CN219978599U - Quick focusing lens and camera - Google Patents

Abstract

The utility model belongs to the technical field of lenses and discloses a quick focusing lens and a camera, wherein the quick focusing lens comprises a fixed cylinder, a zoom group, a focusing group, an adjusting gasket and an adjusting ring, wherein a containing groove extending along the optical axis direction is arranged in the fixed cylinder; the zoom group is arranged in the accommodating groove in a sliding manner along the optical axis direction; the focusing group is arranged in the accommodating groove in a sliding manner along the optical axis direction and comprises a focusing lens frame and a focusing group sleeve, and the adjusting gasket is arranged between the focusing lens frame and the focusing group sleeve and used for adjusting the position of the focusing lens frame; the adjusting ring is sleeved outside the fixed cylinder and can rotate by taking the optical axis as the axis, the zoom group and the focusing group are connected with the adjusting ring, and the zoom group and the focusing group synchronously approach or depart along with the rotation of the adjusting ring. The rapid focusing lens can realize real-time focusing, shortens focusing time after zooming, and has higher imaging quality.

Description

Quick focusing lens and camera

Technical Field

The present utility model relates to the field of lens technologies, and in particular, to a quick focusing lens and a camera.

Background

The zoom lens is a camera lens which can change focal length within a certain range so as to obtain images with different sizes and different scenery ranges at different wide and narrow market angles. The conventional zoom lens generally includes a focus group for focusing and a zoom group for zooming, and the focus group and the zoom group are controlled by separate controls, so that a photographer cannot perform focusing and zooming at the same time, and it takes a certain time for focusing to be clear. Moreover, due to manufacturing tolerances of all parts of the zoom lens, it is difficult to ensure that the back focus of the zoom lens meets design requirements, thereby affecting the imaging quality of the lens.

Therefore, there is a need to provide a quick focusing lens and a camera to solve the above problems.

Disclosure of Invention

According to one aspect of the utility model, the utility model provides a quick focusing lens, which can realize real-time focusing, shortens focusing time after zooming of the lens and has higher imaging quality.

To achieve the purpose, the utility model adopts the following technical scheme:

a quick focus lens comprising:

the fixed cylinder is internally provided with a containing groove extending along the optical axis direction;

the zoom group is arranged in the accommodating groove in a sliding manner along the optical axis direction;

the focusing group is arranged in the accommodating groove in a sliding manner along the optical axis direction;

the adjusting gasket is arranged between the focusing lens frame and the focusing group sleeve and used for adjusting the position of the focusing lens frame;

the adjusting ring is sleeved outside the fixed cylinder and can rotate by taking the optical axis as an axis, the zoom group and the focusing group are connected with the adjusting ring, and the zoom group and the focusing group synchronously approach or depart along with the rotation of the adjusting ring.

Optionally, the fixed cylinder is provided with a first chute and a second chute extending along the optical axis direction, and the inner wall of the adjusting ring is provided with a first cam groove and a second cam groove;

the zoom group comprises a zoom group sleeve, a first sliding block is arranged on the zoom group sleeve, and the first sliding block is arranged in the first sliding groove in a sliding penetrating manner and is in sliding connection with the first cam groove;

the focusing group sleeve is provided with a second sliding block, and the second sliding block is arranged in the second sliding groove in a sliding penetrating mode and is in sliding connection with the second cam groove.

Optionally, the first sliding block includes a first sliding section and a second sliding section, the first sliding section is slidably connected with the first sliding groove, the second sliding section is slidably connected with the first cam groove, the first sliding section is square, and a connection end of the second sliding section is in a shape of a truncated cone; and/or the number of the groups of groups,

the second sliding block comprises a third sliding section and a fourth sliding section, the third sliding section is in sliding connection with the second sliding groove, the fourth sliding section is in sliding connection with the second cam groove, the third sliding section is square, and the connecting end of the fourth sliding section is in a round table shape.

Optionally, the first sliding grooves are arranged in a plurality, the first sliding grooves are arranged at intervals along the circumferential direction of the fixed cylinder, the first cam grooves are arranged in a plurality, and the first cam grooves are arranged in a one-to-one correspondence with the first sliding grooves; and/or the number of the groups of groups,

the second sliding grooves are formed in a plurality, the second sliding grooves are arranged at intervals along the circumferential direction of the fixed cylinder, the second cam grooves are formed in a plurality, and the second cam grooves are arranged in one-to-one correspondence with the second sliding grooves.

Optionally, an external thread is arranged on the outer wall of the fixed cylinder, a threaded hole is arranged on the fixed seat of the camera, and the external thread is in threaded connection with the threaded hole.

Optionally, the zoom group includes annular boss, annular boss laminating in the inner wall of fixed section of thick bamboo.

Optionally, the zoom group includes zoom group sleeve and zoom picture frame, be equipped with the slot on the zoom group sleeve, be equipped with grafting portion on the zoom picture frame, grafting portion peg graft in the slot.

Optionally, be equipped with on the outer wall of fixed section of thick bamboo along the spacing groove of fixed section of thick bamboo's circumference extension, set up the locating part on the adjusting ring, locating part sliding connection in the spacing groove.

Optionally, an adjusting gear is arranged on the outer wall of the adjusting ring, and the adjusting gear can be meshed with a driving gear of the reduction gearbox.

According to another aspect of the present utility model, the present utility model further provides a camera, including a fixing base and the quick focusing lens according to any one of the above technical solutions, where the quick focusing lens is mounted on the fixing base.

The utility model has the beneficial effects that:

the utility model provides a quick focusing lens which comprises a fixed barrel, a zoom group, a focusing group, an adjusting gasket and an adjusting ring. The zoom group and the focusing group can synchronously approach or depart along the optical axis direction by rotating the adjusting ring, so that the quick focusing lens can focus while zooming, and further realize real-time focusing.

When the quick focusing lens is assembled, the focusing group and the zoom group are assembled, then the detection equipment is utilized to detect the back focus of the quick focusing lens, and the adjusting gasket with proper size is selected according to the detection result to be arranged between the focusing lens frame and the focusing group sleeve, so that the back focus of the quick focusing lens meets the design requirement, and the imaging quality of the quick focusing lens can be ensured.

The utility model also provides a camera which comprises the fixed seat and the quick focusing lens, wherein the focusing method of the camera is simple, and the imaging quality is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is an exploded view of a quick focus lens according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a quick focus lens provided by an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a quick focusing lens according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure of a fixing barrel according to an embodiment of the present utility model;

FIG. 5 is a schematic view of an adjusting ring at a first view angle according to an embodiment of the present utility model;

FIG. 6 is a schematic view of an adjusting ring at a second view angle according to an embodiment of the present utility model;

FIG. 7 is an exploded view of a focus group provided by an embodiment of the present utility model;

fig. 8 is an exploded view of a variable magnification group provided by an embodiment of the present utility model.

In the figure:

100. a fixed cylinder; 110. a first chute; 120. a second chute; 130. an external thread; 140. a limit groove; 150. a clamping groove; 200. a zoom group; 210. a zoom group sleeve; 211. a slot; 220. a zoom lens frame; 221. a plug-in part; 230. a first slider; 231. a first sliding section; 232. a second sliding section; 240. an annular boss; 300. a focus group; 310. a focusing mirror frame; 320. a focus group sleeve; 321. a support surface; 330. a second slider; 331. a third sliding section; 332. a fourth sliding section; 400. adjusting the gasket; 500. an adjusting ring; 510. a first cam groove; 520. a second cam groove; 530. a limiting piece; 540. an adjusting gear; 550. a clamping protrusion; 600. a decorative ring.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a quick focusing lens, which can realize real-time focusing, shortens focusing time after zooming of the lens, and has higher imaging quality.

Specifically, as shown in fig. 1 to 8, the quick focus lens includes a fixed barrel 100, a magnification varying group 200, a focusing group 300, an adjustment spacer 400, and an adjustment ring 500. Wherein, the fixed cylinder 100 is provided with a receiving groove extending along the optical axis direction, and the zoom group 200 and the focus group 300 are slidably disposed in the receiving groove along the optical axis direction. Alternatively, in the present embodiment, the focusing group 300 is near the top of the fixed cylinder 100 and the variable magnification group 200 is near the bottom of the fixed cylinder 100. In other embodiments, the positions of the focusing group 300 and the zoom group 200 may be exchanged, and may be set according to actual needs. The adjusting ring 500 is sleeved outside the fixed cylinder 100 and can rotate by taking the optical axis as the axis, the zoom group 200 and the focusing group 300 are connected with the adjusting ring 500, and the zoom group 200 and the focusing group 300 synchronously approach or keep away along with the rotation of the adjusting ring 500, so that the quick focusing lens can focus at the same time of zooming, further realize real-time focusing, and greatly shorten the adjusting time compared with the adjusting mode of focusing firstly and then zooming or firstly and then focusing in the prior art. The focus group 300 includes a focus lens frame 310 and a focus group sleeve 320, and an adjustment spacer 400 is disposed between the focus lens frame 310 and the focus group sleeve 320 for adjusting the position of the focus lens frame 310, thereby achieving position adjustment of a focus lens mounted in the focus lens frame 310. When the quick focusing lens is assembled, the focusing group 300 and the zoom group 200 are assembled, then the detection device is used for detecting the back focus of the quick focusing lens, and the adjusting gasket 400 with a proper size is selected according to the detection result and is arranged between the focusing lens frame 310 and the focusing group sleeve 320, so that the back focus of the quick focusing lens meets the design requirement, and the imaging quality of the quick focusing lens can be ensured.

It should be noted that, the back focus refers to an optical back focus, and the back focus detector measures the back focus value when the distance between the focusing group 300 and the zoom group 200 is the nearest and the farthest, respectively, and then calculates a compensation value according to the back focus value, and then determines the thickness of the adjusting pad 400 according to the magnitude of the compensation value.

Further, with continued reference to fig. 1, the quick focusing lens further includes a decoration ring 600, where the decoration ring 600 is attached to the top of the fixed barrel 100, and is used for sealing a gap between the fixed barrel 100 and the focusing group 300, thereby improving the aesthetic property of the quick focusing lens.

Further, with continued reference to fig. 1, 2, 4 and 5, the fixed cylinder 100 is provided with a first slide groove 110 and a second slide groove 120 extending in the optical axis direction, and the inner wall of the adjustment ring 500 is provided with a first cam groove 510 and a second cam groove 520, the first cam groove 510 corresponding to the first slide groove 110 and the second cam groove 520 corresponding to the second slide groove 120. The zoom group 200 includes a zoom group sleeve 210, a first slider 230 is disposed on the zoom group sleeve 210, and the first slider 230 is slidably disposed through the first chute 110 and is slidably connected to the first cam slot 510. The focusing group sleeve 320 is provided with a second slider 330, and the second slider 330 is slidably disposed through the second chute 120 and is slidably connected to the second cam slot 520. Alternatively, the shape of the first cam groove 510 and the shape of the second cam groove 520 may be set according to optical requirements for controlling respective movement distances at the time of relative movement between the focus group 300 and the magnification-varying group 200.

Specifically, with continued reference to fig. 7 and 8, in the present embodiment, the first slider 230 includes a first sliding section 231 and a second sliding section 232, the first sliding section 231 is slidably connected to the first sliding slot 110, and the second sliding section 232 is slidably connected to the first cam slot 510. And the first sliding section 231 is square, and since the first sliding groove 110 is a straight groove, the square first sliding section 231 and the first sliding groove 110 are better matched, which is beneficial to improving the sliding stability and smoothness of the zoom group 200. The connection end of the second sliding section 232 is in a truncated cone shape, and the arrangement mode facilitates the second sliding section 232 to smoothly enter the first cam groove 510, reduces assembly difficulty, and is also beneficial to improving sliding smoothness between the second sliding section 232 and the first cam groove 510. Likewise, the second slider 330 may include a third sliding section 331 and a fourth sliding section 332, the third sliding section 331 being slidably connected to the second sliding groove 120, the fourth sliding section 332 being slidably connected to the second cam groove 520. And the third sliding section 331 is square, and since the second sliding groove 120 is a straight groove, the cooperation between the square third sliding section 331 and the second sliding groove 120 is better, which is beneficial to improving the sliding stability and smoothness of the focusing group 300. The connecting end of the fourth sliding section 332 is in a truncated cone shape, and the arrangement mode facilitates the fourth sliding section 332 to smoothly enter the second cam groove 520, so that the assembly difficulty is reduced, and the sliding smoothness between the fourth sliding section 332 and the second cam groove 520 is improved.

Alternatively, a plurality of first sliding grooves 110 may be provided, and a plurality of first sliding grooves 110 are provided at intervals along the circumferential direction of the fixed cylinder 100, and a plurality of first cam grooves 510 are also provided, and a plurality of first cam grooves 510 are provided in one-to-one correspondence with a plurality of first sliding grooves 110, which is beneficial to improving the connection strength between the variable-magnification group 200 and the fixed cylinder 100 and the adjusting ring 500. Alternatively, in the present embodiment, the first slide grooves 110 and the first cam grooves 510 are each provided with three, the three first slide grooves 110 are disposed at intervals of 120 ° in the circumferential direction of the fixed cylinder 100, and the three first cam grooves 510 are disposed at intervals of 120 ° in the circumferential direction of the adjustment ring 500. In other embodiments, the number and arrangement of the first sliding grooves 110 and the first cam grooves 510 may be other, and may be set according to actual needs. Of course, a plurality of second slide grooves 120 may be provided, and a plurality of second slide grooves 120 may be provided at intervals along the circumferential direction of the fixed cylinder 100, and similarly, a plurality of second cam grooves 520 may be provided, and a plurality of second cam grooves 520 may be provided in one-to-one correspondence with a plurality of second slide grooves 120. This arrangement is advantageous in improving the strength of the connection between the focus group 300 and the stationary barrel 100 and the adjusting ring 500. Alternatively, in the present embodiment, the second slide grooves 120 and the second cam grooves 520 are each provided with three, three second slide grooves 120 are provided at intervals of 120 ° in the circumferential direction of the fixed cylinder 100, and three second cam grooves 520 are provided at intervals of 120 ° in the circumferential direction of the adjustment ring 500. In other embodiments, the number and arrangement of the second sliding grooves 120 and the second cam grooves 520 may be other, and may be set according to actual needs.

Further, with continued reference to fig. 4 and 6, the fixing barrel 100 is provided with a clamping groove 150, the inner wall of the adjusting ring 500 is provided with a clamping protrusion 550, and the clamping protrusion 550 is clamped in the clamping groove 150, so as to realize connection between the fixing barrel 100 and the adjusting ring 500. Specifically, the clamping groove 150 extends along the circumferential direction of the fixed cylinder 100 to ensure that the adjusting ring 500 can rotate relative to the fixed cylinder 100. Optionally, the plurality of clamping grooves 150 and the plurality of clamping protrusions 550 may be provided, for example, three clamping grooves 150 correspond to three clamping protrusions 550, etc., and the plurality of clamping grooves 150 and the plurality of clamping protrusions 550 may be provided according to actual needs, which is beneficial to improving the connection strength between the fixed cylinder 100 and the adjusting ring 500, and further improving the reliability of the operation of the adjusting ring 500.

Further, with continued reference to fig. 1, 3 and 4, the outer wall of the fixed barrel 100 is provided with external threads 130, the fixed seat of the camera is provided with a threaded hole, and the external threads 130 are in threaded connection with the threaded hole. The rear focus between the imaging surface of the quick focusing lens and the light sensitive surface of the chip in the fixing seat can be adjusted by adjusting the depth of the external thread 130 screwed into the threaded hole, so that imaging definition is ensured, and compared with the connection mode in the prior art that the relative position of the lens and the camera fixing seat is invariable, the connection mode is flexible and convenient to install, part scrapping caused by unclear imaging after installation is avoided, and cost saving is facilitated. Preferably, in order to better fix the quick focusing lens, after the quick focusing lens is mounted on the fixing base, glue is dispensed at the joint of the quick focusing lens and the fixing base.

Further, with continued reference to fig. 1, 3, 5 and 6, the outer wall of the adjusting ring 500 is provided with an adjusting gear 540, and the adjusting gear 540 can be meshed with a driving gear of the reduction gearbox, so that the quick focusing lens realizes automatic driving, and the intelligent degree is higher.

Further, with continued reference to fig. 1, 3 and 4, the outer wall of the fixed cylinder 100 is provided with a limiting groove 140, the limiting groove 140 extends along the circumferential direction of the fixed cylinder 100, and correspondingly, the adjusting ring 500 is provided with a limiting piece 530, and the limiting piece 530 is slidably connected to the limiting groove 140. By providing the limiting groove 140 and the limiting member 530, the rotation angle of the adjusting ring 500 can be limited, thereby controlling the closest distance and the farthest distance between the focusing group 300 and the variable magnification group 200. Alternatively, in the present embodiment, the limiting member 530 is a screw, and the protruding portion of the screw connected to the adjusting ring 500 is slidably connected to the limiting groove 140. In other embodiments, the structure of the limiting member 530 may be other, such as a limiting rod, and the like, which is set according to actual needs.

Optionally, referring to fig. 7, a supporting surface 321 is disposed on an inner wall of the focusing group sleeve 320, the focusing lens frame 310 is in a stepped structure, the stepped surface of the focusing lens frame 310 abuts against the supporting surface 321, and the supporting surface 321 is used for supporting the focusing lens frame 310. The adjusting pad 400 is disposed between the stepped surface and the supporting surface 321, and is used for adjusting the position of the focusing lens frame 310, further adjusting the position of the focusing lens installed in the focusing lens frame 310, so as to adjust the back focus of the focusing group 300, and the thickness of the adjusting pad 400 is selected according to the relation between the back focus of the rapid focusing lens detected by the detecting device and the design value.

Preferably, in order to increase the connection strength between the focus lens frame 310 and the focus group sleeve 320, glue may be dispensed at the connection of the focus lens frame 310 and the focus group sleeve 320.

Preferably, with continued reference to fig. 2 and 8, the variable magnification group 200 includes an annular boss 240, the annular boss 240 conforming to the inner wall of the stationary barrel 100. By arranging the annular boss 240, light rays can be prevented from entering the inside of the quick focusing lens from the gap between the zoom group 200 and the fixed barrel 100, and the imaging quality of the quick focusing lens can be guaranteed.

Optionally, with continued reference to fig. 8, in this embodiment, the zoom group 200 includes a zoom group sleeve 210 and a zoom lens frame 220, a slot 211 is disposed on the zoom group sleeve 210, a plug portion 221 is disposed on the zoom lens frame 220, and the plug portion 221 is plugged into the slot 211, which is simple in structure and convenient for installation and disassembly between the zoom group sleeve 210 and the zoom lens frame 220. The slots 211 may be plural, the plural slots 211 may be disposed at intervals along the circumference of the zoom group sleeve 210, and the corresponding plug-in parts 221 are plural, and the plural plug-in parts 221 are disposed in one-to-one correspondence with the plural slots 211. In the present embodiment, three slots 211 are provided, and the three slots 211 are provided at intervals of 120 ° along the circumferential direction of the variable-group sleeve 210. In other embodiments, the number and arrangement of the slots 211 may be other, and may be set according to actual needs.

Preferably, in order to improve the connection strength between the variable-magnification lens frame 220 and the variable-magnification sleeve 210, glue may be dispensed at the connection of the variable-magnification lens frame 220 and the variable-magnification sleeve 210.

The embodiment also provides a camera, which comprises the fixed seat and the quick focusing lens, and the camera adopts the quick focusing lens, so that the focusing method is simple, and the imaging quality is high.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Quick focusing lens, its characterized in that includes:

a fixed cylinder (100), wherein a containing groove extending along the optical axis direction is arranged in the fixed cylinder (100);

the zoom group (200) is arranged in the accommodating groove in a sliding manner along the optical axis direction;

a focusing group (300) slidably disposed in the accommodation groove along the optical axis direction;

an adjustment shim (400), the focus group (300) comprising a focus lens frame (310) and a focus group sleeve (320), the adjustment shim (400) being arranged between the focus lens frame (310) and the focus group sleeve (320) for adjusting the position of the focus lens frame (310);

the adjusting ring (500) is sleeved outside the fixed cylinder (100) and can rotate by taking the optical axis as an axis, the zoom group (200) and the focusing group (300) are connected with the adjusting ring (500), and the zoom group (200) and the focusing group (300) synchronously approach or depart along with the rotation of the adjusting ring (500).

2. The quick focus lens according to claim 1, wherein the fixed cylinder (100) is provided with a first slide groove (110) and a second slide groove (120) extending in the optical axis direction, and the inner wall of the adjusting ring (500) is provided with a first cam groove (510) and a second cam groove (520);

the zoom group (200) comprises a zoom group sleeve (210), a first sliding block (230) is arranged on the zoom group sleeve (210), and the first sliding block (230) is arranged in a sliding mode through the first sliding groove (110) and is in sliding connection with the first cam groove (510);

the focusing group sleeve (320) is provided with a second sliding block (330), and the second sliding block (330) is slidably arranged in the second sliding groove (120) in a penetrating manner and is slidably connected with the second cam groove (520).

3. The quick focus lens as claimed in claim 2, wherein the first slider (230) comprises a first sliding section (231) and a second sliding section (232), the first sliding section (231) is slidably connected with the first sliding slot (110), the second sliding section (232) is slidably connected with the first cam slot (510), the first sliding section (231) is square, and a connection end of the second sliding section (232) is round-table-shaped; and/or the number of the groups of groups,

the second sliding block (330) comprises a third sliding section (331) and a fourth sliding section (332), the third sliding section (331) is in sliding connection with the second sliding groove (120), the fourth sliding section (332) is in sliding connection with the second cam groove (520), the third sliding section (331) is square, and the connecting end of the fourth sliding section (332) is in a round table shape.

4. A quick focus lens as claimed in claim 3, wherein a plurality of said first slide grooves (110) are provided, a plurality of said first slide grooves (110) are provided at intervals along a circumferential direction of said fixed cylinder (100), a plurality of said first cam grooves (510) are provided, and a plurality of said first cam grooves (510) are provided in one-to-one correspondence with a plurality of said first slide grooves (110); and/or the number of the groups of groups,

the second sliding grooves (120) are arranged in a plurality, the second sliding grooves (120) are arranged at intervals along the circumferential direction of the fixed cylinder (100), the second cam grooves (520) are arranged in a plurality, and the second cam grooves (520) are arranged in a one-to-one correspondence with the second sliding grooves (120).

5. The quick focusing lens according to claim 1, wherein an external thread (130) is provided on an outer wall of the fixed barrel (100), a threaded hole is provided on a fixed seat of the camera, and the external thread (130) is in threaded connection with the threaded hole.

6. The quick focus lens as claimed in claim 1, wherein the magnification-varying group (200) comprises an annular boss (240), the annular boss (240) being fitted to an inner wall of the stationary cylinder (100).

7. The quick focusing lens according to claim 1, wherein the zoom group (200) comprises a zoom group sleeve (210) and a zoom lens frame (220), a slot (211) is formed in the zoom group sleeve (210), a plug-in portion (221) is formed in the zoom lens frame (220), and the plug-in portion (221) is plugged in the slot (211).

8. The quick focus lens according to any one of claims 1 to 7, wherein a limit groove (140) extending along the circumferential direction of the fixed barrel (100) is provided on the outer wall of the fixed barrel (100), a limit piece (530) is provided on the adjusting ring (500), and the limit piece (530) is slidably connected to the limit groove (140).

9. The quick focus lens according to any one of claims 1-7, characterized in that an adjusting gear (540) is provided on the outer wall of the adjusting ring (500), said adjusting gear (540) being capable of meshing with the driving gear of the reduction gearbox.

10. Camera, characterized in that it comprises a fixed base and a quick focus lens according to any of claims 1-9, said quick focus lens being mounted on said fixed base.