Umbrella-shaped coating structure for optical filter

Abstract

The utility model provides an umbrella-shaped film coating structure for an optical filter, which relates to the technical field of optical filter film coating and comprises a base, a steam film coating source is arranged at the upper end of the base, a conical barrel is arranged at the upper end of the base, an umbrella stand is integrally arranged at the upper end of the conical barrel, at least six placing holes are arranged on the periphery of the umbrella stand, and the umbrella stand and the conical barrel are integrally arranged. A fixing piece is arranged on the outer edge of each placing hole; the fixing piece comprises a rubber ring and a rubber block, the inner side of the rubber ring is fixed to the outer edge of the containing hole, the rubber block is arranged on the inner side of the rubber ring, and a notch is formed in the inner side of each rubber block and used for abutting against the optical filter. According to the utility model, the optical filter is placed in the placing hole and located in the rubber ring, then the optical filter is pressed down continuously to enable the edge of the optical filter to abut against the inner side of the rubber block, and the notch in the rubber block can clamp the optical filter and limit the optical filter, so that the optical filter can be prevented from falling off due to vibration.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter coating technology field, concretely relates to a kind of umbrella-shaped coating structure for filter. BACKGROUND

[0002] Filter coating is mostly vapor coating, and vapor coating is a way of physical vapor deposition (PVD). Its basic principle is to heat the coating material to the evaporation state, so that its atoms or molecules escape. Under certain environmental conditions, these evaporated atoms or molecules will deposit on the surface of the substrate (here, the filter) to form a thin film. In this device, the coating material is heated by a vapor coating source to become a vapor state. The vapor diffuses inside the device. When the vapor encounters the surface of the filter, which is relatively low in temperature, the atoms or molecules in the vapor will condense on the surface of the filter due to the driving force generated by the temperature difference, gradually forming a coating layer.

[0003] For example, the prior art with application number CN201520189002.X discloses a filter coating machine, which includes a vacuum coating chamber. Inside the vacuum coating chamber, there is a vapor coating source and a coating umbrella. The coating umbrella is located above the vapor coating source. The coating umbrella includes an umbrella body, and a plurality of filter accommodating holes are provided on the umbrella body. The shape of the filter accommodating holes is adapted to the shape of the filter. The coating umbrella is connected to a lifting mechanism. The lifting mechanism drives the coating umbrella to move up and down. The lower end of the umbrella body is also connected to a vapor folding cylinder. The vapor folding cylinder has a large diameter at both ends and a small diameter in the middle. The upper end of the vapor folding cylinder is sealingly connected to the lower end of the umbrella body. An axial flow fan is provided in the middle of the vapor folding cylinder. The upper end of the vapor folding cylinder and the umbrella body form an evaporation zone.

[0004] The above-mentioned prior art is known through actual use. It mainly places the filter in the accommodating hole and changes the coating liquid into a gaseous state through the vapor coating source. The coating liquid condenses on the surface of the filter during the conveying process of the axial flow fan. However, the filter is easily vibrated when the axial flow fan rotates, which causes the filter to shift or loosen, thereby affecting the coating quality. Therefore, we improve the above-mentioned prior art according to actual use. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model aims to provide an umbrella-shaped coating structure for filter.

[0006] To achieve the technical purpose, the utility model discloses a scheme that an umbrella-shaped coating structure for optical filter, comprising a base, the upper end of base is provided with vapor deposition source, the upper end of base is provided with conical cylinder and the upper end of conical cylinder is integrally provided with umbrella stand, the periphery of umbrella stand is provided with at least six placing holes, and the outer edge of each placing hole is provided with fixing part.

[0007] Preferably, the upper end of the base is fixed with the conical cylinder through bolts, and the upper end of the conical cylinder is communicated with the umbrella stand.

[0008] Preferably, the conical cylinder is fixed with an axial flow fan through a fixing rod, the rotating shaft of the axial flow fan is fixed with a connecting rod, and the upper end of the connecting rod is integrally provided with a turbulence plate.

[0009] Preferably, one side of the turbulence plate is provided with a cambered surface.

[0010] Preferably, the six placing holes are arranged in a circular ring of the umbrella stand, and the outer edge of each placing hole is fixed with a rubber ring through glue.

[0011] Preferably, at least three rubber blocks are integrally arranged in the rubber ring.

[0012] Preferably, a threaded cap is threadedly installed on the periphery of each rubber ring, an external thread is arranged on the outer surface of each rubber ring, an internal thread is arranged on the inner wall of the threaded cap for cooperating with the external thread arranged on the outer surface of the rubber ring, and the outer end of the threaded cap is transparent. Beneficial effects

[0013] The utility model discloses an optical filter is placed in the rubber ring in the placing hole first, then continues to press down the optical filter and makes the edge of optical filter and the inner side of rubber block resist tight, and the notch in rubber block can clamp and limit the optical filter, can avoid that the optical filter is shaken and falls off, and simultaneously, after the optical filter is in the rubber ring, the back edge of the optical filter will resist tight with the rubber ring, the sealing property when the optical filter is coated is increased, and the optical filter is coated more evenly.

[0014] After the optical filter is placed in the placing hole, the threaded cap can be combined with the rubber ring, dustproof for the optical filter can be realized, and different placing holes can be sealed, preventing the gaseous coating solution from overflowing and wasting. DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of the utility model;

[0016] Figure 2 It is the section view schematic view of the utility model;

[0017] Figure 3 The fixed part of the utility model is exploded schematic view;

[0018] Figure 4 The utility model Figure 3 The enlarged schematic view at a is shown.

[0019] Wherein 1, base; 2, conical cylinder; 3, umbrella stand; 4, placing hole; 5, fixed part; 51, rubber ring; 52, rubber block; 53, screw cap; 54, notch; 6, vapor coating source; 7, axial flow fan; 8, connecting rod; 9, turbulence plate; 10, camber. DETAILED DESCRIPTION

[0020] The utility model will be further described in detail below in combination with the drawings and specific embodiments. In order to clearly and completely describe the technical scheme, the following embodiments are selected for description; based on the content recorded in the present application, other embodiments obtained without making creative labor all belong to the scope of protection of the utility model.

[0021] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientation or position relationships are all based on the orientation or position relationship shown in the drawings, and are only for the convenience of clearly describing the embodiments, and do not indicate or imply that the devices or elements referred to must have a specific orientation, so it cannot be understood as a limitation on the present application.

[0022] As Figures 1 to 4 shown, the embodiment of the application provides an umbrella-shaped coating structure for a filter, which comprises a base 1, the upper end of the base 1 is provided with a vapor coating source 6, the upper end of the base 1 is provided with a conical cylinder 2, and the upper end of the conical cylinder 2 is integrally provided with an umbrella stand 3, the periphery of the umbrella stand 3 is provided with at least six placing holes 4, and the outer edge of each placing hole 4 is provided with a fixed part 5; the fixed part 5 comprises a rubber ring 51 and a rubber block 52, the inner side of the rubber ring 51 is fixed with the outer edge of the placing hole 4, the inner side of the rubber ring 51 is provided with a rubber block 52 in the shape of a spherical ball, and the inner side of each rubber block 52 is provided with a notch 54 for clamping the edge of the filter.

[0023] The temperature of the filter coating is in the temperature range below 100 DEG C, which is more suitable for some temperature-sensitive filter materials or coating processes. For example, some organic filter materials may decompose or deform at high temperatures. When coating at low temperature, the adsorption of vapor atoms or molecules on the surface of the filter is mainly physical adsorption, and the formed coating layer is relatively loose. This coating method may be suitable for some cases where the film layer density is not high, but the performance of the filter itself is required to be high;

[0024] 100 - 300℃ range, many inorganic filter material in this temperature interval can obtain good effect of coating. At this temperature, the vapor atoms or molecules to the filter surface, in addition to physical adsorption, also will occur to a certain extent chemical adsorption and surface diffusion. For example, for some oxide coating material on the quartz filter coating, the temperature is 150 - 200℃, the coating atoms or molecules can better migration and arrangement on the filter surface, the formation of the coating layer is more dense, has good optical performance and stability;

[0025] Rubber ring 51 and rubber block 52 are made of fluorine rubber, which is a synthetic high molecular elastomer containing fluorine atoms in the main chain or side chain. It has excellent high temperature resistance, which is mainly due to the presence of fluorine atoms. The electronegativity of fluorine atom is very high, so the fluorine rubber molecular chain has strong stability and can resist thermal decomposition at high temperature. Fluorine rubber can be used for a long time in the temperature range of -20℃ - 200℃;

[0026] Reference Figure 2 The upper end of the base 1 is fixed with the conical cylinder 2 through bolts, and the upper end of the conical cylinder 2 is communicated with the umbrella stand 3. The axial flow fan 7 is fixed in the conical cylinder 2 through the fixed rod, the upper end of the rotating shaft of the axial flow fan 7 is fixed with the connecting rod 8, and the upper end of the connecting rod 8 is integrally provided with the turbulence plate 9. The side of the turbulence plate 9 is provided with the arc surface 10, which can stir and guide the gaseous coating solution to the filter, increasing the coating rate.

[0027] Reference Figure 3 And Figure 4 The six placing holes 4 are arranged in a circular ring of the umbrella stand 3, and the outer edge of each placing hole 4 is fixed with the rubber ring 51 through glue solution. The rubber ring 51 is integrally provided with at least three rubber blocks 52;

[0028] Reference Figure 3 The outer periphery of each rubber ring 51 is provided with a threaded cap 53, the outer surface of each rubber ring 51 is provided with an external thread, the inner wall of the threaded cap 53 is provided with an internal thread matched with the external thread arranged on the outer surface of the rubber ring 51, and the outer end of the threaded cap 53 is transparent for observing the filter.

[0029] Working principle: first, place the filter in the placing hole 4 in the rubber ring 51, then continue to press the filter to make the edge of the filter abut against the inner side of the rubber block 52, and the notch 54 in the rubber block 52 can clamp and limit the filter to avoid falling off due to vibration. At the same time, after the filter is placed in the rubber ring 51, the edge of the back surface of the filter abuts against the rubber ring 51, increasing the sealing property of the filter during coating, so that the filter coating is more uniform;

[0030] After the filter is placed in the placing hole 4, the threaded cover 53 can be combined with the rubber ring 51, the filter can be prevented from dust, and the different placing holes 4 can be sealed, so that the coating solution in the gaseous state is prevented from overflowing and wasting.

[0031] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any slight modification, equivalent replacement and improvement of the above embodiment according to the technical essence of the present application should be included in the protection scope of the technical scheme of the present application.

Claims

1. An umbrella-shaped coating structure for a filter, comprising a base (1), wherein a vapor deposition source (6) is disposed at the upper end of the base (1), a conical cylinder (2) is disposed at the upper end of the base (1), and an umbrella frame (3) is integrally disposed at the upper end of the conical cylinder (2), wherein at least six placement holes (4) are disposed around the umbrella frame (3), characterized in that: Each of the placement holes (4) is provided with a fastener (5) on its outer edge; The fixing component (5) includes a rubber ring (51) and a rubber block (52). The inner side of the rubber ring (51) is fixed to the outer edge of the placement hole (4). A rubber block (52) is provided on the inner side of the rubber ring (51). Each rubber block (52) has a notch (54) on its inner side for pressing against the filter.

2. The umbrella-shaped coating structure for a filter according to claim 1, characterized in that: The upper end of the base (1) is fixed to the conical cylinder (2) by bolts, and the upper end of the conical cylinder (2) is connected to the umbrella frame (3).

3. The umbrella-shaped coating structure for a filter according to claim 2, characterized in that: An axial flow fan (7) is fixed inside the conical cylinder (2) by a fixing rod. A connecting rod (8) is fixed to the upper end of the rotating shaft of the axial flow fan (7). A turbulence plate (9) is integrally provided at the upper end of the connecting rod (8).

4. The umbrella-shaped coating structure for a filter according to claim 3, characterized in that: One side of the turbulence plate (9) is provided with an arc surface (10).

5. The umbrella-shaped coating structure for a filter according to claim 1, characterized in that: The six placement holes (4) are arranged in a circular ring around the umbrella frame (3), and the outer edge of each placement hole (4) is fixed to a rubber ring (51) by adhesive.

6. The umbrella-shaped coating structure for a filter according to claim 5, characterized in that: At least three rubber blocks (52) are integrally provided inside the rubber ring (51), and each rubber block (52) has a notch (54) on its inner side for clamping the edge of the filter.

7. The umbrella-shaped coating structure for a filter according to claim 6, characterized in that: Each of the rubber rings (51) is provided with a threaded cap (53) on its outer thread. Each of the rubber rings (51) has an external thread on its outer surface. The inner wall of the threaded cap (53) is provided with an internal thread for engaging with the external thread on the outer surface of the rubber ring (51). The outer end of the threaded cap (53) is transparent.

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