3517 Fresnel PIR Sensor Lens Diameter 40mm with 10m distance Ceiling Lens
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Fresnel PIR lens has two functions: 1. It is the focusing effect, that is, the pyrolysis infrared signal is refracted (reflected) on the PIR. 2. The detection area is divided into a number of bright areas and dark areas, so that the moving object entering the detection area can generate a modified pyroelectric infrared signal on the PIR in the form of temperature change.
Passive Infrared (PIR) sensor lenses are a crucial component in motion detection technology. These lenses play a significant role in detecting infrared radiation emitted by objects in their field of view.
What is a PIR sensor lens?
A PIR sensor lens is a specialized optical component that is designed to focus infrared radiation onto the sensor element of a PIR sensor. These lenses are typically made from materials that are transparent to infrared radiation, such as silicon or germanium.
How do PIR sensor lenses work?
When an object enters the field of view of a PIR sensor, the infrared radiation emitted by the object is focused onto the sensor element by the lens. The sensor element then detects changes in the infrared radiation levels, which are interpreted as motion by the sensor.
Types of PIR sensor lenses:
There are several types of PIR sensor lenses available, including fresnel lenses, multi-faceted lenses, and mirror-based lenses. Each type of lens has its own unique characteristics and is suited to different applications.
Factors to consider when choosing a PIR sensor lens:
When selecting a PIR sensor lens, it is important to consider factors such as the field of view, detection range, and sensitivity of the lens. The lens should be chosen based on the specific requirements of the application in which it will be used.
Importance of PIR sensor lenses in motion detection systems:
PIR sensor lenses are critical components in motion detection systems, as they determine the accuracy and reliability of the system. Choosing the right lens for a PIR sensor can significantly improve the performance of the system and reduce false alarms.
In conclusion, PIR sensor lenses are essential components in motion detection technology. By understanding the role of these lenses and selecting the right lens for a PIR sensor, it is possible to enhance the efficiency and accuracy of motion detection systems. Choosing the right PIR sensor lens is crucial for ensuring the optimal performance of motion detection systems.
Product classification of Fresnel PIR lens
Fresnel infrared sensor lens produced by our company is divided into five series according to the appearance and size.
1. Helical series below Φ30mm ----Easy to install, easy to conceal
2. Φ30mm or more hemispherical series ----- mostly used for ceiling lamps, large sensing angle
3. square sheet series ------ mostly used in security series, long sensing distance, large horizontal sensing angle
4. circular sheet series ----- mostly used for infrared thermometer, small diameter, small focal length
5. special shape series ------ customer special requirements open mold
