CN203444162U - Optical zoom structure of camera lens - Google Patents

Abstract

The utility model discloses an optical zoom structure of a camera lens, comprising a zoom lens group arranged in front of or behind a lens module along the optical axis of the camera, for changing the focal length of an image refracted by the lens module, and providing a zoom effect that the lens module of the camera cannot achieve originally. The zoom lens group at least comprises a liquid lens, and a group of positive and negative electrodes electrically connected to a host of the camera, the liquid lens having a curved surface, the curvature of which can be adjusted after the positive and negative electrodes are energized, thereby changing the focal length of an image of a photographed object on the camera after passing through the liquid lens, so that the optical zoom can be achieved with a minimum volume without moving the optical lens.

Description

Optical zoom structure of camera lens

technical field

The utility model relates to a technology related to a camera device, in particular to an optical zoom structure applied to the camera device, which can achieve the purpose of optical zoom with the smallest volume without moving the optical lens.

Background technique

In recent years, with the advancement of science and technology, electronic imaging devices are constantly developing towards thinner, smaller and multifunctional. Unlike traditional cameras that record images through chemical changes on the film caused by light, electronic imaging devices use image Sensing elements convert optical images into electronic data. In addition to digital cameras and video cameras, most 3C products such as mobile phones, tablet computers, and PDAs also have the functions of taking photos and recording videos, and have many advantages such as instant viewing and editing, and convenient storage of photos. They have become portable camera tools that are different from the traditional camera market. .

Among the various imaging devices mentioned above, whether it is a general camera or a digital camera to achieve the purpose of optical zoom, the zoom lens is used to change the focal length of the imaged object on the imaging device to obtain a better shooting effect. And the existing zoom lens is made up of elements such as an aperture, a plurality of optical lenses, and a driving unit that drives the optical lenses to move back and forth. The optical lens needs to move space, so that the zoom lens must occupy a considerable volume in the design, and the design of the movable optical lens on the moving structure and the driving unit is relatively complicated, and the cost is also quite expensive, so that these zoom lenses are in the market. The application has been greatly restricted.

For example, among the aforementioned 3C products with camera devices, mobile phone camera modules, monitors, and even thin and light digital cameras, etc., are limited by size and weight, and basically can only be installed with fixed-focus lenses with simple structures. Then, the purpose of zooming is achieved through program repair and mathematical calculation, but this kind of method belongs to the enlargement of partial images, that is, the so-called "digital zoom", which does not change the focal length optically, so while "zooming", it will reduce the The imaging quality of the camera device.

Although the above-mentioned "digital zoom" can improve the image pixel and imaging quality resolution of the camera device through the advancement of image sensor technology such as CCD and CMOS, the effective focal length of the fixed-focus lens is a fixed value. Moreover, the imaging picture is calculated digitally, and it is still impossible to shoot objects with different distances at the same position like an optical zoom lens, and obtain a clear image; Like a zoom lens, the effect achieved by using optical principles to change the focal length.

In view of this, the inventor of the present utility model has accumulated many years of research and practical experience in related fields, and specially created an optical zoom structure of the camera lens to overcome the conventional optical zoom lens. Limiting flaws.

Contents of the invention

The purpose of this utility model is to provide an optical zoom structure applied to the camera device. The zoom structure is installed in front or behind the lens module of the camera device, so as to change the focal length of the refracted image of the lens module and achieve the change with the smallest volume. The imaging focal length function provides a zoom effect that the lens module of the camera device cannot achieve originally.

In order to achieve the above object, the optical zoom structure of the camera lens of the present invention includes a zoom lens group arranged in front of or behind the lens module along the optical axis of the camera device, wherein the zoom lens group at least includes a liquid lens, And a set of positive and negative electrodes that are electrically connected to the main body of the imaging device. The liquid lens has a curved surface. The above focal length enables zooming to be achieved with the smallest volume without moving the optical lens.

Through the above structure, the positive and negative electrodes of the zoom lens group can change the curvature of the liquid lens after being energized, so the focal length of the refracted image of the lens module can be changed without moving the optical lens, allowing the user to shoot far and near at the same position Objects with different distances can provide a zoom effect that cannot be achieved by the camera device, and effectively solve the problem of the space required for expansion and contraction and the weight of the traditional optical zoom lens.

The implementation of each element is further described below:

During implementation, at least one control module for controlling the zoom lens group to change the curvature of the curved surface of the liquid lens is provided on the host of the camera device. The control module operates with a built-in program, accepts the user's control instructions, and then generates signals according to the instructions, and controls the voltage/current leading to the positive and negative electrodes of the zoom lens group according to the signals to change the optical characteristics of the liquid lens, so that the liquid lens Driven by different voltages/currents, the curvature of the curved surface is changed to achieve the zoom effect desired by the user.

During implementation, the zoom lens group is arranged behind the lens module, and the zoom lens group is further provided with at least one optical lens along the optical axis between the liquid lens and the camera main body.

During implementation, the zoom lens group is arranged behind the lens module, and the zoom lens group is further provided with at least one optical lens between the liquid lens and the lens module along the optical axis.

During implementation, the zoom lens group is arranged in front of the lens module, and the zoom lens group is further provided with at least one optical lens between the liquid lens and the lens module along the optical axis.

During implementation, the zoom lens group is arranged in front of the lens module, and the zoom lens group is further provided with at least one optical lens in front of the liquid lens along the optical axis.

Compared with the prior art, the utility model can change the curvature of the curved surface of the liquid lens by using voltage/current, and then change the focal length of the imaging device, and can achieve optical zoom with the smallest volume without moving the optical lens. The purpose is to provide a zoom effect that the lens module of the camera device cannot achieve originally, and to solve the shortcomings of conventional optical zoom lenses that are too large and heavy to be installed on some camera devices.

Description of drawings

Fig. 1 is a structural schematic diagram of the first embodiment of the present utility model.

Fig. 2 is a structural schematic diagram of the second embodiment of the present utility model.

Fig. 3 is a structural schematic diagram of the third embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the fourth embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a fifth embodiment of the present invention.

Explanation of reference signs: 100-camera device; 200-lens module; 10-zoom lens group; 11-liquid lens; 12-positive and negative electrodes; 13-optical lens; 20-control module.

Detailed ways

According to the technical means of the present invention, enumerate the embodiment that is suitable for the present invention below, and coordinate drawing description as follows:

As shown in Figure 1, the optical zoom structure of the camera lens of the present invention includes a zoom lens group 10 arranged in front of or behind the lens module 200 along the optical axis of the camera device 100, wherein the zoom lens group 10 is at least It includes a liquid lens 11 and a set of positive and negative electrodes 12 electrically connected to the main body of the imaging device 100. The liquid lens 11 has a curved surface. After the liquid lens 11 is powered on, the curvature of the curved surface can be adjusted to change the The focal length of the subject being imaged on the imaging device 100 after passing through the liquid lens 11 enables optical zooming to be achieved with the smallest volume without moving the optical lens.

During implementation, the host of the imaging device 100 is provided with a control module 20 capable of controlling the zoom lens group 10 to change the curvature of the liquid lens 11 . The control module 20 operates with a built-in program, accepts the user's control command, and then generates a signal according to the command, and controls the voltage/current leading to the positive and negative electrodes 12 of the zoom lens group 10 according to the signal, so as to change the optical properties of the liquid lens 11. The characteristics allow the liquid lens 11 to change the curvature of the curved surface under different voltages/currents, so as to achieve the desired zoom effect of the user.

In the illustration, the zoom lens group 10 is arranged behind the lens module 200 of a general digital camera, and the zoom lens group 10 can change the curvature of the liquid lens 11 after being powered on, without installing multiple optical lenses or moving the optical lenses. Under certain circumstances, changing the focal length of the refracted image of the lens module 200 allows the user to shoot objects at different distances at the same position, providing a zoom effect that the lens module 200 of the camera device 100 cannot achieve originally, and effectively improving the traditional optical zoom lens. Problems of space and heavy weight.

As shown in Figure 2, the zoom lens group 10 is arranged behind the lens module 200, and the zoom lens group 10 is further provided with at least one optical lens 13 between the liquid lens 11 and the host of the imaging device 100 along the optical axis; or, zooming The lens group 10 is further provided with at least one optical lens 13 between the liquid lens 11 and the lens module 200 along the optical axis; in the figure, a plurality of optical lenses 13 are respectively arranged in front of and behind the liquid lens 11 .

As shown in Figure 3, the zoom lens group 10 is arranged in front of the lens module 200, and the zoom lens group 10 is further provided with at least one optical lens 13 between the liquid lens 11 and the lens module 200 along the optical axis; or, the The zoom lens group 10 is further provided with at least one optical lens 13 along the optical axis in front of the liquid lens 11;

In practice, the aforementioned imaging device 100 can be a digital camera, a single-lens digital camera, a monitor, a mobile phone, a tablet computer, a microscope, a medical endoscope/microscope, and the like. For example, the imaging device 100 shown in FIG. 4 is a mobile phone, and the imaging device 100 shown in FIG. 5 is a tablet computer, and the zoom lens group 10 is arranged in front or behind the lens module 200 of the mobile phone or tablet computer, so that The lens module 200 changes the focal length of the refracted image, and achieves the effect of changing the focal length of the lens with the smallest volume, providing an optical zoom effect that the lens module 200 of the mobile phone cannot achieve originally.

The above description of the utility model is illustrative rather than restrictive. Those skilled in the art understand that many modifications, changes or equivalents can be made to it within the spirit and scope of the claims, but they will all fall into the Into the scope of protection of the present utility model.

Claims (6)

1. The optical zoom structure of camera lens, it is characterized in that, comprise a zoom lens group that is arranged on lens module front or rear along the optical axis of camera device, described zoom lens group at least comprises a liquid lens and a A set of positive and negative electrodes electrically connected to the main body of the imaging device, the liquid lens has a curved surface, and the liquid lens modifies the curvature of the curved surface after being energized, thereby changing the focal length of the imaged object on the imaging device after passing through the liquid lens . 2 . The optical zoom structure of the lens of the imaging device according to claim 1 , wherein the host of the imaging device is provided with a control module for controlling the zoom lens group to change the curvature of the curved surface of the liquid lens. 3 . 3. The optical zoom structure of the imaging device lens as claimed in claim 1, wherein the zoom lens group is arranged behind the lens module, and the zoom lens group is further arranged between the liquid lens and the camera main body along the optical axis. There is at least one optical lens. 4. The optical zoom structure of the camera lens according to claim 1 or 3, wherein the zoom lens group is further provided with at least one optical lens between the liquid lens and the lens module along the optical axis. 5. The optical zoom structure of the imaging device lens according to claim 1, wherein the zoom lens group is arranged in front of the lens module, and the zoom lens group is further arranged between the liquid lens and the lens module along the optical axis. at least one optical lens. 6 . The optical zoom structure of camera lens according to claim 1 or 5 , characterized in that, the zoom lens group is further provided with at least one optical lens in front of the liquid lens along the optical axis. 6 .

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