Hello, welcome to visit Wuxi Security Monitoring, Wuxi Monitoring, Wuxi Remote Monitoring, and the official website of Wuxi Dehang Technology Co., Ltd!

 1512008412106430.png   Service hotline 138-618-32237

 Wuxi Monitoring

technical support

Product classification

contact us

Enterprise name: Wuxi Dehang Technology Co., Ltd

Contact: Mr. Liu

Tel.: 0510-68289990

Mobile: 13861832237

Email: server@nabenjixie.cn

Website: nabenjixie.cn

Address: Room 1202, No. 99 Zhaoshangcheng Road, Wuxi, Jiangsu

Welcome to Wuxi Security Monitoring, Wuxi Monitoring, Wuxi Remote Monitoring - the official website of Wuxi Dehang Technology Co., Ltd!

How to select monitoring lens for security monitoring system

How to select monitoring lens for security monitoring system

Date of issue: 2019-10-12 Author: Wuxi Dehang Technology Co., Ltd Click:218

 Wuxi Security Monitoring

How to Security monitoring Selection of monitoring lens of the system

The camera is video camera The quality of its performance is directly related to whether the camera image is clear. The camera is very important in the computer room monitoring system. Therefore, in order to maximize the efficiency of the camera, in addition to the excellent design of the camera's own camera components and circuits, it is also necessary to select an appropriate lens for it.


The following factors need to be considered in the selection of security monitoring system lens:


1. Lens focal length

When considering the lens index, it is necessary to comprehensively consider the position, distance, CCD specification of the monitoring target, and the image effect of the monitoring target on the monitor to select the most appropriate focus lens. If it is necessary to monitor nearby objects, and the requirements for clarity are high, the effect of the fixed focus lens is generally better than that of the zoom lens, so the short focus fixed focus lens is usually selected, and indoor computer room monitoring is more applicable.


2. Field angle range

In short, the larger the focal length is, the farther the monitoring is, and the smaller the field angle is; The smaller the focal length, the closer the monitoring distance and the larger the field angle. For example, in some projects with manual zoom lens requirements, the field of view angle range is the first to be considered, so the selected focus range is generally determined according to the field of view angle range. Small indoor machine room monitoring is optional. Because the electric zoom lens can control zoom and focus with the keyboard at any time according to the on-site environment, the field of view angle range is not too important to consider. However, when the initial focal length of the electric zoom lens is too large (for example, the initial focal length exceeds 20mm), large-scale monitoring cannot be achieved.


3. Aperture of lens

The luminous flux of the lens is measured by the ratio of the focal length of the lens and the luminous aperture (F=f/D), marked with F. Each lens is marked with its maximum F value. The smaller the F value, the larger the aperture. For the environment with constant lighting conditions, the lens with fixed aperture can be selected, generally in the laboratory environment; For the environment where the change of light intensity is not obvious, use a manual aperture lens, that is, adjust the aperture to an ideal value and then fix it; If the illuminance changes greatly and 24-hour outdoor monitoring is required, automatic aperture lens shall be selected. Wuxi Dehang selects different monitoring equipment according to different needs of customers, so that each equipment room monitoring system can give full play to its role.

Website: //nabenjixie.cn/news/423.html

key word: Wuxi Remote Monitoring Company , Wuxi remote monitoring price , Wuxi remote monitoring supplier

Recent browsing:

  • Online Service
  • contact number
    thirteen billion eight hundred and sixty-one million eight hundred and thirty-two thousand two hundred and thirty-seven
  • Online Message
  • Mobile website
  • Online consultation
    Welcome to leave us a message
    Please enter your message here, and we will contact you as soon as possible.
    full name
    contacts
    Telephone
    Landline/mobile number
    mailbox
    mailbox
    address
    address