11 according to the first embodiment of FIG. 1;
FIG. 18 is a schematic view of an electronic device according to a ninth embodiment of the invention;
FIG. 19 is a schematic view of an electronic device according to a tenth embodiment of the invention; and
fig. 20 is a schematic view illustrating an electronic device according to an eleventh 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, 800
A first lens: 110. 210, 310, 410, 510, 610, 710, 810
An object-side surface: 111. 211, 311, 411, 511, 611, 711, 811
Image-side surface: 112. 212, 312, 412, 512, 612, 712, 812
A second lens: 120. 220, 320, 420, 520, 620, 720, 820
An object-side surface: 121. 221, 321, 421, 521, 621, 721, 821
Image-side surface: 122. 222, 322, 422, 522, 622, 722, 822
A third lens: 130. 230, 330, 430, 530, 630, 730, 830
An object-side surface: 131. 231, 331, 431, 531, 631, 731, 831
Image-side surface: 132. 232, 332, 432, 532, 632, 732, 832
A fourth lens: 140. 240, 340, 440, 540, 640, 740, 840
An object-side surface: 141. 241, 341, 441, 541, 641, 741, 841
Image-side surface: 142. 242, 342, 442, 542, 642, 742, 842
A fifth lens: 150. 250, 350, 450, 550, 650, 750, 850
An object-side surface: 151. 251, 351, 451, 551, 651, 751, 851
Image-side surface: 152. 252, 352, 452, 552, 652, 752, 852
Infrared ray filtering filter element: 160. 260, 360, 460, 560, 660, 760, 860
Imaging surface: 170. 270, 370, 470, 570, 670, 770, 870
An electron-sensitive element: 180. 280, 380, 480, 580, 680, 780, 880
f: focal length of optical lens group for image capture
EPD: entrance pupil diameter of optical lens group for image capture
HFOV: half of maximum viewing angle in image-taking optical system
FOV: maximum visual angle in optical lens group for image capture
Nv 30: the total number of lenses with dispersion coefficient less than 30 in the image-taking optical lens group
Nv 40: total number of lenses with dispersion coefficient less than 40 in imaging optical lens group
TL: the distance from the object side surface of the first lens element to the image plane on the optical axis
ImgH: maximum image height of optical lens group for image capture
SD 11: maximum effective radius of object-side surface of the first lens
SDavg: the maximum optical effective radii of all object side surfaces and the maximum optical effective radii of all image side surfaces of the second lens element, the third lens element, the fourth lens element and the fifth lens element are averaged
SDstop: aperture radius of aperture
R5: radius of curvature of object-side surface of third lens
R6: radius of curvature of image-side surface of the third lens
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
Detailed Description
An optical lens assembly for image capturing 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 and a fifth lens element.
The optical lens group for image capture provided by the invention can be applied to the infrared wavelength range of 850 nm-1200 nm. Therefore, the image can be captured for recognition or detection under the condition of not interfering human eyes, or the image can be used for night image detection and the like.
The image capturing optical lens assembly may further include an aperture stop, wherein the lens between the aperture stop and the object is a front group lens, and the lens between the aperture stop and the image plane is a rear group lens.
The first lens element with negative refractive power has a concave image-side surface. Therefore, peripheral light rays with larger visual angles can be assisted to enter the image taking optical lens group, and the image pickup range is enlarged.
The image side surface of the third lens element can be convex, so that astigmatism and spherical aberration can be effectively reduced, and the imaging quality can be improved.
The fourth lens element with positive refractive power can help the light incident on the image capturing optical lens assembly to converge on the image plane, thereby enhancing the light gathering capability of the image capturing optical lens assembly.
The object-side surface of the fifth lens element can be concave, which is helpful for improving the aberration correction capability and improving the imaging quality.
The total number of lenses with an abbe number less than 40 in the image capturing optical lens assembly is Nv40, which satisfies the following condition: 3 is less than or equal to Nv 40. Thereby, balance between the imaging quality and the lens matching can be ensured. Preferably. The following conditions may be satisfied: 4 is equal to or less than Nv 40.
The focal length of the first lens is f1, and the focal length of the fourth lens is f4, which satisfies the following conditions: 0.30< | f4/f1| < 2.0. Therefore, the configuration of the refractive power between the front group lens and the rear group lens in the image capturing optical lens assembly can be balanced, and the aberration correction capability can be effectively improved. Preferably. The following conditions may be satisfied: 0.50< | f4/f1| < 1.50.
The maximum image height of the image capturing optical lens group is ImgH, the entrance pupil diameter of the image capturing optical lens group is EPD, and the following conditions are satisfied: 0.80< ImgH/EPD < 4.0. Therefore, when the image taking optical lens group has a larger visual angle, the center of the image taking optical lens group has enough light entering amount. Preferably, the following conditions are satisfied: 1.0< ImgH/EPD < 2.5. More preferably, the following conditions may be satisfied: 1.0< ImgH/EPD < 1.6.
The distance TL from the object-side surface of the first lens element to the image plane on the optical axis and the focal length f of the image capturing optical lens assembly satisfy the following conditions: 3.0< TL/f. Therefore, the optical lens group for image taking can be ensured to have sufficient visual angle so as to carry out image acquisition in a larger range. Preferably, the following conditions are satisfied: 4.0< TL/f < 10.0.
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, and the focal length of the fifth lens is f5, which satisfies the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |. Therefore, the change of the refractive power among the lenses in the optical lens group for image taking can be slowed down, the problem of insufficient aberration correction or over correction caused by too large refractive power difference is avoided, and the reduction of the sensitivity is facilitated.
The maximum visual angle in the image capturing optical lens group is FOV, which satisfies the following conditions: 100 degrees < FOV. Therefore, the advantage of large visual angle of the optical lens group for image taking can be improved. Preferably, the following conditions are satisfied: 110 degrees < FOV.
The aperture radius of the aperture stop is SDstop, and the average of the maximum optical effective radii of all the object-side surfaces and the maximum optical effective radii of all the image-side surfaces of the second, third, fourth, and fifth lenses is SDavg, which satisfies the following conditions: 0.75< SDavg/SDstop < 1.35. Therefore, the light inlet quantity of the periphery of the optical lens group for image taking can be ensured to be sufficient.
The total number of lenses with the dispersion coefficient less than 30 in the image capturing optical lens group is Nv30, which satisfies the following condition: 3 is less than or equal to Nv 30. Therefore, the balance between the imaging quality and the lens matching can be further enhanced.
The total focal length of the lens at the object side of the aperture is a positive value, and the total focal length of the lens at the image side of the aperture is a positive value. Therefore, the back focal length of the optical lens group for image capture can be shortened, the change of the refractive power between the lenses is slowed down, the sensitivity is effectively reduced, and the problems of insufficient aberration correction or excessive correction can be avoided.
The focal length of the image capturing optical lens group is f, the diameter of the entrance pupil of the image capturing optical lens group is EPD, and the following conditions are satisfied: f/EPD < 1.80. Therefore, the image capturing optical lens group has both large aperture and high imaging quality.
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) < 3.0. Therefore, astigmatism and spherical aberration are effectively reduced, and imaging quality is improved.
The maximum effective radius of the object-side surface of the first lens element is SD11, and the average of the maximum effective radii of all object-side surfaces and all image-side surfaces of the second, third, fourth, and fifth lens elements is SDavg, which satisfies the following condition: 1.25< SD11/SDavg < 2.5. Therefore, the size difference of the effective diameters between the object side lens and the image side lens can be reduced, and the miniaturization of the optical lens group for image taking is facilitated.
In addition, at least one glass lens can be arranged in the front group of lenses, so that the influence of the environment on the image taking optical lens group is effectively reduced; or at least one lens made of plastic material can be arranged to improve the mass production capability and reduce the manufacturing cost.
In the image capturing optical lens assembly of the present invention, the lens may be made of plastic or glass. When the lens is made of plastic, the production cost can be effectively reduced. In addition, when the lens element is made of glass, the degree of freedom of the refractive power configuration of the image capturing optical lens assembly can be increased. In addition, the object-side surface and the image-side surface of the image capturing optical lens assembly 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, thereby effectively reducing the total track length of the image capturing optical lens assembly.
In addition, in the image capturing optical lens assembly provided by the present invention, if the lens surface is a convex surface and the position of the convex surface is not defined, it means that the lens surface can be a convex surface at a position near the optical axis; if the lens surface is concave and the concave position is not defined, it means that the lens surface can be concave at the paraxial region. In the image capturing optical lens assembly of 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 can be referred to.
In addition, in the image capturing optical lens assembly of the present invention, at least one aperture can be disposed as required to reduce stray light, which is helpful for improving image quality.
The image plane of the image capturing optical lens assembly of the present invention may be a plane or a curved surface with any curvature, especially a curved surface with a concave surface facing the object side, depending on the corresponding electronic photosensitive element.
In the image capturing optical lens assembly of the present invention, the aperture may be configured as a front aperture or a middle aperture, wherein the front aperture means that the aperture is disposed between the object and the first lens element, and the middle aperture means that the aperture is disposed between the first lens element and the image plane. If the aperture is a front aperture, the exit pupil (exitpurl) of the image-capturing optical lens assembly can generate a longer distance from the image plane, so that the image-capturing optical lens assembly 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 system, so that the image capturing optical lens assembly has the advantage of a wide-angle lens.
The optical lens assembly for image capture of the present invention can also be applied to electronic devices such as three-dimensional (3D) image capture, digital cameras, mobile products, digital flat panels, smart televisions, network monitoring devices, motion sensing game machines, automobile recorders, reversing and developing devices, wearable products, etc. in many ways.
The invention provides an image capturing device, comprising the image capturing optical lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the image capturing optical lens assembly. By optimizing the lens elements and refractive power thereof in the image capturing optical lens assembly, the image capturing device has a large aperture and high imaging quality, and is particularly applicable to infrared wavelengths ranging from 850nm to 1200 nm. 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 image capturing optical lens set (not labeled) and an electronic photosensitive element 180. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 110, a second lens element 120, a third lens element 130, an aperture stop 100, a fourth lens element 140, a fifth lens element 150, an ir-cut filter 160 and an image plane 170, and the electronic sensor 180 is disposed on the image plane 170 of the image capturing optical lens assembly, wherein the image capturing optical lens assembly includes five lens elements (110 and 150).
The first lens element 110 with negative refractive power has a convex object-side surface 111 and a concave image-side surface 112.
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 positive refractive power has a concave object-side surface 131 and a convex image-side surface 132.
The fourth lens element 140 with positive refractive power has a convex 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, which are both spherical, wherein the fourth lens element image-side surface 142 and the fifth lens element object-side surface 151 are bonded together.
The ir-cut filter 160 is made of glass, and is disposed between the fifth lens element 150 and the image plane 170 without affecting the focal length of the image capturing optical lens assembly.
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 first embodiment of the optical lens assembly for image capturing, a focal length of the optical lens assembly for image capturing is f, and an entrance pupil diameter of the optical lens assembly for image capturing is EPD, which satisfies the following conditions: f is 1.77 mm; and f/EPD 1.15.
In the image capturing optical system of the first embodiment, half of the maximum view angle in the image capturing optical system is HFOV, and the maximum view angle in the image capturing optical lens assembly is FOV, which satisfy the following conditions: HFOV 67.0 degrees; and FOV 134.0 degrees.
In the image capturing optical system of the first embodiment, the total number of lenses with an abbe number less than 30 in the image capturing optical lens group is Nv30, and the total number of lenses with an abbe number less than 40 in the image capturing optical lens group is Nv40, which satisfy the following conditions: nv30 ═ 4; and Nv40 ═ 4. In detail, in the first embodiment, Nv30 and Nv40 are 4, which are the first lens element 110, the second lens element 120, the third lens element 130 and the fourth lens element 140, respectively.
In the image capturing optical system of the first embodiment, an axial distance between the object-side surface 111 of the first lens element and the image plane 170 is TL, and a focal length of the image capturing optical lens assembly is f, which satisfies the following conditions: TL/f is 8.36.
In the image capturing optical system of the first embodiment, the maximum image height (i.e. half of the diagonal length of the effective sensing area of the electronic photosensitive element 180) of the image capturing optical lens assembly is ImgH, and the diameter of the entrance pupil of the image capturing optical lens assembly is EPD, which satisfies the following conditions: ImgH/EPD is 1.13.
Referring to fig. 17, a schematic diagram of the parameter SD11 in the first embodiment of fig. 1 is shown. As can be seen from fig. 17, the maximum effective radius of the object-side surface 111 of the first lens element is SD11, the average of the maximum effective radii of all object-side surfaces and all image-side surfaces of the second, third, fourth and fifth lens elements 120, 130, 140 and 150 is SDavg, and the aperture radius of the aperture stop 100 is SDstop, which satisfies the following conditions: SD11/SDavg ═ 1.61; and SDavg/SDstop ═ 1.05.
In the image capturing optical system of the first embodiment, the radius of curvature of the object-side surface 131 of the third lens element is R5, and the 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) ═ 1.77.
In the image capturing optical system of the first embodiment, the focal length of the first lens element 110 is f1, and the focal length of the fourth lens element 140 is f4, which satisfies the following conditions: 1.65 | f4/f1 |.
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 0-13 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-A10 represents the 4 th-10 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.
In addition, in the first embodiment, 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, and the focal length of the fifth lens 150 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the first embodiment, the total focal length of the lenses (the first lens 110, the second lens 120, and the third lens 130) on the object side of the stop 100 is a positive value, and the total focal length of the lenses (the fourth lens 140 and the fifth lens 150) on the image side of the stop 100 is a positive value.
< 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 image capturing optical lens set (not labeled) and an electronic photosensitive element 280. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 210, a second lens element 220, a third lens element 230, an aperture stop 200, a fourth lens element 240, a fifth lens element 250, an ir-cut filter 260 and an image plane 270, and the electronic sensing element 280 is disposed on the image plane 270 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (210 and 250).
The first lens element 210 with negative refractive power has a planar object-side surface 211 and a concave image-side surface 212.
The second lens element 220 with negative refractive power has a convex object-side surface 221 and a concave image-side surface 222.
The third lens element 230 with positive refractive power has a convex object-side surface 231 and a convex 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 planar image-side surface 252.
The ir-cut filter 260 is made of glass, and disposed between the fifth lens element 250 and the image plane 270 without affecting the focal length of the image capturing optical lens assembly.
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 second embodiment, 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, and the focal length of the fifth lens 250 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the second embodiment, the total focal length of the lenses (the first lens 210, the second lens 220, and the third lens 230) on the object side of the stop 200 is a positive value, and the total focal length of the lenses (the fourth lens 240 and the fifth lens 250) on the image side of the stop 200 is a positive value.
< 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 image capturing optical lens set (not labeled) and an electronic photosensitive element 380. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 310, a second lens element 320, a third lens element 330, an aperture stop 300, a fourth lens element 340, a fifth lens element 350, an ir-cut filter element 360 and an image plane 370, and the electronic sensor 380 is disposed on the image plane 370 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (310 and 350).
The first lens element 310 with negative refractive power has a concave object-side surface 311 and a concave image-side surface 312.
The second lens element 320 with negative refractive power has a convex object-side surface 321 and a concave image-side surface 322.
The third lens element 330 with positive refractive power has a concave object-side surface 331 and a convex image-side surface 332.
The fourth lens element 340 with positive refractive power has a convex 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 ir-cut filter 360 is made of glass, and is disposed between the fifth lens element 350 and the image plane 370 without affecting the focal length of the image capturing optical lens assembly.
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 third embodiment, 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, and the focal length of the fifth lens 350 is f5, which satisfies the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the third embodiment, the total focal length of the lenses (the first lens 310, the second lens 320, and the third lens 330) on the object side of the stop 300 is a positive value, and the total focal length of the lenses (the fourth lens 340 and the fifth lens 350) on the image side of the stop 300 is a positive value.
< 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 device of the fourth embodiment includes an image capturing optical lens set (not labeled) and an electronic photosensitive element 480. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 410, a second lens element 420, a third lens element 430, an aperture stop 400, a fourth lens element 440, a fifth lens element 450, an ir-cut filter 460 and an image plane 470, and the electronic sensor 480 is disposed on the image plane 470 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (410 and 450).
The first lens element 410 with negative refractive power has a convex object-side surface 411 and a concave image-side surface 412.
The second lens element 420 with positive refractive power has a convex object-side surface 421 and a concave image-side surface 422.
The third lens element 430 with positive refractive power has a concave object-side surface 431 and a convex image-side surface 432.
The fourth lens element 440 with positive refractive power has a convex object-side surface 441 and a convex image-side surface 442.
The fifth lens element 450 with negative refractive power has a concave object-side surface 451 and a convex image-side surface 452.
The ir-cut filter 460 is made of glass, and is disposed between the fifth lens element 450 and the image plane 470 without affecting the focal length of the image capturing optical lens assembly.
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 fourth embodiment, 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, and the focal length of the fifth lens 450 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the fourth embodiment, the total focal length of the lenses (the first lens 410, the second lens 420, and the third lens 430) on the object side of the stop 400 is a positive value, and the total focal length of the lenses (the fourth lens 440 and the fifth lens 450) on the image side of the stop 400 is a positive value.
< 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 set (not labeled) for image capturing and an electronic photosensitive element 580. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 510, a second lens element 520, a third lens element 530, an aperture stop 500, a fourth lens element 540, a fifth lens element 550, an ir-cut filter element 560 and an image plane 570, and the electronic sensing element 580 is disposed on the image plane 570 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (510) and 550).
The first lens element 510 with negative refractive power has a convex object-side surface 511 and a concave image-side surface 512.
The second lens element 520 with negative refractive power has a convex object-side surface 521 and a concave image-side surface 522.
The third lens element 530 with positive refractive power has a planar object-side surface 531 and a convex image-side surface 532 which are both spherical.
The fourth lens element 540 with positive refractive power has a convex 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, which are both spherical, wherein the fourth lens element image-side surface 542 is bonded to the fifth lens element object-side surface 551.
The ir-cut filter 560 is made of glass, and is disposed between the fifth lens element 550 and the image plane 570 without affecting the focal length of the image capturing optical lens assembly.
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 fifth embodiment, 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, and the focal length of the fifth lens 550 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the fifth embodiment, the total focal length of the lenses (the first lens 510, the second lens 520, and the third lens 530) on the object side of the stop 500 is a positive value, and the total focal length of the lenses (the fourth lens 540 and the fifth lens 550) on the image side of the stop 500 is a positive value.
< 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 set (not labeled) for image capturing and an electronic photosensitive element 680. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 610, a second lens element 620, a third lens element 630, an aperture stop 600, a fourth lens element 640, a fifth lens element 650, an ir-cut filter element 660, and an image plane 670, and an electronic sensing element 680 is disposed on the image plane 670 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (610-650).
The first lens element 610 with negative refractive power has a convex object-side surface 611 and a concave image-side surface 612.
The second lens element 620 with negative refractive power has a convex object-side surface 621 and a concave image-side surface 622.
The third lens element 630 with positive refractive power has a convex object-side surface 631 and a convex image-side surface 632.
The fourth lens element 640 with positive refractive power has a convex object-side surface 641 and a convex image-side surface 642.
The fifth lens element 650 with negative refractive power has a concave object-side surface 651 and a concave image-side surface 652.
The ir-cut filter 660 is made of glass, and disposed between the fifth lens element 650 and the image plane 670 and does not affect the focal length of the image capturing optical lens assembly.
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 sixth embodiment, 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, and the focal length of the fifth lens 650 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the sixth embodiment, the total focal length of the lenses (the first lens 610, the second lens 620, and the third lens 630) on the object side of the stop 600 is a positive value, and the total focal length of the lenses (the fourth lens 640 and the fifth lens 650) on the image side of the stop 600 is a positive value.
< 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 device of the seventh embodiment includes an image capturing optical lens set (not labeled) and an electronic photosensitive element 780. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 710, a second lens element 720, a third lens element 730, an aperture stop 700, a fourth lens element 740, a fifth lens element 750, an ir-cut filter element 760 and an image plane 770, and the electro-optic sensor 780 is disposed on the image plane 770 of the image capturing optical lens assembly, wherein the image capturing optical lens assembly includes five lens elements (710 and 750).
The first lens element 710 with negative refractive power has a convex object-side surface 711 and a concave image-side surface 712.
The second lens element 720 with negative refractive power has a concave object-side surface 721 and a concave image-side surface 722.
The third lens element 730 with positive refractive power has a convex object-side surface 731 and a convex image-side surface 732.
The fourth lens element 740 with positive refractive power has a convex object-side surface 741 and a convex image-side surface 742.
The fifth lens element 750 with negative refractive power has a concave object-side surface 751 and a convex image-side surface 752.
The ir-cut filter 760 is made of glass, and disposed between the fifth lens element 750 and the image plane 770 without affecting the focal length of the image capturing optical lens assembly.
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 seventh embodiment, 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, and the focal length of the fifth lens 750 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the seventh embodiment, the total focal length of the lenses (the first lens 710, the second lens 720, and the third lens 730) positioned on the object side of the stop 700 is a positive value, and the total focal length of the lenses (the fourth lens 740 and the fifth lens 750) positioned on the image side of the stop 700 is a positive value.
< eighth embodiment >
Referring to fig. 15 and 16, wherein fig. 15 is a schematic diagram of an image capturing apparatus according to an eighth embodiment of the present invention, and fig. 16 is a graph illustrating spherical aberration, astigmatism and distortion of the eighth embodiment in order from left to right. As shown in fig. 15, the image capturing device of the eighth embodiment includes an image capturing optical lens set (not shown) and an electronic photosensitive element 880. The image capturing optical lens assembly includes, in order from an object side to an image side, a first lens element 810, a second lens element 820, a third lens element 830, an aperture stop 800, a fourth lens element 840, a fifth lens element 850, an ir-cut filter 860 and an image plane 870, and the electronic sensing element 880 is disposed on the image plane 870 of the image capturing optical lens assembly, wherein the lens elements in the image capturing optical lens assembly are five (810 and 850).
The first lens element 810 with negative refractive power has a concave object-side surface 811 and a concave image-side surface 812.
The second lens element 820 with negative refractive power has a concave object-side surface 821 and a concave image-side surface 822.
The third lens element 830 with positive refractive power has a convex object-side surface 831 and a convex image-side surface 832.
The fourth lens element 840 with positive refractive power has a convex object-side surface 841 and a concave image-side surface 842.
The fifth lens element 850 with negative refractive power has a concave object-side surface 851 and a convex image-side surface 852.
The ir-cut filter 860 is made of glass material, and is disposed between the fifth lens element 850 and the image plane 870 without affecting the focal length of the image capturing optical lens assembly.
See also table fifteen below and table sixteen.
In the eighth 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 the table fifteen and table sixteen:
in addition, in the eighth embodiment, the focal length of the second lens 820 is f2, the focal length of the third lens 830 is f3, the focal length of the fourth lens 840 is f4, and the focal length of the fifth lens 850 is f5, which satisfy the following conditions: l f4| < | f2 |; l f4| < | f3 |; and | f4| < | f5 |.
In the eighth embodiment, the total focal length of the lenses (the first lens 810, the second lens 820, and the third lens 830) on the object side of the stop 800 is a positive value, and the total focal length of the lenses (the fourth lens 840 and the fifth lens 850) on the image side of the stop 800 is a positive value.
< ninth embodiment >
Fig. 18 is a schematic view illustrating an electronic device 10 according to a ninth embodiment of the invention. The electronic device 10 of the ninth embodiment is a reversing developing device, the electronic device 10 includes an image capturing device 11, and the image capturing device 11 includes an image capturing optical lens assembly (not shown) and an electronic photosensitive element (not shown), wherein the electronic photosensitive element is disposed on an image plane of the image capturing optical lens assembly.
< tenth embodiment >
Fig. 19 is a schematic diagram illustrating an electronic device 20 according to a tenth embodiment of the invention. The electronic device 20 of the tenth embodiment is a driving recorder, the electronic device 20 includes an image capturing device 21, and the image capturing device 21 includes an image capturing optical lens assembly (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 image capturing optical lens assembly.
< eleventh embodiment >
Fig. 20 is a schematic view illustrating an electronic device 30 according to an eleventh embodiment of the invention. The electronic device 30 of the eleventh embodiment is a safety monitoring device, wherein the electronic device 30 includes an image capturing device 31, and the image capturing device 31 includes an image capturing optical lens assembly (not shown) and an electronic sensor (not shown) according to the present invention, wherein the electronic sensor is disposed on an image plane of the image capturing optical lens assembly.
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 (26)
1. An optical lens assembly for image capture, in order from an object side to an image side comprising:
a first lens element with negative refractive power;
a second lens element;
a third lens element;
a fourth lens element with positive refractive power; and
a fifth lens element with negative refractive power;
the total number of the lenses in the optical lens group for image capture is five, the total number of the lenses with the dispersion coefficient less than 40 in the optical lens group for image capture is Nv40, the maximum image height of the optical lens group for image capture is ImgH, the diameter of the entrance pupil of the optical lens group for image capture is EPD, and the following conditions are satisfied:
4 is equal to or more than Nv 40; and
1.0<ImgH/EPD<2.5。
2. the image capturing optical lens assembly as claimed in claim 1, wherein the second lens element has a convex object-side surface and the fourth lens element has a convex image-side surface.
3. The image capturing optical lens assembly as claimed in claim 2, wherein the object-side surface of the fifth lens element is concave.
4. The image capturing optical lens assembly as claimed in claim 2, wherein the image-side surface of the fifth lens element is concave.
5. The image capturing optical lens assembly as claimed in claim 1, wherein the maximum image height of the optical lens assembly is ImgH, the entrance pupil diameter of the optical lens assembly is EPD, and the following conditions are satisfied:
1.0<ImgH/EPD<1.6。
6. the image capturing optical lens assembly as claimed in claim 1, further comprising:
an aperture stop, wherein an aperture radius of the aperture stop is SDstop, and an average of maximum optical effective radii of all object-side surfaces and maximum optical effective radii of all image-side surfaces of the second, third, fourth, and fifth lenses is SDavg, which satisfies the following condition:
0.75<SDavg/SDstop<1.35。
7. the image capturing optical lens assembly as claimed in claim 1, wherein the total number of lenses having an abbe number less than 30 in the image capturing optical lens assembly is Nv30, which satisfies the following condition:
3≤Nv30。
8. the image capturing optical lens assembly as claimed in claim 7, wherein the total number of lenses having an abbe number less than 30 in the image capturing optical lens assembly is Nv30, which satisfies the following condition:
4≤Nv30。
9. the image capturing optical lens assembly of claim 1, wherein an axial distance between the object-side surface of the first lens element and an image plane is TL, and a focal length of the image capturing optical lens assembly is f, wherein the following conditions are satisfied:
3.0<TL/f。
10. the image capturing optical lens assembly as claimed in claim 1, wherein the focal length of the first lens element is f1, and the focal length of the fourth lens element is f4, which satisfy the following conditions:
0.30<|f4/f1|<2.0。
11. the image capturing optical lens assembly as claimed in claim 1, wherein the optical lens assembly is applied in the infrared wavelength range of 850nm to 1200 nm.
12. An image capturing device, comprising:
the image capturing optical lens assembly as claimed in claim 1; and
an electronic photosensitive element, which is arranged on an imaging surface of the image capturing optical lens assembly.
13. An electronic device, comprising:
the image capturing apparatus of claim 12.
14. An optical lens assembly for image capture, in order from an object side to an image side comprising:
a first lens element with negative refractive power;
a second lens element;
a third lens element;
a fourth lens element with positive refractive power; and
a fifth lens element with negative refractive power;
the total number of the lenses in the image capturing optical lens group is five, the total number of the lenses with the dispersion coefficient smaller than 40 in the image capturing optical lens group is Nv40, the maximum image height of the image capturing optical lens group is ImgH, the diameter of the entrance pupil of the image capturing optical lens group is EPD, the focal length of the image capturing optical lens group is f, and the following conditions are satisfied:
4≤Nv40；
0.80< ImgH/EPD < 4.0; and
f/EPD<1.80。
15. the image capturing optical lens assembly of claim 14, wherein the object-side surface of the second lens element is convex and the image-side surface of the fourth lens element is convex.
16. The image capturing optical lens assembly as claimed in claim 14, wherein the object-side surface of the fifth lens element is concave.
17. The imaging optical lens assembly as claimed in claim 14, wherein the image-side surface of the fifth lens element is concave.
18. The image capturing optical lens assembly as claimed in claim 14, wherein the maximum image height of the image capturing optical lens assembly is ImgH, the entrance pupil diameter of the image capturing optical lens assembly is EPD, and the following conditions are satisfied:
1.0<ImgH/EPD<1.6。
19. the image capturing optical lens assembly as claimed in claim 14, further comprising:
an aperture stop, wherein an aperture radius of the aperture stop is SDstop, and an average of maximum optical effective radii of all object-side surfaces and maximum optical effective radii of all image-side surfaces of the second, third, fourth, and fifth lenses is SDavg, which satisfies the following condition:
0.75<SDavg/SDstop<1.35。
20. the image capturing optical lens assembly as claimed in claim 14, wherein the total number of lenses having an abbe number less than 30 in the image capturing optical lens assembly is Nv30, which satisfies the following condition:
3≤Nv30。
21. the image capturing optical lens assembly as claimed in claim 20, wherein the total number of lenses having an abbe number less than 30 in the image capturing optical lens assembly is Nv30, which satisfies the following condition:
4≤Nv30。
22. the image capturing optical lens assembly of claim 14, wherein an axial distance between the object-side surface of the first lens element and an image plane is TL, and a focal length of the image capturing optical lens assembly is f, wherein the following conditions are satisfied:
3.0<TL/f。
23. the image capturing optical lens assembly as claimed in claim 14, wherein the focal length of the first lens element is f1, and the focal length of the fourth lens element is f4, which satisfy the following conditions:
0.30<|f4/f1|<2.0。
24. the image capturing optical lens assembly as claimed in claim 14, wherein the optical lens assembly is applied in the infrared wavelength range of 850nm to 1200 nm.
25. An image capturing device, comprising:
the image capturing optical lens assembly of claim 14; and
an electronic photosensitive element, which is arranged on an imaging surface of the image capturing optical lens assembly.
26. An electronic device, comprising:
the image capturing device as claimed in claim 25.
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| TWI719232B (en) * | 2017-07-31 | 2021-02-21 | 大陸商信泰光學（深圳）有限公司 | Wide-angle lens assembly |
| CN109324394B (en) | 2017-07-31 | 2021-02-05 | 信泰光学(深圳)有限公司 | Wide-angle lens |
| CN109901277B (en) * | 2017-12-08 | 2021-06-01 | 大立光电股份有限公司 | Electronic device |
| TWI710794B (en) * | 2020-03-30 | 2020-11-21 | 大立光電股份有限公司 | Imaging optical lens assembly, imaging apparatus and electronic device |
| CN111290106B (en) * | 2020-05-07 | 2020-08-14 | 江西联益光学有限公司 | Optical lens and imaging apparatus |
| CN116449545B (en) * | 2023-06-15 | 2023-09-19 | 江西欧菲光学有限公司 | Optical lens, camera module and terminal equipment |
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| CN109975959A (en) | 2019-07-05 |
| CN106680966B (en) | 2019-06-18 |
| CN106680966A (en) | 2017-05-17 |
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