CN116885918A

CN116885918A - Periscopic zoom lens, automatic zoom assembly thereof and track type motor thereof

Info

Publication number: CN116885918A
Application number: CN202310893231.9A
Authority: CN
Inventors: 林俊杰; 张宗凯
Original assignee: Luxvisions Innovation Ltd
Current assignee: Luxvisions Innovation Ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2023-10-13

Abstract

A track motor comprises a plurality of guide rails, a bearing seat, a plurality of magnet sets, a driving assembly and an induction assembly. The plurality of guide rails have guide shafts. The bearing seat is supported on the plurality of guide rails and provided with a plurality of side plates. The plurality of magnet groups are respectively positioned on the plurality of side plates and are respectively magnetically attracted with the guide rails corresponding to the magnet groups. The driving assembly is used for generating magnetic fields, and the magnetic fields respectively drive the magnet sets to enable the bearing seat to move along the guide shaft. The sensing component corresponds to one of the magnet sets and is used for sensing the position of the magnet set relative to the corresponding guide rail.

Description

Periscopic zoom lens, automatic zoom assembly thereof and track type motor thereof

Technical Field

The present invention relates to a motor with a track and an automatic zooming assembly, and more particularly to a track motor with a magnetic driving zooming function.

Background

In photographing, focal length adjustment is an important function, and in general, an optical image capturing device performs zooming by changing a position of a lens, so that objects having different distances from the optical image capturing device can be clearly imaged on the optical image capturing device. However, electronic devices with photographing function often have insufficient space to mount a telephoto lens or a variable-focus optical image capturing device due to the thickness of the device, and can only achieve focal length adjustment by digital zooming with poor image quality.

Disclosure of Invention

In view of the above, the present invention provides an auto-zoom assembly, a track motor thereof, and a periscopic zoom lens comprising the auto-zoom assembly for zooming in an electronic device with thickness limitation to preserve the image quality of the object at far focus after image capture.

According to one embodiment, the track motor includes a plurality of guide rails, a carrier, a plurality of magnet sets, a driving assembly, and an induction assembly. The plurality of guide rails have guide shafts. The bearing seat is supported on the guide rail and provided with a plurality of side plates. The plurality of magnet groups are respectively positioned on the side plates and are respectively magnetically attracted with the corresponding guide rails. The driving assembly is used for generating magnetic fields, and the magnetic fields respectively drive the magnet sets to enable the bearing seat to move along the guide shaft. The induction component corresponds to the magnet group and is used for sensing the position of the magnet group relative to the corresponding guide rail.

In an embodiment, the track motor further includes a magnetic conducting disc, the magnetic conducting disc is fixed on the bearing seat, the magnetic conducting disc includes a guiding portion and a plurality of magnetic attraction portions, the guiding portion is located between the magnetic attraction portions and connected with the magnetic attraction portions respectively, and the magnetic attraction portions are adjacent to the magnet sets respectively.

In an embodiment, the side plate of the bearing seat is provided with a plurality of windows, the windows respectively correspond to the magnetic attraction parts, and the magnet sets are respectively contacted with the magnetic attraction parts at the windows.

In one embodiment, the track motor includes two guide rails and two magnet sets, the two magnet sets are a first magnet set and a second magnet set, the first magnet set and the second magnet set include a first magnet and a second magnet, the first magnet and the second magnet have an N pole and an S pole, respectively, the N pole of the first magnet is magnetically attracted to the S pole of the second magnet, and the S pole of the first magnet is magnetically attracted to the N pole of the second magnet.

In an embodiment, the magnetic attraction portion includes a first magnetic attraction portion and a second magnetic attraction portion, and the first magnetic attraction portion and the second magnetic attraction portion respectively correspond to the first magnet or the second magnet.

In one embodiment, the guide portion of the guide disc has a plurality of guide holes, the openings of which are directed toward the guide rail.

In one embodiment, the magnetic isolation assembly is further included and is located between the sensing assembly and the corresponding magnet set.

In one embodiment, the sensing assembly includes a magnetic grid and a sensor that senses the position of the corresponding set of magnets on the corresponding guide rail.

In an embodiment, the bearing seat is provided with a plurality of channels, the channels correspond to the guide rails, and the guide rails are respectively positioned at the channels so as to enable the bearing seat to move on the guide rails.

The invention further provides an automatic zooming assembly, which comprises a lens group and a track type motor. The lens group has a lens optical axis. The track motor comprises a plurality of tracks, a bearing seat, a plurality of magnet groups, a driving assembly and an induction assembly. The plurality of guide rails have guide shafts which are substantially parallel to the optical axis of the lens. The bearing seat is supported by the guide rail and fixes the lens group, and is provided with a plurality of side plates. The plurality of magnet groups are respectively positioned on the side plates and are respectively magnetically attracted with the corresponding guide rails. The driving assembly is used for generating magnetic fields, and the magnetic fields respectively drive the magnet sets to enable the bearing seat to move along the guide shaft. The induction component corresponds to the magnet group and is used for sensing the position of the magnet group relative to the corresponding guide rail.

In an embodiment, the lens assembly further comprises a lens barrel, wherein an outer surface of the lens barrel is attached to the receiving surface of the bearing seat, and an inner surface of the lens barrel is substantially fixed with the lens assembly.

In an embodiment, the track motor further comprises two guide rails, two magnet sets, a magnetic conduction disc and two magnetism isolating components, the two magnet sets are a first magnet set and a second magnet set respectively, the first magnet set and the second magnet set respectively comprise a first magnet and a second magnet, the first magnet and the second magnet respectively have an N pole and an S pole, the N pole of the first magnet and the S pole of the second magnet are magnetically attracted, the S pole of the first magnet and the N pole of the second magnet are magnetically attracted, the magnetic conduction disc is fixed on the bearing seat and is provided with a guide part and a plurality of magnetism isolating parts, the magnetism isolating parts comprise a first magnetism isolating part and a second magnetism isolating part, the guide part is positioned between the first magnetism isolating part and the second magnetism isolating part and is connected with the first magnetism isolating part and the second magnetism isolating part respectively, the side plate of the bearing seat is provided with a first window and a second window, the first magnet set and the second magnet set respectively correspond to the first magnetism isolating part and the second magnetism isolating part, the magnetic disc is fixed on the bearing seat, the guide part is provided with a guide part and a plurality of magnetism isolating parts, the guide part is positioned between the first magnetism isolating part and the second magnetism isolating part, the guide part is respectively corresponding to the first magnetism isolating part and the second magnetism isolating part, the first magnetism isolating part is respectively corresponding to the first magnetism isolating part and the second magnetism isolating part, the first magnet set and the second magnet.

The invention also provides a periscope type zoom lens, which comprises an optical steering assembly, an automatic zooming assembly and an image sensor. The optical steering assembly is provided with an incidence surface, a reflection surface and an emergent surface, and imaging light rays are incident from the incidence surface and are emitted from the emergent surface after being reflected by the reflection surface. The auto-zoom assembly is adjacent to the exit face, and the auto-zoom assembly comprises a lens group and a track motor. The lens group is provided with a lens optical axis which is substantially aligned with the emergent surface. The track motor comprises a plurality of guide rails, a bearing seat, a plurality of magnet groups, a driving assembly and an induction assembly. The plurality of guide rails have guide shafts which are substantially parallel to the optical axis of the lens. The bearing seat is supported by the guide rail and fixes the lens group, and is provided with a bearing surface and a plurality of side plates. The plurality of magnet groups are respectively positioned on the side plates and are respectively magnetically attracted with the corresponding guide rails. The driving assembly is used for generating magnetic fields which respectively drive the magnet sets to enable the bearing seat to move along the guide shaft. The sensing component corresponds to one of the magnet sets and is used for sensing the position of the magnet set relative to the corresponding guide rail. The image sensor is adjacent to the automatic zooming component, the sensing optical axis of the image sensor is substantially aligned with the center of the emergent surface and the optical axis of the lens, and the image sensor captures imaging light rays through the automatic zooming component.

In an embodiment, the optical steering device further comprises a hand shake prevention module, wherein the hand shake prevention module is connected with the optical steering assembly and is used for driving the optical steering assembly to correspondingly move so as to counteract hand shake.

Drawings

FIG. 1 is a schematic perspective view of an auto-focus assembly according to one embodiment.

Fig. 2 is a schematic perspective view of a track motor according to an embodiment.

FIG. 3 is an exploded perspective view of the auto-focus assembly of the embodiment of FIG. 2.

FIG. 4A is a perspective view of the orbital motor of the embodiment of FIG. 2, showing the orbital motor without a magnetic guide disk.

Fig. 4B is a magnetic field profile of the embodiment of fig. 4A.

Fig. 5A is a schematic perspective view of a track motor including an embodiment of a magnetic guide disk.

Fig. 5B is a magnetic field profile of the embodiment of fig. 5A.

Fig. 6A is a schematic perspective view of a track motor of an embodiment in which the magnetic guide disk is a radical design.

Fig. 6B is a magnetic field profile of the embodiment of fig. 6A.

FIG. 7A is a schematic perspective view of a track motor with guide holes in an embodiment in which the guide plate is a radical design.

Fig. 7B is a magnetic field profile of the embodiment of fig. 7A.

Fig. 8 is a schematic view of the attractive direction of magnetic lines on a magnetic disk with guide holes designed by the components.

FIG. 9 is a schematic diagram of a periscopic zoom lens according to an embodiment.

Wherein, the reference numerals:

10 automatic zoom assembly

12 lens group

120 lens barrel

122 outer surface

124 inner surface

14 track motor

140 guide rail

142 first guide rail

144 second guide rail

160 bearing seat

162 side plate

164 channel

166 window

168 bearing surface

180 magnet set

182 first magnet set

184 second magnet set

186 first magnet

188 second magnet

200 drive assembly

220 sensing assembly

222 magnetic grid

224 sensor

240 magnetic conduction disk

242 guide part

244 guide hole

246 magnetic attraction part

248 first magnetic attraction part

250 a second magnetic attraction part

260 magnetic isolation assembly

30 optical steering assembly

32 incidence plane

34 reflecting surface

36 exit face

50 image sensing

70 hand shock prevention module

At guide shaft

LGT imaging light

OA1 optical axis of lens

OA2 sensing optical axis

PN1, PN2: N pole

PS1, PS 2S pole

Detailed Description

Referring to fig. 1, fig. 1 is a perspective view of an auto-zoom assembly according to an embodiment. The auto-focus assembly 10 includes a lens group 12 and a track motor 14. The lens assembly 12 has a lens optical axis OA1, and the track motor 14 includes a plurality of guide rails 140, a carrier 160, a plurality of magnet assemblies 180, a driving assembly 200 and a sensing assembly 220. The plurality of guide rails 140 have a guide axis At which is substantially parallel to the lens optical axis OA1. The bearing seat 160 is supported on the guide rails 140 and fixes the lens assembly 12. The carrier 160 has a plurality of side plates 162, and a plurality of magnet sets 180 are respectively located on the side plates 162, and each magnet set 180 corresponds to each guide rail 140 and is magnetically attracted to the corresponding guide rail 140. The driving assembly 200 is used for generating a magnetic field, the magnetic field drives the magnet assembly 180 to move, and the carrier 160 is linked by the magnet assembly 180 to move along the guiding axis At. The sensing component 220 corresponds to one of the plurality of magnet sets 180 and is used for sensing the position of the magnet set 180 relative to the corresponding guide rail 140.

In some embodiments, the lens assembly 12 includes a plurality of optical lenses, each having a respective optical axis, and the optical axes of the lenses are substantially aligned to form a lens optical axis OA1 of the lens assembly 12. Referring to fig. 2 and 3, fig. 2 is a schematic perspective view of a track motor according to an embodiment, and fig. 3 is an exploded perspective view of an auto-zoom assembly according to the embodiment of fig. 2. The guide rails 140 may be 2, for example, include a first guide rail 142 and a second guide rail 144, where the first guide rail 142 and the second guide rail 144 are located on the same plane and parallel to each other, and have magnetic permeability, and may attract a magnetic field and generate a magnetic force. The guide axis At is a moving direction formed by the plurality of guide rails 140, the direction of the long axis of the guide rail 140 is parallel to the guide axis At and the lens optical axis OA1, and the guide axis At represents the moving track of the object on the guide rail 140, that is, when the bearing seat 160 is supported on the guide rail 140, the object moves along the direction of the guide axis At by means of the guide rail 140. The distance the carriage 160 can move is related to the length of the long axis of the rail 140. On the other hand, the plurality of guide rails 140 may be configured to allow the carrier 160 to move along the guide axis At more stably, while preventing any unnecessary shaking.

In some embodiments, the carrier 160 has a plurality of channels 164, the number of channels 164 corresponding to the number of rails 140, for example, 2 channels 164 corresponding to the first rail 142 and the second rail 144, respectively. The channel 164 has a shape and a width that matches the shape and width of the rail 140, and when the carrier 160 is positioned on the rail 140, the rail 140 may be snapped into the channel 164 with the surface of the channel 164 in contact with the surface of the rail 140. The channel 164 allows the carriage 160 to be securely positioned on the rail 140 and to maintain a desired position and orientation on the rail 140 to allow the carriage 160 to move on the rail 140.

In an embodiment, the number of the side plates 162 of the carrier 160 may be two, and the two side plates 162 are respectively located at two sides of the carrier 160. The plurality of magnet sets 180 may be 2 sets corresponding to the rail 140, for example, having a first magnet set 182 corresponding to the first rail 142 and a second magnet set 184 corresponding to the second rail 144. The two side plates 162 are opposite to each other, and the first magnet group 182 and the second magnet group 184 are located at the two side plates 162, respectively.

Since the guide rail 140 has magnetic permeability and the magnet set 180 has a magnetic field, a magnetic attraction is generated between the magnet set 180 and the guide rail 140, and thus, the carrier 160 with the magnet set 180 may be fixed on the guide rail 140 downward by the magnetic attraction. The manner of fixing the carrier 160 and the guide rail 140 together by magnetic attraction can enable the contact between the carrier 160 and the guide rail 140 to be maintained stable due to the magnetic attraction between the magnet assembly 180 and the guide rail 140 even if the placement manner of the automatic zoom assembly 10 is changed, such as rotating, tilting or turning the automatic zoom assembly 10, when the user uses the automatic zoom assembly 10, so that the automatic zoom assembly 10 can be operated normally in various application scenarios, and the stability of the automatic zoom assembly 10 is ensured.

In one embodiment, the driving element 200 is adjacent to each of the magnet sets 180, and when a current is applied to the driving element 200, the driving element 200 generates a magnetic field, and the distance between the driving element 200 and the magnet set 180 is within a range where the magnetic field generated by the driving element 200 and the magnetic field generated by the magnet set 180 can interact, and the interaction between the magnetic fields causes a magnetic force, which causes the magnet set 180 to move under a pushing force or an attractive force.

As previously described, the magnet set 180 may include a first magnet set 182 and a second magnet set 184, and in some embodiments, the first magnet set 182 and the second magnet set 184 may include a first magnet 186 and a second magnet 188, respectively, the first magnet 186 and the second magnet 188 being adjacent to each other and having N poles PN1, PN2 and S poles PS1, PS2, respectively. Wherein, the N pole PN1 of the first magnet 186 is magnetically attracted to the S pole PS2 of the second magnet 188, and the S pole PS1 of the first magnet 186 is magnetically attracted to the N pole PN2 of the second magnet 188. The magnetic field direction generated by the driving assembly 200 when energized is opposite to or attracted to the magnetic poles of the first magnet 186 or the second magnet 188, so that the magnet set 180 is pushed or attracted to move the carrier 160 along the guide axis At on the guide rail 140.

By controlling the magnitude of the current applied to the driving assembly 200, the intensity of the magnetic field generated by the driving assembly 200 can be adjusted, thereby affecting the magnitude of the magnetic force, and thus controlling the movement of the magnet assembly 180 and the carrier 160 on the guide rail 140. The driving assembly 200 may be a coil that generates a magnetic field around the coil by controlling the flow of current to the coil.

In an embodiment, the sensing element 220 may correspond to any one of the magnet sets 180, for example, when the magnet set 180 includes the first magnet set 182 and the second magnet set 184, the sensing element 220 is located below the first magnet set 182, and due to the structure between the magnet set 180 and the carrier 160, the magnetic field generated by the driving element 200 moves the first magnet set 182 and the second magnet set 184, and the positions of the first magnet set 182 and the second magnet set 184 on the guide rail 140 are the same, so that the position of the carrier 160 on the guide rail 140 can be obtained by sensing the position of one of the magnet sets 180 by only one set of the sensing element 220.

In one embodiment, the sensing element 220 includes a magnetic grid 222 and a sensor 224, wherein the magnetic grid 222 has a plurality of magnetic poles including a south pole and a north pole, and the plurality of south poles and the plurality of north poles are alternately arranged to form the structure of the magnetic grid 222. The function of the magnetic grid 222 is to create a specific magnetic field distribution, and as the magnet assembly 180 moves, the magnetic field of the magnet assembly 180 interacts with the magnetic field of the magnetic grid 222 to create a change in the magnetic field. The sensor 224 detects and receives the varying signal of the magnetic field to obtain the position of the magnet assembly 180 on the guide rail 140. When the automatic zoom assembly 10 is actuated, the driving assembly 200 and the magnet assembly 180 control the carrier 160 with the fixed lens assembly 12 to move, and the position of the magnet assembly 180 can be obtained through the magnetic grid 222 and the sensor 224, so as to achieve more precise zoom control.

In one embodiment, track motor 14 further includes a magnetism isolating assembly 260, magnetism isolating assembly 260 being positioned between magnet assembly 180 and induction assembly 220. When a strong magnetic field is present near the magnetic grid 222, the magnetic field interacts with the magnetic field in the magnetic grid 222. Such interactions may cause the magnetic poles in the magnetic grid 222 to rearrange or the direction of magnetization to change, thereby causing the magnetic grid 222 to lose its original magnetic properties. The magnetism isolating component 260 can guide magnetic force lines generated by the magnet set 180 to reduce the influence of the magnetic field on the magnetic grid 222, so that the magnetic grid 222 maintains the original magnetism.

Referring to fig. 4A and 5A, fig. 4A is a perspective view of the track motor of the embodiment of fig. 2, showing that the track motor does not include a magnetically permeable disc, and fig. 5A is a schematic perspective view of the track motor of the embodiment including a magnetically permeable disc. In one embodiment, the track motor 14 includes a magnetic conductive disc 240, where the magnetic conductive disc 240 is fixed on the carrier 160, and the magnetic conductive disc 240 has a guiding portion 242 and a plurality of magnetic attraction portions 246, and the guiding portion 242 is located between the plurality of magnetic attraction portions 246 and connected to the magnetic attraction portions 246 respectively. The magnetic attraction portions 246 are adjacent to the magnet sets 180, respectively, and the number of the magnetic attraction portions 246 is the same as the number of the magnet sets 180, and for example, includes a first magnetic attraction portion 248 adjacent to the first magnet set 182 and a second magnetic attraction portion 250 adjacent to the second magnet set 184. The magnetic conducting disc 240 is made of a magnetic conducting material, and the distance between the magnet set 180 and the guide rail 140 may cause insufficient magnetic attraction strength between the magnet set 180 and the guide rail 140, so that the carrier 160 cannot be stably fixed on the guide rail 140, and the magnetic conducting disc 240 can guide magnetism on the magnet set 180 to the guide rail 140, that is, magnetic lines of force will be attracted from the magnet set 180 along the direction of the magnetic conducting disc 240 toward the guide rail 140, so as to increase the magnetic attraction between the magnet set 180 and the guide rail 140.

The magnetic guiding disc 240 may be disposed in the bearing seat 160 in a manner of embedding and injecting, and each side plate 162 of the bearing seat 160 is provided with a window 166, the windows 166 respectively correspond to the magnetic attraction portions 246, and the positions and the sizes of the windows 166 enable the magnetic attraction portions 246 of the magnetic guiding disc 240 to be exposed so that the magnet sets 180 located on the side plates 162 are respectively in direct contact with the magnetic attraction portions 246 at the windows 166, thereby reducing the adjacent distance between the magnet sets 180 and the magnetic attraction portions 246 and achieving a better magnetic force line guiding effect.

If the magnetic attraction portion 246 of the magnetic conduction disc 240 has a certain distance from the magnet set 180, but is not in direct contact with the magnet set 180, the distance does not exceed the magnetic field range of the magnet set 180, so that the effect that the magnetic attraction portion 246 cannot generate magnetic force lines is avoided. The magnetic field range of the magnet assembly 180 is determined according to the shape and size of the magnet assembly 180.

Referring to fig. 6A, fig. 6A is a schematic perspective view of a track motor of an embodiment in which a magnetic guide disk is designed as a component. In one embodiment, when the magnetic attraction portion 246 is adjacent to the magnet set 180, the first magnetic attraction portion 248 and the second magnetic attraction portion 250 may respectively correspond to the first magnet 186 or the second magnet 188 to form a radical design. When the magnetic attraction portion 246 corresponds to the N pole PN1 of the first magnet 186 and the S pole PS2 of the second magnet 188 (hereinafter referred to as a centering design), the magnetic forces guided onto the guide rail 140 from the magnet assembly 180 may cancel each other out, thereby resulting in a decrease in the magnetic attraction force on the guide rail 140. Therefore, the component design can further achieve the effect of guiding magnetic force lines to the guide rail 140 and enhancing the magnetic field compared to the magnetic attraction portion 246 which is adjacent to or contacts the first magnet 186 and the second magnet 188 at the same time.

Referring to fig. 7A, fig. 7A is a schematic perspective view of a track motor of an embodiment in which a guide disk is designed for a radical and has a guide hole. In one embodiment, the guide portion 242 of the guide disk 240 has guide holes 244, with the openings of the guide holes 244 facing each guide rail 140. The guide hole 244 is formed to prevent the magnetic force lines from reaching the upper side of the guide rail 140 and being still guided by the magnetic disc 240 to be far away from the guide rail 140. In detail, when the magnetic force lines extend from the magnet assembly 180 to the guide portion 242 along the magnetic attraction portion 246, the magnetic force lines can more directly enter the guide rail 140 (as shown in fig. 8) due to the opening of the guide hole 244, so that the magnetic force lines are less likely to be further away from the guide rail 140 along the guide portion 242, and the magnetic attraction force of the magnet assembly 180 to the guide rail 140 is further increased, and the effect of fixing the carrier 160 on the guide rail 140 is improved.

In addition to the guide hole 244 being opened to allow magnetic force lines to pass through and enter the guide rail 140, the guide portions 242 of the magnetic disc 240 may be disconnected, and at this time, one end of the guide portion 242 is connected to the magnetic attraction portion 246, and the other end is located above the corresponding guide rail 140, so as to achieve the effect of increasing the magnetic attraction force of the magnet assembly 180 to the guide rail 140.

Referring to fig. 4B, 5B, 6B, and 7B, the magnetic field profiles of the embodiments of fig. 4A, 5A, 6A, and 7A, respectively, are shown. When magnetic disk 240 is present and magnetic attraction 246 is centrally designed, the magnetic field strength measured on rail 140 is reduced relative to when magnetic disk 240 is absent, and when magnetic disk 240 is a radical design or a radical and has guide hole 244, the magnetic field strength measured on rail 140 is increased.

The magnetic field strength at the position of the guide rail 140 corresponding to the magnet set 180 is 0.3 tesla when the guide rail 140 is centrally designed, but the magnetic field strength at the two ends of the guide rail 140 is only about 0.000009 tesla (9 microtesla), whereas the range of the magnetic field coverage on the guide rail 140 is increased and the magnetic field strength at the two ends of the guide rail 140 can be increased to 0.06 tesla when the guide rail 140 is designed by the component, and the magnetic field strength at the two ends of the guide rail 140 can be more about 0.15 tesla when the guide hole 244 is formed by the component.

The stronger the magnetic field strength measured on the guide rail 140, the stronger the attractive force between the magnet set 180 and the guide rail 140, the more firmly the bearing seat 160 can be fixed on the guide rail 140, and the problem that the bearing seat 160 is separated from the guide rail 140 due to the influence of the automatic zoom assembly 10 when changing the placement direction is avoided. Table 1 below shows the magnetic attraction force measured on the guide rail 140 for the magnetic disk 240 in different designs, and shows that the magnetic attraction force on the guide rail 140 increases by 69% with the magnetic disk 240 and the magnetic disk 240 is a radical design, and 115% with the design with the guide hole 244, compared to the design without the magnetic disk 240.

Table 1:

magnetic conductive disk	Magnetic attraction force (mN)	Percentage increase in magnetic attraction
			Magnetic conduction-free disc	79.1	-
Centering design	26.4	-67％
			Radical design	133.7	69％
Radical design and having guide hole	170	115％

Referring back to fig. 1. In one embodiment, the auto-zoom assembly 10 further comprises a lens barrel 120. The bearing seat 160 has a bearing surface 168, and the outer surface 122 of the lens barrel 120 contacts the bearing surface 168 and is fixed on the bearing surface 168. The inner surface 124 of the barrel holds the lens assembly 12. The lens barrel 120 can increase the stability between the lenses in the lens group 12, so that the lens optical axis OA1 is always kept parallel to the guide axis At.

Referring to fig. 9, fig. 9 is a schematic diagram of a periscopic zoom lens according to an embodiment. The periscopic zoom lens comprises an optical steering assembly 30, an auto zoom assembly 10 and an image sensor 50. The optical steering assembly 30 has an incident surface 32, a reflecting surface 34 and an emergent surface 36, and when the periscope type zoom lens is in operation, the imaging light LGT of the photographed object is incident from the incident surface 32 and is reflected by the reflecting surface 34 and then is emitted from the emergent surface 36.

Auto-focus assembly 10 is adjacent to exit face 36, auto-focus assembly 10 comprising lens group 12 and orbital motor 14. The lens assembly 12 has a lens optical axis OA1, and the lens optical axis OA1 is aligned with the center of the exit surface 36. As previously described, the track motor 14 includes the guide rail 140, the carrier 160, the magnet assembly 180, the drive assembly 200, and the induction assembly 220. The guide rail 140 of the track motor 14 has a guide axis At which is parallel to the lens optical axis OA1.

The lens assembly 12 is fixed to the carrier 160, and when the track motor 14 is activated, the lens assembly 12 is moved on the optical axis OA1 (i.e. the guide axis At) to change the focal length of the periscopic zoom lens.

The image sensor 50 is adjacent to the auto-zoom assembly 10, the image sensor 50 has a sensing optical axis OA2, the sensing optical axis OA2 is substantially aligned with the center of the lens optical axis OA1 and the exit surface 36, and the sensing optical axis OA2 approaches to a straight line with the lens optical axis OA1. The image sensor 50 receives the imaging light LGT passing through the lens assembly 12 and captures the imaging light LGT.

In one embodiment, the optical steering assembly 30 may be implemented as a right triangle prism, and the reflecting surface 34 may be implemented as a plane mirror, a beam splitter, or the like.

In one embodiment, the image sensor 50 may be a CMOS (Complementary Metal-Oxide-Semiconductor), CCD (Charge-Coupled Device), BSI (Back Side Illuminated) or the like, which converts photons into electronic signals.

In one embodiment, the periscope type zoom lens further comprises a hand shake prevention module 70, wherein the hand shake prevention module 70 is connected with the optical steering assembly 30 and can drive the optical steering assembly 30 to move corresponding to the shake generated by the user to offset the shake.

In one embodiment, components such as lenses, filters, diaphragms, etc. can be added to make the periscopic zoom lens have better imaging effect.

In one embodiment, the periscopic zoom lens can be used in electronic devices, such as mobile phones, tablet computers, and the like. The optical steering assembly 30 can provide a periscopic zoom lens with a relatively thick lens assembly, yet still have a relatively small thickness, such that the lens is not limited by the thickness of the electronic device when integrated into the electronic device. At the same time, the auto-zoom assembly 10 may have more room for focal length adjustment of the lens.

In summary, the magnetic driving of the track motor achieves the effect of automatic zooming of the periscopic zoom lens, so that the periscopic zoom lens has the functions of far-focus photography and focal length adjustment under the thickness allowed by the design of the electronic device, and can keep better image quality when shooting objects at the far focus.

Claims

1. A track motor comprising:

a plurality of guide rails having guide shafts;

the bearing seat is supported on the guide rail and provided with a plurality of side plates;

the magnet groups are respectively positioned on the side plates and are respectively magnetically attracted with one of the corresponding guide rails;

the driving assembly is used for generating magnetic fields which respectively drive the magnet groups so as to enable the bearing seat to move along the guide shaft; a kind of electronic device with high-pressure air-conditioning system

The sensing assembly corresponds to one of the magnet sets and is used for sensing the position of the magnet set relative to the corresponding guide rail.

2. The track motor of claim 1 further comprising a magnetically conductive disk secured to the carrier and having a guide portion and a plurality of magnetically attractable portions, the guide portion being positioned between and respectively connected to the magnetically attractable portions, the magnetically attractable portions being respectively adjacent to the magnet assembly.

3. The track motor of claim 2, wherein the side plate of the carrier has a plurality of windows, the windows respectively correspond to the magnetic attraction portions, and the magnet sets respectively contact with the magnetic attraction portions at the windows.

4. The orbital motor of claim 2, comprising two of the guide rails and two of the magnet sets, the two magnet sets being a first magnet set and a second magnet set, respectively, the first magnet set and the second magnet set comprising a first magnet and a second magnet, respectively, the first magnet and the second magnet having an N-pole and an S-pole, respectively, the N-pole of the first magnet magnetically attracting the S-pole of the second magnet, the S-pole of the first magnet magnetically attracting the N-pole of the second magnet.

5. The track motor of claim 4, wherein the magnetic attraction portion comprises a first magnetic attraction portion and a second magnetic attraction portion, the first magnetic attraction portion and the second magnetic attraction portion corresponding to the first magnet or the second magnet, respectively.

6. The track motor of claim 5 wherein the guide portion of the magnetically permeable disc has a plurality of guide holes with openings facing the guide rail.

7. The orbital motor of claim 1, further comprising a magnetic isolation assembly positioned between the induction assembly and the corresponding set of magnets.

8. The orbital motor of claim 1, wherein the sensing assembly comprises a magnetic grid and a sensor that senses the position of the corresponding set of magnets on the corresponding guide rail.

9. The track motor of claim 1 wherein the carriage has a plurality of channels corresponding to the rails and the rails are located at the channels, respectively, to move the carriage over the rails.

10. An automatic zoom assembly, comprising:

a lens group having a lens optical axis; a kind of electronic device with high-pressure air-conditioning system

A track motor comprising:

a plurality of guide rails having a guide axis, the guide axis being substantially parallel to the lens optical axis;

the bearing seat is supported by the guide rail and used for fixing the lens group, and is provided with a plurality of side plates;

11. The automatic zoom assembly of claim 10, further comprising a barrel having an outer surface that engages the receiving surface of the carrier, the inner surface of the barrel substantially securing the lens group.

12. The automatic zoom assembly of claim 10, wherein the track motor further comprises two guide rails, two magnet sets, a magnetic disc and two magnetism isolating assemblies, the two magnet sets are respectively a first magnet set and a second magnet set, the first magnet set and the second magnet set respectively comprise a first magnet and a second magnet, the first magnet and the second magnet respectively have an N pole and an S pole, the N pole of the first magnet magnetically attracts the S pole of the second magnet, the S pole of the first magnet magnetically attracts the N pole of the second magnet, the magnetic disc is fixed on the carrier, the magnetic disc is provided with a guide portion and a plurality of magnetic attraction portions, the magnetic attraction portions comprise a first magnetic attraction portion and a second magnetic attraction portion, the guide portion is positioned between the first magnetic attraction portion and the second magnetic attraction portion and is respectively connected with the first magnetic attraction portion and the second magnetic attraction portion, the side plate of the bearing seat is provided with a first window and a second window, the first window and the second window respectively correspond to the first magnetic attraction part and the second magnetic attraction part, the first magnet group and the second magnet group are respectively contacted with the first magnetic attraction part and the second magnetic attraction part at the first window and the second window, the first magnetic attraction part and the second magnetic attraction part are respectively adjacent to or correspond to the first magnet or the second magnet, the guide part of the magnetic conduction disc is provided with a plurality of guide holes, the openings of the guide holes face the guide rail, the magnetism isolating component is positioned between the first magnet group or the second magnet group and the induction component, the induction component comprises a magnetic grid and a sensor, the sensor senses the position of the corresponding first magnet group or second magnet group on the corresponding guide rail, the bearing seat is provided with two channels, the channels respectively correspond to the guide rail, and the guide rails are respectively positioned at the channels so that the bearing seat moves on the guide rail.

13. A periscopic zoom lens comprising:

the optical steering assembly is provided with an incidence surface, a reflection surface and an emergent surface, and imaging light rays are incident from the incidence surface and are emitted from the emergent surface after being reflected by the reflection surface;

an auto-zoom assembly adjacent to the exit face, the auto-zoom assembly comprising:

a lens group having a lens optical axis, the lens optical axis being substantially aligned with the exit face; a kind of electronic device with high-pressure air-conditioning system

A track motor comprising:

the bearing seat is supported by the guide rail and used for fixing the lens group, and is provided with a bearing surface and a plurality of side plates;

The sensing component corresponds to one of the magnet groups and is used for sensing the position of the magnet group relative to the corresponding guide rail; a kind of electronic device with high-pressure air-conditioning system

The sensing optical axis of the image sensor is substantially aligned with the center of the emergent surface and the optical axis of the lens, and the image sensor captures the imaging light through the automatic zooming component.

14. The periscope type zoom lens of claim 13, further comprising a hand shake prevention module connected to the optical steering assembly, the hand shake prevention module configured to drive the optical steering assembly to move correspondingly to counteract hand shake.

15. The periscopic zoom lens of claim 13 wherein the orbital motor further comprises two of the guide rails, two of the magnet sets, a magnetically permeable disc and two magnetically isolated members, the two magnet sets being a first magnet set and a second magnet set respectively, the first magnet set and the second magnet set comprising a first magnet and a second magnet respectively, the first magnet and the second magnet having N and S poles respectively, the N pole of the first magnet magnetically attracting the S pole of the second magnet, the magnetically permeable disc being secured to the carrier, the magnetically permeable disc having a guide portion and a plurality of magnetically attractive portions, the magnetically attractive portions comprising a first magnetically attractive portion and a second magnetically attractive portion, the guide portion being located between and in communication with the first magnetically attractive portion and the second magnetically attractive portion respectively, the first magnet and the second magnet having N poles magnetically attractive to the second magnet, the N poles of the first magnet and the S poles of the second magnet having N poles magnetically attractive to the second magnet, the magnetically attractive portion being located between and the first magnetically attractive portion and the second magnetically attractive portion, the guide portion and the second magnetically attractive portion being located between or the guide portion and the second magnetically attractive portion and the first magnetically attractive portion and the second magnetically attractive portion being located between the first and the first magnetically attractive portion and the second window or the second magnetically attractive portion and the second magnetically attractive portion being located between the guide portion and the first magnetically attractive portion and the second magnetic portion and the second magnetically attractive portion, the second magnetic portion being in contact with the first and the second magnetic portion and the second magnetically attractive portion, or the second magnetic portion being located between the guide portion and the second magnet and the second magnetic portion and the magnetically attractive portion, respectively, and the second magnetic portion being a magnetic member and the second magnetic member and the magnetic member, the sensor senses the position of the corresponding first magnet group or second magnet group on the corresponding guide rail, the bearing seat is provided with two channels, the channels respectively correspond to the guide rail, and the guide rails are respectively positioned at the channels so that the bearing seat moves on the guide rail.