Filter shading system

Abstract

The utility model relates to a filter shading system, which comprises a filter support with a through hole, a first connecting part used for being assembled at the front end of a lens is arranged at the outer surface end of the rear side of the filter support, two filter clamping pieces are arranged on the outer surface of the front side of the filter support, and the two filter clamping pieces are arranged in parallel at intervals to form more than two filter mounting cavities. The more than two filter mounting cavities at least comprise a first-class filter mounting cavity with a filter centering and positioning function and a second-class filter mounting cavity with a filter movable adjusting function; and the light shield is arranged on the front side of the filter support and is connected with the two filter clamping pieces. Therefore, the gradient filter can be movably adjusted and assembled, the non-gradient filter can be quickly centered, the use and operation are flexible and convenient, and the efficiency is high.

Description

Technical Field

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

[0002] At present, filters are the most widely used photographic tools. However, the applicant has found that existing filter lenses are divided into gradient filters (also known as graduated filters, such as gradient gray) and non-gradient filters (such as ND filters, star filters, UV filters, polarizing filters, soft light filters, etc.). Although existing filter holders can meet the installation and use requirements for the movable adjustment of gradient filters, for the installation of non-gradient filters, there are problems such as greater difficulty in positioning operations, being troublesome and time-consuming, as well as being prone to light leakage and vignetting, which can easily cause the best shooting opportunity to be missed, affect the shooting quality, and result in a poor experience. Content of the Utility Model

[0003] To solve the above problems existing in the prior art, the utility model provides a filter shading system.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A filter shading system according to the utility model includes:

[0006] A filter holder having a through hole, wherein a first connecting portion for being assembled to the front end of a lens is provided at the outer surface end of the rear side of the filter holder, and two filter lens clamping pieces are provided on the outer surface of the front side. The two filter lens clamping pieces are arranged in parallel at intervals, forming more than two filter installation cavities. The more than two filter installation cavities at least include a first type of filter installation cavity having a filter centering and positioning function and a second type of filter installation cavity having a filter movable adjustment function;

[0007] A lens hood is arranged on the front side of the filter holder and is connected to the two filter lens clamping pieces.

[0008] Further, the filter holder is further provided with a centering and positioning portion, and the centering and positioning portion is located at one end of at least one filter installation cavity far from the filter insertion end, forming the first type of filter installation cavity.

[0009] Further, the centering and positioning portion is a raised edge or a block.

[0010] Further, the two filter lens clamping pieces are arranged longitudinally in parallel and are respectively located on the left and right sides of the through hole, and a raised edge is provided at the lower end of the filter holder. The two ends of the raised edge are respectively connected to the lower ends of the two filter lens clamping pieces, forming a first type of filter installation cavity with one end blocked.

[0011] Further, the two filter lens clamping pieces are provided with a first engaging portion, and the light-shielding cover is provided with a second engaging portion. The light-shielding cover is detachably assembled and connected to the filter holder through the first engaging portion and the second engaging portion.

[0012] Further, the first engaging portion is composed of lugs provided on the two filter lens clamping pieces, and the second engaging portion is composed of a fixed buckle and an elastic buckle provided at the rear end of the light-shielding cover. During assembly, the fixed buckle and the elastic buckle respectively latch onto the two lugs.

[0013] Further, the two lugs are blocks protruding respectively in the left and right directions, and are provided at the front end of the filter lens clamping piece; the fixed buckle is a buckle with a hole, and the elastic buckle includes an integrated operation portion and a latching portion. The fixed buckle and the elastic buckle are provided at the left and right side edges of the rear end of the light-shielding cover; during assembly, a corresponding lug is latched in the hole of the fixed buckle, and the latching portion of the elastic buckle latches onto the other lug.

[0014] Further, the filter light-shielding system of the present invention further includes a filter frame for installing filter lenses to assemble the filter lenses for use in a type I filter installation cavity or a type II filter installation cavity.

[0015] Further, a lens mounting hole is provided at the middle position of the filter frame, and a positioning edge is provided on the hole wall of the lens mounting hole, and the positioning edge protrudes and extends towards the axis direction of the lens mounting hole; at least one first clamping portion is further provided on the hole wall of the lens mounting hole, and the first clamping portion protrudes and extends towards the axis direction of the lens mounting hole and is fixedly connected to the hole wall;

[0016] The filter frame is further provided with at least one second clamping portion, and the second clamping portion can be extruded to move in the opposite direction of the axis of the lens mounting hole and automatically move and reset towards the axis direction of the lens mounting hole when there is no extrusion; moreover, 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.

[0017] Further, a relief hole is provided in the filter frame, the relief hole communicates with the lens mounting hole, and an elastic strip is provided. The second clamping portion is provided at one end of the elastic strip facing the lens mounting hole. In the natural state without extrusion, the elastic strip extends the second clamping portion into the lens mounting hole from the connection between the relief hole and the lens mounting hole;

[0018] Alternatively, a part of the hole edge of the lens mounting hole is an elastic strip, the second clamping portion is provided at one end of the elastic strip facing the lens mounting hole, and a relief hole is provided on the side of the filter frame away from the lens mounting hole of the elastic strip.

[0019] Advantages of the present utility model:

[0020] Through the above technical solutions, the present utility model can achieve the movable adjustment and assembly of the gradient filter, and can also achieve the quick centering of the non-gradient filter, with flexible, convenient and efficient operation. Description of the Drawings

[0021] Figure 1 is a schematic structural view of the filter light-shielding system according to an embodiment of the present utility model;

[0022] Figure 2 is an exploded structural view of the filter light-shielding system according to an embodiment of the present utility model;

[0023] Figure 3 is a front view structural view of the filter holder in the filter light-shielding system according to an embodiment of the present utility model;

[0024] Figure 4 is a top view structural view of the filter holder in the filter light-shielding system according to an embodiment of the present utility model;

[0025] Figure 5 is a rear view structural view of the light-shielding cover in the filter light-shielding system according to an embodiment of the present utility model;

[0026] Figure 6 is a structural view of the first filter frame in the filter light-shielding system according to an embodiment of the present utility model;

[0027] Figure 7 is Figure 6 another structural view of the filter frame;

[0028] Figure 8 is Figure 6 a structural view of the use of the filter frame;

[0029] Figure 9 is a structural view of the second filter frame in the filter light-shielding system according to an embodiment of the present utility model;

[0030] Figure 10 is a structural view of the use of the filter light-shielding system according to an embodiment of the present utility model.

[0031] Description of reference numerals: 100, filter holder; 101, through hole; 102, first connecting portion; 103, filter lens clip; 104, filter mounting cavity; 104a, type I filter mounting cavity; 104b, type II filter mounting cavity; 105, centering and positioning portion; 106, ear; 200, lens hood; 201, fixed buckle; 202, elastic buckle; 203, hole; 204, operation portion; 205, buckling portion; 300, filter frame; 301, lens mounting hole; 302, positioning edge; 303, first engaging portion; 304, second engaging portion; 305, accommodating cavity; 306, relief hole; 307, elastic strip; 400, filter lens. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, 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.

[0033] See Figures 1-5 , a filter light-shielding system according to an embodiment of the present utility model includes a filter holder 100 and a lens hood 200.

[0034] Among them, the filter holder 100 has a through hole 101, and a first connecting portion 102 for assembling to the front end of a lens is provided at the outer surface end of the rear side of the filter holder 100. The first connecting portion 102 may be an external thread portion, and the external thread portion is annular and matches the internal thread at the front end of the lens.

[0035] Two filter lens clips 103 are provided on the outer surface of the front side of the filter holder 100. The two filter lens clips 103 are arranged in parallel at intervals, forming two or more filter mounting cavities 104. Moreover, the two or more filter mounting cavities 104 at least include a type I filter mounting cavity 104a having a filter centering and positioning function and a type II filter mounting cavity 104b having a filter movable adjustment function; wherein the type II filter mounting cavity 104b is used for mounting a gradient filter, and the type I filter mounting cavity 104a is used for mounting a non-gradient filter. Specifically, the filter holder 100 is further provided with a centering and positioning portion 105. The centering and positioning portion 105 is located at one end of at least one filter mounting cavity 104 away from the filter insertion end, forming the type I filter mounting cavity 104a; the centering and positioning portion 105 may be a convex edge or a block.

[0036] For example, in this embodiment Figure 3 and 4As shown, two filter lens clamping pieces 103 on the front outer surface of the filter holder 100 form three filter mounting cavities 104, including two type-one filter mounting cavities 104a and one type-two filter mounting cavity 104b. Specifically, the two filter lens clamping pieces 103 are arranged longitudinally and parallel to each other, and are respectively located on the left and right sides of the through hole 101. The lower end of the filter holder 100 is provided with a convex edge stop, and the two ends of the convex edge stop are respectively connected to the lower ends of the two filter lens clamping pieces 103, blocking the lower ends of the two filter mounting cavities 104 and being outside the lower end range of the third filter mounting cavity 104, forming two type-one filter mounting cavities 104a with one end blocked and one type-two filter mounting cavity 104b that is through from top to bottom.

[0037] As Figure 10 shown, when the filter shading system of the present utility model is in use, the user can insert a gradient filter 500 such as a graduated neutral density filter into the type-two filter mounting cavity 104b and move and adjust it, and insert non-gradient filters 600 such as ND filters, star filters, UV filters, polarizing filters, and soft light filters into the type-one filter mounting cavities 104a and abut against the centering positioning part 105 to achieve quick centering and positioning of the filters, with convenient operation and high efficiency.

[0038] Of course, when the filter shading system of the present utility model is in use, a gradient filter lens such as an ND filter can also be directly inserted into the type-two filter mounting cavity 104b and moved and adjusted, and non-gradient filter lenses such as star filters, UV filters, polarizing filters, and soft light filters can be inserted into the type-one filter mounting cavities 104a and abut against the centering positioning part 105.

[0039] Again, as Figures 1-5 shown, the shading cover 200 of the present utility model is arranged on the front side of the filter holder 100 and is connected to the two filter lens clamping pieces 103. The specific structure can be: the two filter lens clamping pieces 103 are provided with a first engaging part, and the shading cover 200 is provided with a second engaging part. The shading cover 200 is detachably assembled and connected to the filter holder 100 through the first engaging part and the second engaging part. More specifically, the first engaging part can be composed of clamping ears 106 provided on the two filter lens clamping pieces 103, and the second engaging part is composed of a fixed buckle 201 and an elastic buckle 202 provided at the rear end of the shading cover 200. During assembly, the fixed buckle 201 and the elastic buckle 202 respectively buckle the two clamping ears. Among them, the two clamping ears can be lumps protruding in the left and right directions respectively, and are arranged at the front end of the filter lens clamping piece 103; the fixed buckle 201 can be a buckle with a hole 203, and the elastic buckle 202 includes an integrated operation part 204 and a buckling part 205. The fixed buckle 201 and the elastic buckle 202 are arranged on the left and right side edges at the rear end of the shading cover 200; during assembly, a corresponding clamping ear 106 is stuck in the hole 203 of the fixed buckle 201, and the buckling part 205 of the elastic buckle 202 buckles the other clamping ear 106.

[0040] Through the above solution, the detachable and separable assembly connection between the filter holder 100 and the lens hood 200 is achieved. Users can assemble the lens hood 200 at the front end of the filter holder 100 or remove it from the front end of the filter holder 100 according to the shooting needs, which is flexible and convenient to use.

[0041] As a preferred solution of the present utility model, as Figures 6-9 This filter light-shielding system further includes a filter frame 300 for installing a filter lens 400, so as to assemble the filter lens 400 into a type-I filter installation cavity 104a or a type-II filter installation cavity 104b for use, effectively protecting the filter lens 400, avoiding contact and friction with the filter holder during the assembly and use process, improving the use safety, and also avoiding the problem of pollution caused by the contact between the filter lens 400 and the hand during the use process, ensuring the excellent function of the filter lens 400, improving the shooting quality, and moreover, users can install filter lenses 400 with different functions on the filter frame 300 according to the shooting needs, which is flexible and convenient to use. The specific structure of this filter frame 300 can be:

[0042] A lens mounting hole 301 is provided at the middle position of the filter frame 300. The lens mounting hole 301 is preferably of the size of a conventional filter lens available on the market, suitable for installing the filter lens purchased by the user, reducing unnecessary waste; a positioning edge 302 is provided on the hole wall of the lens mounting hole 301, and the positioning edge 302 extends convexly towards the axis direction of the lens mounting hole 301; at least one first clamping portion 303 is further provided on the hole wall of the lens mounting hole 301, and the first clamping portion 303 extends convexly towards the axis direction of the lens mounting hole 301 and is fixedly connected to the hole wall. Specifically, the filter frame 300 is flat, and a lens mounting hole 301 is provided at the middle position thereof. The lens mounting hole 301 is used for installing a filter lens, and its shape and size are adapted to the filter lens 400 to be installed. For example: the lens mounting hole 301 can be a circular through-hole (such as Figure 6 and 8 ), or it can be a square through-hole (such as Figure 9 ). A positioning edge 302 is provided on the hole wall of the lens mounting hole 301, and the positioning edge 302 extends convexly towards the axis direction of the lens mounting hole 301; the specific structure can be: such as Figures 6-8 , a raised circular ring-shaped positioning edge 302 is provided on the hole wall of the circular lens mounting hole 301; or such as Figure 9 , raised strip-shaped positioning edges 302 are provided on the left and right hole walls of the square lens mounting hole 301.

[0043] Moreover, the filter frame 300 is further provided with at least one second clamping portion 304. The second clamping portion 304 can be extruded to move in the direction opposite to the axis of the lens mounting hole 301, and automatically move and reset in the direction of the axis of the lens mounting hole 301 when there is no extrusion. Moreover, the first clamping portion 303 and the second clamping portion 304 are located in the same plane, and a receiving cavity 305 for the filter lens 400 is formed between the plane where the first clamping portion 303 and the second clamping portion 304 are located and the plane where the positioning edge 302 is located. More specifically, as Figures 6-8 , the filter frame 300 is provided with a relief hole 306. The relief hole 306 communicates with the lens mounting hole 301, and is provided with an elastic strip 307. The second clamping portion 304 is arranged at one end of the elastic strip 307 facing the lens mounting hole 301. In the natural state without extrusion, the elastic strip 307 extends the second clamping portion 304 into the lens mounting hole 301 from the communicating portion of the relief hole 306 and the lens mounting hole 301. It can also be like Figure 9 , a part of the hole edge of the lens mounting hole 301 is the elastic strip 307. The second clamping portion 304 is arranged at one end of the elastic strip 307 facing the lens mounting hole 301, and the filter frame 300 is provided with a relief hole 306 on the side of the elastic strip 307 away from the lens mounting hole 301. Moreover, the lens mounting hole 301, the positioning edge 302, the first clamping portion 303, the second clamping portion 304, the relief hole 306, the elastic strip 307 and the filter frame 300 are integrally formed, preferably by integral injection molding, which has low cost and is easy to produce and process.

[0044] The above is the preferred embodiment 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 light-shielding system, characterized in that, Comprising: A filter holder (100) having a through hole (101). The outer surface end of the rear side of the filter holder (100) is provided with a first connecting portion (102) for being assembled to the front end of a lens. The outer surface of the front side is provided with two filter lens clamping pieces (103). The two filter lens clamping pieces (103) are arranged in parallel at intervals, forming more than two filter mounting cavities (104). More than two of the filter mounting cavities (104) at least include a first type of filter mounting cavity (104a) having a filter centering and positioning function and a second type of filter mounting cavity (104b) having a filter movable adjustment function. A lens hood (200) is arranged on the front side of the filter holder (100) and is connected to the two filter lens clamping pieces (103).

2. The filter light-shielding system according to claim 1, wherein The filter holder (100) is further provided with a centering and positioning portion (105). The centering and positioning portion (105) is located at one end of at least one filter mounting cavity (104) away from the filter insertion end, forming the first type of filter mounting cavity (104a).

3. The filter light-shielding system according to claim 2, wherein The centering and positioning portion (105) is a convex edge or a stopper.

4. The filter light-shielding system according to claim 3, characterized in that, The two filter lens clamping pieces (103) are arranged longitudinally in parallel and are respectively located on the left and right sides of the through hole (101). And a convex edge is provided at the lower end of the filter holder (100). The two ends of the convex edge are respectively connected to the lower ends of the two filter lens clamping pieces (103), forming a first type of filter mounting cavity (104a) with one end blocked.

5. The filter shading system according to any one of claims 1-4, characterized in that, The two filter lens clamping pieces (103) are provided with a first engaging portion, and the lens hood (200) is provided with a second engaging portion. The lens hood (200) is detachably assembled and connected to the filter holder (100) through the first engaging portion and the second engaging portion.

6. The filter light-shielding system according to claim 5, wherein The first engaging portion is composed of lugs (106) provided on the two filter lens clamping pieces (103). The second engaging portion is composed of a fixed buckle (201) and an elastic buckle (202) provided at the rear end of the lens hood (200). During assembly, the fixed buckle (201) and the elastic buckle (202) respectively buckle the two lugs.

7. The filter light-shielding system according to claim 6, wherein The two lugs are blocks protruding respectively in the left and right directions, and are arranged at the front ends of the filter lens clamping pieces (103). The fixed buckle (201) is a buckle with a hole (203). The elastic buckle (202) includes an integrated operation portion (204) and a buckling portion (205). The fixed buckle (201) and the elastic buckle (202) are arranged on the left and right side edges of the rear end of the lens hood (200). During assembly, a corresponding lug (106) is stuck in the hole (203) of the fixed buckle (201), and the buckling portion (205) of the elastic buckle (202) buckles the other lug (106).

8. The filter light-shielding system according to any one of claims 1-4, 6, and 7, characterized in that It further includes a filter frame (300) for installing a filter lens (400) to assemble the filter lens (400) into the first type of filter mounting cavity (104a) or the second type of filter mounting cavity (104b) for use.

9. The filter light-shielding system according to claim 8, wherein, A lens mounting hole (301) is provided at the middle position of the filter frame (300). A positioning edge (302) is provided on the hole wall of the lens mounting hole (301), and the positioning edge (302) extends convexly towards the axis direction of the lens mounting hole (301); at least one first clamping portion (303) is further provided on the hole wall of the lens mounting hole (301), and the first clamping portion (303) extends convexly towards the axis direction of the lens mounting hole (301) and is fixedly connected to the hole wall; The filter frame (300) is further provided with at least one second clamping portion (304), and the second clamping portion (304) can be extruded to move in the opposite direction of the axis of the lens mounting hole (301), and automatically move and reset towards the axis direction of the lens mounting hole (301) when there is no extrusion; moreover, the first clamping portion (303) and the second clamping portion (304) are located in the same plane, and a receiving cavity (305) for the filter lens (400) is formed between the plane where they are located and the plane where the positioning edge (302) is located.

10. The filter light-shielding system according to claim 9, wherein The filter frame (300) is provided with a relief hole (306), the relief hole (306) communicates with the lens mounting hole (301), and an elastic strip (307) is provided. The second clamping portion (304) is arranged at one end of the elastic strip (307) facing the lens mounting hole (301). In the natural state without extrusion, the elastic strip (307) extends the second clamping portion (304) into the lens mounting hole (301) from the communicating part of the relief hole (306) and the lens mounting hole (301); Alternatively, a part of the hole edge of the lens mounting hole (301) is the elastic strip (307), the second clamping portion (304) is provided at one end of the elastic strip (307) facing the lens mounting hole (301), and the filter frame (300) is provided with a relief hole (306) on the side of the elastic strip (307) away from the lens mounting hole (301).

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