CN213693787U

CN213693787U - Telescopic zoom lens

Info

Publication number: CN213693787U
Application number: CN202022841524.7U
Authority: CN
Inventors: 王玉; 吕强; 孔旭东; 姚宏辉; 李昆; 王浩; 肖明志; 邱盛平; 龚俊强
Original assignee: Zhongshan United Optoelectronic Research Institute Co Ltd
Current assignee: Zhongshan United Optoelectronic Research Institute Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-13
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a telescopic zoom lens, which comprises a shell, a zoom device and a focusing component, wherein an installation channel is formed in the shell, one end of the installation channel is an object side end, and the other end is an image side end; the zooming device is positioned in the installation channel and comprises a first zooming component and an installation seat which are sequentially arranged close to the object side end, the first zooming component is elastically installed on the installation seat along the depth direction of the installation channel, the first zooming component comprises a first zooming lens barrel and a first zooming lens focusing component arranged in the first zooming lens barrel, the first zooming lens focusing component comprises a focusing lens barrel and a focusing lens arranged in the focusing lens barrel, the focusing lens barrel and the first zooming lens barrel are adjustably arranged along the depth direction of the installation channel, when the first zooming component is collided with the outside, a shot picture is blurred from clarity under the elastic action, a control element inside the mobile phone controls the first zooming component and the focusing component to retract to be consistent with the thickness of the mobile phone after detecting the picture change, and the protection effect is achieved.

Description

Telescopic zoom lens

Technical Field

The utility model relates to a zoom technical field, in particular to telescopic zoom.

Background

The mobile phones sold in the market at present are provided with a plurality of optical photographing modules and a common zoom lens with a periscopic structure, the structure introduces an optical element of a right-angle reflecting prism, incident light is reflected to be transmitted in a direction vertical to the thickness direction of the mobile phone through the reflecting prism, the total length of the zoom lens is lengthened, the moving range of a zoom lens group is expanded, and further the multiplying power of optical zooming is increased. However, in the zoom lens with the periscopic structure, the diameter of the lens is limited by the thickness of the mobile phone, so that the diameter of the lens is relatively small, which reduces the light flux entering the zoom optical module and affects the imaging quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a telescopic zoom lens through telescopic mode focus regulation, does not receive the restriction of cell-phone thickness, but the cell-phone is at the shooting in-process, for example in the intensive or narrow and small place in space of crowd, the whole thickness of camera lens after stretching out is greater than cell-phone thickness, receives easily to collide with and cut to pieces, causes the damage to damage and rubs

In order to achieve the above object, the present invention provides a telescopic zoom lens, including:

the device comprises a shell, a first fixing device and a second fixing device, wherein an installation channel is formed in the shell, one end of the installation channel is an object side end, and the other end of the installation channel is an image side end;

the zoom device is positioned in the mounting channel and comprises a first zoom component and a mounting seat which are sequentially arranged close to the object side end, the first zoom component is elastically mounted on the mounting seat along the depth direction of the mounting channel, and the first zoom component comprises a first zoom lens barrel and a first zoom lens arranged in the first zoom lens barrel; and the number of the first and second groups,

the focusing assembly comprises a focusing lens barrel and a focusing lens arranged in the focusing lens barrel, and the focusing lens barrel and the first zoom lens barrel are arranged in an adjustable mode along the depth direction of the mounting channel and used for adjusting the shooting focal length of the lens.

Optionally, the zoom apparatus includes an elastic member structure, and the elastic member structure is located between the first zoom lens barrel and the mount, so as to elastically mount the first zoom lens barrel to the mount.

Optionally, an end surface of the mounting base close to the image side end is provided with a mounting hole, and the first zoom lens barrel is provided with a first groove corresponding to the mounting hole;

a guide rod is further arranged between the mounting seat and the first zoom lens barrel, the guide rod extends along the depth direction of the mounting channel, and the guide rod penetrates through the mounting hole and extends into the first groove.

Optionally, the elastic member structure includes an annular elastic sheet, and an end surface of the annular elastic sheet close to the image side end is provided with a positioning hole;

the guide rod sequentially penetrates through the mounting hole and the positioning hole to be mounted in the first groove.

Optionally, the guide rods, the first grooves, the mounting holes and the positioning holes correspond to one another to form guide groups, and the guide groups are arranged in a plurality of positions and are arranged at intervals along the circumferential direction of the annular elastic sheet.

Optionally, the focusing assembly further includes a voice coil motor, the voice coil motor is located between the focusing lens barrel and the housing, and a driving end of the voice coil motor is in driving connection with the focusing lens barrel to drive the focusing lens barrel to move along the depth direction of the installation channel.

Optionally, the telescopic zoom lens further comprises a telescopic driving assembly, the telescopic driving assembly comprising:

the driving cylinder is rotatably installed in the installation channel along the depth direction of the installation channel and sleeved on the outer surface of the first zoom lens cone, and a driving chute is arranged on the side wall of the driving cylinder; and the number of the first and second groups,

one end of the driving column is arranged on the outer surface of the mounting seat, and the other end of the driving column is slidably mounted in the driving chute;

the driving cylinder rotates to drive the first zoom lens barrel to move along the depth direction of the mounting channel.

Optionally, the zoom device includes an elastic member structure, the elastic member structure includes a plurality of sleeve members correspondingly sleeved on the outer surfaces of the plurality of driving columns, and the outer surfaces of the plurality of sleeve members abut against the inner wall surfaces of the corresponding driving chutes.

Optionally, the telescopic drive assembly further comprises:

a driving motor having a driving shaft extending in a depth direction of the installation passage; and the number of the first and second groups,

and the gear set comprises a first gear and a second gear which are meshed with each other, the first gear is arranged on the driving shaft, and the second gear is arranged on the driving barrel.

Optionally, the telescopic driving assembly further includes a fixing cylinder located in the installation channel, the fixing cylinder is located between the driving cylinder and the first zoom lens barrel, a guide hole extending along a depth direction of the installation channel is formed in an outer surface of the fixing cylinder, and the guide hole is used for the driving column to penetrate through so as to limit the rotation of the driving column.

Optionally, the zoom apparatus further comprises:

the second zooming component is positioned in the mounting channel and comprises a second zooming lens barrel and a second zooming lens arranged in the second zooming lens barrel; and the number of the first and second groups,

a third zoom assembly positioned in the mounting channel, the third zoom assembly including a third zoom lens barrel and a third zoom lens disposed in the third zoom lens barrel;

the first zooming component, the mounting seat, the second zooming component, the focusing component and the third zooming component are sequentially arranged from the object side end to the image side end, and the first zooming component, the second zooming lens barrel, the focusing lens barrel and the third zooming lens barrel are arranged in an adjustable mode along the depth direction of the mounting channel.

The technical scheme of the utility model in, focus the lens cone with first zoom lens cone is followed the adjustable setting of direction of depth of installation passageway, thereby make first zoom lens piece with focus the distance adjustment between the lens piece, realize the regulation of focus and focus, improve the quality of formation of image, simultaneously, first zoom subassembly elastic mounting extremely on the mount pad, work as thereby the position of first zoom lens cone is adjusted and is made first zoom subassembly part is outstanding the casing works as first zoom subassembly receives external colliding with, first zoom subassembly orientation the direction of like the side removes, first zoom subassembly with distance change between the mount pad, promptly first zoom lens cone for the distance change of focusing the lens cone, the picture of shooing at this moment is become fuzzy by clear, and the inside corresponding control element of cell-phone detects picture change back automatic control first zoom subassembly with focus the subassembly and resume to focus the subassembly and to the distance change of focusing the lens cone The initial position, namely the retraction to be consistent with the thickness of the mobile phone, plays a role in protection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 cross-sectional view of an embodiment of a retractable zoom lens provided by the present invention;

FIG. 2 is a perspective view of the first zoom assembly and the mount of FIG. 1 in mating relationship;

FIG. 3 is a schematic partially cross-sectional perspective view of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 2;

fig. 5 is a perspective view of the sleeve member of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Telescopic zoom lens	24	Third zooming assembly
1	Shell body	3	Focusing assembly
				11	Installation channel	31	Focusing lens
11a	End of things	4	Elastic piece structure
				11b	Image side end	41	Guide rod
21	First zooming assembly	42	Sleeve member
				211	First zoom lens barrel	51	Drive cylinder
212	First zoom lens	52	Driving column
				22	Mounting seat	53	Driving motor
23	Second zoom assembly	54	Fixed cylinder

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if the present invention relates to a directional indication, the directional indication is only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments 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 technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Mobile phones sold in the market at present are equipped with a plurality of optical photographing modules, an optical system of the traditional mobile phone photographing module is designed into a fixed-focus mode, and then a zoom module with a movable lens group is developed successively. The thickness of the mobile phone is limited to a certain extent, so that the moving range of the movable lens is relatively limited, in order to overcome the defect that the moving range of the movable lens group is limited by the thickness of the mobile phone, research and development personnel propose a zoom lens with a periscopic structure, the structure introduces an optical element of a right-angle reflecting prism, incident light is reflected into a direction perpendicular to the thickness direction of the mobile phone through the reflecting prism and transmitted, the total length of the zoom lens is lengthened, the moving range of the zoom lens group is expanded, and further the multiplying power of optical zooming is increased. However, in the periscopic structure, the diameter of the lens is limited by the thickness of the mobile phone, so that the diameter of the lens is relatively small, which reduces the light flux entering the zoom optical module and affects the imaging quality.

In order to realize great multiplying power and higher light flux that advances that zooms, the utility model discloses a novel zoom lens structure for cell-phone has been proposed, effectively promotes into light volume and image definition, has better performance under the dim light condition. Fig. 1 to fig. 5 are embodiments of a telescopic zoom lens provided by the present invention.

Referring to fig. 1 to 2, the retractable zoom lens 100 includes a housing 1, a zoom device, and a focusing assembly 3, wherein an installation channel 11 is formed in the housing 1, one end of the installation channel 11 is an object-side end 11a, and the other end is an image-side end 11 b; the zoom device is located in the mounting channel 11, the zoom device includes a first zoom assembly 21 and a mounting seat 22 which are sequentially arranged near an object side end 11a, the first zoom assembly 21 is elastically mounted on the mounting seat 22 along a depth direction of the mounting channel 11, the first zoom assembly 21 includes a first zoom lens barrel 211 and a first zoom lens 212 arranged in the first zoom lens barrel 211, the focusing assembly 3 includes a focusing lens barrel and a focusing lens 31 arranged in the focusing lens barrel, and the focusing lens barrel and the first zoom lens barrel 211 are adjustably arranged along the depth direction of the mounting channel 11 and used for adjusting a shooting focal length of the lens.

In the technical solution of the present invention, the focusing lens barrel and the first zoom lens barrel 211 are adjustably disposed along the depth direction of the installation channel 11, so as to adjust the distance between the first zoom lens 212 and the focusing lens 31, thereby achieving the adjustment and focusing of the focal length and improving the imaging quality, meanwhile, the first zoom assembly 21 is elastically mounted on the mounting seat 22, when the orientation of the first zoom lens barrel 211 is adjusted, the first zoom assembly 21 partially protrudes out of the housing 1, when the first zoom assembly 21 is collided with the outside, the first zoom assembly 21 moves towards the direction of the image side end 11b, the distance between the first zoom assembly 21 and the mounting seat 22 changes, that is, the distance of the first zoom lens barrel 211 relative to the focusing lens barrel changes, and the shot image is blurred clearly, after detecting the picture change, the corresponding control element inside the mobile phone automatically controls the first zooming component 21 and the focusing component 3 to restore to the initial positions, namely, retract to be consistent with the thickness of the mobile phone, thereby playing a protection role.

Further, in order to realize the elastic mounting of the first zoom assembly 21 relative to the mounting seat 22, referring to fig. 3, the zoom apparatus includes an elastic member structure 4, and the elastic member structure 4 is located between the first zoom lens barrel 211 and the mounting seat 22, so as to elastically mount the first zoom lens barrel 211 to the mounting seat 22. When one side of the first zoom lens cone 211 close to the object side end 11a is collided, the first zoom lens cone 211 drives the first zoom lens 212 to extrude the mounting seat 22, at the moment, the elastic part structure 4 is compressed, the focal length is changed, the shot image quality becomes fuzzy, the installation and the setting are convenient, the zooming and focusing are not influenced, and when the first zoom lens cone 211 and the focusing lens cone are adjusted relatively, the first zoom lens cone 211 and the focusing lens cone can follow the mounting seat 22 to act together. Damage caused by pressing, falling and bumping of the first zooming assembly 21 can be effectively prevented.

When the external force is removed, the elastic member 4 rebounds, so that the first zoom lens barrel 211 is restored to the initial position, and the next shooting adjustment is not affected.

For guiding, please refer to fig. 4, in this embodiment, an end surface of the mounting seat 22 close to the image side end 11b is provided with a mounting hole, and the first zoom lens barrel 211 is provided with a first groove corresponding to the mounting hole; a guide rod 41 is further disposed between the mounting seat 22 and the first zoom lens barrel 211, the guide rod 41 extends along the depth direction of the mounting channel 11, and the guide rod 41 penetrates through the mounting hole and extends into the first groove. The guide rod 41 is arranged to enable the first zoom lens cone 211 to move along the guide rod 41 all the time in the process of elastic movement, so that stability is ensured, and the first zoom lens cone 211 is displaced relative to the mounting seat 22 when elastic compression and rebound are placed.

Further, in an embodiment of the present invention, the elastic member structure 4 includes an annular elastic sheet, and a positioning hole is formed on an end surface of the annular elastic sheet close to the image side end 11 b; the guide rod 41 sequentially penetrates through the mounting hole and the positioning hole to be mounted in the first groove. Therefore, the annular elastic sheet is sequentially connected with the mounting seat 22 and the first zoom lens barrel 211 through the guide rod 41, and the annular elastic sheet is placed to be offset. The arrangement form of the annular elastic sheet is convenient for matching and installation, and the stress at all positions is uniform in the process of the elastic movement of the first zoom lens cone 211.

If necessary, the elastic mounting may be achieved by providing a plurality of compression springs or rubber members disposed at intervals in the circumferential direction, which will not be described in detail herein.

Further, in order to ensure the stability of positioning and the firmness of long-term use, the guide rod 41, the first groove, the mounting hole and the positioning hole are in one-to-one correspondence to form a guide group, and the guide group is provided with a plurality of guide groups and arranged at intervals along the circumferential direction of the annular elastic sheet. In this embodiment the direction group is equipped with 3 groups, and the triangulation location mode is more firm.

In order to realize the regulation of the lens cone of focusing, the utility model discloses in, it still includes voice coil motor to focus subassembly 3, voice coil motor is located focus the lens cone with between the casing 1, voice coil motor's drive end with focus the lens cone drive and connect, be used for the drive focus the lens cone and follow 11 degree of depth directions of installation passageway activity. A Voice Coil Motor (Voice Coil Motor) is a special form of direct drive Motor. The device has the characteristics of simple structure, small volume, high speed, high acceleration response speed and the like. The principle of operation is that an energized coil, when placed in a magnetic field, produces a force whose magnitude is proportional to the current applied to the coil. The voice coil motor is a simple electromagnetic device without direction conversion and has high reliability. The problems of durable wear, motion noise and the like of the conventional optical zoom lens are solved, the market demand is better met, and the experience of a user is improved.

In order to realize the adjustment of the zoom apparatus, in the present invention, the telescopic zoom lens 100 further includes a telescopic driving assembly, the telescopic driving assembly includes a driving cylinder 51, a driving cylinder 51: the driving cylinder 51 is rotatably mounted in the mounting channel 11 along the depth direction of the mounting channel 11, and is sleeved on the outer surface of the first zoom lens cone 211, and a driving inclined groove is formed in the side wall of the driving cylinder 51; one end of the driving column 52 is arranged on the outer surface of the mounting seat 22, and the other end of the driving column is slidably mounted in the driving chute; the driving cylinder 51 rotates to drive the first zoom lens barrel 211 to move along the depth direction of the installation channel 11. The driving cylinder 51 and the driving column 52 are matched in a way similar to cam groove driving, and lifting and descending are realized through the reciprocating motion of the driving cylinder 51, and the motion is smooth.

Further, in order to realize the reciprocating rotation of the driving cylinder 51, the telescopic driving assembly further comprises a driving motor 53 and a gear set, wherein the driving motor 53 is provided with a driving shaft extending along the depth direction of the mounting channel 11; the gear set comprises a first gear and a second gear which are meshed with each other, the first gear is arranged on the driving shaft, and the second gear is arranged on the driving barrel 51. The first zoom lens barrel 211 can be adjusted in the extension and contraction speed by adjusting the rotation speed of the driving motor 53 by driving the gear to rotate by the motor.

When needing to be explained, the transmission mode can also be through the lead screw, and the detailed explanation is not provided here.

In another embodiment, referring to fig. 5, the zoom apparatus includes an elastic member structure 4, the elastic member structure 4 includes a plurality of sleeve members 42 correspondingly sleeved on outer surfaces of the plurality of driving posts 52, and outer surfaces of the plurality of sleeve members 42 abut against inner wall surfaces of the corresponding driving chutes. When the driving columns 52 are in sliding fit with the driving cylinders, the sleeve member 42 moves along with the driving columns, when the first zooming assembly 21 is knocked by the outside, the first zooming assembly 21 and the mounting base 22 both move towards the direction of the image side end 11b, at this time, the driving columns 52 apply a force towards the direction of the image side end 11b relative to the driving chute, at this time, the sleeve member 42 is squeezed, so that the relative position of the first zooming lens barrel 211 relative to the focusing lens barrel is slightly changed, at this time, a shot picture is clear and blurred, and after detecting the picture change, corresponding control elements inside the mobile phone automatically control the first zooming assembly 21 and the focusing assembly 3 to restore to the initial positions, namely retract to be consistent with the thickness of the mobile phone, so as to play a role in protection.

The sleeve part 42 is columnar, faces the outer surface of the side end of the driving cylinder 51 in the center direction and is convexly provided with an annular bulge, the annular bulge is hollowed out, and two ends of the annular bulge are respectively abutted to the side surface of the mounting seat 22 and the outer surface of the driving cylinder 51 and used for placing the sleeve part 42 in the using process.

In order to ensure that the mounting seat 22 drives the first zoom lens 212 to move linearly all the time along the depth direction of the mounting channel 11 without deflection, in this embodiment, the telescopic driving assembly further includes a fixed cylinder 54 located in the mounting channel 11, the fixed cylinder 54 is located between the driving cylinder 51 and the first zoom lens barrel 211, a guide hole extending along the depth direction of the mounting channel 11 is formed in an outer surface of the fixed cylinder 54, and the guide hole is used for the driving column 52 to penetrate through so as to limit the rotation of the driving column 52. Therefore, the guide hole limits the movement stroke and the movement path, and the structure is simple and convenient to install.

Further, the zoom apparatus further includes a second zoom assembly 23, where the second zoom assembly 23 is located in the mounting channel 11, and the second zoom assembly 23 includes a second zoom lens barrel and a second zoom lens disposed in the second zoom lens barrel; the second zoom assembly 23 is located in the mounting channel 11, and the third zoom assembly 24 includes a third zoom lens barrel and a third zoom lens arranged in the third zoom lens barrel; the first zoom assembly 21, the mounting seat 22, the second zoom assembly 23, the focusing assembly 3, and the third zoom assembly 24 are sequentially disposed from the object side end 11a to the image side end 11b, and the first zoom assembly 21, the second zoom lens barrel, the focusing lens barrel, and the third zoom lens barrel are adjustably disposed along the depth direction of the mounting channel 11. Due to the linkage mode of the multiple zooming components, the telescopic zoom lens 100 is high in focusing speed, large in light transmission amount and more prominent in imaging effect, and the experience of a user is improved.

The utility model discloses in, first zoom subassembly 21 the second zoom subassembly 23 and the third zoom subassembly 24 all can pass through drive cylinder 51 with drive post 52 complex form carries out the transmission and adjusts, set up the drive chute of three different extension orbits of group on the drive cylinder 51, effectively reduce drive element's quantity, reduced the volume of module simultaneously, reduced the degree of difficulty and the requirement of the control of a plurality of mobile unit of zoom lens group, possible a plurality of mobile unit's linkage in coordination.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A retractable zoom lens, comprising:

2. The retractable zoom lens of claim 1, wherein the zoom apparatus comprises an elastic member structure between the first zoom lens barrel and the mount for elastically mounting the first zoom lens barrel to the mount.

3. The telescopic zoom lens according to claim 2, wherein an end surface of the mount near the image side end is provided with a mounting hole, and the first zoom lens barrel is provided with a first groove corresponding to the mounting hole;

4. The telescopic zoom lens of claim 3, wherein the elastic member structure comprises an annular elastic sheet, and an end surface of the annular elastic sheet, which is close to the image side end, is provided with a positioning hole;

5. The retractable zoom lens of claim 1, wherein the focusing assembly further comprises a voice coil motor, the voice coil motor is located between the focusing lens barrel and the housing, and a driving end of the voice coil motor is in driving connection with the focusing lens barrel for driving the focusing lens barrel to move in the depth direction of the mounting channel.

6. The retractable zoom lens of claim 1, further comprising a retractable drive assembly, the retractable drive assembly comprising:

7. The retractable zoom lens of claim 6, wherein the retractable drive assembly further comprises:

8. The telescopic zoom lens system as claimed in claim 6, wherein the zoom apparatus includes an elastic member structure, the elastic member structure includes a plurality of sleeve members correspondingly fitted over outer surfaces of the plurality of driving cylinders, and outer surfaces of the plurality of sleeve members abut against inner wall surfaces of the corresponding driving chutes.

9. The retractable zoom lens of claim 6, wherein the retractable driving assembly further comprises a fixed cylinder located in the mounting channel, the fixed cylinder is located between the driving cylinder and the first zoom lens barrel, and the outer surface of the fixed cylinder is provided with a guide hole extending along the depth direction of the mounting channel, and the guide hole is used for the driving column to pass through so as to limit the rotation of the driving column.

10. The telescopic zoom lens of claim 1, wherein the zoom apparatus further comprises:

the first zoom component, the mounting seat, the second zoom component, the focusing component and the third zoom component are sequentially arranged from the object side end to the image side end, and the first zoom component, the second zoom lens barrel, the focusing lens barrel and the third zoom lens barrel are arranged in an adjustable mode along the depth direction of the mounting channel.