CN108519657A - A lens module and mobile terminal - Google Patents

Abstract

A kind of camera lens module of present invention offer and mobile terminal, wherein camera lens module includes diaphragm, and diaphragm has thang-kng region, and thang-kng region includes center and the marginal zone around center；Diaphragm includes a light-transparent substrate, and the position in the corresponding edge area on light-transmission substrate is equipped with electrochromic film；Camera lens module includes that voltage applies element, and voltage applies element and is electrically connected with electrochromic film, and voltage applies the light transmittance variation that element is used to control electrochromic film.The present invention utilizes the diaphragm of camera lens module itself, by the way that electrochromic film is arranged in the diaphragm face of diaphragm, and change the light transmittance of electrochromic film by applying voltage to electrochromic film, realize the thang-kng variable area of diaphragm, so as to realize the adjusting of the aperture to camera lens module, and then the camera shooting flexibility of camera lens module can be improved.

Description

A lens module and mobile terminal

technical field

The invention relates to the technical field of camera equipment, in particular to a lens module and a mobile terminal.

Background technique

With the technical development of mobile terminals such as mobile phones and tablets, most of the mobile terminals are provided with lens modules. Lens modules can be divided into two types: fixed aperture and adjustable aperture. For an adjustable aperture lens module, it is usually necessary to set an aperture adjustment device with a relatively complex structure, which has high requirements for manufacturing and assembly processes. For the fixed aperture lens module, due to its simple structure, the mobile terminal usually adopts the fixed aperture lens module.

Since the aperture cannot be adjusted freely, the camera flexibility of the lens module with fixed aperture is limited. For example, for a lens with a large aperture, its imaging effect is not as good as that of a lens with a small aperture in an environment with good lighting conditions; and for a lens with a small aperture, in an environment with poor lighting conditions, the amount of incoming light cannot meet the camera requirements, so It will also affect its imaging effect.

It can be seen that in the prior art, there is a problem of poor imaging flexibility due to the use of a fixed aperture lens module.

Contents of the invention

Embodiments of the present invention provide a lens module and a mobile terminal to solve the problem of poor imaging flexibility caused by the use of a fixed aperture lens module in the prior art.

In order to solve the problems of the technologies described above, the present invention is achieved in that:

In a first aspect, an embodiment of the present invention provides a lens module, including:

The lens module includes a diaphragm, and the diaphragm has a light-passing area, and the light-passing area includes a central area and an edge area surrounding the central area;

The aperture includes a light-transmitting base, and an electrochromic film is provided on the light-transmitting base at a position corresponding to the edge region;

The lens module includes a voltage applying element, the voltage applying element is electrically connected with the electrochromic film, and the voltage applying element is used to control the light transmittance change of the electrochromic film.

In a second aspect, an embodiment of the present invention provides a mobile terminal, including the lens module described in any one of the first aspect.

In the embodiment of the present invention, the diaphragm of the lens module itself is used to change the light transmittance of the electrochromic film by arranging an electrochromic film on the diaphragm surface of the diaphragm and applying a voltage to the electrochromic film. The light-transmitting area of the diaphragm is variable, so that the adjustment of the diaphragm of the lens module can be realized, and the flexibility of shooting of the lens module can be improved.

Description of drawings

Fig. 1 is a schematic diagram of the light-passing area of the diaphragm of the lens module;

Fig. 2 is a schematic diagram of an electrochromic film arranged on a diaphragm of a lens module;

Fig. 3 is a schematic diagram of the electrochromic film when electrified;

Fig. 4 is a schematic diagram of the diaphragm formed by the aperture diaphragm of the lens module;

Fig. 5 is a schematic diagram of an arrangement method of an electrochromic film;

Fig. 6 is a schematic diagram of another arrangement method of an electrochromic film;

Fig. 7 is a schematic structural view of electrode pins arranged on the lens barrel.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in FIGS. 1 to 3 , an embodiment of the present invention provides a lens module. The lens module includes a diaphragm 1 . The diaphragm 1 has a light-transmitting area 11 . The edge region 112; the diaphragm 1 includes a light-transmitting substrate 12, and the position of the corresponding edge region 112 on the light-transmitting substrate 12 is provided with an electrochromic film 3, and the light transmittance of the electrochromic film 3 can be changed, so that The light-passing area 11 changes; the lens module includes a voltage applying element 4 , the voltage applying element 4 is electrically connected to the electrochromic film 3 , and the voltage applying element 4 is used to control the light transmittance change of the electrochromic film 3 .

The improvement point of the embodiment of the present invention is that the aperture 1 of the lens module itself (the aperture 1 can be formed by the optical lens of the lens module, or can be formed by the aperture diaphragm of the lens module), by The electrochromic film 3 is arranged on the diaphragm surface of the diaphragm 1 (that is, the surface of the light-transmitting substrate 12), and the electrochromic film 3 is changed by applying a voltage to the electrochromic film 3 (a voltage is applied to the electrochromic film 3 through the voltage applying element 4). The light transmittance of the electrochromic film 3 is used to realize the adjustable aperture of the lens module.

When in use, users can flexibly choose two shooting modes: large aperture and small aperture according to shooting needs. For example, in an environment with good lighting conditions, the user can apply a voltage to the electrochromic film 3 in a certain way (for example, inputting an aperture adjustment trigger command, pressing the aperture adjustment button, etc.), so that the electrochromic film 3 The color becomes darker under the action of the electric field, thereby obtaining a smaller aperture of the lens module; in an environment with poor lighting conditions, the user can use a certain method (for example, inputting an aperture adjustment trigger command, pressing the aperture adjustment button, etc.) The voltage applied to the electrochromic film 3 is disconnected to make the color of the electrochromic film 3 lighter, thereby obtaining a larger aperture of the lens module. It can be seen that the embodiments of the present invention can improve the imaging flexibility of the lens module.

Among them, the diaphragm refers to the object that limits the light beam in the optical system. Its role can be divided into two aspects: limiting the light beam, or limiting the size of the field of view (or imaging range). The diaphragm can be the edge of the optical lens, the frame of the optical lens, the lens barrel or the aperture diaphragm, etc. The diaphragm has a clear area, which is the property of the diaphragm itself, and any diaphragm has a clear area.

Among them, the electrochromic film refers to a film with electrochromism (Electrochromism, EC) characteristics. Electrochromism is a phenomenon in which the color of a material changes reversibly under the action of an external electric field (which can be formed by a voltage application element). Many transition group metal oxides have electrochromic properties, such as tungsten W (Tungsten), molybdenum Mo (Molybdenum), vanadium V (Vanadium), niobium Nb (Niobium), titanium Ti (Titanium), iridium Ir (Iridium), rhodium Rh (Rhodon), nickel Ni (Nickel) or cobalt Co (Cobalt) and other oxides, in one embodiment, tungsten trioxide WO3 is used as a material in the electrochromic film.

In the embodiment of the present invention, the light-transmitting area 11 of the diaphragm 1 includes a central area 111 and an edge area 112 surrounding the central area 111, and the diaphragm 1 includes a light-transmitting base 12, which at least corresponds to the light-transmitting area 11. The edge area 112 is arranged so that the electrochromic film 3 can be arranged on the light-transmitting substrate 12 at a position corresponding to the edge area 112 .

Here, the central area 111 and the edge area 112 are not two areas that actually exist physically. The central area 111 and the edge area 112 can be considered as two hypothetical areas introduced for the convenience of explaining the arrangement of the electrochromic film 3 . That is, the area where the electrochromic film 3 is located can be understood as the edge area 112 , and the central area surrounded by the electrochromic film 3 can be understood as the central area 111 .

In one embodiment, as shown in FIG. 2 , the electrochromic film 3 may include an electrochromic layer 31 , an ion conducting layer 32 and an ion storage layer 33 arranged in sequence. in:

The electrochromic layer 31 is formed of electrochromic material. When the electrochromic film 3 is energized, the layer absorbs ions to darken the color and reduce the light transmittance, thereby realizing the function of blocking light; when the electrochromic film 3 is not energized, the layer is lighter or transparent in color, High light transmittance, able to pass light.

The ion conducting layer 32 is used for conducting ions.

The ion storage layer 33 is used for storing ions. When the electrochromic film 3 is energized, the ions stored in the ion storage layer 33 move to the electrochromic layer 31 and are absorbed by the electrochromic layer 31 to realize the color change of the electrochromic layer 31 .

In one embodiment, the diaphragm of the lens module is formed by the optical lens of the lens module, and the lens body of the optical lens forms the light-transmitting base of the diaphragm.

In one embodiment, as shown in Figure 4, the diaphragm of the lens module is formed by the aperture diaphragm 5 of the lens module, the aperture diaphragm 5 includes a light-shielding main body 51, and the middle part of the light-shielding main body 51 offers a light-through hole 52 , the light-through hole 52 forms the light-through region of the diaphragm; the light-transmitting base 12 of the aperture stop plate 5 is disposed in the light-through hole 52 . Wherein, A in FIG. 4 corresponds to the aperture of the original light aperture 52 of the aperture stop plate 5 , and B in FIG. 4 corresponds to the aperture formed by the electrochromic film 3 after electrification.

Here, the light-transmitting base 12 of the aperture stop plate 5 can be arranged in a ring along the edge of the light-through hole 52; the light-transmitting base 12 of the aperture stop plate 5 can also cover the entire light-through hole 52; this embodiment of the present invention Not limited.

In one embodiment, as shown in FIG. 5 to FIG. 7, the voltage applying element 4 includes a first electrode pin 41 and a second electrode pin 42, and the first electrode pin 41 and the second electrode pin 42 are respectively connected to the electric The chromic film 3 is electrically connected. In the embodiment of the present invention, the voltage applying element 4 is not limited to using electrode pins, for example, wires may be used as the voltage applying element 4 . Using the electrode pins as the voltage applying element 4 can improve the stability of the electrical connection between the voltage applying element 4 and the electrochromic film 3 .

In one embodiment, in order to protect the electrochromic layer 31 and the ion storage layer 33 , a light-transmitting conductive layer 34 may be disposed on the electrochromic layer 31 and the ion storage layer 33 respectively.

In one embodiment, as shown in FIG. 5 , the electrochromic film 3 includes a first light-transmitting conductive layer 341 , an ion storage layer 33 , an ion-conducting layer 32 , and an electrochromic layer 31 sequentially disposed on the light-transmitting substrate 12 . and the second light-transmitting conductive layer 342; the first electrode pin 41 is electrically connected to the first light-transmitting conductive layer 341, and the second electrode pin 42 is electrically connected to the second light-transmitting conductive layer 342; the first electrode pin 41 is The positive pole pin, the second electrode pin 42 is a negative pole pin.

In one embodiment, as shown in FIG. 6 , the electrochromic film 3 includes a first light-transmitting conductive layer 341 , an electrochromic layer 31 , an ion-conducting layer 32 , and an ion-storage layer 33 sequentially disposed on the light-transmitting substrate 12 and the second light-transmitting conductive layer 342; the first electrode pin 41 is electrically connected to the first light-transmitting conductive layer 341, and the second electrode pin 42 is electrically connected to the second light-transmitting conductive layer 342; the first electrode pin 41 is The negative pole pin, the second electrode pin 42 is the positive pole pin.

In one embodiment, each layer of the electrochromic film 3 can be sequentially plated on the light-transmitting substrate 12 by a deposition method to form the electrochromic film 3; in one embodiment, the layers of the electrochromic film 3 can be coated by a coating method Each layer of the electrochromic film 3 is sequentially coated on the light-transmitting substrate 12 to form the electrochromic film 3 . This embodiment of the present invention does not limit it.

In one embodiment, the first light-transmitting conductive layer 341 includes a first region (not shown in the figure) and a second region 3411, and the other layers of the electrochromic film 3 except the first light-transmitting conductive layer 341 are set In the first area, the second area 3411 is an exposed area not covered by other layers of the electrochromic film 3 except the first light-transmitting conductive layer 341, and the first conductive adhesive layer 6 is arranged in the second area 3411 , the second transparent conductive layer 342 is provided with a second conductive adhesive layer 7, the first electrode pin 41 is electrically connected to the first transparent conductive layer 341 through the first conductive adhesive layer 6, and the second electrode pin 42 is electrically connected to the first transparent conductive layer 341 through the first conductive adhesive layer 6. The second conductive adhesive layer 7 is electrically connected to the second transparent conductive layer 342 .

In this embodiment, the electrical connection between the electrode pins and the electrochromic film 3 is realized through the conductive adhesive layer, which can improve the stability of the electrical connection between the electrode pins and the electrochromic film 3 .

In the embodiment of the present invention, the thickness of the first conductive adhesive layer 6 and the second conductive adhesive layer 7 should be adapted to the arrangement height of the first electrode pin 41 and the second electrode pin 42 . When the heights of the first electrode pins 41 and the second electrode pins 42 are the same, the thickness of the first conductive adhesive layer 6 should be greater than the thickness of the second conductive adhesive layer 7 .

In one embodiment, the first conductive adhesive layer 6 and the second conductive adhesive layer 7 are both conductive double-sided adhesives.

In one embodiment, as shown in FIG. 7 , the lens module further includes a lens barrel 8 ; the first electrode pin 41 and the second electrode pin 42 are embedded on the lens barrel 8 .

In this embodiment, the first electrode pin 41 and the second electrode pin 42 are embedded on the lens barrel 8, so that the first electrode pin 41 and the second electrode pin 42 form an integral body with the lens barrel 8, with Better reliability and consistency.

In one embodiment, both the first electrode pin 41 and the second electrode pin 42 are injection-molded on the lens barrel 8 . In this way, the stability between the first electrode pin 41 and the second electrode pin 42 and the lens barrel 8 can be improved.

It should be noted that, in the prior art, the aperture adjustment of the lens module is realized by setting an aperture adjustment device with a relatively complex structure, which not only has a complex structure, but also has poor assembly reliability due to the high mechanical precision requirements of the optical system. In the embodiment of the present invention, the variable aperture of the lens module is built into a conventional lens module with a fixed aperture, and assembly can be realized through a conventional lens assembly process, which not only has a simple structure, but also has higher assembly reliability.

In addition, adjusting the aperture of the lens module by setting an aperture adjustment device with a relatively complex structure will also cause the overall thickness of the lens module to affect the thickness of the whole machine. In the embodiment of the present invention, the variable aperture of the lens module is built into the conventional lens module with fixed aperture. Since the thickness of the electrochromic film and the electrode pins are far smaller than the thickness of the lens, there is almost no Increase the overall thickness of the lens module. This makes the lens module of the embodiment of the present invention suitable for mobile terminals such as mobile phones and tablets.

Embodiments of the present invention also relate to a mobile terminal, including any lens module in the foregoing embodiments. For other descriptions in the embodiments of the present invention, reference may be made to the above-mentioned related descriptions, and the same beneficial effect can be achieved. In order to avoid repetition, details are not repeated here.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A lens module, characterized in that, The lens module includes a diaphragm, and the diaphragm has a light-passing area, and the light-passing area includes a central area and an edge area surrounding the central area; The aperture includes a light-transmitting base, and an electrochromic film is provided on the light-transmitting base at a position corresponding to the edge region; The lens module includes a voltage applying element, the voltage applying element is electrically connected with the electrochromic film, and the voltage applying element is used to control the light transmittance change of the electrochromic film. 2. The lens module according to claim 1, characterized in that, The diaphragm is formed by an optical lens whose lens body forms the light-transmissive base. 3. The lens module according to claim 1, characterized in that, The aperture is formed by an aperture diaphragm, and the aperture diaphragm includes a light-shielding body, a light-through hole is opened in the middle of the light-shielding body, and the light-through hole forms the light-through area; The light-transmitting base is disposed in the light-through hole. 4. The lens module according to claim 3, characterized in that, The light-transmitting base is arranged in a ring shape along the edge of the light-through hole; or, The light-transmitting base covers the entire light-through hole. 5. The lens module according to any one of claims 1 to 4, characterized in that, The voltage applying element includes a first electrode pin and a second electrode pin, and the first electrode pin and the second electrode pin are respectively electrically connected to the electrochromic film. 6. The lens module according to claim 5, characterized in that, The electrochromic film includes a first light-transmitting conductive layer, an ion storage layer, an ion-conducting layer, an electrochromic layer, and a second light-transmitting conductive layer sequentially arranged on the light-transmitting substrate; The first electrode pin is electrically connected to the first light-transmitting conductive layer, and the second electrode pin is electrically connected to the second light-transmitting conductive layer; The first electrode pin is a positive pole pin, and the second electrode pin is a negative pole pin. 7. The lens module according to claim 5, characterized in that, The electrochromic film includes a first light-transmitting conductive layer, an electrochromic layer, an ion conducting layer, an ion storage layer, and a second light-transmitting conductive layer arranged sequentially on the light-transmitting substrate; The first electrode pin is electrically connected to the first light-transmitting conductive layer, and the second electrode pin is electrically connected to the second light-transmitting conductive layer; The first electrode pin is a negative pole pin, and the second electrode pin is a positive pole pin. 8. The lens module according to claim 6 or 7, characterized in that, The first light-transmitting conductive layer includes a first region and a second region; The other layers of the electrochromic film except the first light-transmitting conductive layer are arranged in the first region; The second region is provided with a first conductive adhesive layer, the second light-transmitting conductive layer is provided with a second conductive adhesive layer, and the first electrode pin is connected to the first conductive adhesive layer through the first conductive adhesive layer. The light-transmitting conductive layer is electrically connected, and the second electrode pin is electrically connected to the second light-transmitting conductive layer through the second conductive adhesive layer. 9. The lens module according to claim 5, characterized in that, The lens module also includes a lens barrel; The first electrode pins and the second electrode pins are embedded on the lens barrel. 10. A mobile terminal, comprising the lens module according to any one of claims 1-9.