CN210297875U

CN210297875U - Camera device for mobile terminal and mobile terminal

Info

Publication number: CN210297875U
Application number: CN201921835991.XU
Authority: CN
Inventors: 侯轩; 宋文静; 谢鹏飞
Original assignee: Beijing ByteDance Network Technology Co Ltd
Current assignee: Beijing ByteDance Network Technology Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-04-10
Anticipated expiration: 2029-10-29

Abstract

The disclosure relates to the technical field of camera shooting, in particular to a camera shooting device for a mobile terminal and the mobile terminal. The camera device for the mobile terminal comprises at least one macro lens module, wherein the macro lens module comprises a lens driving device, and a macro lens is installed on the lens driving device; wherein, at least one macro lens is a standard lens or a telephoto lens; the lens driving device is used for moving the macro lens to a focusing position when the distance between a shot object and the macro lens is within the working distance range of the macro lens. The embodiment of the disclosure sets the standard lens or/and the telephoto lens as the macro lens, which has a short-distance working distance range and is specially used for shooting short-distance objects, so that the motor stroke can be fully utilized to realize macro photography, and glare and image distortion cannot be generated.

Description

Camera device for mobile terminal and mobile terminal

Technical Field

The disclosure relates to the technical field of camera shooting, in particular to a camera shooting device for a mobile terminal and the mobile terminal.

Background

The focusing of the camera is to correct the light path by rotating the lens barrel to drive a certain lens or a certain group of lenses in the lens to move back and forth so as to make the imaging clearest. However, the lens of the mobile phone cannot be focused by using a camera due to the limited space of the mobile phone, and a Voice Coil Motor (VCM) is usually used to drive the lens for focusing.

The voice coil motor drives the lens to move so as to change the image distance, so that the shot object becomes clear. However, the voice coil motor has a certain stroke, and beyond the stroke, the focus cannot be clearly focused. Macro photography generally requires shooting the relevant object at close range, and the closer the working distance, the more motor strokes are occupied. Most of the existing mobile phones are equipped with wide-angle lenses, which have short focal length and occupy less motor stroke, so that the existing mobile phone lenses also mostly adopt wide-angle lenses for macro photography. However, with a wide-angle lens, glare and image distortion are likely to occur, and the effect of macro photography is not good. In addition, the working distance of the conventional mobile phone lens (e.g., wide-angle lens) is usually in the range of 10cm to infinity or 8cm to infinity depending on the thickness of the mobile phone and the stroke of the motor, and the working distance cannot achieve a true "macro", for example, 2cm or 1.5cm or less.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

In one aspect, the present disclosure provides a camera device for a mobile terminal, the camera device including at least one macro lens module, the macro lens module including a lens driving device, the lens driving device being mounted with a macro lens; wherein the content of the first and second substances,

at least one macro lens is a standard lens or a telephoto lens;

the lens driving device is used for moving the macro lens to a focusing position when the distance between a shot object and the macro lens is within the working distance range of the macro lens.

In another aspect, the present disclosure provides a terminal, including: the camera device for the mobile terminal comprises a processor and the camera device for the mobile terminal; the processor is used for controlling the lens driving device so as to enable the macro lens to reach a focusing position.

The embodiment of the disclosure sets the standard lens and/or the telephoto lens as the macro lens, which has a short-distance working distance range and is specially used for shooting short-distance objects, so that the motor stroke can be fully utilized to realize macro photography, and glare and image distortion cannot be generated.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an image pickup apparatus for a mobile terminal according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a macro lens module according to an embodiment of the disclosure;

fig. 3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a mobile terminal according to another embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

The image pickup apparatus of the embodiment of the present disclosure is used for a mobile terminal, and may include, but is not limited to, devices such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), and the like. The camera device of the embodiment of the disclosure comprises at least one macro lens module,

referring to fig. 1, fig. 1 illustrates an image pickup apparatus 100 for a mobile terminal according to an embodiment of the present disclosure, which includes at least one macro lens module 200. Referring to fig. 2, the macro lens module 200 includes a lens driving device 201, and a macro lens 202 is mounted inside the lens driving device. Wherein, the macro lens 202 is one of a standard lens or a telephoto lens; the lens driving device is used for moving the macro lens to a focusing position when the distance between a shot object and the macro lens is within the working distance range of the macro lens.

Wherein the macro lens is a lens specially used for macro photography and has a short working distance range. In the present disclosure, the working distance range is a range of distances of objects photographed by the macro lens, that is, the macro lens participates in photographing only when the distance of the photographed objects from the macro lens is within the range. In the present disclosure, the distance between the object to be photographed and the macro lens specifically refers to the distance between the center of the front surface of the macro lens and the object to be photographed. The working distance range is between the minimum working distance and the maximum working distance, and when the distance between the shot object and the macro lens is smaller than the minimum working distance or larger than the maximum working distance, the macro lens does not participate in shooting. Generally, the minimum working distance of the lens is related to the focal length of the lens and the distance of the lens from the photosensitive element. Illustratively, the macro lens of the present disclosure has a working distance range of 0.5cm to 20cm, i.e., the macro lens of the present disclosure is dedicated to photographing objects within a range of 0.5cm to 20cm from the macro lens. When the shot object is in the range, the lens driving device moves the macro lens to the optimal focusing position so as to enable the mobile terminal to clearly image; when the shot object is located outside the range, the mobile terminal does not adopt the macro lens to shoot, the lens driving device does not move the macro lens to focus, and other lenses can be adopted to focus. The lens driving device includes, but is not limited to, a voice coil motor, an ultrasonic motor, a stepping motor, a memory alloy motor, a micro electro mechanical system, and the like.

In this way, the embodiment of the present disclosure sets the standard lens and/or the telephoto lens as the macro lens, which has a short-distance working distance range and is dedicated to shooting objects at a short distance, so that the motor stroke can be fully utilized to realize macro photography, and glare and image distortion are not generated.

In some embodiments, the minimum working distance of the at least one macro lens is 0.5cm to 15cm, and the maximum working distance is 2cm to 20 cm.

In a preferred embodiment, the at least one macro lens is a standard lens having a minimum working distance of 0.5cm to 5cm and a maximum working distance of 2cm to 15 cm. The standard lens generally refers to a photographic lens with an equivalent focal length of 40 to 60 mm, and the perspective and the visual sense of a scene represented by the standard lens are relatively close, which is the most basic photographic lens in all lenses. For example, the following table shows the working distance of a standard lens and its corresponding motor stroke:

the working distance is the distance between the object to be photographed and the macro lens. As can be seen from the above table, when the working distance range of the standard lens is defined as 15cm ∞ to infinity, the occupied motor stroke is 24 μm; when the working distance range of the standard lens is 0.5cm to infinity, the occupied motor stroke is 435 micrometers; when the working distance range of the standard lens is 0.5 cm-20 cm, the occupied motor stroke is 411 μm, which saves the motor stroke of 24 μm compared with the standard lens with the working distance range of 0.5 cm-infinity. Therefore, the macro lens provided by the embodiment of the present disclosure can realize macro photography with a minimum working distance of 0.5cm as long as the maximum available stroke of a motor is greater than or equal to 411 μm.

In another preferred embodiment, at least one macro lens is a telephoto lens having a minimum working distance of 4cm to 15cm and a maximum working distance of 5cm to 20 cm. The long focal length lens is a photographic lens having a focal length longer than an equivalent focal length of a standard lens. The long focal length lens is classified into a general telephoto lens and an ultra telephoto lens. The equivalent focal length of the ordinary telephoto lens is close to that of the standard lens, while the equivalent focal length of the ultra-telephoto lens is far larger than that of the standard lens and can reach more than 300 millimeters. Illustratively, the following table is the working distance of a telephoto lens and its corresponding motor stroke:

as can be seen from the above table, when the working distance range of the telephoto lens is defined as 20cm ∞, the occupied motor stroke is 158 μm; when the working distance range of the telephoto lens is 4cm to infinity, the occupied motor stroke is 901 microns; when the working distance range of the telephoto lens is 4 cm-20 cm, the occupied motor stroke is only 743 μm, which saves 158 μm of motor stroke compared to the telephoto lens with the working distance range of 4 cm-infinity. In addition, the telephoto lens can take a larger image than the standard lens and the wide-angle lens at the same distance due to its long focal length, so that it is possible to perform macro imaging at a slightly longer working distance, and particularly, it is advantageous not to disturb the animal to be photographed the longer the working distance is.

In another preferred embodiment, at least one macro lens is a standard lens, and at least one macro lens is a telephoto lens; wherein, the maximum working distance of the standard lens is not less than the minimum working distance of the telephoto lens. The maximum working distance is the maximum value of the working distance range, and when the distance between the shot object and the macro lens exceeds the maximum working distance, the lens does not participate in shooting; when the distance between the object to be shot and the macro lens is smaller than the minimum working distance, the camera device does not focus. In the embodiment of the disclosure, the image capturing device has at least two macro lens modules, wherein the macro lens of one of the macro lens modules is a standard lens, and the macro lens of the other macro lens module is a telephoto lens. The maximum working distance of the standard lens is not less than the minimum working distance of the telephoto lens, for example, the working distance range of the standard lens is 1cm to 5cm, the working distance range of the telephoto lens is 5cm to 10cm, that is, the maximum working distance of the standard lens is equal to the minimum working distance of the telephoto lens; or the working distance range of the standard lens is 1 cm-10 cm, and the working distance range of the telephoto lens is 9.5-20 cm, namely the maximum working distance of the standard lens is greater than the minimum working distance of the telephoto lens. Therefore, the working distance ranges of the standard lens and the telephoto lens can be matched with each other, on one hand, a larger macro photography range can be further obtained by using the two macro lenses in a limited motor stroke, and on the other hand, different macro lenses can meet different photography scene requirements.

Referring to fig. 3, an embodiment of the present disclosure provides a mobile terminal 300, including: a processor (not shown), and an image pickup apparatus 100, the image pickup apparatus 100 including at least one macro lens module 200. The processor is configured to control a lens driving device (not shown) of the macro lens module 200 to enable a macro lens (not shown) of the macro lens module 100 to reach a focus position. The specific structure of the macro lens module 200, such as the lens driving device and the macro lens, is shown in fig. 2, and will not be described herein. Illustratively, the macro lens of the embodiments of the present disclosure has a working distance range of 1cm to 20cm, that is, the macro lens of the present disclosure is dedicated to photographing objects within a distance range of 1cm to 20cm from the macro lens. When the shot object is in the range, the lens driving device moves the macro lens to the optimal focusing position so as to enable the mobile terminal to clearly image; when the shot object is located outside the range, the mobile terminal does not adopt the macro lens to shoot, the lens driving device does not move the macro lens to focus, and other lenses can be adopted to focus.

Therefore, the embodiment of the disclosure utilizes the characteristics of multiple cameras of the mobile terminal, and the standard lens and/or the telephoto lens are/is set as the special macro lens, so that the macro lens has a short-distance working distance range and is specially used for shooting objects in a short distance, thereby fully utilizing the stroke of the motor to realize macro photography and not generating glare and image distortion.

Referring now to fig. 4, a block diagram of a mobile terminal 600 suitable for use in implementing embodiments of the present disclosure is shown. The terminal device in the embodiments of the present disclosure may include, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), and the like. The terminal device shown in fig. 3 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.

As shown in fig. 3, mobile terminal 600 may include a processing device (e.g., central processing unit, graphics processor, etc.) 601 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage device 608 into a Random Access Memory (RAM) 603. For example, as described above, the processing device 601 may control the lens driving device to bring the macro lens to the in-focus position. In the RAM 603, various programs and data necessary for the operation of the mobile terminal 600 are also stored. The processing device 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.

Generally, the following devices may be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 607 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage 608 including, for example, tape, hard disk, etc.; and a communication device 609. The communication means 609 may allow the mobile terminal 600 to communicate with other devices wirelessly or by wire to exchange data. While fig. 3 illustrates a mobile terminal 600 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.

To sum up, this disclosed embodiment utilizes the characteristics of many cameras of mobile terminal, through setting up standard lens and/or telephoto lens as special macro lens, it has closely working distance scope, is exclusively used in and shoots closely object, consequently can make full use of motor stroke realize macro photography to can not produce dazzling light and picture distortion.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A camera device for a mobile terminal is characterized in that the camera device comprises at least one macro lens module, the macro lens module comprises a lens driving device, and the lens driving device is provided with a macro lens; wherein the content of the first and second substances,

at least one macro lens is a standard lens or a telephoto lens;

2. The camera device for a mobile terminal according to claim 1, wherein at least one of said macro lenses has a minimum working distance of 0.5cm to 15cm and a maximum working distance of 2cm to 20 cm.

3. The camera device for mobile terminal according to claim 1, wherein at least one of said macro lenses is a standard lens having a minimum working distance of 0.5cm to 5cm and a maximum working distance of 2cm to 15 cm.

4. The image pickup device for a mobile terminal according to claim 1, wherein at least one of said macro lenses is a telephoto lens having a minimum working distance of 4cm to 15cm and a maximum working distance of 5cm to 20 cm.

5. The camera device for a mobile terminal according to claim 1, wherein at least one of said macro lenses is a standard lens, and at least one of said macro lenses is a telephoto lens; wherein the content of the first and second substances,

the maximum working distance of the standard lens is not less than the minimum working distance of the telephoto lens.

6. A terminal, characterized in that the terminal comprises: a processor and the camera device for a mobile terminal according to any one of claims 1 to 5; the processor is used for controlling the lens driving device so as to enable the macro lens to reach a focusing position.