CN113296227A

CN113296227A - Zoom lens and photographing apparatus

Info

Publication number: CN113296227A
Application number: CN202110650413.4A
Authority: CN
Inventors: 赵媚娇; 孔旭东; 郑旭东; 李昆; 吴恙; 李颖
Original assignee: Union Optech Co Ltd
Current assignee: Union Optech Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-24

Abstract

The invention discloses a zoom lens and photographic equipment, wherein the zoom lens comprises a lens barrel, a movable carrier and a detection assembly, the lens barrel comprises at least two barrel bodies which are detachably connected along the length direction of the lens barrel, and a cavity is formed by the two barrel bodies; the movable carrier is movably arranged in the cavity along the length direction of the lens barrel; the detection assembly is arranged between the lens barrel and the movable carrier and used for measuring the moving stroke of the movable carrier, and the detection assembly comprises an induction sensor and a trigger body capable of triggering the induction of the induction sensor.

Description

Zoom lens and photographing apparatus

Technical Field

The invention relates to the technical field of photographic equipment, in particular to a zoom lens and photographic equipment.

Background

Most of existing zoom lenses are driven by voice coil motors, the rotor of the existing voice coil motor is a coil wound outside a movable carrier, the stator is a yoke ring fixed in a lens barrel, the existing yoke ring is a circular ring sleeved outside the coil, and the magnet ring is arranged inside the yoke ring.

Disclosure of Invention

The invention mainly aims to provide a zoom lens and photographic equipment, and aims to solve the problem that the voice coil motor of the existing zoom lens is low in focusing precision.

To achieve the above object, the present invention provides a zoom lens including:

the lens cone comprises at least two cylinder bodies which are detachably connected along the length direction of the lens cone, and a cavity is formed by the two cylinder bodies;

the movable carrier is movably arranged in the cavity along the length direction of the lens barrel; and the number of the first and second groups,

the detection assembly is arranged between the lens barrel and the movable carrier and used for measuring the moving stroke of the movable carrier, and the detection assembly comprises an induction sensor and a trigger body capable of triggering the induction of the induction sensor.

Optionally, one of the two adjacent cylinders is a first cylinder, and the other one is a second cylinder;

one of the induction sensor and the trigger body is arranged on the movable carrier, and the other is arranged on the first cylinder body and/or the second cylinder body.

Optionally, the moving carrier includes a plurality of moving groups distributed at intervals along a length direction of the lens barrel;

the detection assembly comprises an induction sensor assembly and a trigger body which can trigger the induction sensor assembly;

the induction sensor assembly is correspondingly arranged on the plurality of mobile groups, and the trigger body is arranged on the lens cone.

the movable carrier comprises a first movable group and a second movable group which are distributed at intervals along the length direction of the lens barrel;

the inductive sensor assembly includes a first sensor and a second sensor;

the first sensor is arranged on the first moving group, the second sensor is arranged on the second moving group, and the trigger body is arranged on the first barrel.

the inductive sensor assembly includes a first sensor and a second sensor;

the first sensor is arranged on the first moving group, the second sensor is arranged on the second moving group, and the trigger body is arranged on the second barrel.

the detection assembly comprises a first sensor and a second sensor;

the first sensor is arranged on the first moving group, the second sensor is arranged on the second moving group, and the trigger body is arranged on the first cylinder body and the second cylinder body in a crossing mode.

Optionally, the zoom lens further includes a driving assembly disposed between the lens barrel and the moving carrier, and the driving assembly enables a movable stroke of the induction sensor to be smaller than a length of the trigger body.

the detection assembly comprises an induction sensor and a trigger body capable of triggering the induction of the induction sensor;

an installation part is arranged on the inner wall of one side, facing the moving carrier, of the first cylinder body, and the induction sensor or the trigger body is correspondingly arranged on the installation part; and/or the presence of a gas in the gas,

the second barrel moves towards be provided with the installation department on the inner wall of one side of removal carrier, inductive pick up perhaps trigger body corresponds and locates the installation department.

Optionally, the mounting part is a metal piece arranged on the first cylinder and/or the second cylinder;

the induction sensor or the trigger body is correspondingly arranged on the end face of the metal piece, which faces one side of the movable carrier.

The present invention also provides a photographing apparatus including a zoom lens, the zoom lens including:

In the technical scheme of the invention, when the zoom lens is focused, the movable carrier moves in the lens barrel, and the detection component arranged between the movable carrier and the lens barrel can measure the moving stroke of the movable carrier, so as to detect whether the movable carrier moves to a focusable position or not, thereby improving the focusing accuracy of the zoom lens.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a zoom lens according to a first embodiment of the present invention;

FIG. 2 is a schematic perspective view of a zoom lens according to a second embodiment of the present invention;

FIG. 3 is a schematic perspective view of a zoom lens according to a third embodiment of the present invention;

FIG. 4 is a schematic perspective view illustrating a fourth embodiment of a zoom lens according to the present invention;

FIG. 5 is a schematic perspective view illustrating a fifth embodiment of a zoom lens according to the present invention;

FIG. 6 is a schematic perspective view of a zoom lens according to a sixth embodiment of the present invention;

FIG. 7 is a schematic perspective view illustrating a seventh embodiment of a zoom lens according to the present invention;

FIG. 8 is a schematic perspective view illustrating an eighth embodiment of a zoom lens according to the present invention;

FIG. 9 is a schematic perspective view illustrating a ninth embodiment of a zoom lens system according to the present invention;

fig. 10 is a schematic perspective view of a zoom lens according to a tenth embodiment of the present invention.

The embodiment of the invention is illustrated by reference numerals:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Zoom lens	31	Magnetic structure
1	Lens barrel	32	Induction coil
				11	A first cylinder	321	First induction coil
111	Clamping groove	322	Second induction coil
				112	Locating pin	4	Detection assembly
12	Second cylinder	41	Inductive sensor
				121	Buckle	411	First inductive transducer
122	Locating hole	412	Second inductive transducer
				2	Moving carrier	42	Trigger body
21	First mobile group	5	Guide structure
				22	Second mobile group	6	Mounting part
3	Drive assembly

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the above, the present invention provides a zoom lens and a photographing apparatus. Fig. 1 to 10 are views illustrating a zoom lens according to an embodiment of the present invention.

Referring to fig. 1 to 10, the zoom lens 100 includes a lens barrel 1, a moving carrier 2 and a detecting component 4, where the lens barrel 1 includes at least two barrels detachably connected along a length direction thereof, and a cavity is formed by the two barrels together; the movable carrier 2 is movably arranged in the cavity along the length direction of the lens barrel 1; the detection assembly 4 is disposed between the lens barrel 1 and the moving carrier 2, and is configured to measure a moving stroke of the moving carrier 2, and the detection assembly 4 includes an inductive sensor 41 and a trigger 42 capable of triggering the inductive sensor to sense.

In the technical solution of the present invention, when the zoom lens 100 is focused, the moving carrier 2 moves in the lens barrel 1, and the detecting component 4 disposed between the moving carrier 2 and the lens barrel 1 can measure the moving stroke of the moving carrier 2, so as to detect whether the moving carrier 2 moves to a focusable position, thereby improving the focusing accuracy of the zoom lens 100.

In the present invention, the zoom lens 100 further includes a driving assembly 3, and the driving assembly 3 includes a voice coil motor disposed between the lens barrel 1 and the moving carrier 2, and is configured to drive the moving carrier 2 to move in the cavity along the length direction of the lens barrel 1.

Further referring to fig. 1, in this embodiment, one of the two adjacent cylinder bodies is a first cylinder body 11, and the other is a second cylinder body 12, that is, the lens barrel 1 includes the first cylinder body 11 and the second cylinder body 12 detachably connected, most of the lens barrels 1 of the existing zoom lens 100 are long, which is not beneficial to molding the lens barrel 1, and dividing the lens barrel 1 into two parts is not only beneficial to molding the lens barrel 1, but also simple in structure and convenient to install.

Specifically, the zoom lens 100 further includes a clamping groove 111 and a buckle 121 disposed at a joint of the first barrel 11 and the second barrel 12 and mutually clamped and matched with each other, one of the clamping groove 111 and the buckle 121 is disposed on the first barrel 11, the other is disposed on the second barrel 12, and the clamping and matching of the clamping groove 111 and the buckle 121 makes the connection of the first barrel 11 and the second barrel 12 more stable.

More specifically, the zoom lens 100 further includes a positioning pin 112 and a positioning hole 122, which are disposed at a joint of the first cylinder 11 and the second cylinder 12 and are matched with each other, wherein one of the positioning pin 112 and the positioning hole 122 is disposed on the first cylinder 11, and the other is disposed on the second cylinder 12, so that the first cylinder 11 and the second cylinder 12 are more convenient to mount.

For guaranteeing remove the stability that carrier 2 removed, zoom 100 still includes guide structure 5, guide structure 5 includes sliding fit's guiding hole and guiding axle each other, the guiding hole is located remove carrier 2, the guiding axle certainly first barrel 11 extends to second barrel 12, the spacing guide of guide structure 5 remove carrier 2 and be in remove in the cavity, improve the stability that removes carrier 2 and remove guarantees zoom 100's the precision that zooms.

In the present invention, the voice coil motor includes a magnetic structure 31 and an induction coil 32 which are matched with each other; magnetic structure 31 with induction coil 32, one of them is located remove carrier 2, and wherein another is located first barrel 11 with it sets up to remove between the carrier 2 voice coil motor can not only realize remove carrier 2's removal, simplify mounting structure moreover, save installation space.

In the present invention, the voice coil motor includes a magnetic structure 31 and an induction coil 32 which are matched with each other; magnetic structure 31 with induction coil 32, one of them is located remove carrier 2, and wherein another is located second barrel 12 with it sets up to remove between the carrier 2 voice coil motor can not only realize remove carrier 2's removal, simplify mounting structure moreover, save installation space.

It should be noted that, in the above two features, one of the magnetic structure 31 and the induction coil 32 is disposed on the moving carrier 2, and the other is disposed on the first cylinder 11, and one of the magnetic structure 31 and the induction coil 32 is disposed on the moving carrier 2, and the other is disposed on the second cylinder 12, which may be disposed alternatively or simultaneously; specifically, in the first, third, fifth and seventh embodiments, one of the magnetic structure 31 and the induction coil 32 is disposed on the moving carrier 2, and the other is disposed on the first cylinder 11 (see fig. 1, 3, 5 and 7); in the second, fourth, sixth and eighth embodiments, one of the magnetic structure 31 and the induction coil 32 is disposed on the moving carrier 2, and the other is disposed on the second cylinder 12 (see fig. 2, 4, 6 and 8), so that the voice coil motor is disposed between one of the first cylinder 11 and the second cylinder 12 and the moving carrier 2, which not only can realize the movement of the moving carrier 2, but also can simplify the installation structure and save the installation space.

In the present invention, the detecting assembly 4 includes an inductive sensor 41 and a triggering body 42 for triggering the induction of the inductive sensor 41; the inductive sensor 41 with trigger body 42, one of them is located remove carrier 2, and wherein another is located first barrel 11 with it sets up to remove between the carrier 2 detection component 4 can not only realize remove the measurement of the removal stroke of carrier 2, simplify the mounting structure moreover, save installation space.

In the present invention, the detecting assembly 4 includes an inductive sensor 41 and a triggering body 42 for triggering the induction of the inductive sensor 41; the inductive sensor 41 with trigger body 42, one of them is located remove carrier 2, and wherein another locates second barrel 12 with it sets up to remove between the carrier 2 detection component 4 can not only realize remove the measurement of the removal stroke of carrier 2, simplify mounting structure moreover, save installation space.

It should be noted that, in the above two features, one of the inductive sensor 41 and the trigger 42 is disposed on the movable carrier 2, and the other is disposed on the first cylinder 11, and one of the inductive sensor 41 and the trigger 42 is disposed on the movable carrier 2, and the other is disposed on the second cylinder 12, which may be disposed alternatively or simultaneously, specifically, in the first, third, fifth and seventh embodiments, one of the inductive sensor 41 and the trigger 42 is disposed on the movable carrier 2, and the other is disposed on the first cylinder 11 (see fig. 1, fig. 3, fig. 5 and fig. 7); in the second, fourth, sixth and eighth embodiments, one of the inductive sensor 41 and the trigger 42 is disposed on the movable carrier 2, and the other is disposed on the second cylinder 12 (see fig. 2, 4, 6 and 8), so that the detection assembly 4 is disposed between one of the first cylinder 11 and the second cylinder 12 and the movable carrier 2, thereby not only realizing the measurement of the moving stroke of the movable carrier 2, but also simplifying the installation structure and saving the installation space.

Specifically, referring to fig. 1, in the first embodiment, the magnetic structure 31 is disposed on the first cylinder 11, and the induction coil 32 is disposed on the moving carrier 2; the trigger body 42 is disposed on the first cylinder 11, and the inductive sensor 41 is disposed on the movable carrier 2.

Referring to fig. 2, in a second embodiment, the magnetic structure 31 is disposed on the second cylinder 12, and the induction coil 32 is disposed on the moving carrier 2; the trigger body 42 is disposed on the second cylinder 12, and the inductive sensor 41 is disposed on the movable carrier 2.

Referring to fig. 3, in a third embodiment, the magnetic structure 31 is disposed on the moving carrier 2, and the induction coil 32 is disposed on the first cylinder 11; the trigger body 42 is disposed on the first cylinder 11, and the inductive sensor 41 is disposed on the movable carrier 2.

Referring to fig. 4, in a fourth embodiment, the magnetic structure 31 is disposed on the moving carrier 2, and the induction coil 32 is disposed on the second cylinder 12; the trigger body 42 is disposed on the second cylinder 12, and the inductive sensor 41 is disposed on the movable carrier 2.

Referring to fig. 5, in a fifth embodiment, the magnetic structure 31 is disposed on the moving carrier 2, and the induction coil 32 is disposed on the first cylinder 11; the trigger body 42 is disposed on the movable carrier 2, and the inductive sensor 41 is disposed on the first cylinder 11.

Referring to fig. 6, in a sixth embodiment, the magnetic structure 31 is disposed on the moving carrier 2, and the induction coil 32 is disposed on the second cylinder 12; the trigger body 42 is disposed on the movable carrier 2, and the inductive sensor 41 is disposed on the second cylinder 12.

Referring to fig. 7, in a seventh embodiment, the magnetic structure 31 is disposed on the first cylinder 11, and the induction coil 32 is disposed on the moving carrier 2; the trigger body 42 is disposed on the movable carrier 2, and the inductive sensor 41 is disposed on the first cylinder 11.

Referring to fig. 8, in an eighth embodiment, the magnetic structure 31 is disposed on the second cylinder 12, and the induction coil 32 is disposed on the moving carrier 2; the trigger body 42 is disposed on the movable carrier 2, and the inductive sensor 41 is disposed on the second cylinder 12.

In another embodiment, the trigger 42 is disposed on the movable carrier 2, and the inductive sensor 41 is disposed across the first cylinder 11 and the second cylinder 12, so as to not only ensure the measuring effect of the detecting assembly 4, but also enhance the connection stability of the first cylinder 11 and the second cylinder 12.

In another embodiment, the inductive sensor 41 is disposed on the movable carrier 2, and the trigger 42 is disposed across the first cylinder 11 and the second cylinder 12, so as to not only refine the measurement result of the detecting assembly 4, but also enhance the stability of the connection between the first cylinder 11 and the second cylinder 12.

In the present invention, a mounting portion 6 is disposed on an inner wall of the first cylinder 11 facing the moving carrier 2, and the inductive sensor 41 or the trigger 42 is correspondingly disposed on the mounting portion 6, so as to facilitate mounting of the inductive sensor 41 or the trigger 42.

In the present invention, a mounting portion 6 is disposed on an inner wall of the second cylinder 12 facing the moving carrier 2, and the inductive sensor 41 or the trigger 42 is correspondingly disposed on the mounting portion 6, so as to facilitate mounting of the inductive sensor 41 or the trigger 42.

It should be noted that, above-mentioned two characteristics, first barrel 11 orientation be provided with installation department 6 on the inner wall of one side of removal carrier 2 and second barrel 12 orientation be provided with installation department 6 on the inner wall of one side of removal carrier 2, can the alternative setting, also can set up simultaneously, in this embodiment, first barrel 11 orientation be provided with installation department 6 on the inner wall of one side of removal carrier 2 and second barrel 12 orientation be provided with installation department 6 and set up simultaneously on the inner wall of one side of removal carrier 2, be convenient for inductive transducer 41 perhaps trigger body 42's installation.

Specifically, in order to ensure the strength and flatness of the mounting portion 6, the mounting portion 6 is provided as a metal member; the inductive sensor 41 or the trigger body 42 is correspondingly arranged on the end surface of the metal piece facing to one side of the moving carrier 2, so that the inductive sensor 41 or the trigger body 42 is more stably installed.

In order to realize multiple zooming functions, the moving carrier 2 comprises at least two moving groups which are distributed at intervals along the length direction of the lens barrel 1; the voice coil motor comprises a magnetic structure 31 and a coil assembly which are matched with each other, wherein the magnetic structure 31 is arranged on the lens barrel 1, and the coil assembly is correspondingly arranged on the at least two moving groups; the detection assembly 4 comprises an inductive sensor 41 assembly and a trigger 42 for triggering the inductive sensor 41 assembly, wherein the trigger 42 is disposed on the lens barrel 1, the inductive sensor 41 assembly is correspondingly disposed on the at least two moving groups, and the magnetic structure 31 is disposed on the lens barrel 1, and the coil assembly is correspondingly disposed on the at least two moving groups, so that one voice coil motor can respectively drive a plurality of the moving groups to move, which not only has a simple structure, but also realizes the multifunctional zooming of the zoom lens 100, and furthermore, by disposing the trigger 42 on the lens barrel 1, the inductive sensor 41 assembly is correspondingly disposed on the at least two moving groups, so that one trigger 42 is corresponding to the inductive sensor 41 assembly to simultaneously measure the moving strokes of the at least two moving groups, which is not only simple in structure, and the moving accuracy of the at least two moving groups can be simultaneously ensured, thereby improving the stability of the zoom lens 100.

In the present invention, the voice coil motor includes a magnetic structure 31 and a coil assembly, which are matched with each other, and the coil assembly includes a first induction coil 321 and a second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is arranged on the first barrel 11, and the magnetic structure 31 arranged on the first barrel 11 corresponds to the first moving group 21 and the second moving group 22, so that the voice coil motor drives the first moving group 21 and the second moving group 22 to move independently, and the multifunctional zooming of the zoom lens 100 is realized.

In the present invention, the voice coil motor includes a magnetic structure 31 and a coil assembly, which are matched with each other, and the coil assembly includes a first induction coil 321 and a second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is arranged on the second cylinder 12, and the magnetic structure 31 arranged on the second cylinder 12 corresponds to the first moving group 21 and the second moving group 22, so that the voice coil motor respectively drives the first moving group 21 and the second moving group 22 to move independently, and the multifunctional zooming of the zoom lens 100 is realized.

It should be noted that, in the above two features, the magnetic structure 31 is disposed on the first cylinder 11, and the magnetic structure 31 is disposed on the second cylinder 12, which may be disposed alternatively or simultaneously, specifically, in the ninth embodiment, the voice coil motor includes the magnetic structure 31 and a coil assembly that are matched with each other, and the coil assembly includes the first induction coil 321 and the second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is disposed on the first cylinder 11 (see fig. 9); in the tenth embodiment, the voice coil motor includes a magnetic structure 31 and a coil assembly which are fitted to each other, the coil assembly including a first induction coil 321 and a second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is disposed on the second cylinder 12 (see fig. 10), and the magnetic structure 31 disposed on the first cylinder 11 or the second cylinder 12 corresponds to the first moving group 21 and the second moving group 22, so that the voice coil motor drives the first moving group 21 and the second moving group 22 to move independently, and thus the multifunctional zooming of the zoom lens 100 is realized.

In the present invention, the detecting assembly 4 includes a first inductive sensor 411, a second inductive sensor 412 and a triggering body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger body 42 is disposed on the first barrel 11, and the trigger body 42 is disposed on the first barrel 11 and correspondingly disposed on the first moving group 21 and the second moving group 22 through the first induction sensor 411 and the second induction sensor 412, so as to measure the moving strokes of the first moving group 21 and the second moving group 22 simultaneously, so that the structure is simple, the moving precision of the first moving group 21 and the second moving group 22 can be ensured simultaneously, and the stability of the zoom lens 100 is further improved.

In the present invention, the detecting assembly 4 includes a first inductive sensor 411, a second inductive sensor 412 and a triggering body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger 42 is disposed on the second cylinder 12, and the trigger 42 is disposed on the second cylinder 12 and correspondingly disposed on the first moving group 21 and the second moving group 22, and the first inductive sensor 411 and the second inductive sensor 412, so as to measure the moving strokes of the first moving group 21 and the second moving group 22 simultaneously, so that the structure is simple, the moving precision of the first moving group 21 and the second moving group 22 can be ensured simultaneously, and the stability of the zoom lens 100 is further improved.

In the above two features, the trigger body 42 is disposed on the first cylinder 11 and the trigger body 42 is disposed on the second cylinder 12, which may be disposed alternatively or simultaneously, specifically, in the ninth embodiment, the detection assembly 4 includes a first inductive sensor 411, a second inductive sensor 412 and a trigger body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger 42 is disposed on the first cylinder 11 (see fig. 9); in the tenth embodiment, the detecting assembly 4 includes a first inductive sensor 411, a second inductive sensor 412, and a triggering body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger 42 is disposed on the second cylinder 12 (see fig. 10), and by disposing one trigger 42 on the first cylinder 11 or the second cylinder 12, and correspondingly disposing the first inductive sensor 411 and the second inductive sensor 412 on the first moving group 21 and the second moving group 22, the moving strokes of the first moving group 21 and the second moving group 22 can be measured simultaneously, so that the structure is simple, the moving accuracy of the first moving group 21 and the second moving group 22 can be ensured, and the stability of the zoom lens 100 is further improved.

Referring to fig. 9, in a ninth embodiment, the vcm comprises a magnetic structure 31 and a coil assembly, wherein the magnetic structure and the coil assembly are matched with each other, and the coil assembly comprises a first induction coil 321 and a second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is arranged on the first cylinder 11; the detection assembly 4 comprises a first inductive sensor 411, a second inductive sensor 412 and a trigger body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger 42 is disposed on the first cylinder 11.

Referring to fig. 10, in a tenth embodiment, the vcm comprises a magnetic structure 31 and a coil assembly, wherein the magnetic structure and the coil assembly are engaged with each other, and the coil assembly comprises a first induction coil 321 and a second induction coil 322; the first induction coil 321 and the second induction coil 322 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the magnetic structure 31 is arranged on the second cylinder 12; the detection assembly 4 comprises a first inductive sensor 411, a second inductive sensor 412 and a trigger body 42 for triggering the first inductive sensor 411 and the second inductive sensor 412; the first inductive sensor 411 and the second inductive sensor 412 are respectively and correspondingly arranged on the first moving group 21 and the second moving group 22; the trigger 42 is disposed on the second cylinder 12.

In a further embodiment, the detection assembly 4 comprises a first inductive sensor 411 and a second inductive sensor 412; the first inductive sensor 411 is disposed on the first movable group 21, the second inductive sensor 412 is disposed on the second movable group 22, and the trigger 42 is disposed across the first cylinder 11 and the second cylinder 12, so that the measurement result of the detection assembly 4 is accurate, and the connection stability of the first cylinder 11 and the second cylinder 12 can be enhanced.

It should be noted that the driving component 3 makes the moving stroke of the inductive sensor 41 smaller than the length of the trigger 42, so as to ensure that the detecting component 4 can accurately measure the moving stroke of the moving carrier 2.

In addition, in the present invention, the magnetic structure 31 includes a magnetic yoke body, a magnetic yoke cover and a magnetic stripe, the magnetic yoke body includes two straight magnetic yoke sections that are oppositely disposed, and one ends of the two straight magnetic yoke sections that correspond to each other are connected by an arc-shaped magnetic yoke section; the magnetic yoke cover body is covered at the other end corresponding to the two straight magnetic yoke sections through a detachable connecting structure so as to form an annular magnetic yoke body together with the magnetic yoke body; the magnetic stripe is arranged in the annular magnetic yoke body and is detachably mounted on one of the straight magnetic yoke sections. In the technical scheme of the invention, the annular magnet yoke body is arranged into an assembly structure of the magnet yoke body and the magnet yoke cover body, so that the magnet structure 31 is convenient to mount; will the yoke body sets up to the structure of two straight yoke sections and arc yoke section, and the magnetite setting is on one of them straight yoke section for the magnetite becomes the magnetic stripe by current magnet ring, and the length of magnetic stripe is bigger than the width of magnet ring, thereby makes voice coil motor has bigger drive stroke, and then has increased zoom lens 100's focusing scope.

The voice coil motor also comprises an annular coil wound along the axial line of the length direction of the straight magnetic yoke section; when the annular coil is powered on, a permanent magnetic field is generated, electric energy is converted into mechanical energy by changing the size of direct current of the coil in the motor, the movable carrier 2 is driven to move, and the movable carrier 2 is used for installing the zoom lens 100, so that the movable carrier 2 is movably installed in the cavity along the guide axial direction, the zoom lens 100 is driven to move, and the driving operation is realized.

Furthermore, in the present invention, the detecting component 4 includes an inductive sensor 41 and a trigger body 42 capable of triggering the inductive sensor 41 to sense, a plurality of trigger portions are formed on the trigger body 42, one of the inductive sensor 41 and the trigger body 42 is disposed on the lens barrel 1, the other is disposed on the movable carrier 2, the inductive sensor 41 and the trigger body 42 move relatively to the inductive sensor 41 and the trigger portion to sense the corresponding trigger portion, so as to detect whether the movable carrier 2 moves to a specified position, thereby improving the focusing accuracy of the zoom lens 100.

Specifically, the present invention does not limit the specific forms of the inductive sensor 41 and the trigger 42, in this embodiment, the inductive sensor 41 is a magnetic induction type sensor, the trigger 42 is a magnetic strip disposed opposite to the magnetic induction type sensor, the plurality of trigger parts are a plurality of magnetic segments formed on the magnetic strip by interval magnetization, and when the magnetic induction type sensor moves to be opposite to one of the magnetic segments, the magnetic induction type sensor generates induction, so as to measure the displacement of the moving carrier 2, and further detect whether the moving carrier 2 moves to a specified position, thereby improving the focusing accuracy of the zoom lens 100.

In another embodiment, the inductive sensor 41 is a light-sensitive sensor, the trigger 42 is a reflection grating provided to face the light-sensitive sensor, the plurality of trigger parts are a plurality of grating lines formed on the reflection grating, the emitting part of the light-sensitive sensor can emit detection light to the reflection grating, the light-receiving part of the light-sensitive sensor can receive the reflection light of the reflection grating, when the light-sensitive sensor moves to be opposite to one of the grating lines, the intensity of the reflected light received by the light-absorbing part of the light-sensitive sensor changes, the light-sensitive sensor generates a sensing, so that the displacement of the mobile carrier 2 can be measured, and then whether the moving carrier 2 moves to a designated position is detected, and the focusing accuracy of the zoom lens 100 is improved.

In order to adjust the displacement of the movable carrier 2 in time when the displacement of the movable carrier 2 deviates, the zoom lens 100 further includes a flexible circuit board, one end of the flexible circuit board is fixedly mounted on the lens barrel 1, and the other end of the flexible circuit board is welded to the induction sensor 41, when the displacement of the movable carrier 2 deviates, a measurement signal sent by the detection component 4 is transmitted to a background through the flexible circuit board, and the movable carrier 2 is adjusted in time, so that the movable carrier 2 can be moved to a preset position, and the stability of the zoom lens 100 is ensured.

The present invention further provides a photographing apparatus, including the zoom lens 100, where the photographing apparatus includes all technical features of the zoom lens 100, and therefore, the photographing apparatus also has technical effects brought by all the technical features, and details are not repeated here.

Specifically, in this embodiment, the photographing apparatus is a security camera, the zoom speed of the security camera is faster than that of an existing automatic zoom security camera, and because the zoom lens 100 is provided with the detection component 4, the displacement of the mobile carrier 2 is accurately measured, the stability of the zoom lens 100 is enhanced, so that the security camera can stably change the focal length at a high speed, and is convenient for consumers to use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A zoom lens, characterized in that the zoom lens comprises:

2. The zoom lens according to claim 1, wherein one of two adjacent cylinders is a first cylinder and the other is a second cylinder;

3. The zoom lens according to claim 1, wherein the movement carrier includes a plurality of movement groups spaced apart along a length direction of the lens barrel;

4. The zoom lens according to claim 3, wherein one of two adjacent cylinders is a first cylinder and the other is a second cylinder;

the inductive sensor assembly includes a first sensor and a second sensor;

5. The zoom lens according to claim 3, wherein one of two adjacent cylinders is a first cylinder and the other is a second cylinder;

the inductive sensor assembly includes a first sensor and a second sensor;

6. The zoom lens according to claim 3, wherein one of two adjacent cylinders is a first cylinder and the other is a second cylinder;

the detection assembly comprises a first sensor and a second sensor;

7. The zoom lens according to claim 1, further comprising a driving assembly disposed between the lens barrel and the moving carrier, wherein the driving assembly enables a moving stroke of the induction sensor to be smaller than a length of the trigger body.

8. The zoom lens according to claim 1, wherein one of two adjacent cylinders is a first cylinder and the other is a second cylinder;

9. The zoom lens according to claim 8, wherein the mount portion is a metal member provided on the first cylinder and/or the second cylinder;

10. A photographing apparatus comprising the zoom lens according to any one of claims 1 to 9.