Lens assembly

Abstract

The invention relates to the field of lens devices, in particular to a lens assembly which comprises a lens body, the lens body comprises a lens barrel and an adjusting barrel, a locking piece is installed at the tail end of the adjusting barrel, and the locking piece is used for splicing and assembling the lens body and a camera. The camera lens comprises a lens body, the lens body is provided with a locking piece, a telescopic adjusting assembly and an aperture adjusting device are installed in the adjusting cylinder, and the aperture adjusting device is located at the rear end of the telescopic adjusting assembly and located at the front end of the locking piece. The inner wall of the adjusting cylinder can be cleaned, the fixing cover is screwed, the fixing cover is taken out from the mounting groove, then the lens can be taken out from the mounting groove, the lens is cleaned, the inner wall of the lens cylinder is also convenient to clean, and the lens cylinder is manually controlled to stretch out and draw back in the adjusting cylinder through the telescopic adjusting assembly when the shooting depth of field is adjusted.

Description

Technical Field

[0001] The invention relates to the field of lens devices, in particular to a lens assembly. Background Art

[0002] Existing mainstream camera systems are generally divided into interchangeable lens cameras and non-interchangeable lens cameras.

[0003] Cameras with non-interchangeable lenses are mainly compact cameras, that is, they use a body and a lens, and the body and the lens are completely fixed together and cannot be disassembled when used by the user. The biggest problem with this model is that if it is an automatic zoom lens, the zoom of the lens needs to be driven by the body, which consumes power very quickly. For cameras with interchangeable lenses, they are mainly SLRs and mirrorless cameras. These cameras all use interchangeable lens mounts. When the lens is disassembled and assembled with the mount, dust will inevitably enter the lens. At this time, the lens components need to be disassembled so that the lens inside the lens can be cleaned. After the lens components are disassembled, it is also necessary to facilitate the assembly of the disassembled components together. During the use of the lens, it is usually necessary to adjust the distance between the lens part of the lens and the camera to adjust the depth of field of the camera. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a lens assembly.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lens assembly of the present invention comprises a lens body, wherein the lens body comprises a lens barrel and an adjustment barrel, a locking piece is installed at the rear end of the adjustment barrel, and the locking piece is used to assemble the lens body and the camera, a telescopic adjustment assembly and an aperture adjustment device are installed inside the adjustment barrel, the aperture adjustment device is located at the rear end of the telescopic adjustment assembly and at the front end of the locking piece, a lens is arranged in the lens barrel, and the aperture adjustment device is used to adjust the light transmittance of the lens, a groove is provided at the top of the rear end of the lens barrel, a slider is fixedly installed in the groove, the slider is slidably connected to the telescopic adjustment assembly, and the telescopic adjustment assembly is used to drive the slider to move forward and backward.

[0008] In order to facilitate the disassembly and assembly of the lens on the lens barrel, the present invention has the following improvements: a mounting groove is provided on the front side of the lens barrel, a fixing cover is installed in the mounting groove, a fixing edge is provided on the inner wall of the mounting groove, a limiting groove is provided on the fixing edge, a convex edge is provided around the outer side of the lens, a fixing block is provided around the rear end of the convex edge, the fixing block is adapted to the limiting groove, a limiting edge is provided at the inner end of the fixing cover, the fixing cover is installed in the mounting groove by a threaded structure, and the limiting edge is fitted with the front end of the convex edge.

[0009] In order to facilitate the sealing of the lens barrel, the present invention has an improvement in that a sealing groove is provided at the front end of the fixed cover, a sealing cover is installed in the sealing groove, the sealing cover is connected to the sealing groove through a threaded structure, a rotating handle is provided at the front end of the sealing cover, and arc grooves are provided on both sides of the rotating handle.

[0010] In order to facilitate the telescopic adjustment of the lens barrel in the adjustment barrel, the present invention has been improved in that the telescopic adjustment assembly includes a threaded screw, a first adjusting gear and a second adjusting gear, mounting blocks are provided at both ends of the inner wall of the adjustment barrel, both ends of the threaded screw are connected to the mounting blocks through bearing members, the first adjusting gear is fixedly mounted on the tail end of the threaded screw, an adjustment port is provided on the adjustment barrel, the second adjusting gear is mounted on the adjustment port through a bearing member, and the first adjusting gear is meshed with the second adjusting gear, and the slider is sleeved on the threaded screw through a threaded structure.

[0011] In order to protect the second adjusting gear, the present invention has an improvement in that a protective cover is installed on the adjusting port through a bolt structure, an opening is provided on the protective cover, the protective cover covers the top of the second adjusting gear, and the second adjusting gear protrudes from the opening.

[0012] In order to ensure the stability of the lens barrel when installed in the adjustment barrel, the present invention has the following improvements: a guide groove is arranged around the rear end of the lens barrel, a guide rod is arranged around the inner wall of the adjustment barrel, and the guide rod is slidably connected to the guide groove.

[0013] In order to facilitate the disassembly and assembly of the lens body on the added bayonet, the present invention is improved in that the locking piece includes an inner ring and an outer ring, the inner ring is surrounded by a plurality of fixing holes, the outer side of the adjustment tube is provided with a surrounding groove, one end of the outer ring is embedded in the surrounding groove, and the outer ring is rotatably installed on the surrounding groove, and the other end of the outer ring is connected to the inner ring through a threaded structure.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present invention provides a lens assembly having the following beneficial effects:

[0016] The lens body of the present invention is disassembled and assembled on the bayonet mount of the camera through a locking piece. After the lens body is disassembled from the bayonet mount of the camera, the inner wall of the adjustment tube can be cleaned, and the fixed cover is twisted to be taken out from the installation groove. After that, the lens can be taken out from the installation groove and cleaned. It is also convenient to clean the inner wall of the lens tube. When adjusting the depth of field of the camera, the telescopic adjustment component is used to manually control the telescopic movement of the lens tube in the adjustment tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the lens body structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the lens barrel structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the sealing cover structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the sealing cover structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the sealing cover structure of the present invention;

[0022] In the figure: 1, lens body; 2, lens barrel; 3, adjustment barrel; 4, aperture adjustment device; 5, inner ring; 6, outer ring; 7, fixed edge; 8, lens; 9, convex edge; 10, fixed cover; 11, fixed block; 12, guide groove; 13, sealing groove; 14, threaded screw; 15, mounting block; 16, first adjustment gear; 17, second adjustment gear; 18, guide rod; 19, slider; 20, protective cover; 21, rotating handle; 22, sealing cover; 23, groove; DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 A lens assembly of the present invention comprises a lens body 1, wherein the lens body 1 comprises a lens barrel 2 and an adjustment barrel 3, a locking piece is installed at the rear end of the adjustment barrel 3, and the locking piece is used to assemble the lens body 1 with a camera, a telescopic adjustment assembly and an aperture adjustment device 4 are installed inside the adjustment barrel 3, and the aperture adjustment device 4 is located at the rear end of the telescopic adjustment assembly and at the front end of the locking piece, a lens 8 is arranged inside the lens barrel 2, and the aperture adjustment device 4 is used to adjust the light transmittance of the lens 8, a groove 23 is provided at the top of the rear end of the lens barrel 2, a slider 19 is fixedly installed in the groove 23, and the slider 19 is slidably connected to the telescopic adjustment assembly, and the telescopic adjustment assembly is used to drive the slider 19 to move forward and backward.

[0025] After the device is used for a long time, the lens 8 in the lens barrel 2 is inevitably contaminated with dust. At this time, the lens 8 needs to be disassembled from the lens barrel 2 for cleaning. The preferred scheme in this embodiment is that a mounting groove is provided on the front side of the lens barrel 2, and a fixing cover 10 is installed in the mounting groove. A fixing edge 7 is provided on the inner wall of the mounting groove, and a limiting groove is provided on the fixing edge 7. A convex edge 9 is provided around the outer side of the lens 8, and a fixing block 11 is provided around the rear end of the convex edge 9. The fixing block 11 is adapted to the limiting groove, and a limiting edge is provided at the inner end of the fixing cover 10. The fixing cover 10 is installed in the mounting groove through a threaded structure, and the limiting edge is fitted with the front end of the convex edge 9. According to the above structure, when the lens 8 is removed from the lens barrel 2, the fixing cover 10 is twisted to take the fixing cover 10 out of the mounting groove, and then the lens 8 can be taken out of the mounting groove. When the lens 8 is installed in the mounting groove, it is limited by the connection between the fixing block 11 and the limiting groove. When the lens 8 is removed, it is also convenient to clean the inner wall of the lens barrel 2.

[0026] When the lens body 1 is not in use, the lens 8 in the lens barrel 2 needs to be sealed to prevent the lens 8 from being easily contaminated by dust or being scratched. The preferred scheme in this embodiment is that a sealing groove 13 is provided at the front end of the fixed cover 10, and a sealing cover 22 is installed in the sealing groove 13. The sealing cover 22 is connected to the sealing groove 13 through a threaded structure, and a rotating handle 21 is provided at the front end of the sealing cover 22. Arc grooves 23 are provided on both sides of the rotating handle 21. The sealing groove 13 of the fixed cover 10 is blocked by configuring the sealing cover 22, so as to protect the lens 8. When the sealing cover 22 is installed, a rotating handle with an arc groove 23 structure is used to facilitate the application of force to the sealing cover 22.

[0027] When adjusting the depth of field of the camera, the device needs to control the telescopic adjustment component to control the telescopic movement of the lens barrel 2 in the adjustment barrel 3, so it is necessary to ensure the use effect of the telescopic adjustment component. The preferred scheme in this embodiment is that the telescopic adjustment component includes a threaded screw 14, a first adjustment gear 16 and a second adjustment gear 17. Mounting blocks 15 are provided at both ends of the inner wall of the adjustment barrel 3. Both ends of the threaded screw 14 are connected to the mounting blocks 15 through bearings. The first adjustment gear 16 is fixedly mounted on the tail end of the threaded screw 14. An adjustment port is provided on the adjustment barrel 3. The second adjustment gear 17 is mounted on the adjustment barrel 3 through a bearing. The first adjusting gear 16 and the second adjusting gear 17 are meshed, and the slider 19 is sleeved on the threaded screw 14 through a threaded structure. According to the above structure, the second adjusting gear 17 on the adjustment port is manually rotated, and the rotation of the second adjusting gear 17 drives the threaded screw 14 to rotate through the first adjusting gear 16. When the second adjusting gear 17 rotates clockwise, the first adjusting gear 16 and the threaded screw 14 rotate counterclockwise, and the lens barrel 2 moves toward the outside of the adjustment barrel 3 under the cooperation of the slider 19 and the threaded screw 14, otherwise the lens barrel 2 shrinks into the adjustment barrel 3.

[0028] When the second adjusting gear 17 in the device is installed on the adjusting port, it will be exposed on the outside of the adjusting cylinder 3. At this time, the installation of the second adjusting gear 17 is easily damaged, and a protective device is required to protect the second adjusting gear 17. The preferred structure in this embodiment is that a protective cover 20 is installed on the adjusting port through a bolt structure, and an opening is provided on the protective cover 20. The protective cover 20 covers the top of the second adjusting gear 17, and the second adjusting gear 17 protrudes from the opening.

[0029] When the lens barrel 2 in the present device telescopes and slides in the adjusting barrel 3, it is necessary to ensure the stability of the lens when installed in the adjusting barrel 3. The preferred solution in this embodiment is that a guide groove 12 is provided around the rear end of the lens barrel 2, and a guide rod 18 is provided around the inner wall of the adjusting barrel 3, and the guide rod 18 is slidably connected to the guide groove 12.

[0030] The lens body 1 is assembled and disassembled on the camera's bayonet through a locking piece, so it is necessary to ensure that the lens body 1 is easy to disassemble and assemble when the locking piece is in use. The preferred scheme in this embodiment is that the locking piece includes an inner ring 5 and an outer ring 6, and a plurality of fixing holes are arranged around the inner ring 5. A surrounding groove is arranged on the outer side of the adjusting tube 3, one end of the outer ring 6 is embedded in the surrounding groove, and the outer ring 6 is rotatably installed on the surrounding groove, and the other end of the outer ring 6 is connected to the inner ring 5 through a threaded structure. According to the above structure, the inner ring 5 is installed on the camera's bayonet by passing through the fixing hole with a conventional bolt structure, and then the outer ring 6 is sleeved on the outer side of the inner ring 5 and manually rotated forward or reversely, so that the lens body 1 can be assembled and disassembled on the camera's bayonet.

[0031] In summary, during the use of the lens assembly, the lens body 1 can be disassembled and assembled on the camera's bayonet through the locking piece of the above structure. After the lens body 1 is disassembled from the camera's bayonet, the inner wall of the adjustment tube 3 can be cleaned, and the fixed cover 10 can be twisted to remove the fixed cover 10 from the installation groove. After that, the lens 8 can be taken out from the installation groove and cleaned. When the lens 8 is installed in the installation groove, it is limited by the connection between the fixed block 11 and the limiting groove. When the lens 8 is removed, it is also convenient to clean the inner wall of the lens tube 2. When adjusting the depth of field of the camera, the telescopic adjustment group The component controls the extension and retraction of the lens barrel 2 in the adjustment barrel 3, and the second adjusting gear 17 on the adjustment port is manually rotated. The rotation of the second adjusting gear 17 drives the threaded screw 14 to rotate through the first adjusting gear 16. When the second adjusting gear 17 rotates clockwise, the first adjusting gear 16 and the threaded screw 14 rotate counterclockwise, and the lens barrel 2 moves toward the outside of the adjustment barrel 3 under the cooperation of the slider 19 and the threaded screw 14. Otherwise, the lens barrel 2 shrinks into the adjustment barrel 3. The aperture adjustment device 4 in the present invention can adopt the conventional aperture adjustment device 4 structure in the camera field.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lens assembly, characterized in that: The invention comprises a lens body (1), wherein the lens body (1) comprises a lens barrel (2) and an adjustment barrel (3), wherein a locking member is installed at the rear end of the adjustment barrel (3), and the locking member is used to assemble the lens body (1) with a camera, wherein a telescopic adjustment component and an aperture adjustment device (4) are installed inside the adjustment barrel (3), wherein the aperture adjustment device (4) is located at the rear end of the telescopic adjustment component and at the front end of the locking member, wherein a lens (8) is arranged inside the lens barrel (2), and the aperture adjustment device (4) is used to adjust the light transmittance of the lens (8), wherein a groove (23) is arranged at the top of the rear end of the lens barrel (2), and a slider (19) is fixedly installed inside the groove (23), wherein the slider (19) is slidably connected to the telescopic adjustment component, and wherein the telescopic adjustment component is used to drive the slider (19) to move forward and backward.

2. A lens assembly according to claim 1, characterized in that: The front side of the lens barrel (2) is provided with a mounting groove, a fixed cover (10) is installed in the mounting groove, a fixed edge (7) is provided on the inner wall of the mounting groove, a limiting groove is provided on the fixed edge (7), a convex edge (9) is provided around the outer side of the lens (8), a fixed block (11) is provided around the rear end of the convex edge (9), the fixed block (11) is adapted to the limiting groove, a limiting edge is provided at the inner end of the fixed cover (10), the fixed cover (10) is installed in the mounting groove through a threaded structure, and the limiting edge is in contact with the front end of the convex edge (9).

3. A lens assembly according to claim 2, characterized in that: The front end of the fixed cover (10) is provided with a sealing groove (13), a sealing cover (22) is installed in the sealing groove (13), the sealing cover (22) is connected to the sealing groove (13) via a threaded structure, and a rotating handle (21) is provided at the front end of the sealing cover (22).

4. A lens assembly according to claim 3, characterized in that: Arc-shaped grooves are provided on both sides of the rotating handle (21).

5. A lens assembly according to claim 4, characterized in that: The telescopic adjustment assembly comprises a threaded screw (14), a first adjustment gear (16) and a second adjustment gear (17); mounting blocks (15) are provided at both ends of the inner wall of the adjustment cylinder (3); both ends of the threaded screw (14) are connected to the mounting blocks (15) through bearings; the first adjustment gear (16) is fixedly mounted on the tail end of the threaded screw (14); an adjustment port is provided on the adjustment cylinder (3); the second adjustment gear (17) is mounted on the adjustment port through a bearing; the first adjustment gear (16) is meshed with the second adjustment gear (17); and the slider (19) is sleeved on the threaded screw (14) through a threaded structure.

6. A lens assembly according to claim 5, characterized in that: A protective cover (20) is installed on the adjustment port via a bolt structure, and an opening is provided on the protective cover (20). The protective cover (20) covers the top of the second adjustment gear (17), and the second adjustment gear (17) protrudes from the opening.

7. A lens assembly according to claim 6, characterized in that: A guide groove (12) is arranged around the rear end of the lens tube (2), and a guide rod (18) is arranged around the inner wall of the adjustment tube (3), and the guide rod (18) is slidably connected to the guide groove (12).

8. A lens assembly according to claim 7, characterized in that: The locking member comprises an inner ring (5) and an outer ring (6); the inner ring (5) is provided with a plurality of fixing holes; the outer side of the adjusting cylinder (3) is provided with a surrounding groove; one end of the outer ring (6) is embedded in the surrounding groove, and the outer ring (6) is rotatably mounted on the surrounding groove; the other end of the outer ring (6) is connected to the inner ring (5) via a threaded structure.

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