Dimming filter and camera lens

Abstract

The invention discloses a dimming filter and a camera lens, and belongs to the field of dimming filters. The dimming filter comprises a dimming panel and a magnetic suction ring frame; the number of the magnetic attraction ring frames is two, and at least one dimming panel is sequentially arranged between the two magnetic attraction ring frames in an overlaid mode. Each dimming panel comprises a first lead, a second lead, sealant, and a first glass substrate, a first electrode layer, a first orientation layer, a dye liquid crystal layer, a second orientation layer, a second electrode layer and a second glass substrate which are arranged in sequence, one end of the first lead is connected with the first electrode layer, one end of the second lead is connected with the second electrode layer, and the other end of the second lead is connected with the dye liquid crystal layer. The outer rings of the first glass substrate and the second glass substrate are bonded through a sealant; when the number of the dimming panels is more than two, the colors of the dye liquid crystal layers of the dimming panels are the same or different, and the orientations of the dye liquid crystals of the dye liquid crystal layers of the adjacent dimming panels are perpendicular to each other. According to the invention, stepless adjustment is realized without frequently replacing the dimming filter.

Description

Technical Field

[0001] The present application relates to the technical field of dimming filters, and in particular to a dimming filter and a camera lens. Background Art

[0002] As an important image recording tool, cameras play an irreplaceable role in people's daily life and work. Cameras are usually composed of lenses, apertures, shutters, photosensitive elements, viewfinders, control systems, and storage systems. Among them, the role of the lens is to collect light and focus it on the photosensitive element.

[0003] The camera lens needs to adjust the amount of light entering the camera according to actual needs. Currently, the camera lens uses a neutral density filter to adjust the amount of light entering the camera. However, the camera light amount can only be adjusted in gears by replacing different neutral density filters, and stepless adjustment is not possible. Summary of the invention

[0004] The embodiments of the present application provide a dimming filter and a camera lens, which can solve the problem that the current camera light amount can only be adjusted by replacing different neutral density filters and stepless adjustment cannot be achieved.

[0005] In order to achieve the above object, the technical solution of the embodiment of the present invention is:

[0006] In a first aspect, an embodiment of the present invention provides a dimming filter, comprising a dimming panel and a magnetic ring frame; the magnetic ring frames comprise two, and at least one dimming panel is sequentially stacked between the two magnetic ring frames; each dimming panel comprises a first lead, a second lead, a sealant, and a first glass substrate, a first electrode layer, a first orientation layer, a dye liquid crystal layer, a second orientation layer, a second electrode layer, and a second glass substrate that are sequentially arranged, one end of the first lead is connected to the first electrode layer, one end of the second lead is connected to the second electrode layer, and the outer circles of the first glass substrate and the second glass substrate are bonded by the sealant; when the dimming panel comprises more than two, the dye liquid crystal layers of the more than two dimming panels have the same or different colors, and the orientations of the dye liquid crystals of the dye liquid crystal layers of adjacent dimming panels are perpendicular to each other.

[0007] In combination with the first aspect, in a possible implementation, the first electrode layer is divided into at least two first electrode sub-blocks; the first lead is divided into at least two first sub-leads whose number is the same as the first electrode sub-blocks, and one end of each first sub-lead is connected to one of the first electrode sub-blocks; the second electrode layer is divided into at least two second electrode sub-blocks whose number is the same as the first electrode sub-blocks, and each second electrode sub-block coincides with the projection of the first electrode sub-block at the corresponding position; the second lead is divided into at least two second sub-leads whose number is the same as the second electrode sub-blocks, and one end of each second sub-lead is connected to one of the second electrode sub-blocks.

[0008] In combination with the first aspect, in a possible implementation manner, two adjacent dimming panels are bonded together using PVB glue.

[0009] In a second aspect, another embodiment of the present invention provides a camera lens, comprising the dimming filter described above.

[0010] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0011] The dimming filter provided in the embodiment of the present application, when actually used, can adjust the external voltage to the corresponding voltage driving value according to the amount of light entering the user's requirements by passing an external voltage through the dimming panel and the second lead, so as to adjust the brightness of each dimming panel and thus the amount of light entering the camera, thereby realizing stepless adjustment of the transmittance of the dimming filter, without the need to frequently replace the dimming filter, and making it more convenient for users to use. When the external environment is too bright or a special chromatic environment is required, the degree of dimming can be freely selected according to the brightness of the external light, and a specific color filter can be selected according to the specific scene. The ideal light intake effect can be obtained by changing the driving voltage, or the driving voltage can be gradually changed to achieve a gradual adjustment, making the filter switching process simpler, and a variety of color changes can be obtained without switching filters, thereby improving the user's photography experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0013] Figure 1 A front view of a dimming filter provided by an embodiment of the present application;

[0014] Figure 2 for Figure 1 Right view of the provided dimming filter;

[0015] Figure 3 A right side view of a dimming filter provided by another embodiment of the present application;

[0016] Figure 4 This is a front view of a dimming filter provided in yet another embodiment of the present application.

[0017] Icon: 1-dimming panel; 11-first lead; 12-second lead; 13-FPC; 2-magnetic ring frame; 3-PVB glue. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0020] Please refer to Figures 1 to 4 As shown, an embodiment of the present invention provides a dimming filter, including a dimming panel 1 and a magnetic ring frame 2.

[0021] The magnetic ring frames 2 include two, and at least one dimming panel 1 is sequentially stacked between the two magnetic ring frames 2 .

[0022] The magnetism of the opposing surfaces of the two magnetic ring frames 2 is opposite, and the mutual attraction between the two magnetic ring frames 2 can clamp and fix at least one dimming panel 1 disposed between the two magnetic ring frames 2, so that at least one dimming panel 1 is sequentially stacked and fixed. At the same time, it is convenient to increase or decrease or replace the dimming panel 1 according to needs, and only needs to easily remove the magnetic ring frame 2 for replacement, and then attract the two magnetic ring frames 2 to each other.

[0023] Generally, in order to fit the camera lens, the dimming panel 1 is circular in shape. The shape of the magnetic ring frame 2 is adapted to the shape of the dimming panel 1 .

[0024] The magnetic ring frame 2 can be made of an integral magnet, or can include a plastic frame, and a plurality of magnet blocks are embedded in a circular array on the plastic frame.

[0025] Each dimming panel 1 includes a first lead 11, a second lead 12, a sealant, and a first glass substrate, a first electrode layer, a first orientation layer, a dye liquid crystal layer, a second orientation layer, a second electrode layer, and a second glass substrate arranged in sequence. One end of the first lead 11 is connected to the first electrode layer, one end of the second lead 12 is connected to the second electrode layer, and the outer circles of the first glass substrate and the second glass substrate are bonded by the sealant.

[0026] The first lead 11 and the second lead 12 are designed to be bound by FPC13 and led out by welding wires, and the PCB board is omitted, which can ensure the normal use of the magnetic ring frame 2. After the first lead 11 and the second lead 12 are led out, they are connected to the controller. There are two ways to adjust the controller. The first way is to adjust different amounts of light by changing the value of the external voltage. The second way is that the user sets the amount of light, and the controller applies the corresponding external voltage value according to the specified amount of light to complete the adjustment of the transmittance.

[0027] The orientation angles of the first orientation layer and the second orientation layer are specific angles, such as 45°, 90°, and 180°.

[0028] When the dimming panels 1 include more than two, the dye liquid crystal layers of the two or more dimming panels 1 have the same or different colors, and the dye liquid crystals of the dye liquid crystal layers of adjacent dimming panels 1 are aligned perpendicular to each other.

[0029] For example, there can be one dimming panel 1. When there is one dimming panel 1, it can be one of gray, red, green and blue. At this time, the dimming filter is a single-color dimming filter, which can be used to adjust the light of the entire picture. By adjusting the transmittance of the dimming filter, the control of different light input amounts can be achieved.

[0030] There can be two dimming panels 1. When there are two dimming panels 1, the two dimming panels 1 can be one of the colors of gray, red, green and blue at the same time, which can better adjust the dimming amount of the dimming filter, so that the dimming range is larger, the dimming effect is better, and the cost performance is high. For example, if low transmittance is required, two dimming panels 1 are used at the same time. If high transmittance is required, one of the dimming panels 1 can be selected. Connect the first lead 11 and the second lead 12 of each layer of dimming panel 1 to different channels of the controller, and set the model and color of the dimming panel 1 used for each channel. By setting the required color and transmittance, the voltage is automatically adjusted to match the requirements.

[0031] When there are two dimming panels 1 , the two dimming panels 1 may have different colors, and each may select one color among gray, red, green and blue, thereby realizing two-tone dimming.

[0032] There can be three dimming panels 1, and the three dimming panels 1 are red, green and blue respectively, which can form a multi-color dimming filter. The applied voltage can be adjusted according to the color and transmittance required by the user to achieve the effect required by the user. Moreover, red, green and blue are the basic colors, and any desired color can be adjusted. Table 1 below shows the dark state value and bright state value of the dimming panel 1 with single layers of red, green and blue, respectively, as well as the dark state value and bright state value after the final superposition. It can be seen from Table 1 that the adjustment effect of the dimming filter is better. In practice, the dark state value and bright state value after the three layers are superimposed under different applied voltages can be obtained according to experiments. After recording the value, the applied voltage can be directly adjusted to the required value in actual application.

[0033] Table 1

[0034] Single layer dimming panel 1 Dark state value Bright value blue 37.8 64.1 red 38.5 63.7 green 38.4 65.3 Three layers of superposition 1.8 28.6

[0035] When there are three dimming panels 1 , the three dimming panels 1 may have the same color, or two of them may have the same color and the other one may have a different color, which can be set according to actual needs.

[0036] At least one dimming panel 1 is provided. When there are more than two dimming panels 1 , the dimming panels 1 are of various models and colors. Dimming filters of specific colors can be used for different scenes to achieve the best effect.

[0037] The dimming filter provided in the embodiment of the present application, when actually used, can adjust the external voltage to the corresponding voltage driving value according to the amount of light entering the user's requirements by passing an external voltage through the first lead 11 and the second lead 12, so as to adjust the brightness of each dimming panel 1, thereby adjusting the amount of light entering the camera, and can achieve stepless adjustment of the transmittance of the dimming filter, without the need to frequently replace the dimming filter, which is more convenient for users to use. When the external environment is too bright or a special chromatic environment is required, the degree of dimming can be freely selected according to the brightness of the external light, and a specific color filter can be selected according to the specific scene. The ideal light intake effect can be obtained by changing the driving voltage, and the driving voltage can also be gradually changed to achieve a gradual adjustment, making the filter switching process simpler, and a variety of color changes can be obtained without switching filters, thereby improving the user's photography experience.

[0038] Furthermore, the first electrode layer is divided into at least two first electrode sub-blocks. The first lead 11 is divided into at least two first sub-leads that are the same number as the first electrode sub-blocks, and one end of each first sub-lead is connected to a first electrode sub-block. The second electrode layer is divided into at least two second electrode sub-blocks that are the same number as the first electrode sub-blocks, and each second electrode sub-block overlaps with the projection of the first electrode sub-block at the corresponding position. The second lead 12 is divided into at least two second sub-leads that are the same number as the second electrode sub-blocks, and one end of each second sub-lead is connected to a second electrode sub-block.

[0039] The dimming filter of the embodiment of the present application divides the first electrode layer and the second electrode layer into at least two pieces, which can realize the partition processing of the dimming filter and realize the dimming of two or more zones, and the process is simple and easy to implement. For example, when the first electrode layer and the second electrode layer are divided into two pieces, when shooting specific scenes such as the sea level, the amount of light entering the lower half of the dimming filter can be controlled, and the upper half remains unchanged to suppress the highlighted part of the picture, so as to achieve the effect of a customized gradient filter according to the user's usage requirements. Of course, the entire dimming glass can also be divided into at least two pieces.

[0040] The number of blocks matches the number of sub-leads, that is, when the entire surface is driven, the number of first lead 11 and second lead 12 is one each. When divided into two blocks, the number of first lead 11 and second lead 12 is two each, and so on. When connecting the controller, different leads need to be connected to different channels to achieve independent adjustment. Partition control can be used as a gradient filter to shoot scenes such as sunset that require partitioned dimming light.

[0041] Furthermore, two adjacent dimming panels 1 are bonded together with PVB glue 3. Generally, when two or more dimming panels 1 are of the same color, bonding them with PVB glue 3 can make the entire dimming filter structure more stable.

[0042] Another embodiment of the present invention provides a camera lens, including the above-mentioned dimming filter, so that when the camera lens is actually used, by applying an external voltage to the first lead 11 and the second lead 12, the external voltage can be adjusted to the corresponding voltage driving value according to the amount of light entering the user's requirements, and the brightness of each dimming panel 1 can be adjusted to adjust the amount of light entering the camera, so that the dimming filter transmittance can be infinitely adjusted, and there is no need to frequently replace the dimming filter, which is more convenient for users to use. When the external environment is too bright or a special chromatic environment is required, the degree of light reduction can be freely selected according to the brightness of the external light, and a specific color filter can be selected according to the specific scene. The ideal light intake effect can be obtained by changing the driving voltage, and the driving voltage can also be gradually changed to achieve a gradual adjustment, making the filter switching process simpler, and a variety of color changes can be obtained without switching filters, thereby improving the user's photography experience.

[0043] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0044] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A dimming filter, characterized in that: Including dimming panel and magnetic ring frame; The magnetic ring frames include two, and at least one dimming panel is sequentially stacked between the two magnetic ring frames; Each dimming panel comprises a first lead, a second lead, a sealant, and a first glass substrate, a first electrode layer, a first alignment layer, a dye liquid crystal layer, a second alignment layer, a second electrode layer, and a second glass substrate arranged in sequence, one end of the first lead is connected to the first electrode layer, one end of the second lead is connected to the second electrode layer, and the outer circles of the first glass substrate and the second glass substrate are bonded by the sealant; When the dimming panels include more than two, the dye liquid crystal layers of the two or more dimming panels have the same or different colors, and the dye liquid crystals of the dye liquid crystal layers of adjacent dimming panels are aligned perpendicular to each other.

2. The dimming filter according to claim 1, characterized in that: The first electrode layer is divided into at least two first electrode sub-blocks; The first lead is divided into at least two first sub-leads whose number is the same as the first electrode sub-blocks, and one end of each first sub-lead is connected to one of the first electrode sub-blocks; The second electrode layer is divided into at least two second electrode sub-blocks which are the same in number as the first electrode sub-blocks, and each second electrode sub-block overlaps with a projection of the first electrode sub-block at a corresponding position; The second lead is divided into at least two second sub-leads whose number is the same as the second electrode sub-blocks, and one end of each second sub-lead is connected to one second electrode sub-block.

3. The dimming filter according to claim 1, characterized in that: Two adjacent dimming panels are bonded together using PVB glue.

4. A camera lens, comprising the dimming filter according to any one of claims 1 to 3.

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