CN116819726A - 4p notebook computer lens - Google Patents
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- CN116819726A CN116819726A CN202310749877.XA CN202310749877A CN116819726A CN 116819726 A CN116819726 A CN 116819726A CN 202310749877 A CN202310749877 A CN 202310749877A CN 116819726 A CN116819726 A CN 116819726A
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- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 27
- 238000003384 imaging method Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
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Abstract
The invention provides a 4p notebook computer lens, which comprises an aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens, wherein the aperture diaphragm, the first lens, the second lens, the third lens and the fourth lens are arranged from an object side to an image side along an optical axis; the second lens has negative focal power, the object side surface of the second lens is concave at the paraxial region, and the image side surface of the second lens is convex at the paraxial region; the third lens has positive focal power, the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is convex at the paraxial region; the fourth lens has negative optical power. The notebook lens provided by the invention supplements the types of notebook computer lenses on the market, and compared with the main flow lens, the notebook lens has simpler process flow, lower cost and lower manufacturing cost, but the performance is kept unchanged or even better.
Description
Technical Field
The invention relates to the field of optical lenses, in particular to a 4p notebook computer lens.
Background
The development of the network enables video chat in the virtual world to develop rapidly, the requirement for the lens of the notebook computer is gradually increased, the special camera for the notebook computer is required to be portable, and the adaptability to the environment is good. After all, most of the environment where the notebook is used is outdoor, and the camera needs to adapt to surrounding light, humidity, temperature and the like in a short time, so that the work done by the camera for the notebook is generally stronger than that of a desktop, and the material consumption is sufficient. Cameras are emerging as accessory products for computers, and their primary pursuit is not good image quality, but rather light, versatile, personalized appearance and low cost.
Disclosure of Invention
The invention provides a 4p notebook computer lens aiming at the technical problems existing in the prior art, which comprises an aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens which are arranged from an object side to an image side along an optical axis;
the first lens has positive focal power, the object side surface of the first lens is a convex surface at the paraxial region, and the image side surface of the first lens is a convex surface at the paraxial region;
the second lens has negative focal power, the object side surface of the second lens is concave at the paraxial region, and the image side surface of the second lens is convex at the paraxial region;
the third lens has positive focal power, the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is convex at the paraxial region;
the fourth lens has negative optical power.
On the basis of the technical scheme, the invention can also make the following improvements.
Optionally, the focal length of the third lens is f4, and the focal length of the fourth lens is f4, which satisfies the following conditions:
-1.4<f4/f3<-1。
optionally, the focal length of the first lens is f1, and the total focal length of the lens is f, which satisfies the following conditions:
1<f1/f<1.2。
optionally, the focal length of the third lens is f3, and the focal lengths of the second lens and the third lens are f23, which satisfies the following conditions:
1＜f23/f3＜1.2。
optionally, the core thickness of the second lens is T2, and the total focal length of the lens is f, which satisfies the following conditions:
0.09＜T2/f＜0.11。
the 4p notebook computer lens provided by the invention supplements the types of notebook computer lenses on the market, and has simpler process flow and lower cost and manufacturing cost compared with the main flow lens, but the performance is kept unchanged or even better. The invention designs corresponding parameters for each lens for the 4p notebook computer lens, and the lens meets high-definition imaging, has small distortion and high relative illumination, reduces the cost of parts, assembly cost, improves the production efficiency, has lower cost of lens materials, is matched with a new design framework and a brand new film system, and has light volume and excellent mass production performance.
Drawings
Fig. 1 is a schematic structural diagram of a lens of a 4p notebook computer according to a first embodiment of the present invention;
FIG. 2 is a Ray fan diagram of a 4p notebook computer lens according to a first embodiment;
FIG. 3 is a diagram showing the relative illuminance of a 4p notebook computer lens according to the first embodiment;
FIG. 4 is a diagram showing the distortion of the lens of a 4p notebook computer according to the first embodiment; a step of
FIG. 5 is a graph showing MTF curves of a 4p notebook lens of the first embodiment at different frequencies;
fig. 6 is a schematic structural diagram of a lens of a 4p notebook computer according to a second embodiment of the present invention;
FIG. 7 is a Ray fan diagram of a 4p notebook computer lens according to a second embodiment;
FIG. 8 is a diagram showing the relative illuminance of a lens of a 4p notebook computer according to a second embodiment;
FIG. 9 is a diagram showing field curvature distortion of a 4p notebook computer lens according to a second embodiment;
FIG. 10 is a graph showing MTF curves of a 4p notebook lens of a second embodiment at different frequencies;
fig. 11 is a schematic structural diagram of a lens of a 4p notebook computer according to a second embodiment of the present invention;
FIG. 12 is a Ray fan diagram of a 4p notebook computer lens according to a second embodiment;
FIG. 13 is a diagram showing the relative illuminance of a lens of a 4p notebook computer according to a second embodiment;
FIG. 14 is a diagram showing field curvature distortion of a 4p notebook computer lens according to a second embodiment; a step of
FIG. 15 is a graph showing MTF curves of a 4p notebook lens of a second embodiment at different frequencies;
fig. 16 is a schematic structural diagram of a lens of a 4p notebook computer according to a second embodiment of the present invention;
FIG. 17 is a Ray fan diagram of a 4p notebook computer lens according to a second embodiment;
FIG. 18 is a diagram showing the relative illuminance of a lens of a 4p notebook computer according to a second embodiment;
FIG. 19 is a diagram showing field curvature distortion of a 4p notebook computer lens according to a second embodiment; a step of
Fig. 20 is a graph showing MTF curves of a 4p notebook lens according to the second embodiment at different frequencies.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of each embodiment or the single embodiment provided by the invention can be combined with each other at will to form a feasible technical scheme, and the combination is not limited by the sequence of steps and/or the structural composition mode, but is necessarily based on the fact that a person of ordinary skill in the art can realize the combination, and when the technical scheme is contradictory or can not realize, the combination of the technical scheme is not considered to exist and is not within the protection scope of the invention claimed.
Based on the problems in the background art, fig. 1 provides a 4p notebook computer lens according to a first embodiment of the present invention, which includes an aperture stop, a first lens, a second lens, a third lens, and a fourth lens arranged from an object side to an image side along an optical axis. The first lens has positive focal power, the object side surface of the first lens is a convex surface at the paraxial region, and the image side surface of the first lens is a convex surface at the paraxial region; the second lens has negative focal power, the object side surface of the second lens is concave at the paraxial region, and the image side surface of the second lens is convex at the paraxial region; the third lens has positive focal power, the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is convex at the paraxial region; the fourth lens has negative optical power.
It can be understood that, in the 4p notebook computer lens provided in the first embodiment of the present invention, the arrangement order of the elements from the object side to the image side along the optical axis is as follows: an aperture STOP (STOP), a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4).
The focal length of the third lens (L3) is f3, the focal length of the fourth lens (L4) is f4, and the following conditions are satisfied by both: -1.4< f4/f3< -1.
The focal length of the first lens (L1) is f1, the total focal length of the lens is f, and the two satisfy the following conditions: 1< f1/f <1.2.
The focal length of the third lens (L3) is f3, the focal lengths of the second lens (L2) and the third lens (L3) are f23, and the following conditions are satisfied: 1< f23/f 3< 1.2.
The core thickness of the second lens (L2) is T2, the total focal length of the lens is f, and the following conditions are satisfied: 0.09 < T2/f < 0.11.
The data of each lens of the 4p notebook computer lens of the first embodiment are shown in table 1 below.
TABLE 1
Wherein L1s1 is the object plane of the first lens, L1s2 is the image plane of the first lens, L2s1 is the object plane of the second lens, L2s2 is the image plane of the second lens, L3s1 is the object plane of the third lens, L3s2 is the image plane of the third lens, L4s1 is the object plane of the fourth lens, L4s2 is the image plane of the fourth lens, and the cone coefficients k and the aspherical coefficients A4-a16 of the object plane and the image plane of the first lens L1 to the fourth lens are shown in table 2.
TABLE 2
Wherein the conditions satisfied by the optical parameters of the first lens to the fourth lens are as follows in table 3.
TABLE 3 Table 3
| f3＝ | 1.0402 | f4＝ | -1.134 | f4/f3＝ | -1.0902 |
| f1＝ | 1.6286 | f＝ | 1.4509 | f1/f＝ | 1.1225 |
| f23＝ | 1.0776 | f3＝ | 1.0402 | f23/f3＝ | 1.036 |
| T2＝ | 0.1429 | f＝ | 1.4505 | T2/f＝ | 0.0985 |
Fig. 2 is a Ray fan diagram of a 4p notebook computer lens according to the first embodiment, wherein the smaller the numerical value is, the better the imaging effect is. Fig. 3 is a graph of the relative illuminance of the lens of the 4p notebook computer according to the first embodiment, where the higher the value, the better the relative illuminance. Fig. 4 is a schematic diagram of field curvature and distortion of a 4p notebook lens according to the first embodiment, wherein the left side is the field curvature, the right side is the distortion, and the closer to the center, the better the imaging effect is. Fig. 5 is a graph showing MTFs of the 4p notebook lens of the first embodiment at different frequencies, wherein the smoother the curve, the higher the numerical value, and the better the imaging effect of the lens.
Fig. 6 is a schematic structural diagram of a 4p notebook computer lens according to a second embodiment, which has the same structure as that of the first embodiment, and is different in that: the lens data, the cone coefficient, the aspherical coefficient and the optical parameter of each lens are different.
The data of each lens of the 4p notebook computer lens of the second embodiment are shown in table 4 below.
TABLE 4 Table 4
The cone coefficients k and the aspherical coefficients A4-a16 of the object and image planes of the first lens L1 to the fourth lens L4 are shown in table 5.
TABLE 5
The conditions satisfied by the optical parameters of the first lens to the fourth lens are as shown in table 6 below.
TABLE 6
| f3＝ | 1.0247 | f4＝ | -1.1753 | f4/f3＝ | -1.147 |
| f1＝ | 1.6636 | f＝ | 1.452 | f1/f＝ | 1.1457 |
| f23＝ | 1.0731 | f3＝ | 1.0247 | f23/f3＝ | 1.0473 |
| T2＝ | 0.1465 | f＝ | 1.452 | T2/f＝ | 0.0986 |
Fig. 7 is a Ray fan diagram of a 4p notebook computer lens according to the second embodiment, wherein the smaller the numerical value is, the better the imaging effect is. Fig. 8 is a graph of the relative illuminance of the lens of the 4p notebook computer according to the second embodiment, wherein the higher the value, the better the relative illuminance. Fig. 9 is a schematic diagram of field curvature and distortion of a 4p notebook lens according to a second embodiment, wherein the left side is the field curvature, the right side is the distortion, and the closer to the center, the better the imaging effect. Fig. 10 is a graph showing MTF of the lens of the 4p notebook computer according to the second embodiment at different frequencies, wherein the smoother the curve, the higher the numerical value, and the better the imaging effect of the lens.
Fig. 11 is a schematic structural diagram of a lens of a 4p notebook computer according to a third embodiment, which has the same structure as that of the first embodiment, and is different in that: the lens data, the cone coefficient, the aspherical coefficient and the optical parameter of each lens are different.
The data of each lens of the 4p notebook computer lens of the third embodiment are shown in table 7 below.
TABLE 7
The cone coefficients k and the aspherical coefficients A4-a16 of the object and image planes of the first lens L1 to the fourth lens L4 are shown in table 8.
TABLE 8
The conditions satisfied by the optical parameters of the first lens to the fourth lens are as shown in table 9 below.
TABLE 9
| f3＝ | 1.0364 | f4＝ | -1.299 | f4/f3＝ | -1.2534 |
| f1＝ | 1.5736 | f＝ | 1.4518 | f1/f＝ | 1.0839 |
| f23＝ | 1.1822 | f3＝ | 1.0364 | f23/f3＝ | 1.1407 |
| T2＝ | 0.1448 | f＝ | 1.4518 | T2/f＝ | 0.0998 |
Fig. 12 is a Ray fan diagram of a lens of a 4p notebook computer according to a third embodiment, wherein the smaller the numerical value is, the better the imaging effect is. Fig. 13 is a graph of the relative illuminance of the lens of the 4p notebook computer according to the third embodiment, wherein the higher the value, the better the relative illuminance. Fig. 14 is a schematic diagram of field curvature and distortion of a lens of a 4p notebook computer according to a third embodiment, wherein the left side is the field curvature, the right side is the distortion, and the closer to the center, the better the imaging effect is. Fig. 15 is a graph showing MTFs of the lens of the 4p notebook computer according to the third embodiment at different frequencies, wherein the smoother the curve, the higher the numerical value, and the better the imaging effect of the lens.
Fig. 16 is a schematic structural diagram of a 4p notebook computer lens according to a fourth embodiment, which has the same structure as that of the first embodiment, except that: the lens data, the cone coefficient, the aspherical coefficient and the optical parameter of each lens are different.
The data of each lens of the 4p notebook computer lens of the fourth embodiment are shown in table 10 below.
Table 10
The cone coefficients k and the aspherical coefficients A4-a16 of the object and image planes of the first lens L1 to the fourth lens L4 are shown in table 11.
TABLE 11
The conditions satisfied by the optical parameters of the first lens to the fourth lens are as shown in table 12 below.
Table 12
| f3＝ | 1.269 | f4＝ | -1.709 | f4/f3＝ | -1.3467 |
| f1＝ | 1.6247 | f＝ | 1.3954 | f1/f＝ | 1.11643 |
| f23＝ | 1.333 | f3＝ | 1.269 | f23/f3＝ | 1.0504 |
| T2＝ | 0.1413 | f＝ | 1.3954 | T2/f＝ | 0.1013 |
Fig. 17 is a Ray fan diagram of a 4p notebook computer lens according to the fourth embodiment, wherein the smaller the numerical value is, the better the imaging effect is. Fig. 18 is a graph of the relative illuminance of the lens of the 4p notebook computer according to the fourth embodiment, wherein the higher the value, the better the relative illuminance. Fig. 19 is a diagram showing field curvature and distortion of a 4p notebook lens according to a fourth embodiment, wherein the left side is the field curvature, the right side is the distortion, and the closer to the center, the better the imaging effect. Fig. 20 is a graph showing MTFs of the 4p notebook lens of the fourth embodiment at different frequencies, wherein the smoother the curve, the higher the numerical value, and the better the imaging effect of the lens.
Compared with the mainstream lens, the 4p notebook computer lens provided by the embodiment of the invention has simpler process flow and lower cost, but the performance is kept unchanged or even better. The invention designs corresponding parameters for each lens for the 4p notebook computer lens, and the lens meets high-definition imaging, has small distortion and high relative illumination, reduces the cost of parts, assembly cost, improves the production efficiency, has lower cost of lens materials, is matched with a new design framework and a brand new film system, and has light volume and excellent mass production performance.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. A 4p notebook computer lens, characterized by comprising an aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens which are arranged from an object side to an image side along an optical axis;
the first lens has positive focal power, the object side surface of the first lens is a convex surface at the paraxial region, and the image side surface of the first lens is a convex surface at the paraxial region;
the second lens has negative focal power, the object side surface of the second lens is concave at the paraxial region, and the image side surface of the second lens is convex at the paraxial region;
the third lens has positive focal power, the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is convex at the paraxial region;
the fourth lens has negative optical power.
2. The 4p notebook computer lens according to claim 1, wherein the focal length of the third lens is f4, and the focal length of the fourth lens is f4, which satisfies the following condition:
-1.4<f4/f3<-1。
3. the 4p notebook computer lens according to claim 1, wherein the focal length of the first lens is f1, and the total focal length of the lens is f, which satisfies the following condition:
1<f1/f<1.2。
4. the 4p notebook computer lens according to claim 1, wherein the focal length of the third lens is f3, and the focal lengths of the second lens and the third lens are f23, which satisfies the following condition:
1＜f23/f3＜1.2。
5. the 4p notebook computer lens according to claim 1, wherein the second lens has a core thickness of T2 and a total focal length of f, which satisfies the following condition:
0.09＜T2/f＜0.11。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310749877.XA CN116819726A (en) | 2023-06-21 | 2023-06-21 | 4p notebook computer lens |
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| CN202310749877.XA CN116819726A (en) | 2023-06-21 | 2023-06-21 | 4p notebook computer lens |
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