CN218183377U

CN218183377U - Hand-shake prevention system for handheld device

Info

Publication number: CN218183377U
Application number: CN202222032229.6U
Authority: CN
Inventors: 金际远
Original assignee: Silicon Touch Tech Inc
Current assignee: Silicon Touch Tech Inc
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-12-30
Anticipated expiration: 2032-08-03

Abstract

A hand shake prevention system for a handheld device mainly comprises: the liquid crystal lens is arranged in a lens module and provided with a first substrate and a second substrate, the first substrate and the second substrate are coated with a liquid crystal automatic focusing unit at intervals, the liquid crystal lens adopts a circular hole mode, and a first electrode and a second electrode are respectively arranged on the first substrate and the second substrate outwards and used for supplying power to adjust and change the focal length of the liquid crystal lens; a hand-held device, in which the lens module is installed and on which a hand-shake prevention image control processing unit is installed, mainly composed of Hall sensor in the hand-held device and gyroscope to sense data integration to control the focal length of the liquid crystal lens. The whole combination structure is simple, no moving parts are provided, the cost is low, the material can be saved, the lens of the handheld device can be further compressed to reduce the thickness, and the effect of preventing hand shake in photography is effectively improved.

Description

Hand-shake prevention system for handheld device

Technical Field

The present invention relates to the field of anti-shake technology for photography, and more particularly to an anti-shake system for a handheld device.

Background

With the technological progress, the existing handheld devices such as tablet computers or smart phones are equipped with lens modules, have the functions of photographing or video recording, and bring rich visual enjoyment to people. However, the conventional handheld device often shakes during photographing, so that the photographed image becomes blurred, and as the requirements of users on the image quality increase, the anti-vibration function of the lens module becomes more and more important.

There are probably two current approaches to the art of vibration protection for hand held devices.

Optical Image Stabilization (OIS) is implemented by adjusting the direction of an Optical path to move a lens module to adjust and focus an Optical frame, and is usually implemented by a Voice Coil Motor (VCM) technology with high precision and fast response.

2 electronic EIS (electronic Image Stabilization), when the Image frame is detected by the Image sensor to have abnormal movement, adjusting at the Image sensor end without any other moving parts, processing by the software of the Image sensor, analyzing the Image on the sensor by a later computer software algorithm, collecting the degree of shaking of the machine body, and using a firmware algorithm to compensate the Image overlap by calculation so as to avoid optical capture blurring.

In fact, when controlling image capture, the conventional anti-shake method is easy to obtain the variation of the Y-axis and the X-axis, which can be adjusted by moving the lens set through the interaction between the lens set and the gyroscope, and is generally divided into three stages: 1. gyroscope data acquisition and filtering. 2. Integrating gyroscope data. 3. And the VCM voice coil motor and the Hall sensor are used for controlling the driving mirror group. However, the rotation variation about the Z-axis is not easy to obtain, and the data obtained through two gyroscopes are generally needed to be subsequently calculated. The overall design has many parts, complex combination, slow response speed and imperfect application, and is difficult to meet the current development trend of light, thin, short and small handheld devices and the requirement of pursuing high-quality images of cameras.

SUMMERY OF THE UTILITY MODEL

In view of this, the main object of the present invention is to provide a hand-shake preventing system for a handheld device, which mainly comprises:

the liquid crystal lens is arranged in a lens module and provided with a first substrate and a second substrate, the first substrate and the second substrate are coated with a liquid crystal automatic focusing unit at intervals, the liquid crystal lens adopts a circular hole mode, and the first substrate and the second substrate are externally provided with a first electrode and a second electrode respectively for power connection so as to adjust and change the focal length of the liquid crystal lens;

a hand-held device, in which the lens module is installed and on which a hand-shake prevention image control processing unit is installed, mainly composed of Hall sensor in the hand-held device and gyroscope to sense data integration to control the focus of the liquid crystal lens.

In a preferred embodiment, the liquid crystal lens further comprises: at least one optical lens, but not limited to this, providing an optical recording function and the liquid crystal automatic focusing unit is a transmissive liquid crystal panel, which is disposed at the rear end of the optical lens to adjust the refractive index of the optical lens and the refractive index of the shot image through refractive index deflection adjustment, thereby achieving the function of focusing the shot image.

In a preferred embodiment, the liquid crystal auto-focusing unit comprises:

at least one rubber frame, the inside is poured with the liquid crystal;

at least two alignment layers, which make the arrangement direction of liquid crystal molecules uniform and provide a pre-tilt angle of liquid crystal, and are respectively combined on two sides of the rubber frame to seal the rubber frame;

at least two ITO conductive glass layers are respectively and correspondingly combined on the outer sides of the two alignment layers, the first electrode and the second electrode are respectively arranged on the two ITO conductive glass layers, and two glass substrates are respectively and correspondingly combined on the outer sides of the two ITO conductive glass layers to form the first substrate and the second substrate.

In a preferred embodiment, the liquid crystal in the frame is pre-programmed to the optical properties of the concave lens.

In a preferred embodiment, the liquid crystal in the frame is pre-programmed to the optical characteristics of the convex lens.

In a preferred embodiment, the anti-shake image control processing unit is disposed at the rear end of the lens module and connected to the liquid crystal lens to receive the image of the photographed image passing through the lens module, process and convert the photographed image outputted from the liquid crystal automatic focusing unit to determine whether the photographed image is out of focus, and output a driving signal to perform the automatic focusing processing on the liquid crystal lens, and the anti-shake image control processing unit is pre-stored with the focus curve function numerical data of the voltage value of the driving signal corresponding to the focus value of the photographed image of the lens module, so as to calculate the focus of the photographed image and output an actual focus value.

Compared with the prior art, the utility model discloses hand-held device hand shock proof system's advantage lies in: the whole combination structure is simple, no moving parts are arranged, the cost is low, materials can be saved, the lens of the handheld device can be further compressed to reduce the thickness, the effect of preventing hand shake during photographing is effectively improved, photographing becomes easier, and images are clearer.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is an illustration of an application of the present invention.

Fig. 3 is a schematic structural diagram of the liquid crystal lens of the present invention.

Fig. 4A-4C are schematic diagrams illustrating the operation of the anti-shake automatic focusing device of the present invention.

Description of the symbols:

100: hand shake prevention system of handheld device

1: liquid crystal lens

10: lens module

11: first substrate

12: second substrate

13: optical lens

111: a first electrode

121: second electrode

15: liquid crystal automatic focusing unit

151: rubber frame

150: liquid crystal display device

152: alignment layer

153: ITO conductive glass layer

2: hand-held device

20: anti-shake image control processing unit

21: hall sensor

22: gyroscope

25: an image sensor.

Detailed Description

For the purpose of facilitating understanding of the contents of the present invention and the effects achieved thereby, the following detailed description will be made with reference to the accompanying drawings: referring to fig. 1 to 3, a hand-shake preventing system 100 for a handheld device according to the present invention mainly includes:

a liquid crystal lens 1 disposed in a lens module 10, the liquid crystal lens 1 having a first substrate 11 and a second substrate 12, the first substrate 11 and the second substrate 12 being spaced apart from each other and covering a liquid crystal auto-focusing unit 15, the liquid crystal lens 1 adopting a circular hole mode, the first substrate 11 and the second substrate 12 being externally disposed with a first electrode 111 and a second electrode 121 respectively for receiving power to adjust and change a focal length of the liquid crystal lens 1, and;

a handheld device 2, which is provided with the lens module 10 therein and an anti-shake image control processing unit 20 thereon, and is mainly composed of a hall sensor 21 in the handheld device 2 and a gyroscope 22 for sensing data integration to control the focal length of the liquid crystal lens 1.

In a preferred embodiment, the liquid crystal lens 1 further includes: at least one optical lens 13, but not limited thereto, for providing an optical recording function; the liquid crystal automatic focusing unit 15 is a transmissive liquid crystal panel, which is disposed at the rear end of the optical lens 13, and adjusts the refractive index of the optical lens 13 and the photographed image through refractive index deflection adjustment, thereby achieving the function of focusing the photographed image.

In a preferred embodiment, as shown in fig. 3, the liquid crystal auto-focusing unit 15 comprises:

at least one frame 151 filled with liquid crystal 150;

at least two alignment layers 152, which align the liquid crystal molecules and provide a pre-tilt angle for the liquid crystal, are respectively bonded to the two sides of the frame 151 to seal the frame 151;

at least two ITO conductive glass layers 153 respectively and correspondingly combined to the outer sides of the two alignment layers 152, wherein the first electrode 111 and the second electrode 121 are respectively disposed on the two ITO conductive glass layers 153, and two glass substrates are respectively and correspondingly combined to the outer sides of the two ITO conductive glass layers 153 to form the first substrate 11 and the second substrate 12.

In a preferred embodiment, the liquid crystal 150 in the frame 151 is pre-programmed to the optical characteristics of the concave lens.

In a preferred embodiment, the liquid crystal 150 in the sealant 151 is pre-patterned into the optical characteristics of a convex lens.

In a preferred embodiment, as shown in fig. 3, the anti-shake image control processing unit 20 is disposed at the rear end of the lens module 10 and connected to the liquid crystal lens 1 to receive the image of the photographed image passing through the lens module 10 and process and convert the photographed image outputted from the liquid crystal automatic focusing unit 15, so as to determine whether the photographed image is out of focus, and output a driving signal to perform the automatic focusing processing on the liquid crystal of the liquid crystal lens 1, and the anti-shake image control processing unit 20 is pre-stored with the focus curve function numerical data of the voltage value of the driving signal corresponding to the focus value of the photographed image of the lens module 10, so as to calculate the focus value of the photographed image and output an actual focus value.

Therefore, as shown in fig. 1 to 4C, the present invention is applied to integrate the data obtained from the Y axis and the X axis of the gyroscope 22 and the data corresponding to the hall sensor 21 with the liquid crystal lens 1 in the lens module 10 of the handheld device 2 and the control circuit, and then drive the liquid crystal lens 1 to change the voltage to drive the image to focus, and the moving distance can be known by the change of the voltage. Therefore, once the image is shaken during photographing, the refractive index of the liquid crystal lens 1 can be changed by applying a voltage, and the images with different focal lengths can be displayed on one side of the substrate through simple control, so that the images can be quickly responded and effectively corrected and adjusted.

The utility model discloses have following two benefits in the application at least:

1. the liquid crystal lens 1 of the utility model is electronically controlled and non-mechanically moved, so the reaction can be faster.

2. The utility model discloses a relative adjustment is not used to its image sensor 25 of liquid crystal lens 1, so can be more favorable to getting for instance the enlargement to the remote.

Compared with the prior art, the utility model discloses the advantage of the hand-held device hand shock prevention system 100 lies in: the whole combined structure is simple, without moving parts, the cost is low, the material can be saved, the design key point is mainly controlled on the Z axis of the camera, different from the prior general technology, the traditional method mostly utilizes the Voice Coil Motor displacement, although the best effect of image acquisition can be realized, the best effect is usually limited by the factor of the thickness of the handheld device 2, the lens group can not provide too large space, especially the lens group is clumsy in application in a mobile phone, and the lens module 10 of the utility model adopts the round hole type liquid crystal lens 1, can utilize smaller space on the Z axis in application, and can obtain better anti-hand-shake image adjusting effect, so that the lens of the handheld device 2 can be further compressed to reduce the thickness, effectively improve the effect of anti-hand-shake during photographing, the photographing becomes easier, and the image acquisition is clearer.

To sum up, the utility model discloses novel practical accords with the essential of patent completely, and the below provides novel patent application. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; therefore, all equivalent changes and modifications made according to the claims and the specification of the present invention should fall within the scope covered by the present invention.

Claims

1. A hand shake prevention system for a handheld device mainly comprises:

a hand-held device, in which the lens module is installed and on which a hand-vibration-proof image control processing unit is installed, which is mainly composed of Hall sensor in the hand-held device and gyroscope sensing data integration to control the focal length of the liquid crystal lens.

2. The hand-held device anti-shake system of claim 1, wherein the liquid crystal lens further comprises: at least one optical lens for providing optical recording function; the liquid crystal automatic focusing unit is a transmission liquid crystal panel which is arranged at the rear end of the optical lens to adjust the refractive index of the optical lens and the shot image shot by the optical lens through refractive index deflection adjustment so as to achieve the function of focusing the shot image.

3. The hand-held device shake mitigation system of claim 1, wherein the liquid crystal autofocus unit comprises: at least one rubber frame, the inside is poured with the liquid crystal;

4. The system of claim 3, wherein the liquid crystal in the plastic frame is pre-programmed to the optical characteristics of the concave lens.

5. The system of claim 3, wherein the liquid crystal in the plastic frame is pre-patterned to have the optical characteristics of a convex lens.

6. The hand-held device anti-shake system as claimed in claim 1, wherein the anti-shake image control processing unit is disposed at the rear end of the lens module and connected to the liquid crystal lens for receiving the image of the photographed image passing through the lens module, processing and converting the photographed image outputted from the liquid crystal auto-focusing unit to determine whether the photographed image is out of focus, and outputting a driving signal for auto-focusing the liquid crystal of the liquid crystal lens, and the anti-shake image control processing unit is pre-stored with a focus curve function numerical data of the voltage value of the driving signal corresponding to the focus value of the photographed image of the lens module, so as to calculate the focus value of the photographed image and output an actual focus value.