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Gradient gray filter coating device and coating method thereof

A filter and plating technology used in the field of optical filters to achieve the effect of improving linearity

Active Publication Date: 2019-04-19
JIANGMEN KASE OPTICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to make the filter have a gradient effect, it is necessary to use a device for coating a gradient gray filter. The coating device for the gradient gray filter includes a baffle for blocking the film material. The graduated linear effect of the filter yields a large benefit

Method used

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  • Gradient gray filter coating device and coating method thereof
  • Gradient gray filter coating device and coating method thereof
  • Gradient gray filter coating device and coating method thereof

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Embodiment Construction

[0026] Gradient gray filter is a kind of commonly used physical filter, also known as GND filter. It is mainly used to balance the light ratio, so that the dark part and highlight part of the picture are reasonably exposed. It is suitable for the environment with large light ratio, such as for shooting daylight Scenes at dusk. The gradient gray filter structure includes a substrate 110 and a film layer 120. The film layer 120 contains a black material. In order to achieve a gradient effect, the thickness of the film layer 120 must show a gradually decreasing trend from one side to the other, so the gradient One side of the gray filter is gray-black in color, and gradually fades to the other side, so that the other side becomes transparent.

[0027] refer to figure 1 , the basic structural diagram of a gradient gray filter of a gradient gray filter coating device of the present invention. figure 1 In the case of single-side plating, the film layer 120 is attached to one surfa...

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Abstract

The invention adopts a GND filter plating device and a plating method thereof. The GND filter plating device comprises a film material evaporating device, a film coating umbrella disk, a baffle jig and a baffle jig support. The film material evaporating device can evaporate a film material, the evaporated film material passes through the baffle jig and deposits on the surface of a substrate in a gaseous phase form, and the evaporation coating process is achieved. Due to the fact that one end of the baffle jig is in a sawtooth shape composed of a limited number of isosceles triangles, linear transition from complete shielding to complete non-shielding is achieved, the thickness of a film layer on the substrate is in a linear diminishing tendency from one side to the other side, the filter can achieve a gradual changing effect, and the linearity of the filter can also be improved.

Description

technical field [0001] The invention relates to the field of optical filters, in particular to a gradient gray filter coating device and a coating method thereof. Background technique [0002] Gradient gray filter is a commonly used physical filter, also known as GND filter, the upper half of the gradient gray filter lens is gray black, the lower half is transparent, mainly used to balance the light ratio, so that Both the dark part and the highlight part of the picture are properly exposed, which is suitable for environments with high light ratios, such as sunrise and dusk scenes. The gradient gray filter structure includes a substrate and a film layer. The film layer contains black materials. In order to achieve a gradient effect, the thickness of the film layer must show a gradual decreasing trend from one side to the other. Therefore, the gradient gray filter The color is gray-black on one side and gradually fades to the other side, so that the other side becomes transp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/04C23C14/24G02B1/10G02B5/20
CPCC23C14/0015C23C14/044C23C14/24G02B1/10G02B5/20
Inventor 张卫良
Owner JIANGMEN KASE OPTICS CO LTD
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