A filter assembly

Abstract

The present application relates to a kind of filter assemblies, comprising: mirror frame, first lens group, second lens group, third lens group, fourth lens group.By the systematic division of filter of multiple function types into three categories, the first filter can change light effect by rotating itself, the first filter is connected with the mirror frame as the first lens group, and the change of light effect is realized by the rotation of the first lens group relative to the mirror frame;The second filter changes the light effect by the relative rotation of two filters or synchronous rotation following the first filter;The third filter does not change the light effect no matter what form of rotation, and the third filter is set as the fourth lens group on the side of the third lens group away from the mirror frame.By the above organic combination, the user can set the filter in the corresponding position according to the classification of lens group to realize different operation combinations, and the functional characteristics of most filters can be played, so as to reduce the use threshold of filter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filters, in particular to a filter assembly. BACKGROUND

[0002] In the process of photography and photography, filters are added in front of the lens to obtain better shooting effects. With the increasing demand of users for shooting effects, the types of filters are also increasing. In order to enrich the use mode of filters, the prior art increases the structure that enables a single filter to rotate or enables two filters to relatively rotate on the frame of the filter. For example, the prior application of the applicant: Chinese invention patent, patent number CN111458959A, discloses a filter mounting structure, wherein the first frame can rotate or be locked relative to the frame, and the second frame can rotate relative to the first frame. However, the use mode of the filter is more abundant, and the types of the filter are more abundant, but the user faces too many choices, which is not systematic, and relies too much on the user's own experience to match and combine, which undoubtedly increases the entry threshold for new users. Therefore, it is necessary to provide a filter assembly to systematically integrate the use characteristics of most types of filters and organically match different functional structures for different types of filters to reduce the use threshold of users. SUMMARY

[0003] The purpose of the present application is to provide a filter assembly to systematically integrate the use characteristics of most types of filters and organically match different functional structures for different types of filters to reduce the use threshold of users.

[0004] According to one aspect of the present application, a filter assembly is provided, comprising:

[0005] A frame, a first through hole is formed in the middle part, and the center axis direction of the first through hole is referred to as the first axial direction;

[0006] A first mirror group is connected to the frame and can rotate around the first axial direction, and the first mirror group can change the light effect by rotating around the first axial direction when the light passes through the first mirror group;

[0007] A second mirror group is arranged on the side of the first mirror group away from the frame;

[0008] A third mirror group is arranged on the side of the second mirror group away from the frame, and the third mirror group can rotate around the first axial direction relative to the second mirror group, and the second mirror group and the third mirror group can change the light effect by relative rotation when the light passes through the third mirror group and the second mirror group in sequence;

[0009] The second mirror group and the third mirror group can synchronously follow the rotation of the first mirror group, and the second mirror group and the third mirror group can change the light effect by synchronously following the rotation of the first mirror group when the light passes through the third mirror group and the second mirror group in turn.

[0010] More preferably, the first mirror group is a combination of one or more of a gradient filter, a starlight filter, and a lens flares filter.

[0011] More preferably, the second mirror group is a polarized filter, and the third mirror group is a polarized filter.

[0012] More preferably, the filter assembly further comprises:

[0013] A fourth mirror group is arranged on a side of the third mirror group away from the frame, and the fourth mirror group has the same light effect when the light passes through the fourth mirror group when the fourth mirror group is rotated to any different position around the first axis.

[0014] More preferably, the fourth mirror group is a combination of one or more of a light reduction filter, a soft light filter, a protective mirror, a wideband filter, a narrowband filter, and a light pollution filter.

[0015] More preferably, the frame is provided with a rotating member capable of rotating around the first axis and a locking member limiting the rotation of the rotating member.

[0016] More preferably, in the first axis, the first mirror group and the rotating member are connected by magnetic adsorption;

[0017] and a side of the rotating member facing the first mirror group is provided with a first limiting groove, and a side of the first mirror group facing the rotating member is provided with a first limiting protrusion matched with the first limiting groove;

[0018] The first limiting groove and the first limiting protrusion are matched to limit the relative rotation of the first mirror group and the rotating member.

[0019] More preferably, in the first axis, the second mirror group and the first mirror group are connected by magnetic adsorption;

[0020] A side of the first mirror group facing the second mirror group is provided with a second limiting groove, and a side of the second mirror group facing the first mirror group is provided with a second limiting protrusion;

[0021] The second limiting groove and the second limiting protrusion are matched to limit the relative rotation of the first mirror group and the second mirror group.

[0022] More preferably, in the first axis, the second mirror group and the third mirror group are connected by magnetic adsorption;

[0023] The third limiting groove is arranged on the surface of the second mirror group facing the third mirror group, and the third limiting protrusion is arranged on the surface of the third mirror group facing the second mirror group, so that the third limiting groove and the third limiting protrusion are matched to limit the angle of relative rotation of the second mirror group and the third mirror group.

[0024] More preferably, in the first axial direction, the third mirror group and the fourth mirror group are connected by magnetic adsorption.

[0025] The direction of rotation around the first axial direction is recorded as a first circumferential direction, the size of the third limiting groove extending along the first circumferential direction is recorded as T1, and the size of the third limiting protrusion extending along the first circumferential direction is recorded as T2, satisfying the relationship:

[0026] T1>T2.

[0027] The present application has the following beneficial effects:

[0028] By systematically classifying the filters of multiple functional types into three categories, the first category of filters can change the light effect by rotating itself, the first category of filters is connected to the frame as a first mirror group, and the change of the light effect is realized by rotating the first mirror group relative to the frame; the second category of filters changes the light effect by relative rotation or synchronous rotation of two filters, the second category of filters is sequentially arranged as a second mirror group and a third mirror group on the side of the first mirror group away from the frame; the third category of filters does not change the light effect regardless of the form of rotation, and the third category of filters is arranged as a fourth mirror group on the side of the third mirror group away from the frame. Through the above organic combination, the user can set the filters in the corresponding position according to the classification of the mirror group to realize different operation combinations, and the functional characteristics of most filters can be played, thereby reducing the use threshold of the filters. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0030] Figure 1 A perspective structural schematic view of the filter assembly according to an embodiment of the present application;

[0031] Figure 2 Another perspective structural schematic view of the filter assembly according to an embodiment of the present application;

[0032] Figure 3 An exploded structural schematic view of the filter assembly according to an embodiment of the present application;

[0033] Figure 4 Another exploded structural schematic view of the filter assembly according to an embodiment of the present application;

[0034] Figure 5 A front view of the filter assembly according to an embodiment of the present application;

[0035] Figure 6 A top view of the filter assembly according to an embodiment of the present application;

[0036] Figure 7 A perspective structural schematic view of the frame according to an embodiment of the present application;

[0037] Figure 8 A structural schematic view of the rotating member and the locking member according to an embodiment of the present application;

[0038] Figure 9 A top view of the second lens group according to an embodiment of the present application;

[0039] Figure 10 A bottom view of the third lens group according to an embodiment of the present application;

[0040] Figure 11 A perspective structural schematic view of the photographic filter assembly according to an embodiment of the present application;

[0041] BRIEF DESCRIPTION OF DRAWINGS 100, filter assembly; 10, frame; 11, first through hole; F1, first axial direction; 21, first lens group; 22, second lens group; 23, third lens group; 24, fourth lens group; 12, rotating member; 13, locking member; F2, first circumferential direction; 200, photographic filter assembly; 31, first photographic lens group; 32, second photographic lens group; 33, third photographic lens group; 34, fourth photographic lens group; 411, first limiting groove; 412, second limiting groove; 413, third limiting groove; 421, first limiting protrusion; 422, second limiting protrusion; 423, third limiting protrusion. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present application, a more comprehensive description of the present application will be given below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0043] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation purposes only.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] Reference will now be made to Figure 1 - Figure 10 An embodiment of the present application provides a filter assembly 100 for photography, the filter assembly comprising: a lens holder 10, a first lens group 21, a second lens group 22, a third lens group 23, and a fourth lens group 24.

[0046] The lens holder 10 has a first through hole 11 formed in a middle portion thereof, and a filter is arranged at a position corresponding to the first through hole 11. When taking a photograph, light passes through the first through hole 11 and reaches a photographing device. In the present embodiment, the central axis direction of the first through hole 11 is referred to as a first axial direction F1.

[0047] In the present embodiment, the first lens group 21 is connected to the lens holder 10 and can rotate about the first axial direction F1. The lens holder 10 is provided with a rotating member 12 that can rotate about the first axial direction F1 and a locking member 13 that limits the rotation of the rotating member 12. In the first axial direction F1, the first lens group 21 is connected to the rotating member 12 by magnetic attraction.

[0048] The direction of rotation about the first axial direction F1 is referred to as a first circumferential direction F2. In the first circumferential direction F2, the first lens group 21 is connected to the rotating member 12, so that when the locking member 13 releases the restriction on the rotating member 12, the rotating member 12 drives the first lens group 21 to rotate about the first axial direction F1.

[0049] In the present application, filters of various functional types are systematically classified into three categories. The first category of filters can change the light effect by rotating the filters themselves. The first category of filters is connected to the lens holder 10 as the first lens group 21, and the light effect is changed by rotating the first lens group 21 relative to the lens holder 10.

[0050] The first lens group 21 is a combination of one or more of a gradient filter, a starlight filter, and a pull filter. The starlight filter is also called a starburst filter. The above filters have the same characteristics. When light passes through any of the gradient filter, the starlight filter, and the pull filter, the light effect can be changed by rotating the filter. For example, during the photography process, the pull filter is installed. The light in the lens will be concentrated and extended along the linear direction under the light guide of the pull filter. When the pull filter is in the horizontal phase, the light is concentrated and extended along the vertical direction, forming a vertical light band. When the pull filter is rotated by 90°, the light is concentrated and extended along the horizontal direction, forming a horizontal light band. It can be understood that the angle of rotation of the pull filter is not limited to 90°. Thus, when the light passes through the first lens group 21, the first lens group 21 can change the light effect by rotating around the first axis F1.

[0051] The magnetic attraction between the first lens group 21 and the rotating member 12 can be achieved by providing a magnetic attraction member with magnetic pairing on the lens frame of the first lens group 21 or the rotating member 12, such as a rigid magnet, a magnetic strip, a magnetic block, or a flexible magnetic strip, magnetic glue, or magnetic tape. The entire or part of the lens frame or the rotating member 12 can also be made of a material with magnetism. In this embodiment, the magnetic attraction between the first lens group 21 and the rotating member 12 is achieved by providing a magnetic strip in the lens frame.

[0052] In order to realize the rotation of the rotating member 12 around the first axis F1, an annular guide rail can be provided on the lens holder 10, and the rotating member 12 is provided in a circular structure that slides with the annular guide rail. The rotating member 12 is rotated around the center of the annular guide rail, i.e., around the first axis F1. In this embodiment, one end of the rotating member 12 along the first axis F1 is connected to the first photography assembly, and the rotating member 12 is actuated by the user to control the rotation of the first lens group 21.

[0053] In order to make the first lens group 21 rotate with the rotating member 12, one side of the rotating member 12 facing the first lens group 21 is provided with a first limiting groove 411, and one side of the first lens group 21 facing the rotating member 12 is provided with a first limiting protrusion 421 cooperating with the first limiting groove 411. The first limiting groove 411 and the first limiting protrusion 421 cooperate to limit the relative rotation of the first lens group 21 and the rotating member 12, thereby making the first lens group 21 rotate with the rotating member 12.

[0054] In order to realize the locking of the rotating member 12 by the locking member 13, in the embodiment, the locking member 13 is screwed along the first axial direction F1 to increase the friction between the locking member 13 and the rotating member 12, so as to limit the rotation of the rotating member 12 relative to the frame 10. It can be understood that the locking member 13 can also be locked to the rotating member 12 in other ways, for example, the friction between the locking member 13 and the rotating member 12 is increased by braking in other directions, for example, the locking member 13 is arranged to be in contact with the inner and outer rings of the rotating member 12, so as to realize the locking of the rotating member 12 by clamping. The scheme of arranging a battery iron between the rotating member 12 and the locking member 13 can also be adopted, and the rotating member 12 is locked by strong electromagnetic force formed by power supply to limit the rotation of the rotating member 12.

[0055] In an embodiment, the second lens group 22 is arranged on the side of the first lens group 21 away from the frame 10, and the second lens group 22 is connected to the first lens group 21 by magnetic adsorption in the first axial direction F1, the third lens group 23 is connected to the second lens group 22 by magnetic adsorption, and the third lens group 23 is connected to the fourth lens group 24 by magnetic adsorption.

[0056] The side of the first lens group 21 facing the second lens group 22 is provided with a second limiting groove 412, and the side of the second lens group 22 facing the first lens group 21 is provided with a second limiting protrusion 422. The second limiting groove 412 cooperates with the second limiting protrusion 422 to limit the relative rotation of the first lens group 21 and the second lens group 22.

[0057] The side of the second lens group 22 facing the third lens group 23 is provided with a third limiting groove 413, and the side of the third lens group 23 facing the second lens group 22 is provided with a third limiting protrusion 423. The direction of rotation of the first axial direction F1 is called the first circumferential direction F2, the size of the third limiting groove 413 extending along the first circumferential direction F2 is called T1, and the size of the third limiting protrusion 423 extending along the first circumferential direction F2 is called T2, which satisfies the relationship:

[0058] T1>T2;

[0059] Therefore, the third limiting groove 413 cooperates with the third limiting protrusion 423 to limit the relative rotation angle of the second lens group 22 and the third lens group 23.

[0060] In the present application, by systematically classifying a plurality of filter systems of various functional types into three categories, the second type of filter changes the light effect by relative rotation of two filters, and the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10, and the change of the light effect is realized by rotating the second lens group 22 relative to the third lens group 23.

[0061] In the present application, by systematically classifying a plurality of filter systems of various functional types into three categories, the second type of filter changes the light effect by relative rotation of two filters, and the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10, and the change of the light effect is realized by rotating the second lens group 22 relative to the third lens group 23.

[0062] In the present application, by systematically classifying a plurality of filter systems of various functional types into three categories, the second type of filter changes the light effect by relative rotation of two filters, and the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10, and the change of the light effect is realized by rotating the second lens group 22 relative to the third lens group 23.

[0063] In the present application, by systematically classifying a plurality of filter systems of various functional types into three categories, the second type of filter changes the light effect by relative rotation of two filters, and the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10, and the change of the light effect is realized by rotating the second lens group 22 relative to the third lens group 23.

[0064] In the present application, by systematically classifying a plurality of filter systems of various functional types into three categories, the second type of filter changes the light effect by relative rotation of two filters, and the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10, and the change of the light effect is realized by rotating the second lens group 22 relative to the third lens group 23.

[0065] The fourth mirror group 24 is one or a combination of a light reduction filter, a soft light filter, a protective mirror, a wideband filter, a narrowband filter, and a light pollution filter.

[0066] The soft light mirror is also called a soft focus mirror, a hazy mirror, a dream mirror, a softening mirror, and the like. The most common wideband filter is a UV / IR CUT filter. The UV / IR CUT filter filters out ultraviolet light and infrared light in a one-size-fits-all manner and only allows visible light to pass through, which is captured by the camera. The LRGB filter used by a black-and-white camera can also be classified as a wideband filter. A UV filter is often used in daily photography because, in the film photography era, film is very sensitive to ultraviolet light, so a UV filter is usually added in front of the lens to prevent ultraviolet light from being taken in and affecting the photosensitivity. The light pollution filter is a filter made to block artificial light. Common light pollution filters include Lpro, UHC, and ClearSky filters from Yulong Optoelectronics, Astro Nightscape and Astro Multispectra from STC in Taiwan, and LPS P2 from IDAS in Japan. The narrowband filter is a filter that only allows specific wavelengths to pass through. The above filters have the same characteristics. When light passes through any of the light reduction filter, the soft light filter, the protective mirror, the wideband filter, the narrowband filter, and the light pollution filter, the light effect after the light passes through the fourth mirror group 24 will not change even if the filter is rotated. Therefore, when the fourth mirror group 24 is rotated to any different position around the first axis F1, the light effect after the light passes through the fourth mirror group 24 is the same.

[0067] The magnetic attraction between the fourth mirror group 24 and the third mirror group 23 can be achieved by providing a magnetic attraction member with magnetic pairing on the mirror frame of the fourth mirror group 24 or the mirror frame of the third mirror group 23, such as a rigid magnet, a magnetic strip, a magnetic block, or a flexible magnetic strip, magnetic glue, or a magnetic sticker. The entire or part of the mirror frame can also be made of a material with magnetism. In this embodiment, the magnetic attraction between the third mirror group 23 and the fourth mirror group 24 is achieved by providing a magnetic strip in the mirror frame.

[0068] Referring to Figure 11 The application also provides a photographic filter assembly 200.

[0069] The photographic filter assembly 200 and the filter assembly 100 can adopt the same lens holder 10 structure and mirror frame structure. The difference between them is the application scenario. The filter assembly 100 is used in dynamic or static photography, such as photography, videography, film shooting, video recording, and short video recording. The photographic filter assembly 200 is mainly used in static photography, such as photography.

[0070] The photographic filter assembly 200 includes a lens holder 10, a first photographic mirror group 31, a second photographic mirror group 32, a third photographic mirror group 33, and a fourth photographic mirror group 34.

[0071] The first photograph lens group 31 is a polarized filter, the fourth photograph lens group 34 is a polarized filter, the second photograph lens group 32 is a combination of one or more of a gradient filter, a starlight filter, and a lens flare filter, and the third photograph lens group 33 is a combination of one or more of a neutral density filter, a soft light filter, a protective filter, a wideband filter, a narrowband filter, and a light pollution filter.

[0072] In this way, by systematically classifying the filter into three categories according to the function type, the first type of filter can change the light effect by rotating itself, the first type of filter is connected to the lens holder 10 as the first lens group 21, and the light effect is changed by rotating the first lens group 21 relative to the lens holder 10; the second type of filter changes the light effect by rotating two filters relative to each other or following the rotation of the first type of filter, the second type of filter is sequentially arranged as the second lens group 22 and the third lens group 23 on the side of the first lens group 21 away from the lens holder 10; the third type of filter does not change the light effect regardless of the form of rotation, and the third type of filter is arranged as the fourth lens group 23 on the side of the third lens group 23 away from the lens holder 10. Through the above organic combination, the user can set the filters in the corresponding positions according to the classification of the lens groups to realize different operation combinations, and can exert the functional characteristics of most filters, thereby reducing the use threshold of the filters.

[0073] The above-described embodiments only express several embodiments of the present application, which are described in more detail and in more detail, but should not be understood as limiting the scope of the application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A filter assembly, characterized in that, include: The eyeglass frame has a first through hole in the middle, and the direction of the central axis of the first through hole is denoted as the first axial direction. The first lens group is connected to the frame and can rotate around the first axis. When light passes through the first lens group, the first lens group can change the light effect by rotating around the first axis. The second lens group is disposed on the side of the first lens group that is away from the frame; The third lens group is disposed on the side of the second lens group away from the frame, and the third lens group can rotate relative to the second lens group about the first axis. When light passes through the third lens group and the second lens group in sequence, the second lens group and the third lens group can change the light effect by rotating relative to each other. Furthermore, the second and third mirror groups can synchronously follow the rotation of the first mirror group. When light passes through the third and second mirror groups in sequence, the second and third mirror groups can change the light effect by synchronously following the rotation of the first mirror group.

2. A filter assembly according to claim 1, characterized in that, The first lens group is one or more of the following: graduated filter, star filter, and brushed filter.

3. A filter assembly according to claim 1, characterized in that, The second lens group is a polarizing filter, and the third lens group is a polarizing filter.

4. A filter assembly according to claim 1, characterized in that, The filter assembly also includes: The fourth lens group is located on the side of the third lens group that is away from the frame, and the light effect after the light passes through the fourth lens group is the same when the fourth lens group is rotated to any different position around the first axis.

5. A filter assembly according to claim 4, characterized in that, The fourth lens group is one or more of the following: neutral density filter, soft light filter, protective filter, broadband filter, narrowband filter, and light pollution filter.

6. A filter assembly according to claim 1, characterized in that, The frame is provided with a rotating component that can rotate around the first axis and a locking component that restricts the rotation of the rotating component.

7. A filter assembly according to claim 6, characterized in that, Along the first axial direction, the first mirror assembly is connected to the rotating component by magnetic adsorption; Furthermore, the rotating component is provided with a first limiting groove on the side facing the first lens group, and the first lens group is provided with a first limiting protrusion that cooperates with the first limiting groove on the side facing the rotating component. The first limiting groove cooperates with the first limiting protrusion to restrict the relative rotation of the first mirror assembly and the rotating member.

8. A filter assembly according to claim 1, characterized in that, Along the first axis, the second mirror group is connected to the first mirror group by magnetic adsorption; The first lens group has a second limiting groove on the side facing the second lens group, and the second lens group has a second limiting protrusion on the side facing the first lens group; The second limiting groove cooperates with the second limiting protrusion to restrict the relative rotation of the first lens group and the second lens group.

9. A filter assembly according to claim 4, characterized in that, Along the first axis, the second mirror group and the third mirror group are connected by magnetic adsorption; The second mirror group has a third limiting groove on the side facing the third mirror group, and the third mirror group has a third limiting protrusion on the side facing the second mirror group. The third limiting groove and the third limiting protrusion cooperate to limit the angle of relative rotation between the second mirror group and the third mirror group.

10. A filter assembly according to claim 9, characterized in that, Along the first axis, the third mirror group and the fourth mirror group are connected by magnetic adsorption; The direction of rotation about the first axis is denoted as the first circumferential direction, the dimension of the third limiting groove extending along the first circumferential direction is denoted as T1, and the dimension of the third limiting protrusion extending along the first circumferential direction is denoted as T2, satisfying the following relationship: T1 > T2.

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