CN212749357U - Periscopic high-resolution lens with small head - Google Patents
Periscopic high-resolution lens with small head Download PDFInfo
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- CN212749357U CN212749357U CN202021870385.4U CN202021870385U CN212749357U CN 212749357 U CN212749357 U CN 212749357U CN 202021870385 U CN202021870385 U CN 202021870385U CN 212749357 U CN212749357 U CN 212749357U
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Abstract
The utility model relates to a high resolution power camera lens of periscopic microcephaly, its technical essential is, contains according to the preface by thing side to picture side: a first lens element with negative refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis; a diaphragm; a second lens element with positive refractive power having a convex image-side surface at an optical axis; the reflecting surface and the optical axis form an included angle of 45 degrees; a third lens element with negative refractive power having an image-side surface which is concave at an optical axis and at least one surface which is aspheric; a fourth lens element with positive refractive power having a convex image-side surface along an optical axis and at least one aspheric surface; a fifth lens element with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region; and a sixth lens element with negative refractive power, wherein the sixth lens element has an M-shaped configuration and a convex object-side surface at an optical axis. Not only the head size is little, effectively promotes the screen and accounts for the ratio, has higher analytic power moreover, can shoot comparatively clear image, satisfies the miniaturized requirement of camera lens simultaneously.
Description
Technical Field
The utility model relates to an optical system, concretely relates to high analysis power camera lens of periscope formula microcephaly.
Background
In recent years, with the rapid development of mobile phone shooting technology, some high-performance mobile phone cameras gradually appear in the market, which are not only miniaturized, but also can shoot clearer images.
However, with the development of a full-screen mobile phone, the larger screen occupation ratio is gradually reducing the size of the head of the mobile phone lens, and in order to meet the size of the head of the lens, the common measures include reducing the optical effective diameter of the lens to reduce the size of the head of the lens and thickening the size of the first lens to achieve the smaller size of the head, and such an operation may affect the imaging quality of the lens. To reduce the influence of this part, the total optical height of the lens needs to be as long as possible, which, however, affects the miniaturization of the lens.
Disclosure of Invention
The utility model aims at providing a periscopic high resolution power camera lens of microcephaly that constitutes by six lens and a prism, not only the head size is little, effectively promotes the screen and accounts for than, has higher resolution power moreover, can shoot comparatively clear image, satisfies the miniaturized requirement of camera lens simultaneously.
The technical scheme of the utility model is that:
a periscopic lens with high resolution of small head comprises, in order from object side to image side:
a first lens element with negative refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis;
a diaphragm;
a second lens element with positive refractive power having a convex image-side surface at an optical axis;
the reflecting surface and the optical axis form an included angle of 45 degrees;
a third lens element with negative refractive power having an image-side surface which is concave at an optical axis and at least one surface which is aspheric;
a fourth lens element with positive refractive power having a convex image-side surface along an optical axis and at least one aspheric surface;
a fifth lens element with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region;
a sixth lens element with negative refractive power and an M-shaped object-side surface being convex at an optical axis;
the following conditional expressions are satisfied:
n1>1.66
R1/R2>0.55
where n1 is the refractive index of the material of the first lens, R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
-7<F1/F2<-2
wherein F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens. After the conditions are met, the lens can have higher resolving power, and the lens has higher shooting quality.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
Sag31/Sd3〉0
wherein Sag31 is the edge rise of the object side surface of the third lens, and Sd3 is the effective diameter of the edge of the third lens. The assembling difficulty of the third lens can be effectively reduced after the conditions are met, so that the assembling yield of the lens is improved.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
(V1+V2)/2>30
wherein V1 is the abbe number of the first lens, and V2 is the abbe number of the second lens. The lens head size can be further reduced after this condition is satisfied.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
SD3/IMAG<0.4
where SD3 is the outer diameter of the third lens and IMAG is the half image height of the lens. The size of the head of the lens can be effectively reduced after the condition is met.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
-13<R10/R11<6
wherein R10 is the curvature radius of the object-side surface of the fifth lens, and R11 is the curvature radius of the image-side surface of the fifth lens. After the conditions are met, the influence of astigmatism on the lens can be reduced, and the shooting quality of the lens is improved.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
YC61/YC62<0.5
wherein YC61 is a distance from an inflection point on an object-side off-axis surface of the sixth lens to the optical axis; YC62 is a distance from an inflection point on an image-side axis surface of the sixth lens element to the optical axis. The lens can reduce the influence of distortion on lens imaging after meeting the requirements, thereby improving the imaging quality of the lens.
The high-resolution lens of the periscopic small head further meets the following conditional expression:
-9<F1/F<-2
wherein F1 is the effective focal length of the first lens, and F is the effective focal length of the lens. The lens barrel can further reduce the head size after this condition is satisfied.
In the high-resolution lens of the periscopic small head, the object-side surface and the image-side surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspheric surfaces, and aspheric coefficients satisfy the following equation:
Z＝cy2/[1+{1－(1+k)c2 y2}+1/2]+A4y4+A6y6+A8y8 +A10y10+A12y12+A14y14+A16y16
wherein Z is aspheric sagittal height, c is aspheric paraxial curvature, y is lens caliber, k is cone coefficient, A4Is a 4-order aspheric coefficient, A6Is a 6-degree aspheric surface coefficient, A8Is an 8 th order aspheric surface coefficient, A10Is a 10 th order aspheric surface coefficient, A12Is a 12 th order aspheric surface coefficient, A14Is a 14 th order aspheric coefficient, A16Is a 16-degree aspheric coefficient.
The utility model has the advantages that:
the utility model discloses an optical system that six lenses and a prism constitute not only realizes the less head size of camera lens to through the mode of the periscope of prism, change light propagation path, promoted the analytic power of microcephaly camera lens, still reduced the height of lens cone, realize the miniaturization of camera lens, be applicable to most of smart mobile phones.
Drawings
Fig. 1 is a schematic two-dimensional structure diagram of a lens barrel according to embodiment 1 of the present invention;
fig. 2A is a MYF curve of a lens barrel according to embodiment 1 of the present invention;
fig. 2B is a distortion curve of the lens barrel according to embodiment 1 of the present invention;
fig. 2C is an astigmatism curve of a lens barrel according to embodiment 1 of the present invention;
fig. 3 is a schematic two-dimensional structure diagram of a lens barrel according to embodiment 2 of the present invention;
fig. 4A is a MYF curve of a lens barrel according to embodiment 2 of the present invention;
fig. 4B is a distortion curve of a lens barrel according to embodiment 2 of the present invention;
fig. 4C is an astigmatism curve of a lens barrel according to embodiment 2 of the present invention;
fig. 5 is a schematic two-dimensional structure diagram of a lens barrel according to embodiment 3 of the present invention;
fig. 6A is a MYF curve of the lens barrel according to embodiment 3 of the present invention;
fig. 6B is a distortion curve of a lens barrel according to embodiment 3 of the present invention;
fig. 6C is an astigmatism curve of a lens barrel according to embodiment 3 of the present invention.
In the figure: p1, a first lens, p2, a second lens, p3, a third lens, p4, a fourth lens, P5., a fifth lens, p6, a sixth lens, a stop, an ima imaging surface, and a PM prism;
1. the lens comprises a first lens object side surface, a second lens image side surface, a first lens image side surface, a second lens object side surface, a second lens image side surface, a prism light incident surface, a prism reflection surface, a prism light emergent surface, a third lens object side surface, a third lens image side surface, a fourth lens object side surface, a fourth lens image side surface, a fifth lens object side surface, a fifth lens image side surface, a fifth lens object side surface, a sixth lens image side surface and a sixth lens image side surface, wherein the first lens object.
Detailed Description
Example 1
As shown in fig. 1, the periscopic small-head high-resolution lens includes, in order from an object side to an image side: a first lens element P1 with negative refractive power having a concave object-side surface at the optical axis and a convex image-side surface at the optical axis; a diaphragm; a second lens element P2 with positive refractive power having a concave object-side surface at the optical axis and a convex image-side surface at the optical axis; the included angle between the reflecting surface and the optical axis is 45 degrees; a third lens element P3 with negative refractive power having a convex object-side surface and a concave image-side surface; a fourth lens element P4 with positive refractive power having a convex object-side surface and a convex image-side surface along the optical axis; a fifth lens element P5 with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region; the sixth lens element P6 with negative refractive power has an M-shaped configuration, and has a convex object-side surface and a concave image-side surface. The light rays pass through the first lens P1, the stop and the second lens P2, change the propagation direction of the light path at the prism PM, sequentially pass through the third lens P3, the fourth lens P4, the fifth lens P5 and the sixth lens P6, and finally are converged on the image surface. Each lens is a plastic lens.
In this embodiment, the periscopic small-head high-resolution lens further satisfies the following conditional expressions:
n1>1.66
R1/R2>0.55
-7<F1/F2<-2
Sag31/Sd3>0
(V1+V2)/2>30
SD3/IMAG<0.4
-13<R10/R11<6
YC61/YC62<0.5
-9<F1/F<-2
wherein n1 is a refractive index of a material of the first lens, R1 is a curvature radius of an object-side surface of the first lens, R2 is a curvature radius of an image-side surface of the first lens, F is an effective focal length of the lens, F1 is an effective focal length of the first lens, F2 is an effective focal length of the second lens, Sag31 is an edge rise of an object-side surface of the third lens, Sd3 is an effective diameter of an edge of the third lens, V1 is an abbe number of the first lens, V2 is an abbe number of the second lens, Sd3 is an outer diameter of the third lens, IMAG is a half height of the lens, R10 is a curvature radius of an object-side surface of the fifth lens, R11 is a curvature radius of an image-side surface of the fifth lens, and YC61 is a distance from an inflection point on an object-side surface of the sixth lens to an optical axis; YC62 is a distance from an inflection point on an image-side axis surface of the sixth lens element to the optical axis. The units of curvature radius, effective focal length, edge rise, effective diameter, outer diameter, half-image height and distance are all millimeters.
The object side surface and the image side surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspheric surfaces, and aspheric coefficients meet the following equation:
Z＝cy2/[1+{1－(1+k)c2 y2}+1/2]+A4y4+A6y6+A8y8 +A10y10+A12y12+A14y14+A16y16
wherein Z is aspheric sagittal height, c is aspheric paraxial curvature, y is lens caliber, k is cone coefficient, A4Is a 4-order aspheric coefficient, A6Is a 6-degree aspheric surface coefficient, A8Is an 8 th order aspheric surface coefficient, A10Is a 10 th order aspheric surface coefficient, A12Is a 12 th order aspheric surface coefficient, A14Is a 14 th order aspheric coefficient, A16Is a 16-degree aspheric coefficient.
In this embodiment, the design parameters of the six lenses and the prism refer to the following table: table one (a) shows the surface type, radius of curvature, thickness, and material of each lens and prism of the optical lens of example 1.
Watch 1 (a)
| Lens | Surface number | Surface type | Radius of curvature | Thickness of | Material Property (Nd: Vd) | |
| OBJ | | Inf | 400 | |||
| |
1 | Spherical surface | -2.822 | 0.85 | 1.6612.20.534 | |
| 2 | Aspherical surface | -3.728 | 0.16 | |||
| Stop | Aspherical surface | Inf | 0.08 | |||
| |
3 | Aspherical surface | -13.017 | 0.57 | 1.5445.55.987 | |
| 4 | Aspherical surface | -1.983 | 0.25 | |||
| |
5 | Spherical surface | Inf | 1.25 | TAF1_HOYA | |
| 6 | Spherical surface | Inf | -1.25 | TAF1_HOYA | ||
| 7 | Spherical surface | Inf | -0.14 | |||
| |
8 | Aspherical surface | -13.955 | -0.26 | 1.6612.20.534 | |
| 9 | Aspherical surface | -3.497 | -0.06 | |||
| |
10 | Aspherical surface | -12.368 | -0.62 | 1.5445.55.987 | |
| 11 | Aspherical surface | 9.622 | -0.13 | |||
| |
12 | Aspherical surface | -17.096 | -0.80 | 1.5445.55.987 | |
| 13 | Aspherical surface | 1.332 | -0.05 | |||
| |
14 | Aspherical surface | -1.384 | -0.35 | 1.6397.23.53 | |
| 15 | Aspherical surface | -0.633 | -1.07 | |||
| IMA |
Table one (b) shows aspherical coefficients of the respective lenses of the optical lens of example 1.
Watch 1 (b)
Constraint terms for each conditional are shown in table one (c):
watch 1 (c)
According to the table one (a), the table one (b) and fig. 1, the shape of the lens and the thickness of the material of the lens of the current embodiment are shown clearly, which illustrates that the current embodiment realizes the lens feature of smaller head size by adjusting the shape and the interval of the lens.
As shown clearly in the MTF in table one (c) and fig. 2A, after the lens meets the requirements of the claims, the MTF of the lens in the fields of view of 0F, 0.4F, 0.6F, 0.8F and 1.0F has a higher value, which indicates that the lens has good resolution and can capture a clear image.
As shown clearly in table (c) and the distortion curve in fig. 2B, after the lens meets the requirements of the claims, the distortion of the lens is less than 2.5%, which indicates that the lens has a good capability of improving distortion, and can present a clearer image.
As shown clearly in the conditions of the astigmatism curves in table (C) and fig. 2C, after the lens meets the requirements of the claims, the focus offset in the S/T direction of the lens is less than 0.05mm, which means that the lens can better improve the influence of astigmatism on the imaging of the lens, so as to capture a clear image.
According to the above information, it is demonstrated that the embodiment is characterized in that a smaller head size and a higher resolving power can be realized, and the influence of distortion and astigmatism can be reduced, and a clearer image can be presented.
Example 2
As shown in fig. 3, the periscopic small-head high-resolution lens includes, in order from an object side to an image side: a first lens element with negative refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis; a diaphragm; a second lens element with positive refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis; the reflecting surface and the optical axis form an included angle of 45 degrees; a third lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a fourth lens element with positive refractive power having convex object-side and image-side surfaces at optical axes; a fifth lens element with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region; and a sixth lens element with negative refractive power and M-shaped cross section, wherein the object-side surface is convex at the optical axis and the image-side surface is concave at the optical axis. After passing through the first lens, the diaphragm and the second lens, the light path transmission direction of the light rays at the prism is changed, and then the light rays sequentially pass through the third lens, the fourth lens, the fifth lens and the sixth lens and finally converge on an image surface after passing through the optical filter.
In this embodiment, the design parameters of the six lenses and the prism refer to the following table: table two (a) shows the surface type, radius of curvature, thickness, and material of each lens and prism of the optical lens of example 1.
Watch two (a)
| Lens | Surface number | Surface type | Radius of curvature | Thickness of | Material Property (Nd: Vd) |
| OBJ | Spherical surface | Inf | 400.00 | ||
| |
1 | Spherical surface | -2.418 | 0.50 | 1.6612.20.534 |
| 2 | Aspherical surface | -3.704 | 0.00 | ||
| Stop | Aspherical surface | Inf | 0.10 | ||
| |
3 | Aspherical surface | -12.381 | 0.85 | 1.5445.55.987 |
| 4 | Aspherical surface | -1.618 | 0.15 | ||
| |
5 | Spherical surface | Inf | 1.35 | TAF1_HOYA |
| 6 | Spherical surface | Inf | -1.35 | TAF1_HOYA | |
| 7 | Spherical surface | Inf | -0.05 | ||
| |
8 | Aspherical surface | -14.476 | -0.28 | 1.6612.20.534 |
| 9 | Aspherical surface | -4.108 | -0.15 | ||
| |
10 | Aspherical surface | -17.740 | -0.56 | 1.5445.55.987 |
| 11 | Aspherical surface | 135.974 | -0.05 | ||
| |
12 | Aspherical surface | 12.113 | -0.61 | 1.5445.55.987 |
| 13 | Aspherical surface | 2.368 | -0.05 | ||
| |
14 | Aspherical surface | -1.330 | -0.45 | 1.6397.23.53 |
| 15 | Aspherical surface | -0.853 | -0.62 | ||
| BK7 | 16 | Spherical surface | Inf | -0.21 | NBK7_SCHOTT |
| 17 | Spherical surface | Inf | -0.42 | ||
| IMA |
Table two (b) shows the aspherical coefficients of the respective lenses of the optical lens of example 2.
Watch two (b)
Constraint terms for each conditional are shown in table two (c): watch two (c)
According to the second table (a), the second table (b) and fig. 3, the shape of the lens and the thickness of the material of the lens of the current embodiment are shown clearly, which illustrates that the current embodiment realizes the lens feature with smaller head size by adjusting the shape and the interval of the lens.
As shown clearly in the MTF in table two (c) and fig. 4A, after the lens meets the requirements of the claims, the MTF of the lens in the fields of view of 0F, 0.4F, 0.6F, 0.8F and 1.0F has a higher value, which indicates that the lens has good resolution and can capture a clear image.
As shown clearly in table two (c) and the distortion curve in fig. 4B, after the lens meets the requirements of the claims, the distortion of the lens is less than 2%, which indicates that the lens has a good capability of improving distortion, and can present a clearer image.
As shown clearly in table two (C) and the astigmatism curves in fig. 4C, after the lens meets the requirements of the claims, the focus offset in the S/T direction of the lens is less than 0.05mm, which means that the lens can better improve the influence of astigmatism on the imaging of the lens, so as to capture a clear image.
According to the above information, it is demonstrated that the embodiment is characterized in that a smaller head size and a higher resolving power can be realized, and the influence of distortion and astigmatism can be reduced, and a clearer image can be presented.
Example 3
As shown in fig. 5, the periscopic small-head high-resolution lens includes, in order from an object side to an image side: a first lens element with negative refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis; a diaphragm; a second lens element with positive refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis; the reflecting surface and the optical axis form an included angle of 45 degrees; the third lens element with negative refractive power has a concave object-side surface and a concave image-side surface at the optical axis; a fourth lens element with positive refractive power having convex object-side and image-side surfaces at optical axes; a fifth lens element with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region; and a sixth lens element with negative refractive power and M-shaped cross section, wherein the object-side surface is convex at the optical axis and the image-side surface is concave at the optical axis. After passing through the first lens, the diaphragm and the second lens, the light path transmission direction of the light rays at the prism is changed, and then the light rays sequentially pass through the third lens, the fourth lens, the fifth lens and the sixth lens and finally converge on an image surface after passing through the optical filter.
In this embodiment, the design parameters of the six lenses and the prism refer to the following table: table three (a) shows the surface type, radius of curvature, thickness, and material of each lens and prism of the optical lens of example 1.
Watch III (a)
| Lens | Surface number | Surface type | Radius of curvature | Thickness of | Material Property (Nd: Vd) | |
| OBJ | | Inf | 400 | |||
| |
1 | Spherical surface | -2.290 | 0.50 | 1.6612.20.534 | |
| 2 | Aspherical surface | -3.540 | 0.00 | |||
| Stop | Aspherical surface | Inf | 0.10 | |||
| |
3 | Aspherical surface | -14.405 | 0.85 | 1.5445.55.987 | |
| 4 | Aspherical surface | -1.590 | 0.15 | |||
| |
5 | Spherical surface | Inf | 1.35 | TAF1_HOYA | |
| 6 | Spherical surface | Inf | -1.35 | TAF1_HOYA | ||
| 7 | Spherical surface | Inf | -0.11 | |||
| |
8 | Aspherical surface | 258.795 | -0.28 | 1.6612.20.534 | |
| 9 | Aspherical surface | -5.098 | -0.13 | |||
| |
10 | Aspherical surface | -25.915 | -0.56 | 1.5445.55.987 | |
| 11 | Aspherical surface | 93.411 | -0.05 | |||
| |
12 | Aspherical surface | 12.113 | -0.63 | 1.5445.55.987 | |
| 13 | Aspherical surface | 2.458 | -0.05 | |||
| |
14 | Aspherical surface | -1.225 | -0.43 | 1.6397.23.53 | |
| 15 | Aspherical surface | -0.832 | -0.62 | |||
| BK7 | 16 | Spherical surface | Inf | -0.21 | NBK7_SCHOTT | |
| 17 | Spherical surface | Inf | -0.38 | |||
| IMA |
Table three (b) shows aspherical coefficients of the respective lenses of the optical lens of example 3.
Watch III (b)
Constraint terms for each conditional are shown in table three (c): watch III (c)
According to table three (a), table three (b) and fig. 5, the shape of the lens and the thickness of the material of the lens of the current embodiment are clearly shown, which illustrates that the current embodiment realizes the lens feature of smaller head size by adjusting the shape and the interval of the lens.
As shown clearly in the MTF conditions in table three (c) and fig. 6A, after the lens meets the requirements of the claims, the MTF of the lens in the fields of view of 0F, 0.4F, 0.6F, 0.8F and 1.0F has a higher value, which indicates that the lens has good resolution and can shoot clear images.
It is shown clearly from the distortion curve conditions in table three (c) and fig. 6B that the distortion of the lens is less than 2.5% after the lens meets the requirements of the claims, which indicates that the lens has good capability of improving distortion and can present a clearer image.
As shown clearly in the third table (C) and the astigmatism curves in fig. 6C, after the lens meets the requirements of the claims, the focus offset in the S/T direction of the lens is less than 0.06mm, which means that the lens can better improve the influence of astigmatism on the imaging of the lens, so as to capture a clear image.
According to the above information, it is demonstrated that the embodiment is characterized in that a smaller head size and a higher resolving power can be realized, and the influence of distortion and astigmatism can be reduced, and a clearer image can be presented.
Claims (9)
1. A periscopic high resolution lens with small lens, in order from an object side to an image side, comprising:
a first lens element with negative refractive power having a concave object-side surface at an optical axis and a convex image-side surface at the optical axis;
a diaphragm;
a second lens element with positive refractive power having a convex image-side surface at an optical axis;
the reflecting surface and the optical axis form an included angle of 45 degrees;
a third lens element with negative refractive power having an image-side surface which is concave at an optical axis and at least one surface which is aspheric;
a fourth lens element with positive refractive power having a convex image-side surface along an optical axis and at least one aspheric surface;
a fifth lens element with positive refractive power having a convex image-side surface at the optical axis and a concave object-side surface at the paraxial region;
a sixth lens element with negative refractive power and an M-shaped object-side surface being convex at an optical axis;
the following conditional expressions are satisfied:
n1>1.66
R1/R2>0.55
where n1 is the refractive index of the material of the first lens, R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens.
2. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
-7<F1/F2<-2
wherein F1 is the effective focal length of the first lens, and F2 is the effective focal length of the second lens.
3. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
Sag31/Sd3〉0
wherein Sag31 is the edge rise of the object side surface of the third lens, and Sd3 is the effective diameter of the edge of the third lens.
4. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
(V1+V2)/2>30
wherein V1 is the abbe number of the first lens, and V2 is the abbe number of the second lens.
5. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
SD3/IMAG<0.4
where SD3 is the outer diameter of the third lens and IMAG is the half image height of the lens.
6. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
-13<R10/R11<6
wherein R10 is the curvature radius of the object-side surface of the fifth lens, and R11 is the curvature radius of the image-side surface of the fifth lens.
7. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
YC61/YC62<0.5
wherein YC61 is a distance from an inflection point on an object-side off-axis surface of the sixth lens to the optical axis; YC62 is a distance from an inflection point on an image-side axis surface of the sixth lens element to the optical axis.
8. A periscopic small-head high-resolution lens according to claim 1, further satisfying the following conditional expressions:
-9<F1/F<-2
wherein F1 is the effective focal length of the first lens, and F is the effective focal length of the lens.
9. A periscopic tip lens as claimed in claim 1, wherein: the object side surface and the image side surface of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are aspheric surfaces, and aspheric coefficients meet the following equation:
Z＝cy2/[1+{1－(1+k)c2y2}+1/2]+A4y4+A6y6+A8y8+A10y10+A12y12+A14y14+A16y16
wherein Z is aspheric sagittal height, c is aspheric paraxial curvature, y is lens caliber, k is cone coefficient, A4Is a 4-order aspheric coefficient, A6Is a 6-degree aspheric surface coefficient, A8Is an 8 th order aspheric surface coefficient, A10Is a 10 th order aspheric surface coefficient, A12Is a 12 th order aspheric surface coefficient, A14Is a 14 th order aspheric coefficient, A16Is a 16-degree aspheric coefficient.
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| CN202021870385.4U CN212749357U (en) | 2020-09-01 | 2020-09-01 | Periscopic high-resolution lens with small head |
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| CN202021870385.4U CN212749357U (en) | 2020-09-01 | 2020-09-01 | Periscopic high-resolution lens with small head |
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| CN212749357U true CN212749357U (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021870385.4U Active CN212749357U (en) | 2020-09-01 | 2020-09-01 | Periscopic high-resolution lens with small head |
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| Country | Link |
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| CN (1) | CN212749357U (en) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A periscope type small head high resolution lens Effective date of registration: 20220929 Granted publication date: 20210319 Pledgee: China Construction Bank Corporation Panjin branch Pledgor: Liaoning Zhonglan Photoelectric Technology Co.,Ltd. Registration number: Y2022210000157 |