CN110737076B - Image pickup optical lens - Google Patents
Image pickup optical lens Download PDFInfo
- Publication number
- CN110737076B CN110737076B CN201911156034.9A CN201911156034A CN110737076B CN 110737076 B CN110737076 B CN 110737076B CN 201911156034 A CN201911156034 A CN 201911156034A CN 110737076 B CN110737076 B CN 110737076B
- Authority
- CN
- China
- Prior art keywords
- lens
- image
- optical lens
- ttl
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention relates to the field of optical lenses, and discloses an image pickup optical lens, which sequentially comprises the following components from an object side to an image side: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power, a fourth lens element with negative refractive power, and a fifth lens element with negative refractive power; and satisfies the following relationships: -0.80 ≤ (R1+ R2)/(R1-R2) ≤ 0.30; (R3+ R4)/(R3-R4) is not more than 0.01 but not more than 0.04; (R5+ R6)/(R5-R6) is not more than 0.50 and not more than 1.50; d4/f is more than or equal to 0.13 and less than or equal to 0.18; f5/f is not less than 7.40 and not more than-5.40. The shooting optical lens provided by the invention has good optical performance, and meets the design requirements of large aperture, long focal length and ultra-thin thickness.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of optical lenses, and more particularly, to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging apparatuses such as monitors and PC lenses.
[ background of the invention ]
In recent years, with the rise of smart phones, the demand of miniaturized camera lenses is increasing, and the photosensitive devices of general camera lenses are not limited to two types, namely, a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Device, and due to the refinement of Semiconductor manufacturing technology, the pixel size of the photosensitive devices is reduced, and in addition, the current electronic products are developed in a form of being excellent in function, light, thin, short and small, so that the miniaturized camera lenses with good imaging quality are the mainstream in the current market.
In order to obtain better imaging quality, the lens mounted on the mobile phone camera conventionally adopts a three-piece or four-piece lens structure. However, with the development of technology and the increase of diversified demands of users, under the condition that the pixel area of the photosensitive device is continuously reduced and the requirement of the system for the imaging quality is continuously improved, the five-piece lens structure gradually appears in the lens design, although the common five-piece lens has good optical performance, the focal power, the lens interval and the lens shape setting still have certain irrationality, so that the design requirements of large aperture, ultra-thin and long focal length can not be met while the lens structure has good optical performance.
[ summary of the invention ]
In view of the above problems, an object of the present invention is to provide an imaging optical lens that has good optical performance and satisfies the design requirements of large aperture, ultra-thin, and long focal length.
To solve the above-mentioned problems, the present invention provides an imaging optical lens, in order from an object side to an image side, comprising: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power, a fourth lens element with negative refractive power, and a fifth lens element with negative refractive power;
the curvature radius of the object side surface of the first lens is R1, the curvature radius of the image side surface of the first lens is R2, the curvature radius of the object side surface of the second lens is R3, the curvature radius of the image side surface of the second lens is R4, the curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, the focal length of the imaging optical lens is f, the focal length of the fifth lens is f5, and the following relational expressions are satisfied:
-0.80≤(R1+R2)/(R1-R2)≤-0.30；
0.01≤(R3+R4)/(R3-R4)≤0.04；
0.50≤(R5+R6)/(R5-R6)≤1.50；
0.13≤d4/f≤0.18；
-7.40≤f5/f≤-5.40。
preferably, an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens is d6, an on-axis thickness of the fourth lens is d7, and the following relationship is satisfied:
0.15≤d6/d7≤0.25。
preferably, the focal length of the first lens is f1, the on-axis thickness of the first lens is d1, the total optical length of the imaging optical lens is TTL, and the following relation is satisfied:
0.21≤f1/f≤0.67；
0.08≤d1/TTL≤0.26。
preferably, the focal length of the second lens is f2, the on-axis thickness of the second lens is d3, the total optical length of the imaging optical lens is TTL, and the following relation is satisfied:
-1.13≤f2/f≤-0.33；
0.01≤d3/TTL≤0.04。
preferably, the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, and the following relation is satisfied:
0.35≤f3/f≤1.22；
0.02≤d5/TTL≤0.09。
preferably, the focal length of the fourth lens element is f4, the radius of curvature of the object-side surface of the fourth lens element is R7, the radius of curvature of the image-side surface of the fourth lens element is R8, the on-axis thickness of the fourth lens element is d7, the total optical length of the image pickup optical lens is TTL, and the following relationships are satisfied:
-1.28≤f4/f≤-0.35；
0.81≤(R7+R8)/(R7-R8)≤3.11；
0.01≤d7/TTL≤0.06。
preferably, the curvature radius of the object-side surface of the fifth lens element is R9, the curvature radius of the image-side surface of the fifth lens element is R10, the on-axis thickness of the fifth lens element is d9, and the total optical length of the imaging optical lens system is TTL and satisfies the following relationship:
-19.01≤(R9+R10)/(R9-R10)≤-4.69；
0.04≤d9/TTL≤0.15。
preferably, the total optical length of the image pickup optical lens is TTL, and satisfies the following relation: TTL/f is less than or equal to 0.89.
Preferably, the image height of the imaging optical lens is IH, and the following relation is satisfied: f/IH is more than or equal to 4.30.
Preferably, the aperture of the image pickup optical lens is Fno, and the following relationship is satisfied: fno is less than or equal to 2.25.
The invention has the advantages that the pick-up optical lens has good optical performance, has the characteristics of large aperture, long focal length and ultra-thin thickness, and is particularly suitable for a mobile phone pick-up lens component and a WEB pick-up lens which are composed of pick-up elements such as CCD, CMOS and the like for high pixels.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic configuration diagram of an imaging optical lens according to a first embodiment;
fig. 2 is a schematic view of axial aberrations of the image-taking optical lens shown in fig. 1;
fig. 3 is a schematic diagram of chromatic aberration of magnification of the imaging optical lens shown in fig. 1;
FIG. 4 is a schematic view of curvature of field and distortion of the imaging optical lens shown in FIG. 1;
fig. 5 is a schematic configuration diagram of an imaging optical lens according to a second embodiment;
fig. 6 is a schematic view of axial aberrations of the image pickup optical lens shown in fig. 5;
fig. 7 is a schematic diagram of chromatic aberration of magnification of the imaging optical lens shown in fig. 5;
FIG. 8 is a schematic view of curvature of field and distortion of the imaging optical lens shown in FIG. 5;
fig. 9 is a schematic configuration diagram of an imaging optical lens according to a third embodiment;
fig. 10 is a schematic view of axial aberrations of the image pickup optical lens shown in fig. 9;
fig. 11 is a schematic diagram of chromatic aberration of magnification of the imaging optical lens shown in fig. 9;
fig. 12 is a schematic view of curvature of field and distortion of the imaging optical lens shown in fig. 9.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.
(first embodiment)
Referring to the drawings, the present invention provides an image pickup optical lens 10. Fig. 1 shows an imaging optical lens 10 according to a first embodiment of the present invention, and the imaging optical lens 10 includes eight lenses. Specifically, the imaging optical lens 10, in order from an object side to an image side, includes: the stop S1, the first lens element L1 with positive refractive power, the second lens element L2 with negative refractive power, the third lens element L3 with positive refractive power, the fourth lens element L4 with negative refractive power, and the fifth lens element L5 with negative refractive power. An optical element such as an optical filter (filter) GF may be disposed between the fifth lens L5 and the image plane Si.
In the present embodiment, the curvature radius of the object-side surface of the first lens L1 is defined as R1, and the curvature radius of the image-side surface of the first lens L1 is defined as R2, which satisfy the following relation: -0.80 ≦ (R1+ R2)/(R1-R2) ≦ -0.30, defines the shape of the first lens L1, and facilitates the system spherical aberration correction and improves the imaging quality within the conditional expression range.
The curvature radius of the object side surface of the second lens L2 is R3, the curvature radius of the image side surface of the second lens L2 is R4, and the following relational expression is satisfied: the ratio of (R3+ R4)/(R3-R4) is not more than 0.01 and not more than 0.04, the shape of the second lens L2 is regulated, and the sensitivity of the second lens L2 is low in a conditional expression range, so that the production yield is improved.
The curvature radius of the object side surface of the third lens L3 is R5, the curvature radius of the image side surface of the third lens L3 is R6, and the following relational expression is satisfied: the shape of the third lens L3 is regulated to be not less than 0.50 and not more than (R5+ R6)/(R5-R6) and not more than 1.50, and the deflection degree of light rays passing through the lens can be alleviated within the range of the conditional expression, so that the aberration can be effectively reduced.
An on-axis distance d4 from an image-side surface of the second lens L2 to an object-side surface of the third lens L3, a focal length f of the imaging optical lens 10, and the following relationship: 0.13. ltoreq. d 4/f. ltoreq.0.18, specifies the ratio of the on-axis distance d4 from the image-side surface of the second lens L2 to the object-side surface of the third lens L3 to the focal length f of the imaging optical lens 10, and contributes to the lens assembly within the condition range.
The focal length of the fifth lens L5 is f5, and the following relation is satisfied: f5/f is not less than 7.40 and not more than-5.40, the ratio of the focal length f5 of the fifth lens L5 to the focal length f of the shooting optical lens 10 is specified, and the method is favorable for correcting the curvature of field of the system and improving the imaging quality within the range of a conditional expression.
An on-axis distance of an image-side surface of the third lens L3 to an object-side surface of the fourth lens L4 is defined as d6, an on-axis thickness of the fourth lens L4 is defined as d7, and the following relationship is satisfied: d6/d7 is more than or equal to 0.15 and less than or equal to 0.25. The ratio of the on-axis distance d6 from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4 to the on-axis thickness d7 of the fourth lens L4 is defined, and contributes to the processing of the lens and the assembly of the lens barrel within the condition range.
Defining the focal length of the first lens L1 as f1, the following relation is satisfied: f1/f is 0.21 ≦ 0.67, and the ratio of the focal length f1 of the first lens L1 to the focal length f of the imaging optical lens 10 is specified. In the conditional range, the first lens element L1 has a proper positive refractive power, which is beneficial to reducing system aberration and is beneficial to the development of ultra-thinning and wide-angle lens.
The total optical length of the imaging optical lens 10 is TTL, and the on-axis thickness of the first lens L1 is d1, which satisfies the following relation: d1/TTL is more than or equal to 0.08 and less than or equal to 0.26, and ultra-thinning is facilitated in the conditional expression range.
Defining the focal length of the second lens L2 as f2, the following relation is satisfied: f2/f 0.33 of-1.13, the ratio of the focal length f2 of the second lens to the focal length f of the image pickup optical lens 10 is specified, and within the conditional expression range, by controlling the negative power of the second lens L2 within a reasonable range, it is advantageous to correct the aberration of the optical system.
The on-axis thickness of the second lens L2 is d3, and the following relation is satisfied: d3/TTL is more than or equal to 0.01 and less than or equal to 0.04, and ultra-thinning is favorably realized within the range of conditional expressions.
Defining the focal length of the third lens L3 as f3, the following relation is satisfied: f3/f is more than or equal to 0.35 and less than or equal to 1.22, the ratio of the focal length f3 of the third lens L3 to the focal length f of the image pickup optical lens 10 is specified, and the system has better imaging quality and lower sensitivity through reasonable distribution of focal power within a conditional expression range.
The third lens L3 has an on-axis thickness d5, and satisfies the following relation: d5/TTL is more than or equal to 0.02 and less than or equal to 0.09, and ultra-thinning is favorably realized within the range of conditional expressions.
Defining the focal length of the fourth lens L4 as f4, the following relation is satisfied: f4/f is less than or equal to 1.28 and less than or equal to-0.35, the ratio of the focal length f4 of the fourth lens L4 to the focal length f of the image pickup optical lens 10 is specified, and the optical system performance is improved within the conditional expression range.
The curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8, and the following relational expression is satisfied: not less than 0.81 (R7+ R8)/(R7-R8) not more than 3.11. The shape of the fourth lens L4 is defined, and it is advantageous to correct the problem of aberration of the off-axis view angle and the like as the thickness becomes thinner and the angle becomes wider within the conditional expression.
The on-axis thickness of the fourth lens L4 is d7, and the following relation is satisfied: d7/TTL is more than or equal to 0.01 and less than or equal to 0.06, and ultra-thinning is facilitated in the conditional expression range.
The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10, and the following relational expressions are satisfied: the shape of the fifth lens L5 is determined to be not less than 19.01 (R9+ R10)/(R9-R10) and not more than-4.69, and the problems such as aberration of off-axis picture angle and the like are favorably corrected along with the development of ultra-thin wide-angle under the condition range.
The on-axis thickness of the fifth lens L5 is d9, and the following relation is satisfied: d9/TTL is more than or equal to 0.04 and less than or equal to 0.15, and ultra-thinning is facilitated in the condition formula range.
Defining the total optical length of the image pickup optical lens as TTL, and satisfying the following relational expression: TTL/f is less than or equal to 0.89, and ultra-thinning is facilitated.
Defining the image height of the image pickup optical lens as IH, and satisfying the following relational expression: f/IH is more than or equal to 4.30, which is beneficial to realizing long focal length.
Defining the diaphragm of the image pickup optical lens as Fno, and satisfying the following relational expression: fno is less than or equal to 2.25, which is beneficial to realizing large aperture and ensures good imaging performance.
That is, when the above relationship is satisfied, the imaging optical lens 10 can satisfy the design requirements of a large aperture, a long focal length, and an ultra-thin film while having a good optical imaging performance; in accordance with the characteristics of the imaging optical lens 10, the imaging optical lens 10 is particularly suitable for a mobile phone imaging lens module and a WEB imaging lens which are configured by an imaging element such as a high-pixel CCD or a CMOS.
The image pickup optical lens 10 of the present invention will be explained below by way of example. The symbols described in the respective examples are as follows. The unit of focal length, on-axis distance, curvature radius, on-axis thickness, position of reverse curvature and position of stagnation point is mm.
TTL (total optical length) (on-axis distance from the object side surface of the first lens L1 to the image plane Si) in mm;
preferably, the object side surface and/or the image side surface of the lens may be further provided with an inflection point and/or a stagnation point to meet the requirement of high-quality imaging.
Tables 1 and 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.
[ TABLE 1 ]
Wherein each symbol has the following meaning.
S1: an aperture;
r: the radius of curvature of the optical surface and the radius of curvature of the lens as the center;
r1: the radius of curvature of the object-side surface of the first lens L1;
r2: the radius of curvature of the image-side surface of the first lens L1;
r3: the radius of curvature of the object-side surface of the second lens L2;
r4: the radius of curvature of the image-side surface of the second lens L2;
r5: the radius of curvature of the object-side surface of the third lens L3;
r6: the radius of curvature of the image-side surface of the third lens L3;
r7: the radius of curvature of the object-side surface of the fourth lens L4;
r8: the radius of curvature of the image-side surface of the fourth lens L4;
r9: a radius of curvature of the object side surface of the fifth lens L5;
r10: a radius of curvature of the image-side surface of the fifth lens L5;
r11: radius of curvature of the object side of the optical filter GF;
r12: the radius of curvature of the image-side surface of the optical filter GF;
d: an on-axis thickness of the lenses and an on-axis distance between the lenses;
d 0: the on-axis distance of the stop S1 to the object-side surface of the first lens L1;
d 1: the on-axis thickness of the first lens L1;
d 2: the on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;
d 3: the on-axis thickness of the second lens L2;
d 4: the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;
d 5: the on-axis thickness of the third lens L3;
d 6: the on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;
d 7: the on-axis thickness of the fourth lens L4;
d 8: an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5;
d 9: the on-axis thickness of the fifth lens L5;
d 10: the on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the optical filter GF;
d 11: on-axis thickness of the optical filter GF;
d 12: the on-axis distance from the image side surface of the optical filter GF to the image surface;
nd: the refractive index of the d-line;
nd 1: the refractive index of the d-line of the first lens L1;
nd 2: the refractive index of the d-line of the second lens L2;
nd 3: the refractive index of the d-line of the third lens L3;
nd 4: the refractive index of the d-line of the fourth lens L4;
nd 5: the refractive index of the d-line of the fifth lens L5;
ndg: the refractive index of the d-line of the optical filter GF;
v d: an Abbe number;
v 1: abbe number of the first lens L1;
v 2: abbe number of the second lens L2;
v 3: abbe number of the third lens L3;
v 4: abbe number of the fourth lens L4;
v 5: abbe number of the fifth lens L5;
v g: abbe number of the optical filter GF.
Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.
[ TABLE 2 ]
Wherein k is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16 are aspheric coefficients.
y＝(x2/R)/[1+{1-(k+1)(x2/R2)}1/2]+A4x4+A6x6+A8x8+A10x10+A12x12+A14x14+A16x16 (1)
For convenience, the aspherical surface of each lens surface uses the aspherical surface shown in the above formula (1). However, the present invention is not limited to the aspherical polynomial form expressed by this formula (1).
Tables 3 and 4 show the inflection point and stagnation point design data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention. P1R1 and P1R2 represent the object-side surface and the image-side surface of the first lens L1, P2R1 and P2R2 represent the object-side surface and the image-side surface of the second lens L2, P3R1 and P3R2 represent the object-side surface and the image-side surface of the third lens L3, P4R1 and P4R2 represent the object-side surface and the image-side surface of the fourth lens L4, and P5R1 and P5R2 represent the object-side surface and the image-side surface of the fifth lens L5, respectively. The "inflection point position" field correspondence data is a vertical distance from an inflection point set on each lens surface to the optical axis of the image pickup optical lens 10. The "stagnation point position" field corresponding data is the vertical distance from the stagnation point set on each lens surface to the optical axis of the imaging optical lens 10.
[ TABLE 3 ]
[ TABLE 4 ]
| Number of stagnation points | Location of stagnation 1 | |
| |
0 | 0 |
| |
0 | 0 |
| P2R1 | 1 | 1.575 |
| |
0 | 0 |
| P3R1 | 1 | 0.415 |
| |
0 | 0 |
| P4R1 | 1 | 0.375 |
| |
0 | 0 |
| |
0 | 0 |
| |
0 | 0 |
Fig. 2 and 3 are schematic diagrams showing axial aberrations and chromatic aberration of magnification of light having wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm, respectively, after passing through the imaging optical lens 10 according to the first embodiment. Fig. 4 is a schematic view showing curvature of field and distortion of light having a wavelength of 555nm after passing through the imaging optical lens 10 according to the first embodiment, where S is curvature of field in the sagittal direction and T is curvature of field in the tangential direction in fig. 4.
Table 13 shown later shows values corresponding to the parameters defined in the conditional expressions, for each of the numerical values in the first, second, third, and fourth embodiments.
As shown in table 13, the first embodiment satisfies each conditional expression.
In the present embodiment, the imaging optical lens 10 has an entrance pupil diameter of 3.969mm, a full field image height of 2.040mm, and a diagonal field angle of 25.46 °, so that the imaging optical lens 10 is ultra-thin, has a large aperture and a long focal length, and has excellent optical characteristics with on-axis and off-axis chromatic aberration sufficiently corrected.
(second embodiment)
The second embodiment is basically the same as the first embodiment, and the reference numerals are the same as those in the first embodiment, and the configuration of the image pickup optical lens 20 of the second embodiment is shown in fig. 5, and only the differences will be described below.
Tables 5 and 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.
[ TABLE 5 ]
Table 6 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
[ TABLE 6 ]
Tables 7 and 8 show the inflection point and stagnation point design data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.
[ TABLE 7 ]
| Number of points of inflection | Position of reverse curvature 1 | Position of reverse curvature 2 | Position of reverse curvature 3 | |
| |
0 | 0 | 0 | 0 |
| P1R2 | 1 | 0.995 | 0 | 0 |
| P2R1 | 1 | 0.655 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| P4R1 | 3 | 0.195 | 1.095 | 1.535 |
| P4R2 | 2 | 0.565 | 0.945 | 0 |
| P5R1 | 1 | 1.695 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
[ TABLE 8 ]
Fig. 6 and 7 are schematic diagrams showing axial aberrations and chromatic aberration of magnification of light having wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm, respectively, after passing through the imaging optical lens 20 according to the second embodiment. Fig. 8 is a schematic view showing curvature of field and distortion of light having a wavelength of 555nm after passing through the imaging optical lens 20 according to the second embodiment.
Table 13 below shows the numerical values corresponding to the respective conditional expressions in the present embodiment, in accordance with the conditional expressions described above. Obviously, the imaging optical lens of the present embodiment satisfies the above conditional expressions.
In the present embodiment, the imaging optical lens has an entrance pupil diameter of 3.969mm, a full field image height of 2.040mm, and a diagonal field angle of 25.86 °, so that the imaging optical lens 20 is ultra-thin, has a large aperture and a long focal length, and has excellent optical characteristics with on-axis and off-axis chromatic aberration sufficiently corrected.
(third embodiment)
The third embodiment is basically the same as the first embodiment, and the reference numerals are the same as those in the first embodiment, and the configuration of the imaging optical lens 30 of the third embodiment is shown in fig. 9, and only the differences will be described below.
Tables 9 and 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.
[ TABLE 9 ]
Table 10 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
[ TABLE 10 ]
Tables 11 and 12 show the inflection points and the stagnation point design data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.
[ TABLE 11 ]
[ TABLE 12 ]
| Number of stagnation points | Location of stagnation 1 | Location of stagnation 2 | Location of stagnation 3 | |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| P3R1 | 1 | 0.625 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| P4R1 | 3 | 0.545 | 1.215 | 1.285 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
| |
0 | 0 | 0 | 0 |
Fig. 10 and 11 are schematic diagrams showing axial aberrations and chromatic aberration of magnification of light having wavelengths of 470nm, 510nm, 555nm, 610nm, and 650nm, respectively, after passing through the imaging optical lens 30 according to the third embodiment. Fig. 12 is a schematic view showing curvature of field and distortion of light having a wavelength of 555nm after passing through the imaging optical lens 30 according to the third embodiment.
Table 13 below shows the numerical values corresponding to the respective conditional expressions in the present embodiment, in accordance with the conditional expressions described above. Obviously, the imaging optical lens of the present embodiment satisfies the above conditional expressions.
In the present embodiment, the imaging optical lens has an entrance pupil diameter of 3.969mm, a full field image height of 2.040mm, and a diagonal field angle of 25.46 °, so that the imaging optical lens 30 is ultra-thin, has a large aperture and a long focal length, and has excellent optical characteristics with on-axis and off-axis chromatic aberration sufficiently corrected.
[ TABLE 13 ]
| Parameter and condition formula | Embodiment mode 1 | Embodiment mode 2 | Embodiment 3 |
| f | 8.850 | 8.850 | 8.850 |
| f1 | 3.733 | 3.942 | 3.647 |
| f2 | -4.327 | -4.785 | -5.007 |
| f3 | 6.216 | 7.218 | 6.904 |
| f4 | -5.106 | -5.649 | -4.654 |
| f5 | -56.640 | -64.100 | -47.878 |
| f12 | 8.101 | 8.021 | 7.254 |
| (R1+R2)/(R1-R2) | -0.581 | -0.790 | -0.410 |
| (R3+R4)/(R3-R4) | 0.026 | 0.039 | 0.011 |
| (R5+R6)/(R5-R6) | 0.892 | 1.322 | 0.510 |
| d4/f | 0.154 | 0.179 | 0.158 |
| f5/f | -6.400 | -7.243 | -5.410 |
| Fno | 2.23 | 2.23 | 2.23 |
Where Fno is the aperture of the imaging optical lens.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific embodiments for practicing the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. An imaging optical lens, in order from an object side to an image side, comprising: a first lens element with positive refractive power, a second lens element with negative refractive power, a third lens element with positive refractive power, a fourth lens element with negative refractive power, and a fifth lens element with negative refractive power;
the curvature radius of the object side surface of the first lens is R1, the curvature radius of the image side surface of the first lens is R2, the curvature radius of the object side surface of the second lens is R3, the curvature radius of the image side surface of the second lens is R4, the curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, the focal length of the imaging optical lens is f, the focal length of the fifth lens is f5, and the following relational expressions are satisfied:
-0.80≤(R1+R2)/(R1-R2)≤-0.30；
0.01≤(R3+R4)/(R3-R4)≤0.04；
0.50≤(R5+R6)/(R5-R6)≤1.50；
0.13≤d4/f≤0.18；
-7.40≤f5/f≤-5.40。
2. the imaging optical lens of claim 1, wherein an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens is d6, an on-axis thickness of the fourth lens is d7, and the following relationship is satisfied:
0.15≤d6/d7≤0.25。
3. the image-capturing optical lens of claim 1, wherein the first lens has a focal length f1, an on-axis thickness d1, and an optical total length TTL that satisfies the following relationship:
0.21≤f1/f≤0.67；
0.08≤d1/TTL≤0.26。
4. the image-capturing optical lens of claim 1, wherein the second lens has a focal length f2, an on-axis thickness d3, and an optical total length TTL that satisfies the following relationship:
-1.13≤f2/f≤-0.33；
0.01≤d3/TTL≤0.04。
5. the image-capturing optical lens of claim 1, wherein the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, the total optical length of the image-capturing optical lens is TTL, and the following relationship is satisfied:
0.35≤f3/f≤1.22；
0.02≤d5/TTL≤0.09。
6. the image-capturing optical lens unit according to claim 1, wherein the fourth lens element has a focal length f4, a radius of curvature of an object-side surface of the fourth lens element is R7, a radius of curvature of an image-side surface of the fourth lens element is R8, an on-axis thickness of the fourth lens element is d7, an optical total length of the image-capturing optical lens unit is TTL, and the following relationship is satisfied:
-1.28≤f4/f≤-0.35；
0.81≤(R7+R8)/(R7-R8)≤3.11；
0.01≤d7/TTL≤0.06。
7. the image-capturing optical lens unit according to claim 1, wherein the curvature radius of the object-side surface of the fifth lens element is R9, the curvature radius of the image-side surface of the fifth lens element is R10, the on-axis thickness of the fifth lens element is d9, the total optical length of the image-capturing optical lens unit is TTL, and the following relationships are satisfied:
-19.01≤(R9+R10)/(R9-R10)≤-4.69；
0.04≤d9/TTL≤0.15。
8. a camera optical lens according to claim 1, wherein the total optical length of the camera optical lens is TTL and satisfies the following relation: TTL/f is less than or equal to 0.89.
9. An imaging optical lens according to claim 1, wherein the image height of the imaging optical lens is IH and satisfies the following relation: f/IH is more than or equal to 4.30.
10. An image-capturing optical lens according to claim 1, characterized in that the aperture of the image-capturing optical lens is Fno and satisfies the following relation: fno is less than or equal to 2.25.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156034.9A CN110737076B (en) | 2019-11-22 | 2019-11-22 | Image pickup optical lens |
| PCT/CN2019/123897 WO2021097952A1 (en) | 2019-11-22 | 2019-12-09 | Camera optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156034.9A CN110737076B (en) | 2019-11-22 | 2019-11-22 | Image pickup optical lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110737076A CN110737076A (en) | 2020-01-31 |
| CN110737076B true CN110737076B (en) | 2021-01-08 |
Family
ID=69273642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156034.9A Active CN110737076B (en) | 2019-11-22 | 2019-11-22 | Image pickup optical lens |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110737076B (en) |
| WO (1) | WO2021097952A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538139B (en) * | 2020-07-13 | 2020-10-16 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
| CN111679413B (en) * | 2020-08-12 | 2020-10-30 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
| CN111679411B (en) * | 2020-08-12 | 2020-11-06 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110304928A1 (en) * | 2010-06-14 | 2011-12-15 | Olympus Corporation | Image pickup optical system and image pickup apparatus using the same |
| CN103412396A (en) * | 2013-04-12 | 2013-11-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device using same |
| CN103454753A (en) * | 2012-05-28 | 2013-12-18 | 大立光电股份有限公司 | Image pickup optical lens system |
| CN204536635U (en) * | 2014-05-08 | 2015-08-05 | 康达智株式会社 | The pick-up lens that 6 pieces of optical elements are formed |
| CN105607227A (en) * | 2014-11-19 | 2016-05-25 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106950680A (en) * | 2016-09-30 | 2017-07-14 | 瑞声科技(新加坡)有限公司 | Pick-up lens |
-
2019
- 2019-11-22 CN CN201911156034.9A patent/CN110737076B/en active Active
- 2019-12-09 WO PCT/CN2019/123897 patent/WO2021097952A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110304928A1 (en) * | 2010-06-14 | 2011-12-15 | Olympus Corporation | Image pickup optical system and image pickup apparatus using the same |
| CN103454753A (en) * | 2012-05-28 | 2013-12-18 | 大立光电股份有限公司 | Image pickup optical lens system |
| CN103412396A (en) * | 2013-04-12 | 2013-11-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device using same |
| CN204536635U (en) * | 2014-05-08 | 2015-08-05 | 康达智株式会社 | The pick-up lens that 6 pieces of optical elements are formed |
| CN105607227A (en) * | 2014-11-19 | 2016-05-25 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106950680A (en) * | 2016-09-30 | 2017-07-14 | 瑞声科技(新加坡)有限公司 | Pick-up lens |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021097952A1 (en) | 2021-05-27 |
| CN110737076A (en) | 2020-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110488463B (en) | Image pickup optical lens | |
| CN110361842B (en) | Image pickup optical lens | |
| CN110221410B (en) | Image pickup optical lens | |
| CN110596859B (en) | Image pickup optical lens | |
| CN110412736B (en) | Image pickup optical lens | |
| CN110515178B (en) | Image pickup optical lens | |
| CN110412737B (en) | Image pickup optical lens | |
| CN111077641B (en) | Image pickup optical lens | |
| CN110488462B (en) | Image pickup optical lens | |
| CN110361841B (en) | Image pickup optical lens | |
| CN110221411B (en) | Image pickup optical lens | |
| CN110488464B (en) | Image pickup optical lens | |
| CN110221409B (en) | Image pickup optical lens | |
| CN110398819B (en) | Image pickup optical lens | |
| CN110361839B (en) | Image pickup optical lens | |
| CN110398821B (en) | Image pickup optical lens | |
| CN110737076B (en) | Image pickup optical lens | |
| CN111221104B (en) | Image pickup optical lens | |
| CN111142218B (en) | Image pickup optical lens | |
| CN110262008B (en) | Image pickup optical lens | |
| CN110297316B (en) | Image pickup optical lens | |
| CN111929824B (en) | Image pickup optical lens | |
| CN111025541B (en) | Image pickup optical lens | |
| CN111158113B (en) | Image pickup optical lens | |
| CN111025547B (en) | Image pickup optical lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 213000 Xinwei 1st Road, Changzhou Comprehensive Bonded Zone, Jiangsu Province Applicant after: Chengrui optics (Changzhou) Co., Ltd Address before: 213000 Xinwei Road, Changzhou Export Processing Zone, Jiangsu Province Applicant before: Ruisheng Communication Technology (Changzhou) Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |