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CN-224216976-U - Filter capable of adjusting ND and GND through voltage

CN224216976UCN 224216976 UCN224216976 UCN 224216976UCN-224216976-U

Abstract

The utility model provides a filter capable of adjusting ND and GND through voltage, which comprises a control unit and a filter unit, wherein the filter unit comprises a first ITO conductive substrate and a second ITO conductive substrate, a sealed cavity is formed between the first ITO conductive substrate and the second ITO conductive substrate in a sealing mode, a dichroic dye/liquid crystal composite layer is arranged in the sealed cavity, PI films are respectively adhered to the outer sides of the first ITO conductive substrate and the second ITO conductive substrate, the control unit comprises at least one flexible circuit, and one end of one flexible circuit is clamped between the first ITO conductive substrate and the second ITO conductive substrate and applies an electric field. The utility model adjusts the orientation of the dichroic dye molecules by adjusting the electric field intensity by adjusting the voltage, thereby changing the transmittance, realizing the wide dynamic range, quick response, stepless transmittance control and intelligent adjustment of ND and GND filters by using an electric control liquid crystal technology, being a revolutionary alternative scheme of the traditional mechanical filter, solving the complex steps of manually replacing the filter when the scene and the light are changed in the shooting process and having no limitation on the shape.

Inventors

  • YANG MINGZHENG
  • ZHANG YONG

Assignees

  • 中山市兴盛光学五金有限公司

Dates

Publication Date
20260508
Application Date
20250528

Claims (8)

  1. 1. The filter is characterized by comprising a control unit and a filter unit, wherein the filter unit comprises a first ITO conductive substrate (10) and a second ITO conductive substrate (20), a sealed cavity is formed between the first ITO conductive substrate (10) and the second ITO conductive substrate (20) in a sealed mode, a dichroic dye/liquid crystal composite layer (30) is arranged in the sealed cavity, PI films (40) are respectively adhered to the outer sides of the first ITO conductive substrate (10) and the second ITO conductive substrate (20), the control unit comprises at least one flexible circuit (50), and one end of one flexible circuit (50) is clamped between the first ITO conductive substrate (10) and the second ITO conductive substrate (20) and an electric field is applied.
  2. 2. The filter for adjusting ND and GND according to claim 1, wherein a third ITO conductive substrate (60) is arranged between the first ITO conductive substrate (10) and the second ITO conductive substrate (20), a sealed cavity is formed between the first ITO conductive substrate (10) and the third ITO conductive substrate (60) in a sealed manner, the second ITO conductive substrate (20) and the third ITO conductive substrate (60) are sealed and bonded between the second ITO conductive substrate and the third ITO conductive substrate, a dichroic dye/liquid crystal composite layer (30) is arranged in the sealed cavity, flexible circuits (50) are respectively clamped between the first ITO conductive substrate (10) and the third ITO conductive substrate (60) and used for applying an electric field, and PI films (40) are respectively adhered to the outer sides of the first ITO conductive substrate (10) and the second ITO conductive substrate (20).
  3. 3. The filter according to claim 1 or 2 or the above-mentioned voltage-regulating ND, GND, wherein the first ITO conductive substrate (10) comprises a first glass substrate, a silicon oxide layer and a first ITO film which are sequentially arranged, and the second ITO conductive substrate (20) comprises a second glass substrate, a silicon oxide layer and a second ITO film which are sequentially arranged.
  4. 4. The filter according to claim 2 or a voltage-regulating ND, GND, wherein the third ITO conductive substrate (60) comprises a left-side ITO conductive substrate and a right-side ITO conductive substrate, each comprising a third glass substrate, a silicon oxide layer, and a third ITO film, which are sequentially arranged.
  5. 5. The filter for adjusting ND and GND by voltage according to claim 1, characterized in that a spacer support column is provided in the closed cavity between the first ITO conductive substrate (10) and the second ITO conductive substrate (20), said spacer support column connecting the first ITO conductive substrate (10) and the second ITO conductive substrate (20).
  6. 6. The filter according to claim 1, wherein the filter unit comprises a front frame body (70) and a rear frame body (80), the front frame body (70) and the rear frame body (80) are clamped back and forth to form a filter cavity therebetween, and the first ITO conductive substrate (10) and the second ITO conductive substrate (20) are clamped in the filter cavity.
  7. 7. A filter for regulating ND, GND by voltage according to claim 1, characterised in that said control unit comprises a control module (110) and a battery (120) connected to the control module (110), said flexible circuit (50) being connected to the control module (110) and being controlled by the release voltage.
  8. 8. The filter according to claim 7, wherein the control unit comprises a driving electric control front plate (90) and a driving electric control rear plate (100), and the control module, the battery and the flexible circuit (50) are arranged between the driving electric control front plate (90) and the driving electric control rear plate (100).

Description

Filter capable of adjusting ND and GND through voltage Technical Field The utility model relates to the technical field of filters, in particular to a filter capable of adjusting ND and GND through voltage, which is suitable for the fields of photography, video recording, placement and the like. Background The conventional ND filter (also called NeutralDensity Filters (neutral density filter), also called a light-reducing lens) for photography is a filter for reducing the amount of light entering a camera lens, and the GND filter (also called Graduated NeutralDensity Filters "gradient neutral gray density light-reducing lens", also called "gradient gray lens") is a filter, which is made of simple optical glass or optical plastic, and each specification of ND and GND filters is made of separate glass (or plastic). When the shooting scenes are different, namely the light brightness of shooting or video recording is different, ND and GND filters with different specifications are needed to be used for shooting or recording ideal pictures. The video recording is different from the traditional shooting in that the video recording limits the exposure time of each frame of picture in the video, namely when the external environment changes, especially when the light intensity changes, the pictures in the video recording can generate bright or dark conditions, and at the moment, the ND and GND filters can only be manually replaced, so that a plurality of filters with different gears are carried to cope with different scenes, and the frequent replacement of the filters is very troublesome, and the shooting or recording is also required to be interrupted. The VND filter (VND filter, collectively referred to as Variable Neutral density filter DENSITY FILTERS) is generally composed of two pieces of glass, and can provide adjustment of a plurality of gears, so that it can maintain good imaging quality under different light conditions, unlike the ND filter of fixed gears, the VND filter allows a photographer to flexibly adjust the light quantity according to the field light conditions, thereby avoiding the trouble of changing the ND filter of different gears. However, the time for shifting the VND filter may take several seconds, and the gear span is not large (typically only 4-5 gears), the color shift of each gear may be different, and only a circular filter may be used, so that a square VND filter cannot be processed at present. The effect is also that a large space is required to be lifted. The utility model provides a new technical scheme under the background. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a filter for regulating ND and GND through voltage, which adopts the following technical scheme: The filter comprises a control unit and a filter unit, wherein the filter unit comprises a first ITO conductive substrate and a second ITO conductive substrate, a sealed cavity is formed between the first ITO conductive substrate and the second ITO conductive substrate in a sealing mode, a dichroic dye/liquid crystal composite layer is arranged in the sealed cavity, PI films are respectively adhered to the outer sides of the first ITO conductive substrate and the second ITO conductive substrate, the control unit comprises at least one flexible circuit, and one end of one flexible circuit is clamped between the first ITO conductive substrate and the second ITO conductive substrate and an electric field is applied. According to the filter for adjusting ND and GND through the voltage, a third ITO conductive substrate is arranged between the first ITO conductive substrate and the second ITO conductive substrate, a sealed cavity is formed between the first ITO conductive substrate and the second ITO conductive substrate in a sealing mode, the second ITO conductive substrate and the third ITO conductive substrate are sealed in a sealing mode, a dichroic dye/liquid crystal composite layer is arranged in the sealed cavity, flexible circuits are respectively clamped between the first ITO conductive substrate and the third ITO conductive substrate and between the second ITO conductive substrate and the third ITO conductive substrate, the second ITO conductive substrate and the third ITO conductive substrate are respectively clamped with the flexible circuits, an electric field is applied, and PI films are respectively adhered to the outer sides of the first ITO conductive substrate and the second ITO conductive substrate. According to the filter for adjusting ND and GND through the voltage, the first ITO conductive substrate comprises a first glass substrate, a silicon dioxide layer and a first ITO film which are sequentially arranged, and the second ITO conductive substrate comprises a second glass substrate, a silicon dioxide layer and a second ITO film which are sequentially arranged. According to the fil