CN219512500U - Filter assembly - Google Patents

Abstract

The utility model relates to a filter assembly comprising: the lens frame comprises a lens frame body, a first lens group, a second lens group, a third lens group and a fourth lens group. The filters with multiple functional types are systematically divided into three categories, the first type of filters can change the light effect through self rotation, the first type of filters are used as a first lens group to be connected with the lens frame, and the first lens group rotates relative to the lens frame to change the light effect; the second type filter is rotated along with the first type filter through the relative rotation of the two filters or synchronously so as to change the light efficiency; the light effect of the third type of filter is not changed no matter what type of rotation, and the third type of filter is used as a fourth lens group to be arranged on one surface of the third lens group, which is away from the lens frame. Through the organic combination, a user can set the filter at the corresponding position according to the classification of the lens group so as to realize different operation combinations, and the functional characteristics of most of the filters can be exerted, so that the use threshold of the filter is reduced.

Description

Filter assembly

Technical Field

The utility model relates to the technical field of filters, in particular to a filter assembly.

Background

In the process of photographing and photography, a filter is added in front of a lens to obtain a better photographing effect. Along with the increasing requirements of users on shooting effects, the types of filters are also increasing, and in order to enrich the use modes of the filters, a structure for enabling a single filter to rotate or enabling two filters to rotate relatively is added on a lens frame of the filter in the prior art. For example, the inventors' prior application: chinese patent No. CN111458959a discloses a filter mounting structure, in which a first lens frame can rotate or lock relative to a lens frame, and a second lens frame can rotate relative to the first lens frame. However, the use modes of the filter are richer, the types of the filter are more, but the selection faced by the user is too many, but the system is not formed, the filter is too dependent on the user to match and combine according to the experience of the user, and the entrance threshold of the new user is definitely improved. Therefore, it is necessary to provide a filter assembly to systematically integrate the usage characteristics of most types of filters, and organically match different functional structures for different types of filters, so as to reduce the usage threshold of users.

Disclosure of Invention

The utility model aims to provide a filter assembly which systematically integrates the use characteristics of most types of filters and organically matches different functional structures for different types of filters so as to reduce the use threshold of users.

According to an aspect of the present utility model, there is provided a filter assembly comprising:

the middle part of the glasses frame is penetrated to form a first through hole, and the central axis direction of the first through hole is marked as a first axial direction;

the first lens group is connected with the lens frame and can rotate around the first axial direction, and when light passes through the first lens group, the first lens group can change the light effect through rotating around the first axial direction;

the second lens group is arranged on one surface of the first lens group, which is away from the lens frame;

the third lens group is arranged on one surface of the second lens group, which is away from the lens frame, and can rotate around the first axial direction relative to the second lens group, and when light rays sequentially pass through the third lens group and the second lens group, the second lens group and the third lens group can change the light efficiency through relative rotation;

and the second lens group and the third lens group can synchronously follow the first lens group to rotate, and when light rays sequentially pass through the third lens group and the second lens group, the second lens group and the third lens group can synchronously follow the first lens group to rotate so as to change light efficiency.

More preferably, the first lens group is one or a combination of a plurality of gradual change filters, starlight filters and wiredrawing filters.

More preferably, the second lens group is a polarized filter, and the third lens group is a polarized filter.

More preferably, the filter assembly further comprises:

the fourth lens group is arranged on one surface of the third lens group, which is away from the lens frame, and when the fourth lens group rotates around the first axial direction to any different positions, the light efficiency of the light rays passing through the fourth lens group is the same.

More preferably, the fourth lens group is one or a combination of a plurality of light-reducing filter, soft light filter, protective lens, broadband filter, narrow-band filter and light hazard filter.

More preferably, the frame is provided with a rotating member capable of rotating around the first axial direction and a locking member for restricting rotation of the rotating member.

More preferably, in the first axial direction, the first lens group is connected with the rotating member through magnetic adsorption;

a first limiting groove is formed in one surface of the rotating piece, facing the first lens group, and a first limiting protrusion matched with the first limiting groove is formed in one surface of the first lens group, facing the rotating piece;

the first limiting groove is matched with the first limiting protrusion to limit the relative rotation of the first lens group and the rotating piece.

More preferably, in the first axial direction, the second lens group is connected with the first lens group through magnetic adsorption;

a second limiting groove is formed in one surface of the first lens group, which faces the second lens group, and a second limiting protrusion is formed in one surface of the second lens group, which faces the first lens group;

the second limiting groove is matched with the second limiting protrusion to limit the relative rotation of the first lens group and the second lens group.

More preferably, in the first axial direction, the second lens group is connected with the third lens group through magnetic adsorption;

the second lens group is provided with a third limiting groove facing one surface of the third lens group, one surface of the third lens group facing the second lens group is provided with a third limiting protrusion, and the third limiting groove is matched with the third limiting protrusion to limit the relative rotation angle of the second lens group and the third lens group.

More preferably, in the first axial direction, the third lens group is connected with the fourth lens group through magnetic adsorption;

the direction around the first axial rotation is marked as a first circumference, the size of the third limiting groove extending along the first circumference is marked as T1, the size of the third limiting protrusion extending along the first circumference is marked as T2, and the relation is satisfied:

T1＞T2。

the utility model has the following beneficial effects:

the filters with multiple functional types are systematically divided into three categories, the first type of filters can change the light effect through self rotation, the first type of filters are used as a first lens group to be connected with the lens frame, and the first lens group rotates relative to the lens frame to change the light effect; the second type filter is rotated by the relative rotation of the two filters or synchronously follows the rotation of the first type filter so as to change the light efficiency, and the second type filter is used as a second lens group and a third lens group to be sequentially arranged on one surface of the first lens group, which is away from the lens frame; the light effect of the third type of filter is not changed no matter what type of rotation, and the third type of filter is used as a fourth lens group to be arranged on one surface of the third lens group, which is away from the lens frame. Through the organic combination, a user can set the filter at the corresponding position according to the classification of the lens group so as to realize different operation combinations, and the functional characteristics of most of the filters can be exerted, so that the use threshold of the filter is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a filter assembly according to an embodiment of the utility model;

FIG. 2 is a schematic perspective view of a filter assembly according to an embodiment of the utility model;

FIG. 3 is a schematic exploded view of a filter assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of another exploded view of a filter assembly according to an embodiment of the present utility model;

FIG. 5 is a front view of a filter assembly according to an embodiment of the present utility model;

FIG. 6 is a top view of a filter assembly according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view of a frame according to an embodiment of the utility model;

FIG. 8 is a schematic view illustrating a structure of a rotating member and a locking member according to an embodiment of the present utility model;

FIG. 9 is a top view of a second lens assembly according to an embodiment of the present utility model;

FIG. 10 is a bottom view of a third lens assembly according to an embodiment of the present utility model;

FIG. 11 is a schematic perspective view of a photographic filter assembly according to an embodiment of the utility model;

reference numerals illustrate: 100. a filter assembly; 10. a frame; 11. a first through hole; f1, a first axial direction; 21. a first lens group; 22. a second lens group; 23. a third lens group; 24. a fourth lens group; 12. a rotating member; 13. a locking member; f2, a first circumferential direction; 200. a photographic filter assembly; 31. a first photographic lens group; 32. a second photographic lens group; 33. a third photographic lens group; 34. a fourth photographic lens group; 411. a first limit groove; 412. the second limit groove; 413. a third limit groove; 421. the first limiting protrusion; 422. the second limiting bulge; 423. and a third limit protrusion.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may 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 may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-10, an embodiment of the present utility model provides a filter assembly 100 for photographing, the filter assembly comprising: the lens frame 10, the first lens group 21, the second lens group 22, the third lens group 23 and the fourth lens group 24.

The middle part of the lens holder 10 is penetrated and formed with a first through hole 11, and the filter is disposed at a position corresponding to the first through hole 11, and light is transmitted to the photographing apparatus through the first through hole 11 during photographing. In the present embodiment, the central axis direction of the first through hole 11 is referred to as a first axial direction F1.

In this embodiment, the first lens group 21 is connected to the lens holder 10, and the first lens group 21 is rotatable about the first axial direction F1, and in this embodiment, the lens holder 10 is provided with a rotatable member 12 rotatable about the first axial direction F1, and a locking member 13 for restricting rotation of the rotatable member 12. In the first axial direction F1, the first mirror group 21 is connected to the rotating member 12 by magnetic attraction.

The direction of rotation around the first axial direction F1 is denoted as a first circumferential direction F2, and the first lens group 21 is connected to the rotating member 12 in the first circumferential direction F2, so that when the restriction on the rotating member 12 is released by the locking member 13, the rotating member 12 drives the first lens group 21 to rotate around the first axial direction F1.

In the present utility model, the filters of the first type are systematically classified into three types, and the light efficiency can be changed by rotating the first type as the first lens group 21, and the light efficiency can be changed by rotating the first lens group 21 relative to the lens frame 10.

The first lens group 21 is one or a combination of a plurality of gradual change filters, starlight filters and wire drawing filters. Among them, the starlight filter is also called a starburst filter. The above filters have the same characteristics, and when light passes through any one of the gradation filter, the starlight filter, and the wire drawing filter, the light efficiency can be changed by rotating the filters. For example, a wire drawing filter is additionally arranged in the photographing process, light in a lens can intensively extend along a linear direction under the light guide effect of wire drawing, and when the wire drawing is in a horizontal phase, the light intensively extends along a vertical direction to form a vertical light band. When the wire drawing filter is rotated by 90 degrees and the wire drawing is in a vertical phase, the lamplight intensively extends along the horizontal direction to form a horizontal light band. It is understood that the angle of rotation of the wire drawing filter is not limited to 90 °. Thus, when light passes through the first lens group 21, the first lens group 21 can change the light efficiency by rotating about the first axial direction F1.

The magnetic attraction between the first lens group 21 and the rotating member 12 may be achieved by providing a magnetic attraction member with magnetic pairing on the lens frame or the rotating member 12 of the first lens group 21, for example, a rigid magnet, a magnetic strip, a magnetic block, or a flexible magnetic strip, a magnetic adhesive, a magnetic patch, or the like, or may be made of a material with magnetic properties on the whole or part of the lens frame or the rotating member 12.

In order to rotate the rotating member 12 around the first axial direction F1, an annular guide rail may be disposed on the frame 10, and the rotating member 12 may be disposed in a circular structure that slides in cooperation with the annular guide rail, so as to rotate the rotating member 12 around the center of the annular guide rail, that is, around the first axial direction F1. In this embodiment, one end of the rotating member 12 along the first axial direction F1 is connected to the first photographing assembly, and the rotating member 12 is used for a user to dial to control the rotation of the first lens assembly 21.

Wherein, in order to make the first lens group 21 rotate along with the rotating member 12, a first limiting slot 411 is disposed on a surface of the rotating member 12 facing the first lens group 21, and a first limiting protrusion 421 matched with the first limiting slot 411 is disposed on a surface of the first lens group 21 facing the rotating member 12; the first limiting slot 411 cooperates with the first limiting protrusion 421 to limit the relative rotation of the first lens assembly 21 and the rotating member 12, so that the first lens assembly 21 follows the rotating member 12 to rotate.

In order to lock the rotating member 12 by the locking member 13, in this 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 will be appreciated that locking member 13 may also be used to lock rotor 12 in other ways, such as by using other directional stops to increase friction between locking member 13 and rotor 12, such as by placing locking member 13 in contact with the inner and outer races of rotor 12 to provide locking of rotor 12 by clamping. It is also possible to adopt a scheme in which a battery iron is provided between the rotary member 12 and the locking member 13, and a strong electromagnetic force is formed by energization to lock the rotary member 12, limit the rotation of the rotary member 12, and the like.

In an embodiment, the second lens group 22 is disposed on a surface of the first lens group 21 facing away from the lens frame 10, in the first axial direction F1, the second lens group 22 is connected to the first lens group 21 through magnetic attraction, the third lens group 23 is connected to the second lens group 22 through magnetic attraction, and the third lens group 23 is connected to the fourth lens group 24 through magnetic attraction;

wherein, a second limiting groove 412 is disposed on a surface of the first lens group 21 facing the second lens group 22, and a second limiting protrusion 422 is disposed on a surface of the second lens group 22 facing the first lens group 21. 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.

The second lens group 22 is provided with a third limiting groove 413 facing the third lens group 23, the third lens group 23 is provided with a third limiting protrusion 423 facing the second lens group 22, the direction of rotation around the first axial direction F1 is denoted as a first circumferential direction F2, the size of the third limiting groove 413 extending along the first circumferential direction F2 is denoted as T1, the size of the third limiting protrusion 423 extending along the first circumferential direction F2 is denoted as T2, and the following relationship is satisfied:

T1＞T2；

thus, the third limiting groove 413 cooperates with the third limiting protrusion 423 to limit the angle of the second lens group 22 and the third lens group 23.

In the utility model, the filters with multiple functional types are systematically divided into three categories, the second type of filters change the light effect through the relative rotation of the two filters, the second type of filters are sequentially arranged on the surface of the first lens group 21, which is away from the lens frame 10, as a second lens group 22 and a third lens group 23, and the light effect is changed through the rotation of the second lens group 22 relative to the third lens group 23;

the second lens group 22 is a polarized filter, and the third lens group 23 is a polarized filter, and the light intensity can be adjusted simultaneously by the relative rotation of the polarized filter and the polarized filter, so that dimming with different degrees is realized; by rotating the two polarization filters synchronously, extinction of different degrees can be realized, for example, reflection of the surface of the photographed object is eliminated. In this embodiment, the second limiting groove 412 is matched with the second limiting protrusion 422 to limit the relative rotation between the first lens group 21 and the second lens group 22. Therefore, the first lens group 21 is rotated, and the second lens group 22 and the third lens group 23 are driven to synchronously rotate along with the first lens group 21, so that the two polarized filters can synchronously rotate. Therefore, when light passes through the third lens group 23 and the second lens group 22 in sequence, the second lens group 22 and the third lens group 23 can perform dimming to different degrees by rotating around the first axial direction F1, and the first lens group 21 is rotated to drive the second lens group 22 and the third lens group 23 to rotate synchronously, so that extinction to different degrees can be realized.

The magnetic attraction between the second lens group 22 and the first lens group 21 may be achieved by providing magnetic attraction members with magnetic pairs, such as rigid magnets, magnetic strips, magnetic blocks, or flexible magnetic strips, magnetic glue, magnetic patches, or the like, on the lens frame of the first lens group 21 or the lens frame of the second lens group 22, or by using materials with magnetic properties for the whole or part of the lens frame.

The magnetic attraction between the third lens group 23 and the second lens group 22 may be achieved by providing magnetic attraction members with magnetic pairs, such as rigid magnets, magnetic strips, magnetic blocks, or flexible magnetic strips, magnetic glue, magnetic patches, etc., on the lens frame of the second lens group 22 or the lens frame of the third lens group 23, or by providing magnetic strips in the lens frame, or by using magnetic materials for the whole or part of the lens frame.

In the present inventive concept, by systematically classifying the various functional types of filters into three major categories, the third type of filter, which does not change the light efficiency regardless of the form of rotation, is disposed as the fourth lens group 24 on the side of the third lens group 23 facing away from the lens frame 10.

The fourth lens group 24 is one or a combination of a plurality of light-reducing filter, soft filter, protective lens, broadband filter, narrow-band filter and light-harmful filter.

The soft light mirror is also called soft focus mirror, hazy mirror, fog mirror, dream mirror, soft mirror, etc. Among these, the most common broadband filters are UV/IR CUT filters. The UV/IR CUT filter filters ultraviolet rays and infrared rays in a one-CUT mode, only allows visible light wave bands to pass through, and is collected by a camera. LRGB filters commonly used in black and white cameras can also be categorized as broadband filters. In the film photography, the film is sensitive to ultraviolet light, so the UV filter is usually added in front of the lens to prevent the ultraviolet light from being absorbed to influence the photosensitivity. Among them, the photodamage filter is a filter manufactured to block artificial light, and common photodamage filters include Lpro, UHC, clearSky filter of the electricity of the space Long Guang, astro Nightscan, astro Multispectra of Taiwan STC, LPS P2 of Japan IDAS, etc. Among them, the narrow-band filter is a filter that allows only a specific wavelength to pass. The above filters have the same characteristics, and when light passes through any one of the light reduction filter, the soft filter, the protection filter, the wide band filter, the narrow band filter, and the light damage filter, the light efficiency is not changed even if the filter is rotated. Thus, when the fourth lens group 24 rotates around the first axial direction F1 to any different position, the light efficiency of the light passing through the fourth lens group 24 is the same.

The magnetic attraction between the fourth lens group 24 and the third lens group 23 may be achieved by providing magnetic attraction members with magnetic pairs, such as rigid magnets, magnetic strips, magnetic blocks, or flexible magnetic strips, magnetic glue, magnetic patches, etc., on the lens frame of the fourth lens group 24 or the lens frame of the third lens group 23, or by providing magnetic strips in the lens frame in the present embodiment, the whole or part of the lens frame may be made of magnetic materials.

Referring to fig. 11, the present utility model also provides a photographic filter assembly 200.

The same structure of the frame 10 and the same structure of the frame can be adopted for the photographic filter assembly 200 and the filter assembly 100, which are different in application scenes, the filter assembly 100 is used for dynamic or static photographing such as photographing, image capturing, film photographing, video recording, short video recording, and the like, and the photographic filter assembly 200 is mainly used for photographing in an equal static state.

Wherein, the photographic filter assembly 200 comprises: the lens frame 10, the first photographic lens group 31, the second photographic lens group 32, the third photographic lens group 33, and the fourth photographic lens group 34.

The first photographing lens assembly 31 is a polarizing filter, the fourth photographing lens assembly 34 is a polarizing filter, the second photographing lens assembly 32 is a combination of one or more of a gradient filter, a star filter and a wire drawing filter, and the third photographing lens assembly 33 is a combination of one or more of a dimming filter, a soft filter, a protection lens, a broadband filter, a narrow-band filter and a light damage filter.

Therefore, the light efficiency of the first type of filter can be changed by rotating the first type of filter by the first type of filter, the first type of filter is used as the first lens group 21 to be connected with the lens frame 10, and the light efficiency is changed by rotating the first lens group 21 relative to the lens frame 10; the second type of filter is rotated by the relative rotation of the two filters or synchronously follows the rotation of the first type of filter to change the light efficiency, and the second type of filter is used as a second lens group 22 and a third lens group 23 to be sequentially arranged on one surface of the first lens group 21, which is away from the lens frame 10; the third type of filter, which does not change the light efficiency in any way of rotation, is arranged as a fourth lens group 23 on the side of the third lens group 23 facing away from the frame 10. Through the organic combination, a user can set the filter at the corresponding position according to the classification of the lens group so as to realize different operation combinations, and the functional characteristics of most of the filters can be exerted, so that the use threshold of the filter is reduced.

The above embodiments represent only a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A filter assembly, comprising:

the middle part of the glasses frame is penetrated to form a first through hole, and the central axis direction of the first through hole is marked as a first axial direction;

the first lens group is connected with the lens frame and can rotate around the first axial direction, and when light passes through the first lens group, the first lens group can change the light effect through rotating around the first axial direction;

the second lens group is arranged on one surface of the first lens group, which is away from the lens frame;

the third lens group is arranged on one surface of the second lens group, which is away from the lens frame, and can rotate around the first axial direction relative to the second lens group, and when light rays sequentially pass through the third lens group and the second lens group, the second lens group and the third lens group can change the light efficiency through relative rotation;

and the second lens group and the third lens group can synchronously follow the first lens group to rotate, and when light rays sequentially pass through the third lens group and the second lens group, the second lens group and the third lens group can synchronously follow the first lens group to rotate so as to change light efficiency.

2. The filter assembly of claim 1, wherein the first lens group is one or a combination of graded filters, starlight filters, wire filters.

3. The filter assembly of claim 1, wherein the second lens group is a polarizing filter and the third lens group is a polarizing filter.

4. The filter assembly of claim 1, further comprising:

the fourth lens group is arranged on one surface of the third lens group, which is away from the lens frame, and when the fourth lens group rotates around the first axial direction to any different positions, the light efficiency of the light rays passing through the fourth lens group is the same.

5. The filter assembly of claim 4, wherein the fourth lens group is one or more of a dimming filter, a soft filter, a protection lens, a broadband filter, a narrow band filter, and a light damage filter.

6. A filter assembly according to claim 1, wherein,

the mirror bracket is provided with a rotating piece capable of rotating around the first axial direction and a locking piece for limiting the rotating piece to rotate.

7. A filter assembly according to claim 6, wherein,

in the first axial direction, the first lens group is connected with the rotating piece through magnetic adsorption;

a first limiting groove is formed in one surface of the rotating piece, facing the first lens group, and a first limiting protrusion matched with the first limiting groove is formed in one surface of the first lens group, facing the rotating piece;

the first limiting groove is matched with the first limiting protrusion to limit the relative rotation of the first lens group and the rotating piece.

8. A filter assembly according to claim 1, wherein,

in the first axial direction, the second lens group is connected with the first lens group through magnetic adsorption;

a second limiting groove is formed in one surface of the first lens group, which faces the second lens group, and a second limiting protrusion is formed in one surface of the second lens group, which faces the first lens group;

the second limiting groove is matched with the second limiting protrusion to limit the relative rotation of the first lens group and the second lens group.

9. A filter assembly according to claim 4, wherein,

in the first axial direction, the second lens group is connected with the third lens group through magnetic adsorption;

the second lens group is provided with a third limiting groove facing one surface of the third lens group, one surface of the third lens group facing the second lens group is provided with a third limiting protrusion, and the third limiting groove is matched with the third limiting protrusion to limit the relative rotation angle of the second lens group and the third lens group.

10. A filter assembly according to claim 9, wherein,

in the first axial direction, the third lens group is connected with the fourth lens group through magnetic adsorption;

the direction around the first axial rotation is marked as a first circumference, the size of the third limiting groove extending along the first circumference is marked as T1, the size of the third limiting protrusion extending along the first circumference is marked as T2, and the relation is satisfied:

T1＞T2。