CN220188792U - Optical lens and vehicle with same - Google Patents
Optical lens and vehicle with same Download PDFInfo
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- CN220188792U CN220188792U CN202321474344.7U CN202321474344U CN220188792U CN 220188792 U CN220188792 U CN 220188792U CN 202321474344 U CN202321474344 U CN 202321474344U CN 220188792 U CN220188792 U CN 220188792U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 169
- 238000003384 imaging method Methods 0.000 claims abstract description 35
- 230000005499 meniscus Effects 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 14
- 238000002834 transmittance Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000004075 alteration Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an optical lens and a vehicle with the same, wherein the optical lens comprises: the lens comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and an optical filter which are sequentially arranged from an object side to an imaging side, wherein the first lens has negative focal power and is a meniscus lens; the second lens has negative focal power and is a biconcave lens or a meniscus lens; the third lens has positive focal power and is a biconvex lens or a meniscus lens; the fourth lens has positive focal power and is a biconvex lens; the fifth lens has negative focal power and is a biconcave lens or a meniscus lens; the sixth lens has positive focal power and is a biconvex lens or a meniscus lens, the sixth lens and the second lens are plastic aspheric lenses, and the rest lenses are glass spherical lenses; the optical filter is a day-night dual-channel optical filter. The utility model can achieve the effects of better temperature drift control, high edge illuminance and higher chip compatibility by reasonably matching the focal power combination of each lens.
Description
Technical Field
The utility model relates to the technical field of optical imaging, in particular to an optical lens and a vehicle with the same.
Background
In recent years, with the rapid development of high-definition camera shooting and vehicle-mounted module industry, the requirements of in-vehicle human-computer interaction mode and in-vehicle human monitoring are also increasing, but the in-vehicle human monitoring lens in the related technology has the problems of too small aperture, poor temperature drift control and low resolution quality, and the signal-to-noise ratio can not meet the requirements due to too small incident light flux in the environments such as daytime or night.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide an optical lens, which can solve the problems of too small aperture, poor temperature drift control and low resolution quality of the lens, and can meet the requirements of higher temperature drift control and higher resolution quality in the daytime or at night.
The utility model also aims to provide a vehicle for applying the optical lens.
An optical lens according to an embodiment of the present utility model includes: a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and an optical filter which are sequentially arranged from an object side to an imaging side, wherein the first lens has negative focal power and is a meniscus lens bent towards the imaging side; the second lens has negative focal power and is a biconcave lens or a meniscus lens curved toward the object side; the third lens has positive optical power and is a biconvex lens or a meniscus lens curved toward the imaging side; the fourth lens has positive focal power and is a biconvex lens; the fifth lens has negative focal power and is a biconcave lens or a meniscus lens curved toward the object side; the sixth lens has positive focal power and is a biconvex lens or a meniscus lens bent towards the object side, wherein the sixth lens and the second lens are plastic aspheric lenses, and the rest lenses are glass spherical lenses; the optical filter is a day-night dual-channel optical filter.
According to the optical lens provided by the embodiment of the utility model, the first lens, the third lens, the fourth lens and the fifth lens adopt glass spherical lenses, the sixth lens and the second lens are plastic aspheric lenses, and the effects of better temperature drift control, high edge illuminance and higher chip compatibility can be achieved by reasonably matching the focal power combination of the lenses.
In some embodiments, the optical lens satisfies the relationship: 140 ° <2θ <170 °;1.6< f# <2.2; wherein 2 theta is the full field angle of the looking-around lens; f# is the F-number of the optical lens.
In some embodiments, the optical lens satisfies the relationship: 3<T L /h 1 <6；T L An optical total length of the optical lens; h is a 1 Representing 1/2 of the image plane height.
In some embodiments, the optical lens satisfies the relationship: wherein (1)>An optical power of the first lens; />Is the focal power of the optical lens; />The second lens and the third lens form a middle lens group of the optical lens; phi 456 The fourth lens, the fifth lens and the sixth lens form a rear lens group of the optical lens, wherein the rear lens group is the combined focal power of the fourth lens, the fifth lens and the sixth lens.
In some embodiments, the optical lens satisfiesRelation formula: SD1/h of 1 1 < 2; wherein SD1 is the half-caliber of the first lens; h is a 1 Representing 1/2 of the image plane height.
In some embodiments, the optical lens satisfies the relationship: -1 < 1/R12 < 0.1;20 < CRA < 30; wherein CRA is the chief ray angle of the optical lens; r12 is a radius of curvature of a surface of the sixth lens near the imaging side.
In some embodiments, the optical lens satisfies the relationship: -3 < R8/(R4+R9) < 0; wherein R4 is a surface radius of curvature of the second lens near the imaging side; r8 is a radius of curvature of a surface of the fourth lens near the object side; r9 is a radius of curvature of a surface of the fourth lens near the imaging side.
In some embodiments, the diaphragm is a filter paper, and a light passing hole is formed in the center of the filter paper.
In some embodiments, the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the sixth lens are each coated with a high light transmittance multilayer film.
According to an embodiment of the present utility model, a vehicle includes: an optical lens as claimed in any preceding claim, which is provided in a vehicle cabin.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of an optical lens according to a first embodiment of the present utility model;
FIG. 2 is a schematic diagram of an optical lens assembly according to a second embodiment of the present utility model;
FIG. 3 is a schematic diagram illustrating an optical lens assembly according to a first embodiment of the present utility model;
FIG. 4 is a schematic diagram illustrating an optical lens assembly according to a second embodiment of the present utility model;
FIG. 5 is a graph showing the defocus curves of visible light of an optical lens according to a first embodiment of the present utility model;
FIG. 6 is an infrared defocus curve of an optical lens according to an embodiment of the present utility model;
FIG. 7 is a graph showing the defocus curves of visible light of an optical lens according to a second embodiment of the present utility model;
FIG. 8 is an infrared defocus curve of an optical lens according to a second embodiment of the present utility model;
FIG. 9 is a graph showing the MTF of visible light of an optical lens according to an embodiment of the present utility model;
FIG. 10 is an infrared MTF curve of an optical lens according to an embodiment of the present utility model;
FIG. 11 is a graph showing the MTF of visible light of an optical lens according to a second embodiment of the present utility model;
FIG. 12 is an infrared MTF curve of an optical lens in a second embodiment of the present utility model;
FIG. 13 is a graph showing illuminance curves of an optical lens according to an embodiment of the present utility model;
FIG. 14 is a graph showing illuminance curves of an optical lens in a second embodiment of the present utility model;
FIG. 15 is a plot of chief ray angle of an optical lens according to an embodiment of the present utility model;
fig. 16 is a principal ray angle curve of an optical lens according to a second embodiment of the utility model.
Reference numerals:
1. an optical lens; 11. a first lens; 12. a second lens; 13. a third lens; 14. a diaphragm; 15. a fourth lens; 16. a fifth lens; 17. a sixth lens; 18. a light filter; 19. a cover glass; 20. an image plane.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
An optical lens 1 according to an embodiment of the present utility model is described below with reference to fig. 1 to 16.
The optical lens 1 according to the embodiment of the present utility model includes: a first lens 11, a second lens 12, a third lens 13, a stop 14, a fourth lens 15, a fifth lens 16, a sixth lens 17, and a filter 18, which are disposed in order from the object side to the imaging side (from left to right in fig. 1 and 2).
The first lens 11 has negative power, and is a meniscus lens curved toward the imaging side. The second lens 12 has negative power and is a biconcave lens or a meniscus lens curved toward the object side. The third lens 13 has positive optical power, and is a biconvex lens or a meniscus lens curved toward the imaging side. The fourth lens 15 has positive optical power and is a biconvex lens. The fifth lens 16 has negative power, and is a biconcave lens or a meniscus lens curved toward the object side. The sixth lens 17 has positive optical power and is a biconvex lens or a meniscus lens curved to the object side, wherein the sixth lens 17 and the second lens 12 are plastic aspherical lenses, and the remaining lenses are glass spherical lenses. The filter 18 is a day and night two-channel filter.
The first lens 11, the third lens 13, the fourth lens 15 and the fifth lens 16 adopt glass spherical lenses, the sixth lens 17 and the second lens 12 are plastic aspherical lenses, namely most of lenses are made of glass materials, and fewer lenses are made of plastic materials, so that the material and processing and assembling cost can be reduced while the longer service life and the better stability are met.
Through the mixed use of four glass spherical lenses and two plastic aspherical lenses, the aberration of the optical lens 1 can be effectively corrected, and the lens has the advantage of small focal drift caused by high and low temperature, can be suitable for more temperature occasions, and has better temperature drift control. And secondly, by reasonably matching the focal power combination of each lens, and compared with the glass lens, the two plastic aspheric lenses can be made higher in precision and thinner in thickness due to the manufacturing process, so that the imaging quality of the whole lens can be effectively improved, and the optical total length of the whole lens can be reduced as much as possible at the same time, so that the image with high imaging quality can be shot under the condition of ensuring darker environment. And because the sixth lens 17 and the second lens 12 are aspheric lenses, the chief ray angle of the lens can be well controlled to be perfectly matched with the sensor, and the chip compatibility of the lens is improved.
In addition, the optical lens 1 can meet the use of day and night environments by setting the optical filter 18 to be a day and night dual-channel optical filter, the overall definition of the central view field and the edge view field of the optical lens 1 is higher, the large aperture can meet the imaging definition in a low-illumination environment, and the application of the optical lens 1 to the camera module can increase the use range of the camera module.
According to the optical lens 1 of the embodiment of the present utility model, the first lens 11, the third lens 13, the fourth lens 15 and the fifth lens 16 are glass spherical lenses, and the sixth lens 17 and the second lens 12 are plastic aspherical lenses, and by reasonably matching the focal power combinations of the lenses, the effects of better temperature drift control, high edge illuminance and higher chip compatibility (i.e. by changing the lens shapes of the fourth lens 15, the fifth lens 16 and the sixth lens 17, the chief ray angle of the lens is changed and the chip compatibility of the lens is increased) can be achieved.
In some embodiments, the optical lens 1 satisfies the relation: 140 ° <2θ <170 °;1.6< f# <2.2; wherein 2 theta is the full field angle of the looking-around lens; f# is the F-number of the optical lens 1.
That is, the full field angle 2θ and the f# of the optical lens 1 cannot be too small nor too large, and an appropriate range needs to be selected. When the f# exceeds 2.2, the full field angle 2θ exceeds 170 °, the correctable aberration remaining margin of the optical lens 1 is excessive; when the f-number is less than 1.6, the full field angle 2θ is less than 140 °, the aberration of the optical lens 1 is excessive. By setting the full field angle 2θ and the f# within the above ranges, it is advantageous to improve the imaging quality of the entire lens.
In some embodiments, the optical lens 1 satisfies the relation: 3<T L /h 1 <6；T L Is the optical total length of the optical lens 1; h is a 1 Representing 1/2 of the image plane height. When T is L /h 1 If the value of (2) exceeds 6, the overall length of the optical lens 1 becomes too long, or if the overall length is shortened, the image height becomes insufficient; when T is L /h 1 The value of (2) is smaller than 3, and the aberration of the optical lens 1 is difficult to correct due to the excessive focal power of each lens, and the resolution is significantly lowered. By combining T L /h 1 The arrangement in the above range can ensure that the overall length of the optical lens 1 is not too long, the correction is easier, and the resolution is better.
In some embodiments, the optical lens 1 satisfies the relation: wherein (1)>Is the optical power of the first lens 11; />Is the focal power of the optical lens 1; />The second lens 12 and the third lens 13 constitute a middle lens group of the optical lens 1, which is the optical power of the second lens 12 and the third lens 13; phi 456 The fourth lens 15, the fifth lens 16, and the sixth lens 17 constitute a rear lens group of the optical lens 1, which is a combined power of the fourth lens 15, the fifth lens 16, and the sixth lens 17.
When (when)When the value of (2) exceeds-0.4, the combined focal power of the front lens group is too strong, and the total length of the whole lens can be reduced, but the spherical aberration generated by the front lens group is too large and is difficult to correct; when->When the value of (2) is less than-0.8, the front lens group becomes weaker in power, the spherical aberration relatively decreases, but the refractive power thereof decreases, resulting in an increase in the total length of the overall lens.
The optical powers of the second lens 12 and the third lens 13 form a middle lens group of the optical lens 1, and the combined optical power of the middle lens group is connected with the front lens group, so that the front lens group is effectively matched. The middle lens group mainly completes the whole light focus bearing in the optical lens 1Degree, task of correcting vertical aberration, when +.>When the value of (2) exceeds 0.7, the optical power of the rear lens group is too strong, so that the total length of the system can be reduced, but the spherical aberration, astigmatism and field curvature generated by the rear lens group are too large to be corrected; when (when)When the value of (2) is less than 0.4, the optical power of the rear lens group is reduced, the aberration is relatively reduced, but the refractive power thereof is reduced, resulting in lengthening the system.
Φ 456 The rear lens group forms a rear lens group of the optical lens 1, and the combined focal power of the rear lens group is connected with the front lens group, so that aberration is effectively improved, and imaging quality is improved. The overall shape of the rear lens group is subject to phi 456 When the value of (2) exceeds the limit, the aberration correction capability of the rear lens group is lowered.
In some embodiments, the optical lens 1 satisfies the relation: SD1/h of 1 1 < 2; wherein SD1 is the half-caliber of the first lens 11; h is a 1 Representing 1/2 of the image plane height. The first lens 11 mainly plays a role in collecting light in the optical lens 1, and the larger the overall outer diameter is, the better the light collecting effect is, but the overall size of the overall optical lens 1 is increased, and when the above relation is satisfied, the good light collecting effect of the optical lens 1 can be ensured, and meanwhile, the overall size of the optical lens 1 can be ensured.
In some embodiments, the optical lens 1 satisfies the relation: -1 < 1/R12 < 0.1;20 < CRA < 30; wherein CRA is the chief ray angle of the optical lens 1; r12 is a surface radius of curvature of the sixth lens 17 near the imaging side.
The optical lens 1 satisfies the above relation, so that the chief ray angle of the optical lens 1 can be changed as much as possible while correcting the aberration, and the chip compatibility of the optical lens 1 is increased, and at this time, when R12 satisfies the relation, the chief ray angle can be ensured to be in the above range, and the optional chip variety is increased.
In some embodiments, the optical lens 1 satisfies the relation: -3 < R8/(R4+R9) < 0; wherein R4 is a surface radius of curvature of the second lens 12 near the imaging side; r8 is a surface radius of curvature of the fourth lens 15 near the object side; r9 is a surface radius of curvature of the fourth lens 15 near the imaging side. When the relation is satisfied, the intermediate lens group provides the optical power of the entire optical lens 1, and at the same time, has a function of well completing day-night confocal, and can well correct optical aberration.
In some embodiments, the diaphragm 14 is a filter paper, and the center of the filter paper is provided with a light passing hole.
In some embodiments, the first lens 11, the second lens 12, the third lens 13, the fourth lens 15, the fifth lens 16, and the sixth lens 17 are each coated with a high light transmittance multilayer film. By plating the respective lenses with a high-transmittance multilayer film, it is possible to satisfy the high transmittance and reduce the loss of light on the lens surfaces.
In some embodiments, the fourth lens 15 and the fifth lens 16 may or may not be cemented.
It should be noted that, in the embodiment of the present utility model, the surface shape of the aspherical lens of the wide-angle lens may satisfy the following equation:
wherein z is the distance of the curved surface from the curved surface vertex in the optical axis direction, c is the curvature of the curved surface vertex, K is a quadric surface coefficient, h is the distance from the optical axis to the curved surface, and B, C, D and E are four-order, six-order, eight-order and ten-order curved surface coefficients respectively.
A specific embodiment of the optical lens 1 of the present utility model is described below with reference to the drawings.
Example 1
As shown in fig. 1 and 3, the optical lens 1 includes a first lens 11, a second lens 12, a third lens 13, a stop 14, a fourth lens 15, a fifth lens 16, a sixth lens 17, and a filter 18, which are disposed in order from the object side to the imaging side.
The first lens 11 has negative power and is a meniscus lens curved toward the imaging side.
The second lens 12 has negative power and is a meniscus lens curved toward the object side.
The third lens 13 has positive power and is a meniscus lens curved toward the imaging side.
The fourth lens 15 has positive optical power and is a biconvex lens.
The fifth lens 16 has negative power and is a meniscus lens curved toward the object side.
The sixth lens 17 has positive power and is a meniscus lens curved to the object side, wherein the sixth lens 17 and the second lens 12 are plastic aspherical lenses, and the remaining lenses are glass spherical lenses.
The filter 18 is a day and night two-channel filter.
The optical lens 1 satisfies the relation:
140 ° <2θ <170 °;1.6< f# <2.2;2 theta is the full field angle of the looking-around lens; f# is the F-number of the optical lens 1.
3<T L /h 1 <6；T L Is the optical total length of the optical lens 1; h is a 1 Representing 1/2 of the image plane height.
Wherein (1)>Is the optical power of the first lens 11; />Is the focal power of the optical lens 1; />The second lens 12 and the third lens 13 constitute a middle lens group of the optical lens 1, which is the optical power of the second lens 12 and the third lens 13; phi 456 The fourth lens 15, the fifth lens 16 and the sixth lens 17 form optical power of the combination of the fourth lens 15, the fifth lens 16 and the sixth lens 17A rear lens group of the lens 1.
1＜SD1/h 1 < 2; wherein SD1 is the half-caliber of the first lens 11; h is a 1 Representing 1/2 of the image plane height.
1/R12> -0.1;20 < CRA < 30; wherein CRA is the chief ray angle of the optical lens 1; r12 is a surface radius of curvature of the sixth lens 17 near the imaging side.
R8/(r4+r9); wherein R4 is a surface radius of curvature of the second lens 12 near the imaging side; r8 is a surface radius of curvature of the fourth lens 15 near the object side; r9 is a surface radius of curvature of the fourth lens 15 near the imaging side.
The diaphragm 14 is filter paper, and the center of the filter paper is provided with a light transmission hole.
The first lens 11, the second lens 12, the third lens 13, the fourth lens 15, the fifth lens 16, and the sixth lens 17 are each coated with a high-transmittance multilayer film.
Referring to table 1, the parameters of each lens of the optical lens 1 in the first embodiment are as follows:
table a1:
table b1:
| K | B | C | D | E | |
| S3 | 3.80E+01 | -1.17E-01 | 4.28E-03 | -1.10E-02 | -3.78E-04 |
| S4 | -8.28E+00 | -3.38E-02 | 1.10E-03 | 1.32E-02 | -2.59E-02 |
| S11 | -6.07E-01 | -8.31E-03 | 2.76E-02 | 2.42E-03 | -1.16E-02 |
| S12 | -3.97E-01 | -9.07E-03 | 2.81E-03 | 4.61E-04 | -1.53E-03 |
example two
As shown in fig. 2 and 4, the structure of the optical lens 1 is substantially the same as that of the optical lens 1 in the first embodiment, except that
The second lens 12 has negative optical power and is a biconcave lens. The third lens 13 has positive optical power and is a biconvex lens. The fourth lens 15 has positive optical power and is a biconvex lens. The fifth lens 16 has negative optical power and is a biconcave lens. The sixth lens 17 has positive optical power and is a biconvex lens. And F# is 1.8 to increase imaging luminous flux, increase signal to noise ratio under high dynamic environment, and improve imaging quality in daytime and at night.
Referring to table 2, the parameters of each lens of the optical lens 1 in the second embodiment are as follows:
table a2:
table b2:
| surface serial number | K | B | C | D | E |
| S1 | 1.37E+00 | -2.63E-02 | 9.28E-04 | -7.62E-03 | -3.64E-04 |
| S2 | -6.82E+00 | -1.39E-03 | 7.22E-04 | 1.26E-02 | -2.33E-03 |
| S5 | -1.66E-01 | -7.07E-03 | 1.93E-02 | 1.13E-03 | -2.56E-03 |
| S6 | -6.45E-02 | -1.03E-03 | 2.17E-03 | 3.11E-04 | -4.22E-04 |
Referring to fig. 5 to 16, fig. 5 to 8 are defocus curves of the optical lens 1 of the first embodiment and the second embodiment, and the abscissa of the curves in fig. 5 to 8 is focal shift (mm) and the ordinate is OTF mode. Fig. 9 to 12 are MTF curves of the optical lens 1 of the first embodiment and the second embodiment, wherein the abscissa of the curves is the spatial frequency, and the ordinate is the OTF mode value. Fig. 13 and 14 are illuminance curves of the optical lens 1 of the first embodiment and the second embodiment, wherein the abscissa of the curves is the view field angle and the ordinate is the relative illuminance. Fig. 15 and 16 are graphs of principal ray angles of the optical lens 1 of the first and second embodiments, wherein the abscissa of the graph is the field of view and the ordinate is the incident angle. As can be seen from the figure, the aberrations of the optical lenses 1 of the first and second embodiments are well corrected, and the optical lenses 1 of the first and second embodiments have good resolution and resolution.
Referring to table 3, the optical characteristics corresponding to each of the two embodiments include the focal length F, the f#, the total system length TL, and the angle 2θ, and also include the relevant values corresponding to each of the relationships.
Table 3:
in summary, the optical lens 1 according to the above embodiment of the present utility model has the following advantages over the prior art:
1. the optical lens 1 provided by the utility model adopts four glass spherical surfaces and two plastic aspheric lenses for mixed use, has higher service life and stability, and reduces the material and processing and assembling costs.
2. The optical lens 1 of the utility model adopts the mixed use of four glass spherical surfaces and two plastic aspherical lenses, so that the aberration of the lens is effectively corrected, and the optical lens has the advantage of small focal drift caused by high and low temperature, can be suitable for different temperature occasions, and has good temperature drift control.
3. The optical lens 1 adopts four glass spherical surfaces and two plastic aspheric lenses for mixed use, and the two aspheric lenses can effectively improve the imaging quality of the whole lens and simultaneously reduce the total optical length of the whole lens as much as possible by reasonably matching the focal power combination of the lenses so as to ensure that images with high imaging quality can be shot under the condition of darker environment.
4. The second lens 12 and the sixth lens 17 of the optical lens 1 use aspheric lenses, and can well control the angle of the principal ray to be perfectly matched with a sensor, so that the chip compatibility of the lens is improved.
5. The optical lens 1 has high overall definition of the central view field and the edge view field, and the large aperture can meet the imaging definition in a low-illumination environment, so that the application range of the camera module is enlarged.
According to the vehicle provided by the embodiment of the utility model, the vehicle comprises the optical lens 1, and the optical lens 1 is arranged in the vehicle cabin, so that a day and night confocal lens for monitoring the vehicle door personnel can be formed and is used for monitoring the vehicle door personnel in the daytime and at night.
Other constructions and operations of the optical lens 1 and the vehicle according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.
In the description of the present specification, reference to the terms "some embodiments," "optionally," "further," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An optical lens, comprising: a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and a filter which are arranged in order from an object side to an imaging side,
the first lens has negative optical power and is a meniscus lens curved toward the imaging side;
the second lens has negative focal power and is a biconcave lens or a meniscus lens curved toward the object side;
the third lens has positive optical power and is a biconvex lens or a meniscus lens curved toward the imaging side;
the fourth lens has positive focal power and is a biconvex lens;
the fifth lens has negative focal power and is a biconcave lens or a meniscus lens curved toward the object side;
the sixth lens has positive focal power and is a biconvex lens or a meniscus lens bent towards the object side, wherein the sixth lens and the second lens are plastic aspheric lenses, and the rest lenses are glass spherical lenses;
the optical filter is a day-night dual-channel optical filter.
2. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
140°<2θ<170°；
1.6<F#<2.2；
wherein 2 theta is the full field angle of the looking-around lens; f# is the F-number of the optical lens.
3. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
3<T L /h 1 <6；
T L an optical total length of the optical lens; h is a 1 Representing 1/2 of the image plane height.
4. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
-0.8＜φ 1 /φ＜-0.4；
0.4＜φ 23 /φ＜0.7；
0.15＜φ 456 /φ＜0.25；
wherein phi is 1 An optical power of the first lens; phi is the focal power of the optical lens; phi (phi) 23 The second lens and the third lens form a middle lens group of the optical lens; phi 456 The fourth lens, the fifth lens and the sixth lens form a rear lens group of the optical lens, wherein the rear lens group is the combined focal power of the fourth lens, the fifth lens and the sixth lens.
5. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
1＜SD1/h 1 ＜2；
wherein SD1 is the half-caliber of the first lens; h is a 1 Representing 1/2 of the image plane height.
6. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
-1＜1/R12＜0.1；
20＜CRA＜30；
wherein CRA is the chief ray angle of the optical lens; r12 is a radius of curvature of a surface of the sixth lens near the imaging side.
7. The optical lens of claim 1, wherein the optical lens satisfies the relationship:
-3＜R8/(R4+R9)＜0；
wherein R4 is a surface radius of curvature of the second lens near the imaging side; r8 is a radius of curvature of a surface of the fourth lens near the object side; r9 is a radius of curvature of a surface of the fourth lens near the imaging side.
8. The optical lens of claim 1, wherein the diaphragm is a filter paper, and a light passing hole is formed in the center of the filter paper.
9. The optical lens of claim 1, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are each coated with a high-transmittance multilayer film.
10. A vehicle, characterized by comprising:
the optical lens according to any one of claims 1 to 9, which is provided in a vehicle cabin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321474344.7U CN220188792U (en) | 2023-06-09 | 2023-06-09 | Optical lens and vehicle with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321474344.7U CN220188792U (en) | 2023-06-09 | 2023-06-09 | Optical lens and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220188792U true CN220188792U (en) | 2023-12-15 |
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ID=89114990
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321474344.7U Active CN220188792U (en) | 2023-06-09 | 2023-06-09 | Optical lens and vehicle with same |
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| Country | Link |
|---|---|
| CN (1) | CN220188792U (en) |
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2023
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