WO2020088316A1

WO2020088316A1 - Fill light module and terminal device

Info

Publication number: WO2020088316A1
Application number: PCT/CN2019/112679
Authority: WO
Inventors: 聂磊
Original assignee: 维沃移动通信（杭州）有限公司
Priority date: 2018-10-30
Filing date: 2019-10-23
Publication date: 2020-05-07
Also published as: CN109151288A; CN109151288B

Abstract

The present disclosure provides a fill light module, comprising a fill light (100), a shape memory alloy (SMA) motor (200), and a light distribution lens (300) arranged opposite to the fill light (100); the SMA motor (200) is connected to the light distribution lens (300) and drives the light distribution lens (300) to move in a direction away from or toward the fill light (100). The present disclosure also provides a terminal device.

Description

Fill light module and terminal equipment

Cross-reference of related applications

This application claims the priority of Chinese Patent Application No. 201811278312.3. Filed in China on October 30, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to a fill light module and terminal equipment.

Background technique

With the development of terminal equipment, terminal equipment is continuously updated and iterated while integrating more and more functions. In order to obtain better shooting effects, more and more terminal devices are currently equipped with at least two cameras in the same shooting direction. For example, currently many terminal devices are equipped with dual rear cameras.

In order to improve shooting performance, the terminal device includes at least two cameras with unequal angles of view, and unequal focal lengths if the angles of view of the cameras are not equal. The larger the focal length of the camera, the correspondingly the smaller the angle of view of the camera; the smaller the focal length of the camera, the correspondingly the larger the angle of view of the camera. The terminal device is equipped with at least two cameras with unequal field angles, which can indirectly achieve the purpose of zoom shooting by switching the camera work, so as to meet different shooting needs of users.

The terminal device is usually also equipped with a fill light module, which can fill the light for the camera shooting, and thus enable the terminal device to complete the shooting in a dark environment (such as dark night, cloudy day, dark basement, etc.). However, the fill angle setting of the fill light module of the current terminal device cannot simultaneously match at least two cameras with different viewing angles, and thus the purpose of matching fill light cannot be achieved. For example, when the fill light angle of the fill light module is If the camera with a large field of view angle is matched, if the camera with a small field of view angle is switched for shooting, the fill light module has a large fill light area, resulting in a low utilization rate of light intensity. When the fill light angle of the fill light module matches a camera with a small field of view, if a camera with a large field of view is switched for shooting, part of the shooting area cannot be filled with light, which affects the fill light effect.

Summary of the invention

The present disclosure discloses a fill light module to solve the problem that the fill light module of the current terminal device cannot match cameras with different field angles to shoot.

In order to solve the above problems, the present disclosure adopts the following technical solutions:

A fill light module includes a fill light, an SMA motor and a light distribution lens opposite to the fill light, the SMA motor is connected to the light distribution lens, and drives the light distribution lens away or Move closer to the fill light.

A terminal device includes a housing and the above-mentioned fill light module, and the fill light module is disposed in the case.

The technical scheme adopted by the present disclosure can achieve the following beneficial effects:

In the fill light module disclosed in this embodiment, the light distribution lens is disposed opposite to the fill light, and further distributes light for the fill light. The light distribution lens is connected to the SMA motor, and can be moved by the SMA motor to adjust the distance from the fill light. The change of the distance between the light distribution lens and the fill light can change the fill light angle of the fill light area, so that the fill light module can adapt to the shooting of cameras with different angles of view. It can be seen that the fill light modules disclosed in some embodiments of the present disclosure can solve the problem that the current fill light module cannot match cameras with different field angles to shoot.

BRIEF DESCRIPTION

The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments and descriptions of the present disclosure are used to explain the present disclosure and do not constitute an undue limitation on the present disclosure. In the drawings:

FIG. 1 is a partial structural schematic diagram of a terminal device disclosed in some embodiments of the present disclosure when the fill light module is in a working state;

FIG. 2 is a schematic diagram of a position change of a fill light module of a terminal device disclosed in some embodiments of the present disclosure.

Description of reference signs:

100-fill light, 200-SMA motor, 210-mounting slot, 300-light distribution lens, 400-power supply substrate, 500-shield cover, 600-circuit board, 700-battery cover, 710-mounting hole.

detailed description

In order to make the purpose, technical solutions and advantages of the present disclosure more clear, the technical solutions of the present disclosure will be described clearly and completely in conjunction with specific embodiments of the present disclosure and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present disclosure.

The technical solutions disclosed in the embodiments of the present disclosure will be described in detail below in conjunction with the drawings.

Please refer to FIGS. 1 and 2. Some embodiments of the present disclosure disclose a fill light module. The disclosed fill light module is used to fill light for a camera shot of a terminal device. The disclosed fill light module includes a fill light 100, a shape memory alloy (SMA) motor 200, and a light distribution lens 300.

The light distribution lens 300 is opposite to the fill light 100. The light distribution lens 300 is used to distribute light generated by the fill light 100, and finally, the light can pass through the light distribution lens 300 to form a fill light area.

The SMA motor 200 is connected to the light distribution lens 300. The SMA motor 200 is used to drive the light distribution lens 300 to move away from or close to the fill light 100. In the actual working process, the SMA motor 200 can drive the light distribution lens 300 to move away from the fill light 100, or drive the light distribution lens 300 to move closer to the fill light 100. The movement of the light distribution lens 300 can adjust the distance between the light distribution lens 300 and the fill light 100, and thus the fill light angle of the fill light area formed by the light of the fill light 100 passing through the light distribution lens 300 can be changed. When the fill light angle of the fill light area changes, it can be matched with cameras with different viewing angles.

In the fill light module disclosed in some embodiments of the present disclosure, the light distribution lens 300 is disposed opposite to the fill light 100, and further distributes light to the fill light 100. The light distribution lens 300 is connected to the SMA motor 200 and can be moved by the driving of the fill light 100 to adjust the distance from the fill light 100. The change in the distance between the light distribution lens 300 and the SMA motor 200 can change the fill light angle of the fill light area, so that the fill light module can adapt to the shooting of cameras with different field angles. It can be seen that the fill light modules disclosed in some embodiments of the present disclosure can solve the problem that the current fill light module cannot match cameras with different field angles to shoot.

The core component of the SMA motor 200 is shape memory metal. Its biggest characteristic is that when the temperature of the material itself changes, its shape will change, and there is a corresponding relationship between the deformation amount and the temperature. It also has the conductivity and ductility of the metal itself. When the current I passes through the SMA component, its own resistance is R, and its heating power is P. According to the formula P = I * I * R, the material itself will generate heat and deform in a specific direction after the temperature rises. Based on the correspondence between the deformation amount and temperature, the heating power is proportional to the square of the current, that is, the deformation amount of the SMA material can be controlled by controlling the current size. Based on the above principle, the SMA motor changes the shape of the internal structural components by controlling the current, and drives the internal movable components to move in a specific direction. In some embodiments of the present disclosure, the SMA motor 200 is connected to the light distribution lens 300, thereby driving the light distribution lens 300 to move. The SMA motor 200 is a well-known product, and its structure will not be detailed here.

The fill light module disclosed in some embodiments of the present disclosure may further include a power supply substrate 400, and the SMA motor 200 is installed on the power supply substrate 400 and fixedly connected to the power supply substrate 400. The power supply substrate 400 provides an installation basis for the SMA motor 200, and at the same time provides electrical energy for the operation of the SMA motor 200. In order to facilitate the assembly of the power supply substrate 400 in the terminal device, in an optional solution, the power supply substrate 400 may be a flexible circuit board.

In order to facilitate assembly and improve the stability of assembly, in an optional solution, a mounting groove 210 may be provided on the support surface of the SMA motor 200, and the light distribution lens 300 may be fixed in the mounting groove 210.

The fill light modules disclosed in some embodiments of the present disclosure are usually installed on the terminal equipment. In order to reduce electromagnetic interference caused by other components of the terminal equipment, in alternative solutions, the fill light modules disclosed in some embodiments of the present disclosure further The shield case 500 may be included, and the shield case 500 covers the SMA motor 200. Specifically, the shield cover 500 may be a metal cover.

In the actual design process, the movement of the light distribution lens 300 can change the fill angle of the fill area. A corresponding relationship can be established between the fill light angle and the current size of the SMA motor 200. When the user needs a fill light area at a fill light angle, the current size of the SMA motor 200 can be directly controlled. Based on this, in an optional solution, the fill light module disclosed in some embodiments of the present disclosure may further include a controller, and the light emitted by the fill light 100 passes through the light distribution lens 300 to form a fill light area. The controller controls the current size of the SMA motor 200 according to the relationship between the fill angle of the fill light area and the current size of the SMA motor 200.

Based on the fill light modules disclosed in some embodiments of the present disclosure, some embodiments of the present disclosure disclose a terminal device. The disclosed terminal device includes a housing and a fill light module disposed in the housing, the fill light module For the fill light module described in the above embodiment, please refer to the description of the corresponding part in the above embodiment for details, which will not be repeated here.

A circuit board 600 is usually provided in the housing. The fill light 100 may be installed on the circuit board 600. The fill light 100 is electrically connected to the circuit board 600, and then the circuit board 600 supplies power. In this embodiment, the circuit board may be a main board of the terminal device or a sub-board of the terminal device. This embodiment does not limit the specific type of the circuit board 600.

Generally, the housing includes a battery cover 700, and a mounting hole 710 is opened on the battery cover 700, and the light emitting end of the light distribution lens 300 can extend into the mounting hole 710, which can make the fill light 100 proceed toward the rear side of the terminal Fill light.

The terminal devices disclosed in some embodiments of the present disclosure may be smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), etc. Some embodiments of the present disclosure do not limit the specific types of terminal devices.

The above embodiments of the present disclosure mainly describe the differences between the various embodiments. As long as there is no contradiction, the different optimization features between the various embodiments can be combined to form a better embodiment. Considering the conciseness of the text, here is No longer.

The above are only the embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the scope of the claims of the present disclosure.

Claims

A fill light module, including a fill light (100), a shape memory alloy SMA motor (200) and a light distribution lens (300) opposite to the fill light (100), the SMA motor (200) It is connected to the light distribution lens (300) and drives the light distribution lens (300) to move away from or close to the fill light (100).
The fill light module according to claim 1, further comprising a power supply substrate (400), and the SMA motor (200) is mounted on the power supply substrate (400) and fixedly connected to the power supply substrate (400).
The fill light module according to claim 2, wherein the power supply substrate (400) is a flexible circuit board.
The fill light module according to claim 1, wherein a mounting groove (210) is provided on a supporting surface of the SMA motor (200), and the light distribution lens (300) is fixed in the mounting groove (210) in.
The fill light module according to claim 1, further comprising a shield cover (500), the shield cover (500) covering the SMA motor (200).
The fill light module according to claim 1, further comprising a controller, the light emitted by the fill light (100) passes through the light distribution lens (300) to form a fill light area, and the controller according to the fill light The relationship between the fill angle of the area and the current magnitude of the SMA motor (200) controls the current magnitude of the SMA motor (200).
A terminal device includes a housing and the fill light module according to any one of claims 1-6, the fill light module is disposed in the housing.
The terminal device according to claim 7, wherein a circuit board (600) is provided in the housing, and the fill light (100) is mounted on the circuit board (600).
The terminal device according to claim 7, wherein the housing includes a battery cover (700), the battery cover (700) is provided with a mounting hole (710), and the light exit end of the light distribution lens (300) extends Into the mounting hole (710).
The terminal device according to any one of claims 7-9, wherein the terminal device is a smart phone, a tablet computer, an e-book reader, or a wearable device.