TW201818137A - Image stabilizing device for camera - Google Patents

Abstract

An image stabilizing device for camera includes a fixed base and a movable platform. The fixed base includes at least two fixed guide rods and a body of fixed base, and the fixed guide rods are disposed on the body of fixed base. The movable platform includes two movable guide rods and a body of movable platform, and the fixed guide rods are disposed on the body of movable platform. Wherein the fixed guide rods are contacted with the fixed guide rods, and the movable platform is movably connected to the fixed base. The image stabilizing device further includes a plurality of elastic bodies, one end of the plurality of elastic bodies is connected to the body of movable platform, and the other end of the plurality of elastic bodies is connected to the body of fixed base. Thus, the fixed guide rods are tightly contacted with the movable guide rods.

Description

Image stabilizer of shooting device

The invention relates to an image stabilizer, in particular to an image stabilizer used in a shooting device.

An image stabilizer is usually set at the position of the lens imaging in the shooting device, and the image sensor for receiving the lens imaging is set on the image stabilizer. When the shooting device senses the occurrence of shaking, it passes through the The image stabilizer can adjust the position of the image sensor to keep the lens image clear and not blurred.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of a conventional image sensor used in a shooting device. The image stabilizer 1 includes a base 10, a horizontal sliding frame 31, and a vertical sliding frame 32, and an image The sensor 2 is disposed on the vertical sliding frame 32. By changing the positions of the horizontal sliding frame 31 and the vertical sliding frame 32 relative to the base 10, the horizontal and vertical positions of the image sensor 2 relative to the lens can be adjusted.

The image stabilizer 1 further includes two lateral guide rails 11 and two longitudinal guide rails 313, both of which are metal round rods and are embedded in the base 10, so that the horizontal sliding frame 31 can move axially along the two lateral guide rails 11 The two longitudinal rails 313, which are also metal round rods, are embedded in the lateral sliding frame 31, so that the longitudinal sliding frame 32 is combined with the lateral sliding frame in a manner that can move axially along the two longitudinal rails 313 31 on.

In addition, a lateral reference magnet 20a and a longitudinal reference magnet 20b are respectively provided on the base 10, and a lateral drive coil 40a and a longitudinal drive coil 40b are respectively provided on the longitudinal carriage 32 corresponding to the lateral reference magnet 20a and the longitudinal direction At the position of the reference magnet 20b, when the camera detects the shaking of the user's hand, the internal circuit (not shown) of the camera will induce an appropriate current to the horizontal drive coil 40a and the vertical drive coil 40b, so that the horizontal drive coil 40a and the longitudinal drive coil 40b generate a corresponding magnetic field, and the horizontal reference magnet 20a and the longitudinal reference magnet 20b attract or repel to drive the longitudinal slide 32 provided with an image sensor to generate relative to the base The horizontal and vertical movements of 10 adjust the position of the image sensor 2 to keep the lens imaging clear and not blurred.

However, the frictional forces generated by these guide rails in axial sliding contact between the base 10, the horizontal sliding frame 31, and the longitudinal sliding frame 32, respectively, and the actuation gap between these components will make the overall operation not smooth, As a result, the compensation sensitivity of the image stabilizer decreases.

In view of this, the image stabilizer of the shooting device of the present invention uses a plurality of guide shafts to directly contact each other as a contact point for a mobile platform to move relative to a fixed base, so as to reduce the guide rails from the base and the horizontal and vertical directions, respectively, as is conventional The frictional force generated during the axial sliding contact between the sliding frames, and through a plurality of elastic bodies, the mobile platform and the fixed seat are in close contact with each other, reducing the action gap between the mobile platform and the fixed seat, thereby improving the image Compensation sensitivity of the stabilizer.

A preferred embodiment of the image stabilizer of the shooting device of the present invention includes a fixed base, a moving platform, and a plurality of elastic bodies. The fixed base includes at least two fixed base guide shafts and a fixed base body. The fixed base guide shafts The mobile platform includes two mobile platform guide shafts and a mobile platform body. The mobile platform guide shafts are disposed on the mobile platform body. The fixed base guide shaft and the mobile platform The guide shafts are in contact with each other, and the mobile platform is movably connected to the fixed seat.

In another embodiment, the image stabilizer of the shooting device of the present invention further includes a plurality of elastic bodies, one end of the elastic bodies is connected to the mobile platform body, and the other end is connected to the fixed seat body, so that the fixed seat guide shaft and the The guide shafts of the mobile platforms are in close contact, and when the mobile platform slides relative to the fixed base, there is at least three points of point-to-point close contact between the guide shafts of the fixed base and the guide shafts of the mobile platforms.

In another embodiment, the image stabilizer of the shooting device of the present invention further includes a first driving element and a first magnetic element, the first driving element is disposed on the mobile platform body, and the first magnetic element is disposed on the fixed The position on the seat body relative to the first driving element.

In another embodiment, the image stabilizer of the shooting device of the present invention further includes a first driving element and a first magnetic element, the first driving element is disposed on the fixing base body, and the first magnetic element is disposed on the moving The position on the platform body relative to the first driving element.

In another embodiment, wherein the first driving element can generate a first magnetic field, the first magnetic field and the first magnetic element can attract or repel to drive the mobile platform relative to the fixed base Slide horizontally.

In another embodiment, wherein the first driving element is a driving coil, and the first magnetic element is a magnet.

In another embodiment, the image stabilizer of the shooting device of the present invention further includes a second driving element and a second magnetic element, the second driving element is disposed on the mobile platform body, and the second magnetic element is disposed on the fixed The position on the seat body relative to the second driving element.

In another embodiment, the image stabilizer of the shooting device of the present invention further includes a second driving element and a second magnetic element, the second driving element is disposed on the fixing base body, and the second magnetic element is disposed on the moving The position on the platform body relative to the second driving element.

In another embodiment, wherein the second driving element can generate a second magnetic field, the second magnetic field and the second magnetic element can attract or repel to drive the mobile platform relative to the fixed base Slide vertically.

In another embodiment, wherein the second driving element is a driving coil, and the second magnetic element is a magnet.

1‧‧‧ Image stabilizer

2‧‧‧Image sensor

3‧‧‧ Image stabilizer

10‧‧‧Dock

11‧‧‧Horizontal rail

20‧‧‧Fixed seat

20a‧‧‧horizontal reference magnet

20b‧‧‧Longitudinal reference magnet

21‧‧‧Body body

22‧‧‧Guide shaft of fixed seat

23‧‧‧Elastomer

30‧‧‧Mobile platform

31‧‧‧Horizontal sliding frame

32‧‧‧Longitudinal sliding frame

33‧‧‧Mobile platform body

36‧‧‧Mobile platform guide shaft

40a‧‧‧Horizontal drive coil

40b‧‧‧Longitudinal drive coil

60a‧‧‧First driving element

60b‧‧‧Second driving element

80a‧‧‧The first magnetic element

80b‧‧‧Second magnetic element

100a‧‧‧First Hall element

100b‧‧‧Second Hall element

313‧‧‧Longitudinal guide

Figure 1 is a schematic diagram of a conventional image stabilizer.

FIG. 2 is a schematic structural view of one embodiment of the image stabilizer of the shooting device of the present invention.

Figure 3 is a schematic diagram of the image stabilizer of Figure 2 when combined.

Please refer to Figures 2 and 3. Figures 2 and 3 show one embodiment of the image stabilizer of the shooting device of the present invention. An image stabilizer 3 can be set at a lens imaging position inside a shooting device, and the image stabilizer An image sensor (not shown) can be provided on 3, and the light emitted by a target can reach the image sensor through the lens. In this embodiment, the image stabilizer 3 of the present invention includes a fixed seat 20 and a mobile platform 30, the fixed base 20 includes four fixed base guide shafts 22 and a fixed base body 21, the mobile platform 30 includes two mobile platform guide shafts 36 and a mobile platform body 33, wherein the fixed base guide shafts 22 The guide shafts 36 of the mobile platforms are in contact with each other, and the mobile platform 30 is movably connected to the fixed base 20.

The image stabilizer 3 further includes three elastic bodies 23, one end of each of the elastic bodies 23 is connected to the mobile platform body 33, and the other end is respectively connected to the fixed base body 21, utilizing the restoring force of the elastic bodies 23 themselves , So that the mobile platform 30 can still be in close contact when sliding with respect to the fixed base 20. In this embodiment, the elastic bodies 23 are springs.

Among them, the four fixed base guide shafts 22 are disposed on the fixed base body 21, and the two mobile platform guide shafts 36 are disposed on the mobile platform body 33 in a vertical position relative to the four fixed base guide shafts 22, when the fixed base 20 and the mobile platform 30 When the three elastic bodies 23 are in close contact, the four fixed seat guide shaft 22 and the second mobile platform guide shaft 36 have at least three points of point-to-point contact. The mobile platform 30 utilizes the at least three points of point-to-point contact relative to The fixed base 20 slides. In this embodiment, the four fixed base guide shafts 22 and the two moving platform guide shafts 36 are metal guide shafts.

The image stabilizer 3 further includes a first magnetic element 80a, a second magnetic element 80b, a first driving element 60a, a second driving element 60b, a first Hall element 100a and a second Hall element 100b, The first magnetic element 80a and a second magnetic element 80b are disposed on the fixed base body 21, and the first driving element 60a, the second driving element 60b, the first Hall element 100a and the second Hall element 100b are disposed on the mobile platform body 33 relative to the position of the first magnetic element 80a and a second magnetic element 80b, when the camera senses the occurrence of shaking, the camera controls the first drive element 60a and the second drive element 60b to generate corresponding The magnetic field of the first magnetic element 80a and the second magnetic element 80b to attract or repel, and through the first Hall element 100a and the second Hall element 100b to detect the first magnetic element 80a and The movement of the second magnetic element 80b drives the mobile platform 30 to slide horizontally or longitudinally relative to the fixed base 20. In this embodiment, the first driving element 60a and the second driving element 60b are driving coils, and the first magnetic element 80a and a second magnetic element 80b are magnets.

Wherein, when the first driving element 60a generates a first magnetic field, it will attract or repel the first magnetic element 80a to drive the mobile platform 30 to slide laterally relative to the fixed base 20, and when the second driving The element 60b generates a second magnetic field which will attract or repel the second magnetic element 80b to drive the mobile platform 30 to slide longitudinally relative to the fixed base 20.

Although in this embodiment, the first magnetic element 80a and a second magnetic element 80b are disposed on the fixed base body 21, the first driving element 60a and the second driving element 60b are disposed on the mobile platform body 33 relative to the first magnetic The position of the element 80a and a second magnetic element 80b, however, it can be understood that in another embodiment, the first magnetic element 80a and a second magnetic element 80b may also be disposed on the mobile platform body 33 and the first driving element 60a And the second driving element 60b is disposed on the position of the fixing base body 21 relative to the first magnetic element 80a and a second magnetic element 80b. The rest of the arrangement is similar to the previous description.

The image stabilizer of the shooting device of the present invention directly contacts with each other through a plurality of metal guide shafts as a contact point when the mobile platform slides relative to the fixed base, reducing the guide rails and the base and the horizontal and vertical directions respectively. The frictional force generated during the axial sliding contact between the sliding frames, and through a plurality of elastic bodies, the mobile platform and the fixed seat are in close contact with each other, eliminating the action gap between the mobile platform and the fixed seat, so as to improve the image The purpose of the compensation sensitivity of the stabilizer, and since only a single mobile platform is used, the mechanism configuration of the image stabilizer is simplified, and its assembly time and cost can be saved at the same time.

Claims (10)

An image stabilizer of a shooting device includes: a fixed base, including at least two fixed base guide shafts and a fixed base body, the fixed base guide shafts are disposed on the fixed base body; and a mobile platform, including two mobile platforms A guide shaft and a mobile platform body, the mobile platform guide shafts are disposed on the mobile platform body; wherein, the fixed base guide shafts and the mobile platform guide shafts are in contact with each other, and the mobile platform is movably connected to the fixed seat. The image stabilizer of the shooting device as described in item 1 of the patent application scope further includes a plurality of elastic bodies, one end of which is connected to the body of the mobile platform, and the other end is connected to the body of the fixing base, so that the guide shafts of the fixing bases It is in close contact with the guide shafts of the mobile platforms, and when the mobile platform slides relative to the fixed seat, there is at least three point-to-point close contact between the guide shafts of the fixed seats and the guide shafts of the mobile platforms. The image stabilizer of the shooting device as described in item 1 of the patent application scope further includes a first driving element and a first magnetic element, the first driving element is disposed on the mobile platform body, and the first magnetic element is disposed on The position of the fixing seat body relative to the first driving element. The image stabilizer of the shooting device as described in item 1 of the patent application scope further includes a first driving element and a first magnetic element, the first driving element is disposed on the fixing base body, and the first magnetic element is disposed on The position of the mobile platform body relative to the first driving element. The image stabilizer of a shooting device as described in item 3 or 4 of the patent application scope, wherein the first driving element can generate a first magnetic field, and the first magnetic field can attract or repel the first magnetic element To drive the mobile platform to slide laterally relative to the fixed base. The image stabilizer of a shooting device as described in item 3 or 4 of the patent application, wherein the first driving element is a driving coil, and the first magnetic element is a magnet. The image stabilizer of the shooting device as described in item 1 of the patent application scope further includes a second driving element and a second magnetic element, the second driving element is disposed on the mobile platform body, and the second magnetic element is disposed on The position of the fixing seat body relative to the second driving element. The image stabilizer of a shooting device as described in item 1 of the patent application scope further includes a second driving element and a second magnetic element, the second driving element is disposed on the fixing base body, and the second magnetic element is disposed on The position of the mobile platform body relative to the second driving element. The image stabilizer of a shooting device as described in item 7 or 8 of the patent application scope, wherein the second driving element can generate a second magnetic field, and the second magnetic field can attract or repel the second magnetic element To drive the mobile platform to slide longitudinally relative to the fixed base. The image stabilizer of a shooting device as described in item 7 or 8 of the patent application, wherein the second driving element is a driving coil, and the second magnetic element is a magnet.