Filter frame and filter for photographic system

Abstract

The utility model relates to a filter frame for a photographic system and a filter, the filter frame comprises a frame main body, the middle position of the frame main body is provided with a through hole, the hole wall of the through hole is provided with a positioning edge, and the filter frame is also provided with at least one first clamping part fixedly connected with the hole wall; the frame body is further provided with at least one second clamping part, and the second clamping part can be extruded to move in the opposite direction of the axis of the through hole and automatically move and reset in the direction of the axis of the through hole when no extrusion exists. And the first clamping part and the second clamping part are positioned on the same plane and form an accommodating cavity of the filter lens with the plane on which the positioning edge is positioned. According to the filter frame, the filter lens can be assembled in a photographing system, the filter lens is protected, contact and friction with a filter support and contact with a hand are avoided, the use safety and the photographing quality are improved, filter lenses with different functions can be installed, and the filter frame is flexible and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of photographic equipment, and particularly relates to a filter frame and a filter for a photographic system. Background Art

[0002] At present, filters are one of the most commonly used photographic equipment. However, the applicant has found that in the existing photographic systems, the filters used are all composed of only one filter lens. During the process of assembling into the photographic system and during use, the filter lens directly contacts and rubs against the filter holder of the photographic system, which is likely to cause damage to the filter lens, with low usage safety. Moreover, during the disassembly and assembly process, the filter lens is directly contacted by hand, which will necessarily cause the filter lens to be contaminated with fingerprints and other contaminants, thereby affecting the function of the filter lens and further reducing the shooting quality. Content of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the utility model provides a filter frame and a filter for a photographic system.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] In a first aspect, a filter frame for a photographic system according to the utility model includes a frame body. A through hole is provided in the middle position of the frame body. A positioning edge is provided on the hole wall of the through hole, and the positioning edge extends convexly towards the axis direction of the through hole;

[0006] At least one first clamping portion is further provided on the hole wall of the through hole. The first clamping portion extends convexly towards the axis direction of the through hole and is fixedly connected to the hole wall;

[0007] The frame body is further provided with at least one second clamping portion. The second clamping portion can be extruded to move in the opposite direction of the axis of the through hole and automatically move and reset in the direction of the axis of the through hole when there is no extrusion; and the first clamping portion and the second clamping portion are located in the same plane, and a receiving cavity for the filter lens is formed between the plane where they are located and the plane where the positioning edge is located.

[0008] Further, an elastic portion is provided on the frame body. The second clamping portion is provided at one end of the elastic portion facing the through hole. In the natural state without extrusion, the elastic portion extends the second clamping portion into the through hole.

[0009] Further, a relief hole is provided on the frame body. The relief hole is communicated with the through hole. The elastic portion is an elastic strip, which is arranged in the relief hole and is respectively connected to the hole walls at the corresponding two ends of the relief hole at both ends. The second clamping portion is arranged on the elastic strip and extends into the through hole from the communication position between the relief hole and the through hole;

[0010] Alternatively, a part of the hole edge of the through hole is an elastic part. A second clamping part is provided at one end of the elastic part facing the through hole, and a relief hole is provided on the side of the frame body away from the through hole where the elastic part is located.

[0011] Furthermore, the through hole, the positioning edge, the first clamping part, the second clamping part, the elastic part, the relief hole and the frame body are integrally formed.

[0012] Furthermore, a slope is provided on the outer surface of the end of the second clamping part. The slope inclines from the outside to the inside and extends to the end face.

[0013] Furthermore, an operation handle is provided on the outer surface of the frame body.

[0014] Furthermore, grooves are provided on at least one side surface of the operation handle.

[0015] Furthermore, a coating for distinguishing the functions of filter lenses is provided in the grooves on at least one side surface of the operation handle.

[0016] Furthermore, the coating is a fluorescent coating.

[0017] In a second aspect, a filter of the present utility model includes a filter lens and the above-mentioned filter frame for a photographic system. The filter lens is detachably installed in the through hole, and the edge of one side surface thereof abuts against the positioning edge, and the first clamping part and the second clamping part abut against the edge of the other side surface of the filter lens.

[0018] Advantages of the present utility model:

[0019] Through the above technical solutions, the present utility model can effectively protect the filter lens while assembling and using the filter lens in the photographic system, avoid contact and friction with the filter holder during the assembly and use process, and avoid contamination caused by contact between the filter lens and the hand during the use process, improve the use safety and the shooting quality, and can also install filter lenses with different functions according to the shooting requirements, which is flexible and convenient to use. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the filter frame for a photographic system according to Embodiment 1 of the present utility model;

[0021] Figure 2 is a schematic cross-sectional structural diagram of the filter frame for a photographic system according to Embodiment 1 of the present utility model;

[0022] Figure 3 is a schematic use structural diagram of the filter frame for a photographic system according to Embodiment 1 of the present utility model;

[0023] Figure 4It is a schematic structural diagram of the filter frame for a photographic system described in the second embodiment of the present utility model;

[0024] Figure 5 It is another schematic structural diagram of the filter frame for a photographic system described in the second embodiment of the present utility model;

[0025] Figure 6 It is a schematic structural diagram of the use of the filter frame for a photographic system described in the second embodiment of the present utility model.

[0026] Explanation of reference numerals: 1. Frame body, 2. Through hole, 3. Positioning edge, 4. First clamping part, 5. Second clamping part, 6. Accommodating cavity, 7. Elastic part, 8. Relief hole, 9. Inclined surface, 10. Operating handle, 11. Groove, 12. Filter lens. Detailed implementation manners

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] See Figure 1 , a filter frame for a photographic system described in an embodiment of the present utility model includes a frame body 1. The frame body 1 is flat, and a through hole 2 is provided at the middle position thereof. The through hole 2 is used for installing a filter lens, and its shape and size are adapted to the installed filter lens. For example: the through hole can be a circular through hole (such as Figure 1 ), or a square through hole (such as Figure 4 and 5 ).

[0029] A positioning edge 3 is provided on the hole wall of the through hole 2 of the present utility model, and the positioning edge 3 extends convexly towards the axis direction of the through hole 2; the specific structure can be: as shown in Figure 1 and 2 , in the first embodiment, a convex circular ring-shaped positioning edge 3 is provided on the hole wall of the circular through hole 2; or as shown in Figure 4 and 5 , in the second embodiment, convex strip-shaped positioning edges 3 are provided on the left and right hole walls of the square through hole 2.

[0030] Two first clamping parts 4 (one or more than two first clamping parts 4 can also be provided) are further provided on the hole wall of the through hole 2. The first clamping parts 4 extend convexly towards the axis direction of the through hole 2 and are fixedly connected to the hole wall; the frame body 1 is further provided with a second clamping part 5 (two or more than two second clamping parts 5 can also be provided). The second clamping part 5 can move in the opposite direction of the axis of the through hole 2 under the extrusion state and automatically move and reset in the direction of the axis of the through hole 2 when there is no extrusion.

[0031] Specifically, an elastic part 7 is provided on the frame body 1, and a second engaging part 5 is provided at one end of the elastic part 7 facing the through hole 2. In the natural state without extrusion, the second engaging part 5 is inserted into the through hole 2; more specifically, as Figure 1 and 2 , a relief hole 8 is provided on the frame body 1, and the relief hole 8 communicates with the through hole 2. The elastic part 7 is an elastic strip, which is arranged in the relief hole 8 and is respectively connected to the two end hole walls corresponding to the two ends of the relief hole 8 at both ends. The second engaging part 5 is arranged on the elastic strip and extends into the through hole 2 from the communicating part of the relief hole 8 and the through hole 2; it can also be as Figure 4 and 5 , a part of the hole edge of the through hole 2 is the elastic part 7, a second engaging part 5 is provided at one end of the elastic part 7 facing the through hole 2, and a relief hole 8 is provided on the frame body 1 on the side of the elastic part 7 away from the through hole 2. Moreover, the through hole 2, the positioning edge 3, the first engaging part 4, the second engaging part 5, the elastic part 7, the relief hole 8 and the frame body 1 are integrally formed, preferably by integral injection molding, with low cost and easy production and processing.

[0032] As Figure 2 , the first engaging part 4 and the second engaging part 5 are located in the same plane, and a receiving cavity 6 for the filter lens is formed between the plane where they are located and the plane where the positioning edge 3 is located.

[0033] As Figure 3 and Figure 6 shown, when the filter frame of the present utility model is in use, the user can detachably mount the filter lens 12 to be used on the frame body 1. The filter lens 12 can be one of a star filter, a UV filter, a polarizing filter, a soft focus filter, a neutral density graduated filter (ND filter). At this time, the filter lens 12 is located in the receiving cavity 6 of the through hole 2, and the edge of one side surface of the filter lens 12 abuts against the positioning edge 3. At the same time, the first engaging part 4 and the second engaging part 5 abut against the edge of the other side surface of the filter lens 12 for fixation. In this way, while the filter lens 12 is assembled and used in the photographic system through this filter frame, the filter lens 12 is effectively protected, avoiding contact and friction with the filter holder during the assembly and use process, improving the use safety, and also avoiding the problem of contamination caused by the contact between the filter lens 12 and the hand during the use process, ensuring the excellent function of the filter lens 12, improving the shooting quality. Moreover, the user can install filter lenses 12 with different functions on the filter frame according to the shooting requirements, which is flexible and convenient to use; furthermore, the through hole 2 of this filter frame is preferably of the size of a conventional existing filter lens, suitable for installing the filter lenses purchased by the user, reducing unnecessary waste.

[0034] As a preferred solution of the present utility model, as Figure 1 , 2As shown in Fig. 4, a bevel 9 is provided on the outer surface of the end of the second clamping portion 5. The bevel 9 slopes from the outside to the inside and extends to the end face. The bevel 9 facilitates the movement of the second clamping portion 5 outward from the through hole 2 under the extrusion of the filter lens 12 during the installation of the filter lens 12, and the filter lens 12 slides along the bevel 9 to the inside of the second clamping portion 5, causing the second clamping portion 5 to automatically reset and abut against the edge of the outer surface of the filter lens 12, making the installation operation more convenient and faster.

[0035] As another preferred solution of the present invention, as shown in Figure 1 、 3 Fig. 6, an operation handle 10 is provided on the outer surface of the frame body 1. Specifically, the operation handle 10 can be provided on one end face of the frame body 1 or on other surfaces of one end. Moreover, the operation handle 10 and the frame body 1 are of an integrated structure, such as integrally injection molded. The operation handle 10 improves the convenience of use on the one hand and further avoids the risk of contacting the filter lens 12 during use on the other hand.

[0036] Furthermore, in order to improve the stability and reliability of the user's fingers pinching the filter frame, at least one side surface of the operation handle 10 of the present invention is also provided with a groove 11.

[0037] And a coating (not shown in the figure) can also be provided in the groove 11 on at least one side surface of the operation handle 10. By setting coatings of different colors in the groove 11 to distinguish and identify filter lenses with different functions, the user can quickly select the filter with the required function from multiple filters of the filter frame of the present invention, making it more convenient to use.

[0038] Preferably, the coating is a fluorescent coating, which further enables the user to clearly know the function of the filter of the filter frame of the present invention even in an environment with insufficient light such as at night, further improving the convenience of use.

[0039] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches are also regarded as the protection scope of the present invention.

Claims

1. A filter frame for a photographic system, characterized in that: It comprises a frame body (1), a through hole (2) is provided in the middle of the frame body (1), a positioning edge (3) is provided on the hole wall of the through hole (2), and the positioning edge (3) extends convexly in the axial direction of the through hole (2); The hole wall of the through hole (2) is also provided with at least one first clamping portion (4), the first clamping portion (4) convexly extending in the axial direction of the through hole (2) and fixedly connected to the hole wall; The frame body (1) is also provided with at least one second clamping portion (5), which can be squeezed to move in the direction opposite to the axis of the through hole (2), and automatically move and reset in the direction of the axis of the through hole (2) when there is no squeezing; and the first clamping portion (4) and the second clamping portion (5) are located in the same plane, and a filter lens accommodation cavity (6) is formed between the first clamping portion (4) and the second clamping portion (5) and the plane where the positioning edge (3) is located.

2. The filter frame for a photographic system according to claim 1, characterized in that: The frame body (1) has an elastic portion (7), and one end of the elastic portion (7) facing the through hole (2) is provided with a second clamping portion (5). In a natural state without extrusion, the elastic portion (7) extends the second clamping portion (5) into the through hole (2).

3. The filter frame for a photographic system according to claim 2, characterized in that: The frame body (1) is provided with a clearance hole (8), the clearance hole (8) is connected to the through hole (2), the elastic part (7) is an elastic strip, which is arranged in the clearance hole (8), and the two ends are respectively connected to the two end hole walls corresponding to the clearance hole (8), and the second clamping part (5) is arranged on the elastic strip and extends into the through hole (2) from the connection point between the clearance hole (8) and the through hole (2); Alternatively, a portion of the hole edge of the through hole (2) is an elastic portion (7), a second clamping portion (5) is provided at one end of the elastic portion (7) facing the through hole (2), and a clearance hole (8) is provided on a side of the frame body (1) located away from the through hole (2) and away from the elastic portion (7).

4. The filter frame for a photographic system according to claim 3, characterized in that: The through hole (2), the positioning edge (3), the first clamping portion (4), the second clamping portion (5), the elastic portion (7), the clearance hole (8) and the frame body (1) are integrally formed.

5. The filter frame for a photographic system according to any one of claims 1 to 4, characterized in that: The end of the second clamping portion (5) is provided with an inclined surface (9) on the outer side surface, and the inclined surface (9) is inclined from the outside to the inside and extends to the end surface.

6. The filter frame for a photographic system according to any one of claims 1 to 4, characterized in that: An operating handle (10) is provided on the outer surface of the frame body (1).

7. The filter frame for a photographic system according to claim 6, characterized in that: At least one side surface of the operating handle (10) is provided with a groove (11).

8. The filter frame for a photographic system according to claim 7, characterized in that: A coating for distinguishing the functions of filter lenses is provided in the groove (11) on at least one side surface of the operating handle (10).

9. The filter frame for a photographic system according to claim 8, characterized in that: The coating is a fluorescent coating.

10. A filter, characterized in that: The invention comprises a filter lens (12) and a filter frame for a photographic system as claimed in any one of claims 1 to 9, wherein the filter lens (12) is detachably mounted in a through hole (2), and an edge of one side surface thereof abuts against a positioning edge (3), and the first clamping portion (4) and the second clamping portion (5) abut against an edge of the other side surface of the filter lens (12).

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