1.Composition of security surveillance camera:

It is mainly composed of 4 large parts and 4 small parts.

Major accessories: camera PCB, lens, lamp board, shell.

Small accessories: tail line, lens base, copper column, shipping mark line, etc

Usually, the tail line of the network camera is a network cable interface and the other is a power cable. In case of Poe camera, a network cable interface is required. The quality of the materials used in your camera accessories determines the competitiveness of your products.

02. Camera PCB:

The most important part of the surveillance camera is the PCB, which is equivalent to the brain of the camera. The PCB is embedded on the motherboard, so sometimes it is directly called the camera motherboard, which is divided into CCD motherboard and CMOS motherboard. The two important parts of the PCB are imaging sensor and PCB processor. At present, most PCB brands used in the market are: HS, Ruision, Anjiavision, Topsee, Fuhan...

Difference between CCD camera and CMOS camera:

CMOS fabrication process is simpler than CCD

CMOS is cheaper than CCD

CMOS consumes more power than CCD

CMOS noise is larger than CCD

CMOS sensitivity is worse than CCD

CMOS resolution is lower than CCD

03. Security camera lenses

The camera lens is divided into large lens and small lens from the appearance. 

For details, please refer to the article <Basic knowledge of CCTV lens>and <"Choosing security camera lens in this way gives your camera more advances>

The key knowledge of lens lies in focal length and aperture.

Focal length: we usually say how many millimeters of lens we need. Generally 3.6mm, 4mm, 6mm, 8mm, 12mm, etc.

Aperture: it is the F value appearing on the lens, generally F1 0，F1. 2，F1. 4，F1. 6...

The larger the number of millimeters of the lens, the smaller the viewing range and the farther the distance. For example, the workshop and warehouse usually use 4mm lens; According to the residential building unit door, it is usually 6mm;

According to the fence, the path is usually 12mm. Of course, I don't think it should be flexibly selected and used according to the specific application.

The smaller the F value of the aperture, the greater the luminous flux, and the more expensive .

SECULENS is a professional manufacturer of optical lenses [cctvlens & ircut] in China. Focus on the R & D, production, sales and after-sales service of optical lens. The products are mainly used in high-precision optical systems such as monitoring, smart home, industry and automobile. SECULENS provides you with good price and quality products to create the most competitive security surveillance camera for you! We are a close partner of YTOT factory. You can get the original products of YTOT with good price and high quality through us!

04. Camera LED light panel

Common camera light boards include: array infrared lamp, ordinary infrared lamp and white light board.

The function of the light panel is to provide auxiliary light source for the lens at night, so that the lens can sense infrared light and become an image. If the delivery effect of the light panel is not good for various reasons, it can also be equipped with an auxiliary light source separately. At present, there are FY LED...on the market.

05. Camera housing

There are various shapes of camera shell, generally including gun type, hemispherical and spherical. There are aluminum and plastic materials.

This is a simple introduction to the basic assembly of surveillance camera. For more details, please pay attention to our later articles! Need to know more about Security CCTV lens, please contact us!