KR20190008044A - CCTV dome lens anti- reflection coated by vacuum coating method and its product method - Google Patents

Abstract

The present invention relates to a CCTV dome lens with an anti-reflection coating layer deposited by vacuum deposition and a manufacturing method thereof, in which a vacuum deposition coating layer is formed on each inner and outer surfaces of the CCTV dome lens and the coating layer is formed by sequentially forming SiO_2, TiO_2, and a layer from the lens surface, and the present invention provides an anti-reflection coating on both the outer and inner surfaces of the CCTV dome lens and thus improving a light emittance, thereby improving quality and performance of the CCTV.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a CCTV dome lens having an anti-reflective coating layer formed by vacuum deposition,

The present invention relates to a CCTV dome lens having an anti-reflective coating layer formed by vacuum deposition, and a method of manufacturing the CCTV dome lens. More particularly, the present invention relates to a CCTV dome lens A CCTV dome lens having an anti-reflection coating layer formed thereon, and a manufacturing method thereof.

Generally, the CCTV dome lens is coated with a vacuum evaporation surface. The deposition technique of the lens is described in Patent Registration No. 10-1529953, which is manufactured by a high-temperature compression molding method using a high-precision grinding core And an aspherical lens coated by depositing a thin film on the surface thereof,

Wherein the optical module has a shape error (PC) of 0.8 to 1 탆, a surface roughness (Ra) of 15 to 20 탆, and a transmittance of 95 to 99.5%

- It is processed through ultra-precision grinding with diamond wheel,

- Hardness of 92.5 ~ 97.5HRA, Transverse rupture strength of 1.5 ~ 1.7GPa, Fracture toughness of 4.5 ~ 5.5MPa, made of cemented carbide (WO, Co 0.5wt% , A density of 15 to 15.8, Young's Modules of 650 to 670 GPa, and a coefficient of thermal expansion of 4.4 to 4.6 x 10 < -6 > / K,

A DLC film and a transition metal (Re-Ir) film are coated on the surface,

In the aspherical lens,

A thin film made of a Pt-Ir film, a DLC film, a polyimide film, or the like is formed by injecting nitrogen gas into a chamber provided with a molding core, heating the molding core and the lens molding to a molding temperature, A Re-based alloy film, a TIAIN film, and a TICN film, or a combination of these films,

Between the molding core and the thin film,

An oxide which is a compound of oxygen with at least one carbon group element selected from among carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb) and fluorobrom (Fl) There is disclosed an optical system module for a high-definition surveillance camera characterized in that the adhesion between the molding core and the thin film is increased by depositing an intermediate film made of an oxynitride which is a compound of nitride, which is a compound of an element and nitrogen.

No. 20-0241223 discloses a circular primary rotating plate 16 at the lower end of a rotating shaft 10 extending from the upper portion of the chamber 12, Type fixed gear 20 is fixed around the rotary shaft 10 and a plurality of shafts 22 are arranged at regular intervals in the primary rotary plate 16 and a transmission gear 24 is installed at an upper end of each shaft 22 And each secondary shaft 26 is provided at the lower end of each shaft 22 so that each secondary shaft 26 rotates in accordance with the rotation of the primary shaft 16 In the vacuum evaporator for a small lens coating, a plurality of shafts 28 are divided into inner and outer concentric circles in the secondary swash plate 26 so as to be vertically rotatable, A chain gear 30 is installed at the upper end of each shaft 28 and a tertiary rotary plate 32 is provided at the lower end of the rotary shaft 26. The respective axes 22 of the secondary rotary plate 26, The fixed gear 34 is installed and rotated on the chain gears 30 of the respective shafts 28 of the tertiary turntable 32 to cause the tertiary turntable 32 to rotate relative to the rotation of the secondary turntable 26 , And a lens carrier (50) having a plurality of lenses (48) to be coated on the tertiary swash plate (32) is coupled to the vacuum pump.

In general, the principle of the vacuum deposition is that the coating compound evaporates on the lower side of the chamber and is deposited on the surface of the lens, and the deposited coating film is formed into a micropillar structure. Therefore, in general, the fine columnar structure is inclined toward the incidence direction of the evaporated particles, and therefore, when the product is a lens, the arrangement of the fine columnar structures may be changed according to the curved shape of the lens. Particularly, in the case of a lens, the shape of the lens (radius of curvature R), the size (diameter?), And the structure of the rotating device are closely related to the structure of the coating film. Even if a lens having a small radius of curvature is deposited at the same rate, The amount of deposition or the micropillar structure along the position of the surface (center portion, edge portion) may be different from that deposited on the lens having a surface near the plane.

However, the above-mentioned conventional techniques are disadvantageous in that only the outer surface of the CCTV dome lens is coated so that the surface including the inner surface is easily contaminated and is not transparent and the quality is deteriorated.

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a CCTV dome lens 50 that simultaneously revolves and rotates, thereby vacuum- depositing the outer and inner surfaces, A CCTV dome lens having an anti-reflective coating layer formed by vacuum deposition on the inner and outer surfaces of the inner and outer surfaces of the inner and outer surfaces, the inner and outer surfaces of which are not easily contaminated and improved in quality, and a manufacturing method thereof.

The present invention relates to a CCTV dome lens having an anti-reflective coating layer formed on its inner and outer surfaces by vacuum deposition, and a method of manufacturing the CCTV dome lens, wherein a coating layer is formed on the inner and outer surfaces of the CCTV dome lens _{, 2, and a} layer are sequentially formed.

And an anti-reflective coating layer is formed on the inner and outer surfaces of the CCTV dome lens, respectively.

Therefore, according to the present invention, by applying anti-reflective coating on both the outer and inner surfaces of the CCTV dome lens, the light transmittance is improved and a clear image can be seen. As a result, the quality is improved and the performance of CCTV is improved.

1 is a schematic view showing a fixing device for an outer surface vacuum deposition coating in a CCTV dome lens of the present invention
Fig. 2 is a detailed view of Fig. 1
3 is a view showing the state of use of the CCTV dome lens of the present invention
Fig. 4 is a view showing the state of use of the CCTV dome lens of the present invention
Figure 5 is a photograph of the CCTV dome lens fixing device of the present invention
6 is a cross-sectional view of a CCTV dome lens of the present invention, in which an anti-

The present invention relates to a CCTV dome lens having an anti-reflective coating layer formed on its inner and outer surfaces by vacuum deposition, and a method of manufacturing the CCTV dome lens, wherein a coating layer is formed on the inner and outer surfaces of the CCTV dome lens _{, 2, and a} layer are sequentially formed.

In place of the TiO ₂ , ZrO _2, or Nb ₂ Ox coating layer is formed.

The present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a detailed view of FIG. 1, FIG. 3 is a view of the CCTV dome lens according to the present invention, and FIG. 4 is a view showing the CCTV dome lens of the present invention. FIG. 5 is a photograph of a CCTV dome lens fixing device of the present invention, and FIG. 6 is a sectional view of an anti-reflection coating layer formed on the CCTV dome lens of the present invention.

In the CCTV dome lens, a coating layer is formed on the inner and outer surfaces of a CCTV dome lens, and the coating layer is formed of SiO _2, TiO _{2 and a} layer sequentially from the lens surface. Due to the SiO _2, TiO _2, layer, the CCTV dome lens has an anti-reflection effect, which improves the light transmittance. Preferably the coating layer is _{SiO 2, TiO 2, SiO 2} , TiO 2, SiO 2 Layers are sequentially formed. The SiO ₂ The coating layer is a lower index material and TiO ₂ The coating layer is a high index material. In addition, the present invention provides a TiO ₂ coating layer Instead of ZrO _2, or Nb ₂ Ox coating layer may be formed.

On the other hand, the present invention is to form an antifogging coating on the SiO _2, TiO _2, wherein the anti-reflective layer the outer surface coating layer, the surface-active material or TiO ₂ To form a hydrophilic coating layer, which is a fog-proof coating layer. According to the experimental results, the transmittance of SiO _{2 and} TiO ₂ is 89% when not coated, 94% when only the outer surface is coated, and 97% is coated on both surfaces. In the present invention, for the outer surface vacuum deposition coating in the CCTV dome lens, a fixing device for the outer surface vacuum deposition coating in the CCTV dome lens of the present invention is used.

Therefore, according to the present invention, by applying anti-reflective coating on both the outer and inner surfaces of the CCTV dome lens, the light transmittance is improved and a clear image can be seen. As a result, the quality is improved and the performance of CCTV is improved.

The present invention relates to a fixing device for external surface vacuum deposition coating in a CCTV dome lens, wherein a rotary plate (10) of a CCTV dome lens fixture (100) installed inside a chamber is rotated by a motor, The CCTV dome lens is coupled to the lower driving plate 30 coupled to the intermediate rotary shaft 20 and rotated so that the outer surface and the inner surface of the CCTV dome lens are sequentially vacuum-deposited, will be.

In the CCTV dome lens fixing device 100, the rotational force of the motor 1 installed at the upper portion is transmitted to the rotary plate 10 through the gear, the rotary plate 10 rotates about the rotary axis 11, 10 are coupled to an intermediate rotation shaft 20 formed on the outer periphery of the rotary shaft 10 and gears are coupled to the gear teeth and the gears are vertically installed on the outer periphery of the rotary shaft 10, A driven bevel gear is provided at the lower end of the intermediate rotary shaft 20 and a driven bevel gear is connected to the driven bevel gear by being inclined and rotated, And the lower driving shaft is connected to both ends of the lower driving shaft through a center of a supporting plate at both ends of the lower driving plate, a center bevel gear is connected to the lower driving shaft, That there will be a CCTV dome lens 50 is flipped coupled in pairs.

In the present invention, a CCTV dome lens fixture (100) is installed radially around a rotating plate (10) installed inside a chamber, and the rotating plate is rotated by a motor so that the inner and outer surfaces of the CCTV dome lens are vacuum deposited. In the present invention, it is preferable that the outer surface is first vacuum-deposited and then the inner surface is sequentially vacuum-deposited.

The rotation force of the motor 1 installed on the upper part of the CCTV dome lens fixture 100 is transmitted to the rotation plate 10 through the gear so that the rotation plate 10 rotates about the rotation axis 11, A gear tooth is formed on the outer circumference and a gear is coupled to the gear teeth. The intermediate rotation shaft 20 is coupled to the gear so that the rotational force of the rotation plate 10 rotates the intermediate rotation shaft 20 through a gear and a driven bevel gear is disposed at the lower end of the intermediate rotation shaft 20 And the driven bevel gear is connected to the lower driving shaft in the lower driving plate 30. The driven bevel gear is connected to the lower driving shaft inside the lower driving plate 30 by being inclinedly connected to the driven bevel gear. Both ends of the lower drive shaft are installed through the center of the support plate at both ends of the lower drive plate. A central bevel gear is connected to the lower driving shaft, and a CCTV dome lens 50 is symmetrically coupled to both sides of the central bevel gear. Therefore, when the motor is rotated, the CCTV dome lens 50 simultaneously performs both the revolving and the rotating so that the outer and inner surfaces are sequentially vacuum-deposited, so that the inner and outer surfaces are all deposited. First, as shown in the drawing, the outer surface of the dome lens is vacuum-deposited by fixing it with a fixing device such as a bolt, a clip or a pin, The fixing device of the fixed dome lens is loosened, and the inner surface is vacuum-deposited when the opening of the dome lens is fixed with the fixing device so that the opening of the dome lens becomes the top surface. The fixing device has a disk shape and a groove is formed in the center so that a dome lens is placed.

The vacuum deposition technique uses a conventional technique, and as described in the prior art Patent Registration No. 20-0241223 described in the background art of the present invention, the principle of vacuum deposition is generally that the coating compound evaporates from the lower side of the chamber The applicant of the present invention discloses a vacuum evaporation method for depositing evaporation material on a work in a chamber. The evaporation material is deposited on a ceiling of the chamber by a rotary motor 700) is installed in the crucible (600), a plurality of crucibles (600) are installed in the rotary plate (700), and the evaporation material (200) is placed in each crucible (600); The high temperature electrons generated in the cathode filament of the electron gun 100 installed in the chamber 800 are guided to the crucible 600 of the rotary plate 700 to evaporate the evaporation material 200 inside the crucible 600 Evaporating the evaporated material (200) into the work (400) located under the chamber (800);

The electron gun 100 connects a power source to the cathode filament 110 and a magnet is installed in the cathode filament 110 so as to close the electrons and a field magnet The electrons generated by the cathode filament 110 of the electron gun 100 are guided to the crucible 600 of the rotary plate 700 so that the crucible 600, The evaporation material 200 in the chamber 600 is evaporated and the evaporated material evaporates and flows into the work 400 located under the chamber 800. The chamber 800 is filled with the ion source 500 The evaporation material 200 evaporated in the crucible 600 flows into the work 400 located under the chamber 800 and is deposited and deposited by the ion source 500, A mask 300 is installed between the workpiece 400 The lower part of the crucible 600 is a hole in which the vaporized evaporated material 200 is blown into the workpiece 400 located under the chamber 800 and is punched so that the electron gun 100 is also pushed into the chamber 800, and an electron beam shutter 900 is additionally provided between the rotating plate 700 and the mask 300. The detailed description of the vacuum deposition method is omitted here .

Accordingly, the present invention has a remarkable effect that both the inner and outer surfaces of the CCTV dome lens are vacuum-deposited by sequentially vacuum-depositing the outer surface and the inner surface by rotating and rotating the CCTV dome lens 50 at the same time.

In addition, the present invention has a remarkable effect of improving the quality of CCTV and enhancing the quality of the CCTV dome lens.

100: CCTV dome lens fixture 10: spindle
20: intermediate rotating shaft 30: lower driving plate
11: rotating shaft 1: motor
30: Lower drive plate 31: Lower drive shaft
50: CCTV Dome Lens

Claims (4)

A CCTV dome lens having an anti-reflective coating layer formed by vacuum evaporation, wherein a coating layer is formed on the inner surface of the CCTV dome lens, wherein the coating layer sequentially forms SiO _2, TiO _2,
The CCTV dome lens according to claim 1, wherein the coating layer forms a coating layer on the inner and outer surfaces of the CCTV dome lens, respectively,
The method according to claim 1, wherein, instead of the TiO ₂ , ZrO _2, or Nb ₂ Ox coating layer is formed on the surface of the non-reflective coating layer.
A CCTV dome lens having an anti-reflective coating layer formed by vacuum deposition, characterized in that an anti-reflective coating layer is formed on the inner and outer surfaces of the CCTV dome lens by the method of any one of claims 1 to 3.

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