Difference between white camera and infrared gun

First, infrared camera principle Infrared camera technology is divided into passive infrared camera technology and active infrared camera technology. PIR technology uses the principle of infrared emission from any object above absolute zero (-273°C). Since the human body and heat emitting objects emit strong infrared light, other non-heating objects emit weak red light. Therefore, night surveillance can be achieved using a special infrared camera. The passive infrared camera technology is not adopted in night vision systems due to high equipment cost and failure to reflect the surrounding environment. The active infrared camera technology uses specially designed "infrared lamps" to artificially generate infrared radiation, produce infrared light that is invisible to the human eye and can be captured by ordinary cameras, radiate "illumination" scenes and environments, use ordinary low-light-rate CCD black-and-white cameras or use "daylight The color nighttime camera that automatically turns black and white, or the "infrared low-illumination color camera," feels infrared light reflected from the surrounding environment to achieve night vision.

Light is an electromagnetic wave whose wavelength ranges from a few nanometers (1 nm = 10-9 m) to about 1 mm (mm). What the human eye can see is only part of it. We call it visible light. The wavelength of visible light ranges from 380nm to 780nm. The wavelength of visible light is divided into red, orange, yellow, green, cyan, blue, and violet, and its wavelength is shorter than that of violet. Ultraviolet light is called infrared light, and its wavelength is longer than infrared light.
The infrared camera is a camera device that integrates a camera, a protective cover, an infrared lamp, a power supply and a cooling unit into one. The basic principle of night vision is to use ordinary CCD black-and-white cameras to sense the spectral characteristics of infrared light (that is, visible light and infrared light can be felt). The infrared light is used as an “illumination source” for night vision imaging.

Second, white light camera principle
1. White light night vision (/W) White light night vision Replace the infrared light emitting led light on the original infrared night vision camera with a white light emitting led light. Advantages (1) Perfectly restore the true colors of night scenery; (2) Perfectly identify night portraits, this function is particularly important for investigation and evidence collection;
2. Filter switching (/F) Filter switch The addition of a filter switch removes the effect of non-visible light during the day on the infrared camera and increases the camera's ability to receive various light at night.
Advantages: (1) Make the infrared camera more realistic in daytime colors; (2) Make the infrared camera more vivid and clear at night; "
3. Constant power and wide voltage module (/C) Constant power and wide input voltage This module can keep the input power and output power constant in the range of 12V-36V DC input voltage. Advantages: (1) Completely eradicate the damage to camera caused by unstable input voltage (such as surge) (2) It can work stably for a long time in the range of DC input voltage 12V-36V. It is the best solution for centralized power supply:

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