Confused btw IR LED Security camera and a Thermal IR Camera

[Yogiwins 0]

What is the difference between a low-cost CCTV IR LED Security camera and a Thermal infrared surveillance camera?

[Securx 0]

There is quite a difference between IR CCTV Camera and a Thermal Infrared Surveillance Camera in terms of working, application, price etc.

 

First of all we need to know about Infrared Radiation, IR Radiation is electromagnetic radiation with longer wavelength than those of visible light (VIBGYOR) and is invisible to human eye. And Infrared radiation is emitted by Objects that are warmer than absolute zero.

 

Working: CCTV IR LED Security Camera works during night and requires Infrared Radiation Wavelength to work while Thermal Infrared Surveillance Camera detects heat (emitted by movements of objects i.e. Thief) during day time to work.

 

Assigned Color: Color assigned by IR LED is black and white while color assigned by Thermal Infrared Surveillance Camera System depends upon the head of the source.

 

Range: A low cost IR LED has the range of less than 40 meters while a good & expensive Thermal Infrared Surveillance Camera System can detect heat up to a distance of 1 Km. A good & expensive IR LED has the range of up to 250 meters.

 

Price: Thermal Infrared Surveillance Camera System are expensive than CCTV IR LED Security Camera.

[Sawbones 0]

Long wavelength infrared vs short wavelength infrared.

 

Heat = Thermal = long wavelength.

 

Light = IR camera = short wavelength.

 

Thermal is also about 20x the price.