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Self-dedusting monitoring camera lens and preparation method thereof

A surveillance camera, self-dust removal technology, applied in ion implantation plating, coating, instruments, etc., can solve the problems of small dust size, adhesion, difficulty in removal, dust reduction, etc., and achieve excellent self-cleaning effect and hydrophobicity. Good, keep clean effect

Active Publication Date: 2020-05-29
SHENZHEN ZHONGTIAN GALAXY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Surveillance cameras are ubiquitous in today's society, whether in public places or private use, there are traces of surveillance cameras, but the lens of the surveillance camera tends to accumulate more dust in a short period of time during use, which reduces the visibility of the lens and affects observation and monitoring. Monitoring effect
At the same time, since most surveillance cameras are installed in higher places, it is not convenient for manual cleaning, and even manual cleaning will quickly accumulate a lot of dust due to static electricity on the surface of the lens.
Therefore, it is very necessary to study a non-artificial automatic dust removal method, but the automatic dust removal scheme of the existing technology of surveillance cameras cannot solve this technical problem very well
For example, the dust-removable camera with the publication number CN108134891A is provided with a slide rail on the lens, the slide rail is provided with a dust-removable electric brush and is controlled by a built-in motor to slide back and forth to realize the purpose of automatically cleaning the dust on the lens. The main shortcomings of the solution are: (1) the mirror surface of the lens is very easy to scratch under physical friction and cause permanent damage; (2) the brush only plays the role of raising dust, although some dust is under the action of gravity or sharp The bottom will fall or float away and be removed, but there are still cases where most of the dust re-adheres to the mirror surface
[0003] Neither natural dust removal nor mechanical dust removal can solve the problem of lens self-dust removal very well, because natural dust removal uses natural forces, such as wind blowing, rain washing or the natural action of gravity to remove dust, and the dust removal effect is poor; mechanical dust removal uses Dust removal by mechanical methods such as wiping, blowing, vibration or ultrasonic waves, due to the small size of the dust and strong adhesion, is difficult to remove, and the mechanical method is easy to damage the C lens of the camera; therefore, for the existing Due to the existing problems in the technology, it is particularly important to provide a lens self-dust removal technology with automatic dust removal, good dust removal effect, and no damage to the lens.

Method used

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  • Self-dedusting monitoring camera lens and preparation method thereof
  • Self-dedusting monitoring camera lens and preparation method thereof
  • Self-dedusting monitoring camera lens and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation method of the self-dust-removing monitoring camera lens lens of the present embodiment comprises the following steps:

[0043] (1) Preparation of coating solution

[0044] 1.1 Take 1.0 g of carbon nanotubes and a sufficient amount of concentrated nitric acid solution with a mass fraction of 65%, heat and reflux in a water bath at a temperature of 78 to 82°C for 20 hours, and wash the product to obtain carboxylated carbon nanotubes. The amount is based on the amount that is more than 1.0 g of carbon nanotubes completely reacted, and the amount of concentrated nitric acid is 300 mL in the present embodiment;

[0045] 1.2 Take 0.5g of carboxylated carbon nanotubes, 100mL of chlorinated ethylene and 2mL of dimethylformamide, mix them, and stir and reflux in a water bath at 75°C for 18h to react;

[0046] 1.3 Cool the mixed solution, add the mixed solution to a 2500r / min high-speed centrifuge for centrifugation, recover the upper layer, wash the lower black ...

Embodiment 3

[0058] The main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and embodiment 1 is:

[0059] 1.1 Heat and reflux in a water bath at a temperature of 78°C for 18 hours,

[0060] 1.2 Stir and reflux in a water bath at 73°C for 15 hours to react;

[0061] 1.3 Dry the black solid in a vacuum oven at 45°C for 22 hours,

[0062] 1.4 The mixture was stirred and reacted in a water bath at 90°C for 20 hours;

[0063] 1.6 Ultrasound for 12 minutes to obtain a uniformly dispersed coating liquid

[0064] Example 3

[0065] The main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and embodiment 1 is:

[0066] 1.1 ...

Embodiment 4

[0072] The main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. In the coating solution prepared in this embodiment, the concentration of per(17)fluorodecyltrimethoxysilane is 0.1 g / L, and the concentration of octadecylamine-modified carbon nanotubes is 0.8 g / L.

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Abstract

The invention discloses a self-dedusting monitoring camera lens and a preparation method thereof. An outer surface of a lens of a self-dedusting monitoring camera lens prepared through the preparationmethod is coated with hydrophobic coating, the hydrophobic coating is of a two-layer structure, a surface with a micro-nano multistage coarse structure and low surface energy has super-hydrophobicity, self-cleaning is achieved, and the lens of the monitoring camera can be kept clean for a long time, moreover, a carbon nano tube is modified by acid liquor, thionyl chloride and octadecylamine in sequence through a specific preparation method, the size of the prepared modified carbon nano tube coarse structure is smaller than the wavelength of visible light by 100 nm or above, Mie scattering ofthe light can be avoided, and high transparency is achieved. The method is advantaged in that two groups of electrode patches are adhered to edges, which do not influence a shooting range of the camera, of the two sides of the lens, and dust is completely removed from a surface of the lens by utilizing a three-phase traveling wave electric field.

Description

technical field [0001] The invention relates to the technical field of monitoring equipment, in particular to a self-dust-cleaning monitoring camera lens and a preparation method thereof. Background technique [0002] Surveillance cameras are ubiquitous in today's society. There are surveillance cameras in public places and private use, but the lens of the surveillance camera tends to accumulate more dust in a short period of time during use, which reduces the visibility of the lens and affects observation and monitoring. Monitor the effect. At the same time, since most surveillance cameras are installed in higher places, it is not convenient for manual cleaning, and even manual cleaning will quickly accumulate a lot of dust due to static electricity on the surface of the lens. Therefore, it is very necessary to study a non-artificial automatic dust removal method, but the automatic dust removal scheme in the prior art of surveillance cameras cannot solve this technical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/18C09D183/08C09D5/16C09D7/62C23C14/12B05D1/02B05D7/24B05D5/00
CPCB05D1/02B05D5/00B05D7/24C08G77/24C09D4/00C09D5/1687C09D183/08C23C14/12G02B1/18C08K9/04C08K9/02C08K3/041
Inventor 汪远昊何凎
Owner SHENZHEN ZHONGTIAN GALAXY TECH
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