An aperture that can switch between various aperture shapes

Abstract

The present invention discloses an aperture capable of switching between various shapes of light holes, wherein an adjusting ring is movably mounted on an upper end surface of a fixing seat, the adjusting ring and the fixing seat are concentrically arranged, and the adjusting ring can rotate around the center of a circle of the fixing seat; the adjusting ring is in a circular ring structure, and a transmission gear is arranged inside the adjusting ring; an inner end ring surface of the adjusting ring is formed with an inner gear ring, and the transmission gear and the inner gear ring are meshed with each other; an aperture piece is fixedly arranged on the end surface of the transmission gear, and a plurality of light spot light holes of different shapes are arranged on the end surface of the aperture piece; when used in a lens product, in an actual shooting scene, the adjusting ring can be rotated to achieve an effect of continuously switching between light spot light holes of various shapes without replacing the aperture piece, thereby meeting the needs of defocused light spots of various shapes in the shooting scene; and the aperture piece is rotated by means of transmission gear and adjustment ring gear transmission, and the adjustment transmission method is more stable and more precise.

Description

Technical Field

[0001] The invention belongs to the technical field of apertures, and relates to an aperture capable of switching between a variety of light-through hole shapes. Background Art

[0002] The aperture is an entity that limits the light beam in an optical system. It can be the edge of a lens, a frame, or a specially set screen with holes. Its function can be divided into two aspects: limiting the light beam or limiting the size of the field of view (imaging range). In actual shooting scenes, the aperture can provide a beautiful defocused light spot effect for the shooting picture.

[0003] The shape of this defocused light spot is determined by the shape of the aperture of the diaphragm. The conventional aperture shapes on the market are circular or equilateral polygonal, and the same diaphragm can only use one shape of diaphragm. Therefore, in order to meet the needs of shooting scenes for a variety of defocused light spot shapes, the present application proposes an aperture structure that can achieve the effect of switching the aperture style, which has a variety of aperture shapes and these aperture shapes can be switched, and can meet the use needs of different defocused light spots. Summary of the invention

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

[0005] An aperture capable of switching between various light-through hole shapes, comprising: a fixing seat, an adjustment ring, a transmission gear, an aperture plate and an upper cover;

[0006] The adjusting ring is movably mounted on the upper end surface of the fixing seat. The adjusting ring and the fixing seat are arranged concentrically. The adjusting ring can rotate around the center of the fixing seat.

[0007] The adjusting ring is in a circular ring structure, the transmission gear is arranged inside the adjusting ring, and is rotatably mounted on the upper end surface of the fixing seat through the positioning shaft;

[0008] The inner end ring surface of the adjusting ring is formed with an inner gear ring, and the transmission gear and the inner gear ring are meshed with each other;

[0009] The upper cover is installed into the adjusting ring from the upper end; the upper cover and the fixing seat are concentrically arranged, and the central axes of the upper cover and the fixing seat are both provided with penetrating optical axis through holes;

[0010] The aperture piece is fixedly arranged on the end face of the transmission gear, and a plurality of light spot through holes with different shapes are arranged on the end face of the aperture piece, and the axis center distance of each group of light spot through holes and the optical axis through hole is the same as that of the transmission gear;

[0011] The transmission gear is provided with a plurality of air-avoiding light-through holes corresponding to the positions of the light spot light-through holes one by one, and the air-avoiding light-through holes are larger than the light spot light-through holes.

[0012] As a further solution of the present invention: the inner gear ring is arranged at the middle position of the inner end ring surface of the adjustment ring, the upper cover is embedded in the adjustment ring, and the upper end surface of the upper cover is flush with the upper edge of the adjustment ring.

[0013] As a further solution of the present invention: a group of upper cover mounting seats are also arranged in the adjusting ring, and the upper cover mounting seats are fixed on the upper end surface of the fixing seat; the transmission gear is installed at the opening position of the upper cover mounting seats;

[0014] The upper cover mounting seat is clearance-matched with the adjusting ring, and the upper end surface of the upper cover mounting seat is higher than the upper end surface of the inner gear ring of the adjusting ring, and the upper cover is fixedly mounted on the upper end surface of the upper cover mounting seat.

[0015] The beneficial effects of the present invention are as follows: when used in lens products, in actual shooting scenes, the effect of continuous switching of light holes of various shapes of spots can be achieved by rotating the adjustment ring without replacing the aperture piece, thereby meeting the needs of various shapes of defocused light spots in shooting scenes; and the aperture piece is rotated by means of transmission gears and adjustment ring gear transmission, and the adjustment transmission method is smoother and more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the installation structure of the transmission gear in the present invention.

[0018] Figure 3 It is a schematic diagram of the coordination of the transmission gear and the aperture piece structure in the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. It should be understood that the present application is not limited to the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figures 1 to 3 In an embodiment of the present invention, an aperture capable of switching a plurality of light-through hole shapes comprises: a fixing seat 1, an adjustment ring 3, a transmission gear 6, an aperture piece 5 and an upper cover 4;

[0024] The fixing seat 1 is of circular structure, and the adjusting ring 3 is movably mounted on the upper end surface of the fixing seat 1. The adjusting ring 3 is concentrically arranged with the fixing seat 1, and the adjusting ring 3 can rotate around the center of the fixing seat 1.

[0025] The adjusting ring 3 is in a circular ring structure, the transmission gear 6 is arranged inside the adjusting ring 3, and is rotatably mounted on the upper end surface of the fixing seat 1 through the positioning shaft 7;

[0026] The inner end ring surface of the adjusting ring 3 is formed with an inner gear ring 31, and the transmission gear 6 is meshed with the inner gear ring 31. When the adjusting ring 3 rotates, the transmission gear 6 can be driven by the inner gear ring 31 to achieve a synchronous rotation effect;

[0027] The upper cover 4 is inserted into the adjusting ring 3 from the upper end, and the light shielding of the internal structure is realized by the cooperation between the upper cover 4 and the fixing seat 1; the upper cover 4 and the fixing seat 1 are concentrically arranged, and the central axes of the upper cover 4 and the fixing seat 1 are both provided with a penetrating optical axis through hole 41 for light to enter;

[0028] The aperture piece 5 is fixedly arranged on the end surface of the transmission gear 6. A plurality of light spot through holes 51 with different shapes are arranged on the end surface of the aperture piece 5. The axial center distances of each group of light spot through holes 51 and the optical axis through hole 41 are the same as those of the transmission gear 6. Each group of light spot through holes 51 can be aligned with the optical axis through hole 41 by rotating the transmission gear 6.

[0029] The transmission gear 6 is provided with a plurality of air-avoiding light-through holes 61 corresponding to the positions of the light spot light-through holes 51 one by one, and the air-avoiding light-through holes 61 are larger than the light spot light-through holes 51, so as to ensure that when light passes through the light spot light-through holes 51, the transmission gear 6 will not cause shielding interference to the light spot light-through holes 51;

[0030] When used in lens products, in actual shooting scenes, the adjustment ring 3 can be rotated to achieve the effect of continuous switching of light spot holes 51 of various shapes without replacing the aperture piece 5, thereby meeting the needs of defocused light spots of various shapes in shooting scenes; and the aperture piece 5 is rotated by the transmission gear 6 and the adjustment ring 3 gear transmission, and the adjustment transmission method is smoother and more precise.

[0031] Furthermore, the inner gear ring 31 is arranged in the middle position of the inner end ring surface of the adjustment ring 3, the upper cover 4 is embedded in the adjustment ring 3, and the upper end surface of the upper cover 4 is flush with the upper edge of the adjustment ring 3, which can effectively improve the integrity of the overall structure.

[0032] Furthermore, a set of upper cover mounting seats 2 are also provided in the adjusting ring 3, and the upper cover mounting seats 2 are fixed on the upper end surface of the fixing seat 1; the transmission gear 6 is installed on the opening position 21 of the upper cover mounting seats 2;

[0033] The upper cover mounting seat 2 is clearance-matched with the adjusting ring 3, and the upper end surface of the upper cover mounting seat 2 is higher than the upper end surface of the inner gear ring 31 of the adjusting ring 3. The upper cover 4 is fixedly mounted on the upper end surface of the upper cover mounting seat 2, thereby realizing non-contact connection and cooperation between the upper cover 4 and the adjusting ring 3, ensuring that the adjusting ring 3 can smoothly achieve the effect of rotation adjustment.

[0034] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aperture capable of switching between multiple light-passing hole shapes, characterized in that: include: Fixed seat, adjusting ring, transmission gear, aperture piece and upper cover; The adjusting ring is movably mounted on the upper end surface of the fixing seat. The adjusting ring and the fixing seat are arranged concentrically. The adjusting ring can rotate around the center of the fixing seat. The adjusting ring is in a circular ring structure, the transmission gear is arranged inside the adjusting ring, and is rotatably mounted on the upper end surface of the fixing seat through the positioning shaft; The inner end ring surface of the adjusting ring is formed with an inner gear ring, and the transmission gear and the inner gear ring are meshed with each other; The upper cover is installed into the adjusting ring from the upper end; the upper cover and the fixing seat are concentrically arranged, and the central axes of the upper cover and the fixing seat are both provided with penetrating optical axis through holes; The aperture piece is fixedly arranged on the end face of the transmission gear, and a plurality of light spot through holes with different shapes are arranged on the end face of the aperture piece, and the axis center distance of each group of light spot through holes and the optical axis through hole is the same as that of the transmission gear; The transmission gear is provided with a plurality of air-avoiding light-through holes corresponding to the positions of the light spot light-through holes one by one, and the air-avoiding light-through holes are larger than the light spot light-through holes.

2. The aperture capable of switching between multiple light-through hole shapes according to claim 1, characterized in that: The inner gear ring is arranged at the middle position of the inner end ring surface of the adjusting ring, the upper cover is embedded in the adjusting ring, and the upper end surface of the upper cover is flush with the upper edge of the adjusting ring.

3. The aperture capable of switching between multiple light-through hole shapes according to claim 1, characterized in that: A set of upper cover mounting seats is also arranged in the adjusting ring, and the upper cover mounting seats are fixed on the upper end surface of the fixing seat; the transmission gear is installed on the opening position of the upper cover mounting seats; The upper cover mounting seat is clearance-matched with the adjusting ring, and the upper end surface of the upper cover mounting seat is higher than the upper end surface of the inner gear ring of the adjusting ring, and the upper cover is fixedly mounted on the upper end surface of the upper cover mounting seat.

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