CN112666679B - Camera module of mobile communication equipment and mobile communication equipment with camera module - Google Patents
Camera module of mobile communication equipment and mobile communication equipment with camera module Download PDFInfo
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- CN112666679B CN112666679B CN201910982958.8A CN201910982958A CN112666679B CN 112666679 B CN112666679 B CN 112666679B CN 201910982958 A CN201910982958 A CN 201910982958A CN 112666679 B CN112666679 B CN 112666679B
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Abstract
The invention discloses a camera module of mobile communication equipment and mobile communication equipment with the same, wherein the camera module of the mobile communication equipment comprises: a first lens group, wherein the lenses in the first lens group are plastic lenses, and the first lens group comprises a first lens and a second lens; the second lens group comprises a chalcogenide glass lens, and a fourth lens, wherein the focal length of the first lens is 4.71-6.71 mm, the focal length of the second lens is 13.5-19.5 mm, and the focal length of the fourth lens is 4.22-8.22 mm. The camera module of the mobile communication equipment has the advantages of capability of infrared imaging, good imaging effect, simple preparation process, high production efficiency, low cost and the like.
Description
Technical Field
The invention relates to the technical field of communication equipment manufacturing, in particular to a camera module of mobile communication equipment and the mobile communication equipment with the camera module of the mobile communication equipment.
Background
In the related art, the mobile communication device having the camera has a single function, and when a picture is taken in an environment with weak light at night, the picture needs to be taken in the form of exposure or the like so as to illuminate an object to be taken and a background thereof. However, such a photographing mode may cause interference to the ecological environment, for example, it is not suitable for photographing animals fearing light, and the functionality and applicability of the mobile communication device are affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the camera module of the mobile communication equipment has the advantages of capability of infrared imaging, good imaging effect, simple preparation process, high production efficiency, low cost and the like.
The invention also provides the mobile communication equipment with the camera module of the mobile communication equipment.
To achieve the above object, according to an embodiment of a first aspect of the present invention, a camera module of a mobile communication device is provided, the camera module of the mobile communication device includes: a first lens group, wherein the lenses in the first lens group are plastic lenses, and the first lens group comprises a first lens and a second lens; the second lens group comprises a chalcogenide glass lens, and a fourth lens, wherein the focal length of the first lens is 4.71-6.71 mm, the focal length of the second lens is 13.5-19.5 mm, and the focal length of the fourth lens is 4.22-8.22 mm.
The camera module of the mobile communication equipment has the advantages of capability of infrared imaging, good imaging effect, simple preparation process, high production efficiency, low cost and the like.
In addition, the camera module of the mobile communication device according to the above embodiment of the present invention may further have the following additional technical features:
according to some embodiments of the invention, the camera module further comprises an imaging device provided with an imaging surface, the second lens group being closer to the imaging surface than the first lens group.
According to some embodiments of the present invention, the second lens group includes an infrared lens therein, and the first lens, the second lens, and the fourth lens are all aspheric lenses.
According to some embodiments of the invention, a surface of the fourth lens is provided with a binary optical surface.
According to some embodiments of the invention, the first lens group and the second lens group are coaxially disposed.
According to some embodiments of the invention, the first lens is provided with an aperture stop; the second lens is arranged between the first lens and the second lens group.
According to some embodiments of the invention, the first lens group further comprises: a third lens having a focal length of-11.07 to-7.07 millimeters, the third lens being disposed between the second lens and the second lens group.
According to some embodiments of the present invention, the refractive index of the first lens and the second lens is 1.2 to 1.8, the refractive index of the third lens is 1.3 to 1.9, the refractive index of the fourth lens is 2.5 to 3.1, the abbe numbers of the first lens, the second lens and the third lens are 50 to 70, the abbe number of the fourth lens is 120 to 180, the distance between the first lens and the second lens is 0.4 to 0.8 mm, the distance between the second lens and the third lens is 0.2 to 0.6 mm, and the distance between the third lens and the fourth lens is 0.2 to 0.6 mm.
According to some embodiments of the present invention, the focal length of the camera module is 3-4 mm, and the total length of the camera module is 4-5 mm.
An embodiment according to a second aspect of the present invention proposes a mobile communication device comprising the camera module of the mobile communication device according to the embodiment of the first aspect of the present invention.
According to the mobile communication equipment provided by the embodiment of the invention, by utilizing the camera module of the mobile communication equipment provided by the embodiment of the first aspect of the invention, the camera module has the advantages of capability of performing infrared imaging, good imaging effect, simple preparation process, high production efficiency, low cost and the like.
Additional aspects and advantages of the invention 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 invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a mobile communication device according to an embodiment of the present invention.
Fig. 2 is a sectional view of a camera module of a mobile communication device according to an embodiment of the present invention.
Fig. 3 is a diagram of a transfer function of a camera module of a mobile communication device according to an embodiment of the present invention.
Fig. 4 is a field curvature and distortion diagram of a camera module of a mobile communication device according to an embodiment of the present invention.
Reference numerals: the mobile communication device 10, the camera module 1, the first lens 110, the aperture stop 111, the second lens 120, the third lens 130, the fourth lens 210, the imaging surface 301, the infrared flash 2, the high brightness flash 21, the warm light flash 22, the telephoto camera 31, and the near camera 32.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The camera module 1 of the mobile communication apparatus according to the embodiment of the present invention is described below with reference to the drawings.
As shown in fig. 1 to 4, a camera module 1 of a mobile communication apparatus according to an embodiment of the present invention includes a first lens group and a second lens group.
The lenses in the first lens group are plastic lenses, and the first lens group includes a first lens 110 and a second lens 120. The lenses in the second lens group are chalcogenide glass lenses, the second lens group comprises a fourth lens 210, wherein the focal length of the first lens 110 is 4.71-6.71 mm, the focal length of the second lens 120 is 13.5-19.5 mm, and the focal length of the fourth lens 210 is 4.22-8.22 mm.
According to the camera module 1 of the mobile communication device, by arranging the first lens group and the second lens group, one part of lenses in the camera module 1 can be made of plastic, and the other part of lenses can be made of chalcogenide glass. Compare the camera module that all adopts glass preparation among the correlation technique, use plastic lens can reduce the technological level and the preparation requirement to lens processing preparation, improve the production efficiency of lens, reduce the manufacturing cost of lens to improve the production efficiency of camera module 1, reduce the manufacturing cost of camera module 1. Simultaneously, use plastic lens can also alleviate camera module 1's weight, improve camera module 1's application scope and set up the flexibility.
And, by arranging the first lens 110, the second lens 120 and the fourth lens 210, the focal length of the first lens 110 is set to be 4.71-6.71 mm, the focal length of the second lens 120 is set to be 13.5-19.5 mm, and the focal length of the fourth lens 210 is set to be 4.22-8.22 mm. Through mutually supporting between each lens like this, make camera module 1 can collect the infrared radiation who comes from target object and background environment to make camera module 1 have the infrared imaging function, can utilize the infrared light to shoot photo and video, be convenient for camera module 1 shoot photo and video under the condition of no visual exposure, camera module 1 can shoot the photo in the less strong environment of night light promptly without exposing. Therefore, interference to the ecological environment caused by taking pictures in an exposure mode is avoided, for example, the camera module 1 can be used for taking pictures of animals in a normal state at night, and the phenomenon that only the astonishing expressions of the animals can be taken due to convulsion of the animals afraid of brightness caused by exposure is avoided. Therefore, the application range of the camera assembly 1 is conveniently increased, the functionality and the applicability of the mobile communication device 10 are improved, and the use experience of a user is improved.
In addition, by making each lens have a proper focal length range, it is convenient for each lens to work together to improve the imaging quality of the camera assembly 1, and the overall size range of the camera assembly 1 is controlled, so that the camera module 1 can be miniaturized to be suitable for the mobile communication device 10 with a smaller size. Meanwhile, the distribution of the focal lengths of the lenses is beneficial to balancing the diopters of the lenses, reducing the sensitivity of the lenses, reducing the generation of aberration and increasing the processing efficiency and yield of the lenses.
Therefore, the camera module 1 of the mobile communication device according to the embodiment of the invention has the advantages of capability of performing infrared imaging, good imaging effect, simple preparation process, high production efficiency, low cost and the like.
The camera module 1 of the mobile communication device 10 according to the embodiment of the present invention is described below with reference to the drawings.
In some embodiments of the present invention, as shown in fig. 1-4, a camera module 1 of a mobile communication device 10 according to an embodiment of the present invention includes a first lens group and a second lens group.
In some embodiments of the present invention, as shown in fig. 2, the camera module 1 further comprises an imaging device, the imaging device is provided with an imaging surface 301, and the second lens group is closer to the imaging surface 301 than the first lens group. So not only be convenient for utilize imaging device to form images, make camera module 1 can smoothly shoot the photo, can utilize in addition first lens group is right the second lens subassembly is protected, is about to plastic lens establishes in chalcogenide glass lens's the outside to utilize plastic lens to protect chalcogenide glass lens, avoid the weaker chalcogenide glass lens of mechanical strength to receive wearing and tearing or damage, be convenient for improve camera module 1's operational reliability and life.
Specifically, as shown in fig. 2, the fourth lens 210 is a thermo-compression molded aspherical lens. Therefore, the time and the economic cost for manufacturing the fourth lens 210 can be effectively reduced, the diffraction efficiency and the imaging quality of the fourth lens 210 are improved, and the imaging effect of the fourth lens 210 is improved.
Optionally, the first lens 110, the second lens 120, and the fourth lens 210 are all aspheric lenses. Thus, each lens has a better curvature radius, and good aberration correction can be maintained, so that the camera module 1 has excellent sharpness and higher resolution, and meanwhile, the overall size of the camera module 1 can be smaller, and the miniaturization design of the camera module 1 is realized.
Further, the surface of the fourth lens 210 is provided with a binary optical surface. Thus, the diffraction efficiency and the imaging quality of the camera module 1 can be greatly improved.
It should be understood here that the term "binary optical surface" refers to a structure having a binary optical characteristic formed on the surface of the aspheric lens, for example, a stepped surface having a binary optical characteristic is formed.
Specifically, the first lens 110 is provided with an aperture stop, and the second lens 120 is provided between the first lens 110 and the second lens group. Specifically, the aperture stop 111 may be used to control the amount of light passing through the camera module 1. This can improve the imaging quality of the camera module 1. Simultaneously, the heat that still enables camera module 1 diffuses fast.
In some embodiments of the present invention, the first lens group further includes a third lens 130, a focal length of the third lens 130 is-11.07 to-7.07 mm, and the third lens 130 is disposed between the second lens 120 and the second lens group. This further facilitates improving the imaging quality of the camera module 1.
Specifically, the third lens 130 is also an aspherical lens.
In some embodiments of the present invention, the refractive index of the first lens 110 and the second lens 120 is 1.2 to 1.8, the refractive index of the third lens 130 is 1.3 to 1.9, and the refractive index of the fourth lens 210 is 2.5 to 3.1. The first lens 110, the second lens 120 and the third lens 130 have Abbe numbers of 50-70, and the fourth lens 210 has Abbe numbers of 120-180. The distance between the first lens 110 and the second lens 120 is 0.4-0.8 mm, the distance between the second lens 120 and the third lens 130 is 0.2-0.6 mm, and the distance between the third lens 130 and the fourth lens 210 is 0.2-0.6 mm. Therefore, each lens in the camera module 1 has a proper parameter range, the imaging quality of the first lens group and the second lens group is improved conveniently, and the overall size of the camera module 1 is controlled. Meanwhile, the diopter of each lens is balanced, the sensitivity of the lens is reduced, the generation of aberration is reduced, and the imaging quality of the camera module 1 is improved.
Optionally, the focal length of camera module is 3 ~ 4 millimeters, the overall length of camera module is 4 ~ 5 millimeters. This makes the camera module 1 smaller and more compact, which facilitates the application of the camera module 1 to the mobile communication device 10.
In some embodiments of the present invention, the focal length of the fourth lens 210 is 6.22 ± 0.1 mm, the refractive index of the fourth lens 210 is 2.7759, and the abbe number is 146.77. This allows the fourth lens 210 to have a suitable parameter range, which improves the imaging quality of the fourth lens 210, and thus improves the usage requirements of the mobile communication device 10 for pixels.
Optionally, the first lens group and the second lens group are coaxially disposed. Specifically, each lens in the first lens group is coaxially disposed with each lens in the second lens group, respectively. It should be understood that "coaxially disposed" means that the plurality of lenses are disposed on the same optical axis. Can be convenient for like this light smoothly propagate in camera module 1, improve camera module 1's the effect of making a video recording.
In some embodiments of the present invention, a distance between the first lens group and the second lens group is 0.44 ± 0.1 mm. Like this guarantee under camera module 1 has the better image quality's of formation of image the condition, can reduce camera module 1's overall dimension, make camera module 1's compact structure rationally.
Optionally, a back intercept of the second lens group is 1 ± 0.1 mm. That is, the rear working distance of the second lens group is greater than 1 ± 0.1 mm.
Specifically, the lenses in the first lens group and the second lens group are both aspherical lenses. Thus, each lens has a better curvature radius, and good aberration correction can be maintained, so that the camera module 1 has excellent sharpness and higher resolution, and meanwhile, the overall size of the camera module 1 can be smaller, and the miniaturization design of the camera module 1 is realized.
In some embodiments of the present invention, as shown in fig. 2, the first lens group includes a first lens 110, a second lens 120, and a third lens 130, and the first lens 110 is provided with an aperture stop 111. The second lens 120 is disposed between the first lens 110 and the second lens group. The third lens 130 is disposed between the second lens 120 and the second lens group. Specifically, the first lens 110, the second lens 120, and the third lens 130 are sequentially disposed in a direction from being distant from the imaging surface 301 to being close to the imaging surface 301. Therefore, the imaging effect of the first lens group can be improved, and the imaging quality of the camera module 1 can be improved. Simultaneously, the heat that still enables camera module 1 diffuses fast.
Specifically, the aperture stop 111 may be used to control the amount of light passing through the camera module 1.
According to some embodiments of the present invention, the camera module 1 includes a first lens 110, a second lens 120, a third lens 130, and a fourth lens 210. The first lens 110 is provided with an aperture stop 111. The second lens 120 is disposed between the first lens 110 and the fourth lens 210. The third lens 130 is disposed between the second lens 120 and the fourth lens 210. The distance between the third lens 130 and the fourth lens 210 is 0.44 ± 0.1 mm.
In some embodiments of the present invention, the focal length of the first lens 110 is 5.71 ± 0.1 mm, the focal length of the second lens 120 is 16.5 ± 0.1 mm, and the focal length of the third lens 130 is-9.07 ± 0.1 mm. More specifically, the distance between the first lens 110 and the second lens 120 is 0.63 ± 0.03 mm, and the distance between the second lens 120 and the third lens 130 is 0.44 ± 0.05 mm. Alternatively, the refractive index of the first lens 110 and the second lens 120 is 1.491, the abbe number is 57.2, the refractive index of the third lens 130 is 1.58, and the abbe number is 58. Therefore, each lens in the first lens group can have a proper parameter range, so that the lenses can be matched with each other conveniently, the imaging quality of the first lens group is improved together, the whole size range of the first lens group is controlled, and the camera module 1 can be miniaturized to be suitable for the mobile communication equipment 10 with a smaller size. Meanwhile, the diopter of each lens is balanced, the sensitivity of the lens is reduced, the generation of aberration is reduced, and the processing efficiency and yield of the lens are increased.
In some embodiments of the present invention, the focal length of the camera module 1 is 3.6 ± 0.15 mm, and the total length of the camera module 1 is 4.4 ± 0.1 mm. This makes the camera module 1 smaller and more compact, which facilitates the application of the camera module 1 to the mobile communication device 10.
Optionally, the half-image height of the camera module 1 is 2.5 ± 0.1 mm.
Specifically, the highest resolution of the camera module 1 is 1200 × 1600.
In the embodiment of the present invention, as shown in fig. 3, in the transfer function diagram of the camera module 1, the value of the transfer function at 50 line pairs is greater than 0.58 ± 0.01, and the requirements for the infrared camera are generally: the transfer function value at the position of the 25 line pairs is more than 0.2, so that the design requirement can be met, and the camera module 1 has the obvious advantage of imaging quality compared with the common infrared camera. As shown in fig. 4, in the field curvature and distortion diagram of the camera module 1, the field curvature of the full field of view is controlled within ± 0.1 ± 0.03, and the distortion is controlled within ± 1.
A mobile communication device 10 according to an embodiment of the present invention is described below. The mobile communication apparatus 10 according to the embodiment of the present invention includes the camera module 1 of the mobile communication apparatus 10 according to the above-described embodiment of the present invention.
Optionally, the mobile communication device 10 further includes an infrared flash 2 for supplementing light to the camera module 1. Specifically, the wavelength of the infrared flash lamp 2 is 850-. Can improve the infrared light intensity of surrounding environment like this, increase camera module 1's infrared light admission volume, improve the definition that camera module 1 shot the picture.
Further, the camera module 1 and the infrared flash 2 are disposed adjacent to each other. Can improve the light filling effect of infrared flash lamp 2 to camera module 1 like this.
Optionally, the mobile communication device 10 further comprises a telephoto camera 31 and a near-to camera 32. This may increase the functionality and range of applicability of the mobile communication device 10 for taking pictures, which may facilitate the mobile communication device 10 taking pictures in a variety of environments and improve the convenience of use of the mobile communication device 10.
Further, the mobile communication device 10 further comprises a high-brightness flash 21 and a warm-brightness flash 22, wherein the high-brightness flash 21 is a high-brightness LED white light, and the warm-brightness flash 22 is an amber LED warm light.
According to the mobile communication device 10 of the embodiment of the present invention, by using the camera module 1 of the mobile communication device 10 according to the above-described embodiment of the present invention, the camera module 1 has the advantages of being capable of performing infrared imaging, good in imaging effect, simple in manufacturing process, high in production efficiency, low in cost, and the like. The mobile communication device 10 has a night shooting function, and can meet the user's needs for shooting at night by using the mobile communication device 10, for example, the user's needs for understanding animal activity habits.
Other constructions and operations of the mobile communication device 10 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A camera module of a mobile communication device, comprising:
a first lens group, wherein the lenses in the first lens group are plastic lenses, and the first lens group comprises a first lens and a second lens;
a second lens group, wherein the lenses in the second lens group are chalcogenide glass lenses, the second lens group comprises a fourth lens,
the focal length of the first lens is 4.71-6.71 mm, the focal length of the second lens is 13.5-19.5 mm, and the focal length of the fourth lens is 4.22-8.22 mm; the first lens group further includes:
a third lens having a focal length of-11.07 to-7.07 millimeters, the third lens being disposed between the second lens and the second lens group.
2. The camera module of a mobile communication device of claim 1, further comprising an imaging device, said imaging device being provided with an imaging surface, said second lens group being closer to said imaging surface than said first lens group.
3. The camera module of claim 1, wherein the first lens, the second lens and the fourth lens are aspheric lenses.
4. The camera module of claim 1, wherein a surface of the fourth lens is provided with a binary optical surface.
5. The camera module of claim 4, wherein the first lens group and the second lens group are coaxially disposed.
6. The camera module of a mobile communication device according to claim 1, wherein the first lens is provided with an aperture stop; the second lens is arranged between the first lens and the second lens group.
7. The camera module of claim 1, wherein the refractive index of the first lens and the second lens is 1.2-1.8, the refractive index of the third lens is 1.3-1.9, the refractive index of the fourth lens is 2.5-3.1,
the abbe numbers of the first lens, the second lens and the third lens are 50-70, the abbe number of the fourth lens is 120-180,
the distance between the first lens and the second lens is 0.4-0.8 mm, the distance between the second lens and the third lens is 0.2-0.6 mm, and the distance between the third lens and the fourth lens is 0.2-0.6 mm.
8. The camera module of claim 1, wherein the camera module has a focal length of 3-4 mm and a total length of 4-5 mm.
9. A mobile communication device, characterized in that it comprises a camera module according to any one of claims 1-8.
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