Filter system and image pickup apparatus

Abstract

The utility model discloses a filter system and a camera device. The filter system comprises an adapter ring and a first filter assembly. The adapter ring is provided with elastic limiting mechanisms, the elastic limiting mechanisms are distributed in the circumferential direction of the adapter ring, and the first filter assembly can be installed on the inner side of the adapter ring through the elastic limiting mechanisms; the first filter assembly comprises a first filter and a first filter ring, and the first filter is mounted on the inner side of the first filter ring; a limiting piece is arranged on the inner side of the adapter ring, and when the first filter assembly and the adapter ring are assembled, the limiting piece is arranged between the first filter ring and the adapter ring. The problems that mounting and dismounting between the adapter ring and the filter are not changed, and the filter easily floats in the adapter ring are solved.

Description

Technical Field

[0001] This utility model relates to the field of camera equipment technology, and in particular to a filter system and camera device. Background Technology

[0002] A camera filter is an additional lens mounted in front of a camera lens to filter natural light. With the rapid development of photography technology, people's demands for the image quality of photographic works are increasing. To achieve the best shooting effect, a filter is usually placed in front of the lens of the shooting device. Filters create special shooting effects by filtering out some light or eliminating reflections on the surface of objects. Different types of filters can be changed according to actual needs to achieve the desired photographic purpose.

[0003] For example, DSLR cameras often use filters to change the color temperature of the light source, alter the color of the subject, or reduce light and eliminate reflections during shooting; some filters can also be added to mobile phone cameras to enhance the phone's photo-taking effect.

[0004] Currently, filters are generally mounted on the front of the lens, and adapter rings are one of the most common filter mounting methods. There are two types of adapter ring connections. The first type involves fixing the adapter ring to the lens first, and then screwing the filter onto the adapter ring. This method cannot accommodate multiple different types of filters simultaneously, or the installation is extremely inconvenient. The second type involves directly fixing the integrated filter and adapter ring to the lens. This method has the advantage of making it easy to install and remove filters from the lens, but it suffers from the problem of inconvenience when changing filters using the adapter ring. Utility Model Content

[0005] This invention provides a filter system that solves the problems of inconsistency in the installation and disassembly of the adapter ring and the filter, as well as the problem of the filter floating within the adapter ring.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a filter system, including an adapter ring and a first filter assembly;

[0007] The adapter ring is provided with an elastic limiting mechanism, which is distributed circumferentially along the adapter ring. The elastic limiting mechanism includes an elastic element and a limiting head. One end of the elastic element is elastically connected to the limiting head, and the other end faces the inside of the adapter ring.

[0008] The first filter assembly includes a first filter element and a first filter ring, wherein the first filter element is mounted inside the first filter ring; the first filter assembly abuts against the elastic limiting mechanism to be mounted inside the adapter ring;

[0009] The filter system further comprises an elastically deformable limiting member, when the first filter assembly is assembled with the adapter ring, the limiting member is arranged between the first filter ring and the adapter ring, and the first filter ring and the adapter ring are in interference fit through the limiting member.

[0010] Optionally, the first filter ring comprises a clamping portion arranged along one side of the first filter ring, the clamping portion is provided with a first clamping groove abutting against the limiting head;

[0011] The limiting member is arranged on the opposite sides of the first clamping groove, so that the clamping portion and the inner side of the adapter ring are in interference fit through the limiting member.

[0012] Optionally, the first filter ring comprises a clamping portion arranged along one side of the first filter ring;

[0013] One side of the limiting member is arranged on the outer surface of the clamping portion, and the other side of the limiting member is provided with a second clamping groove for abutting against the limiting head, so that the limiting member and the clamping portion, and the limiting member and the adapter ring are in interference fit.

[0014] Optionally, the clamping portion is provided with a third clamping groove, and the position of the third clamping groove is opposite to the position of the second clamping groove.

[0015] Optionally, the first filter ring comprises a clamping portion arranged along one side of the first filter ring, the clamping portion is provided with a clamping groove abutting against the limiting head;

[0016] The limiting member is at least a part of the clamping portion and is located on the side abutting against the limiting head.

[0017] Optionally, the limiting member is a rubber ring.

[0018] Optionally, the limiting member is a plurality of rubber strips distributed circumferentially along the first filter ring.

[0019] Optionally, the first filter ring is provided with a plurality of elastic limiting mechanisms distributed circumferentially along the first filter ring on the other side opposite to the adapter ring; the elastic limiting mechanism comprises an elastic member and a limiting head, one end of the elastic member is elastically connected with the limiting head, and the other end faces the inner side of the adapter ring.

[0020] Optionally, the filter system comprises at least one second filter assembly;

[0021] The second filter assembly and the first filter assembly, and the second filter assembly and the second filter assembly are connected through the elastic limiting mechanism.

[0022] The utility model also provides a kind of camera equipment, including imaging device and filter system being installed on the imaging device, the filter system includes adapter ring and first filter assembly;

[0023] The adapter ring is provided with an elastic limiting mechanism, which is distributed circumferentially along the adapter ring;The elastic limiting mechanism includes an elastic member and a limiting head, and one end of the elastic member is elastically connected with the limiting head, and the other end is directed towards the inside of the adapter ring;

[0024] The first filter assembly includes a first filter and a first filter ring, and the first filter is installed inside the first filter ring;The first filter assembly abuts against the elastic limiting mechanism to be installed inside the adapter ring;

[0025] The filter system further includes an elastically deformable limiting member, which is arranged between the first filter ring and the adapter ring when the first filter assembly is assembled with the adapter ring, and the first filter ring and the adapter ring are interference-fitted through the limiting member.

[0026] The utility model discloses a filter system, a plurality of different kinds of filters in the system can be fixed through the adapter ring, a single filter or a plurality of different kinds of filters can also be fixed on the lens through the adapter ring, and the utility model has the advantages of convenient installation and disassembly;The utility model sets up rubber ring in adapter ring, uses the elasticity of rubber ring itself to limit the filter installed in adapter ring, prevents filter from floating in adapter ring, and increases the stability of filter system;The utility model is used by attaching filter to adapter ring, which can greatly reduce the size of filter, reduce the manufacturing cost of filter, and is convenient to carry;The filter support, adapter ring elastic member and limiting head of the utility model and other structures are detachably connected, which is convenient to replace filter and difficult to damage filter and adapter ring. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a visual schematic diagram of the adapter ring inside the embodiment 1 of the utility model;

[0028] Figure 2 It is a visual schematic diagram of the adapter ring inside the embodiment 1 of the utility model;

[0029] Figure 3 It is a visual schematic diagram of the elastic limiting mechanism in the embodiment 2 of the utility model;

[0030] Figure 4 It is a sectional view of the elastic limiting mechanism in the embodiment 2 of the utility model;

[0031] Figure 5 It is a visual filter system schematic diagram in the embodiment 3 of the utility model.

[0032] The names of the corresponding components represented by the numbers or letters in the figure or the names of the processes: 1. adapter ring; 2. first filter assembly; 21. first filter lens; 22. first filter ring; 3. elastic limiting mechanism; 31. elastic member; 32. limiting head; 33. housing; 331. opening; 4. limiting member; 5. second filter assembly; 51. second filter ring; 52. second filter lens.

[0033] The accompanying drawings are only used for illustrative description and cannot be understood as a limitation of the patent; in order to better illustrate the embodiments, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; it is understandable that some well-known structures in the drawings and their descriptions may be omitted for those skilled in the art; the same or similar reference numerals correspond to the same or similar components; the terms used in the drawings to describe the positional relationship are only used for illustrative description and cannot be understood as a limitation of the patent. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0035] The camera filter is an additional lens installed in front of the camera lens to filter natural light. With the rapid development of photography technology, people's requirements for the image effect of photographic works are increasing. In order to achieve the best shooting effect, a filter is usually set at the front end of the lens of the shooting device. The filter creates a special shooting effect by filtering out part of the light or eliminating the reflection of the object surface. Different types of filters can be replaced according to actual needs to achieve the purpose of taking pictures.

[0036] For example, in order to change the color temperature of the light source during shooting, change the color of the subject, or weaken the light and eliminate the reflection, a filter is usually installed in front of the lens of a single-lens reflex camera; some filters can also be installed on the camera of a mobile phone to enhance the shooting effect of the mobile phone.

[0037] At present, the filter is usually installed at the front end of the lens, and the adapter ring connection method is one of the common filter installation methods. The adapter ring connection method is divided into two types. The first type is to fix the adapter ring on the lens first, and then screw the filter on the adapter ring. It is not possible to install multiple different types of filters at the same time, or it is extremely inconvenient to install. The second type is to fix the integrated filter and adapter ring on the lens. It has the advantage of convenient installation and removal of the filter on the lens, but has the problem of inconvenience in replacing the filter on the adapter ring.

[0038] Embodiment 1:

[0039] In order to solve the above problems, the embodiment provides a filter system, which comprises an adapter ring 1 and a first filter assembly 2. In actual application, the adapter ring 1 is screwed on the lens of a camera, and the connection mode of the adapter ring 1 and the camera lens can also be clamping or bonding, which can be designed according to actual needs, and is not limited here.

[0040] In the embodiment, the first filter assembly 2 needs to be installed on the lens of the camera through the adapter ring 1. The adapter ring 1 is provided with elastic limiting mechanisms 3 which are distributed circumferentially along the adapter ring 1. As preferred, the elastic limiting mechanisms 3 are uniformly distributed axially along the adapter ring 1, and the first filter assembly 2 can be clamped on the inner side of the adapter ring 1 through the elastic limiting mechanisms 3.

[0041] In the description of the embodiment, the first filter assembly 2 comprises a first filter disc 21 and a first filter ring 22, the first filter disc 21 is installed on the inner side of the first filter ring 22, the first filter ring 22 plays a role of a bracket for the first filter disc 21, and the detachable connection between the first filter disc 21 and the lens of the camera is realized through the connection design between the first filter ring 22 and the adapter ring 1.

[0042] The first filter ring 22 is fixed in the adapter ring 1 through the elastic limiting mechanisms 3. Since the elastic limiting mechanisms 3 in the embodiment are made of hard material, the elastic limiting mechanisms 3 limit the first filter ring 22 in the adapter ring 1, and the first filter ring 22 is prone to floating in the adapter ring 1, which affects the stability of the filter system.

[0043] In order to avoid the floating of the first filter ring 22 in the adapter ring 1, the inner side of the adapter ring 1 is provided with a limiting piece 4 in the embodiment, and the limiting piece 4 is arranged between the first filter ring 22 and the adapter ring 1 when the first filter assembly 2 is assembled with the adapter ring 1.

[0044] In an embodiment, the limiting piece 4 is an elastic rubber ring. For example, the elastic rubber ring can be a rubber ring, which can limit the first filter ring 22 based on its own elasticity, so as to avoid the floating of the first filter ring 22 in the adapter ring 1, thereby improving the stability of the filter system.

[0045] In an embodiment, the limiting piece 4 can also be a plurality of rubber strips which are distributed circumferentially along the first filter ring, and can have the same limiting effect. The material and shape of the limiting piece 4 are not limited here, and it is only required that the limiting piece 4 can limit the first filter ring 22 from floating in the adapter ring 1.

[0046] The embodiment provides a filter system, different filters can be fixed through an adapter ring 1, a single filter or different filters can be fixed on a lens through the adapter ring 1, and the filter system has the advantages of convenient installation and disassembly; the filter system provided by the embodiment prevents the filter from floating in the adapter ring 1 by arranging an elastic rubber ring in the adapter ring 1 and utilizing the elasticity of the elastic rubber ring to limit the first filter ring 22 arranged in the adapter ring 1, and the stability of the filter system is improved; the filter system provided by the embodiment is used by attaching the filter to the adapter ring 1, the size of the filter can be greatly reduced, the manufacturing cost of the filter is reduced, and the filter is convenient to carry; the filter support and the adapter ring 1 of the filter system are detachably connected through structures such as elastic sheets or top bead springs, the filter is convenient to replace, and the filter and the adapter ring 1 are not easy to be damaged.

[0047] Embodiment 2

[0048] The embodiment provides a filter system, an elastic limiting mechanism 3 includes an elastic piece 31 and a limiting head 32, one end of the elastic piece 31 is connected with the limiting head 32, and the other end is abutted against the inner side of the adapter ring 1.

[0049] In the embodiment, when the adapter ring 1 and the first filter ring 22 are assembled, the first filter ring 22 is pressed to make the elastic piece 31 in a compressed state, so that enough space is provided for the first filter ring 22 to be assembled into the adapter ring 1, after the first filter ring 22 is assembled into the adapter ring 1, the elastic piece 31 makes the limiting head 32 pop up to limit the first filter ring 22, so that the first filter ring 22 is prevented from falling off the adapter ring 1, and the assembly of the adapter ring 1 and the first filter ring 22 is completed.

[0050] In further description of the embodiment, the elastic limiting mechanism 3 further includes a shell 33, one end of the shell 33 is provided with an opening 331, the opening 331 is directed to the center of the adapter ring 1, one end of the elastic piece 31 is abutted against the inner side of the shell 33, and the other end is connected with the limiting head 32.

[0051] In the embodiment, the limiting head 32 is arranged in the shell 33, one end of the limiting head 32 is connected with the elastic piece 31, and the other end extends out of the opening 331. When the adapter ring 1 and the first filter ring 22 are assembled, the first filter ring 22 is pressed into the shell 33 to make the limiting head 32, after the adapter ring 1 and the first filter ring 22 are assembled, the limiting head 32 extends out of the opening 331 under the action of the elastic force of the elastic piece 31, and the first filter ring 22 is limited.

[0052] As further description of the embodiment, since the maximum diameter of the limiting head 32 is smaller than the diameter of the opening 331, the limiting head 32 can only partially extend out of the opening 331 and cannot completely extend out of the opening 331.

[0053] In an embodiment, the limiting head 32 is preferably spherical in shape.

[0054] When the first filter ring 22 needs to be removed from the adapter ring 1, the elastic limiting mechanism 3 at the corresponding force receiving position is simply pressed radially to retract the limiting head 32 into the housing 33, thereby creating space for the first filter ring 22 to be removed.

[0055] The present embodiment achieves easy disassembly between the adapter ring 1 and the filter ring through the design of the elastic limiting mechanism 3, greatly facilitating the user in installing and dismounting the filter.

[0056] Embodiment 3:

[0057] The present embodiment provides a filter system, the first filter ring 22 is provided with a plurality of elastic limiting mechanisms 3 distributed circumferentially along the first filter ring 22, and the inner side of the first filter ring 22 is provided with a limiting member 4. That is, the first filter ring 22 is provided with the same elastic limiting mechanism 3 as the adapter ring 1, which is used to connect another filter ring.

[0058] In the present embodiment, the filter system can further include a second filter assembly 5, the second filter assembly 5 includes a second filter ring 51 and a second filter piece 52, the second filter ring 51 is provided with a plurality of elastic limiting mechanisms 3 distributed circumferentially along the second filter ring 51, and the inner side of the second filter ring 51 is provided with a limiting member 4.

[0059] In an embodiment, the first filter piece 21 is an adjustable ND filter, i.e., it includes two or more pieces of lenses, and the second filter piece 52 is a single-lens filter, which can be a UV lens, a CPL lens, etc.

[0060] The filter system provided by the present embodiment can continue to stack various filters according to needs, and the front and rear stacking positions of the filters can be randomly interchanged.

[0061] Embodiment 4:

[0062] The embodiment provides a camera device which can be a digital camera, a mobile phone, a monitoring device or other device with a photographing and camera shooting function, the camera device comprising an image sensor such as a CMOS or a CCD, and a filter system provided by any one of the above embodiments, comprising an adapter ring 1 and a first filter assembly 2; the adapter ring 1 is provided with an elastic limiting mechanism 3 which is distributed along the circumference of the adapter ring 1, and the first filter assembly 2 can be installed on the inner side of the adapter ring 1 through the elastic limiting mechanism 3; the first filter assembly 2 comprises a first filter disc 21 and a first filter ring 22, and the first filter disc 21 is installed on the inner side of the first filter ring 22; the inner side of the adapter ring 1 is provided with a limiting piece 4 which is arranged between the first filter ring 22 and the adapter ring 1 when the first filter assembly 2 is assembled with the adapter ring 1. In addition, the camera device can further comprise a control circuit, a battery and other components, and the components included in the camera device can be designed according to actual conditions, which is not limited in the application.

[0063] In the drawings of the embodiments of the present application, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that, if the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms used to describe the positional relationships in the drawings are only used for exemplary description, and cannot be understood as a limitation on the present patent. In addition, if the terms “first”, “second” and the like are used only for the purpose of description, mainly for distinguishing different devices, elements or components (the specific types and structures can be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying the relative importance.

[0064] In the present application, unless otherwise explicitly specified and limited, the terms “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0065] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A filter system characterized by: The adapter ring and the first filter assembly are provided; The adapter ring is provided with elastic limiting mechanisms which are distributed circumferentially along the adapter ring; the elastic limiting mechanisms comprise elastic members and limiting heads, one end of the elastic member is elastically connected with the limiting head, and the other end is directed towards the inside of the adapter ring; The first filter assembly comprises a first filter disc and a first filter ring, the first filter disc is installed on the inside of the first filter ring; the first filter assembly is in abutment with the elastic limiting mechanisms to be installed on the inside of the adapter ring; The filter system further comprises a limiting member which can elastically deform, when the first filter assembly is assembled with the adapter ring, the limiting member is arranged between the first filter ring and the adapter ring, and the first filter ring and the adapter ring are in interference fit through the limiting member.

2. The filter system of claim 1, wherein: The first filter ring comprises a clamping portion which is arranged along one side of the first filter ring, the clamping portion is provided with a first clamping groove which is in abutment with the limiting head; The limiting member is arranged on the opposite sides of the first clamping groove, so that the clamping portion is in interference fit with the inside of the adapter ring through the limiting member.

3. The filter system of claim 1, wherein: The first filter ring comprises a clamping portion which is arranged along one side of the first filter ring; One side of the limiting member is arranged on the outer surface of the clamping portion, the other side of the limiting member is provided with a second clamping groove which is in abutment with the limiting head, so that the limiting member and the clamping portion, and the limiting member and the adapter ring are in interference fit.

4. The filter system of claim 3, wherein: The clamping portion is provided with a third clamping groove, the position of the third clamping groove is opposite to the position of the second clamping groove.

5. The filter system of claim 1, wherein: The first filter ring comprises a clamping portion which is arranged along one side of the first filter ring, the clamping portion is provided with a clamping groove which is in abutment with the limiting head; The limiting member is at least a part of the clamping portion and is located on the side in abutment with the limiting head.

6. The filter system of claim 1, wherein: The limiting member is a rubber ring.

7. The filter system of claim 1, wherein: The limiting member is a plurality of rubber strips which are distributed circumferentially along the first filter ring.

8. The filter system of any of claims 1-4, wherein: The first filter ring is provided with a plurality of elastic limiting mechanisms which are distributed circumferentially along the first filter ring on the other side opposite to the adapter ring.

9. The filter system of claim 8, wherein: The filter system comprises at least one second filter assembly; The second filter assembly and the first filter assembly, and the second filter assembly and the second filter assembly are connected through the elastic limiting mechanisms.

10. An image pickup apparatus characterized by comprising: The imaging device and the filter system installed on the imaging device are provided, the filter system comprises an adapter ring and a first filter assembly; The adapter ring is provided with elastic limiting mechanisms which are distributed circumferentially along the adapter ring; the elastic limiting mechanisms comprise elastic members and limiting heads, one end of the elastic member is elastically connected with the limiting head, and the other end is directed towards the inside of the adapter ring; The first filter assembly comprises a first filter disc and a first filter ring, the first filter disc is installed on the inside of the first filter ring; the first filter assembly is in abutment with the elastic limiting mechanisms to be installed on the inside of the adapter ring; The filter system further comprises an elastically deformable limiting member, when the first filter assembly is assembled with the adapter ring, the limiting member is arranged between the first filter ring and the adapter ring, and the first filter ring and the adapter ring are in interference fit through the limiting member.

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