8605-3 Fresnel PIR Sensor Lens with 8m distance 360 degree 15mm focal length
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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.
Pyroelectric infrared sensor lenses are essential components in various applications such as motion detection, security systems, and temperature measurement. Understanding the key features and functions of these lenses is crucial for optimizing their performance. In this article, we will delve into the intricacies of pyroelectric infrared sensor lenses, exploring their design, working principle, and applications.
Design of Pyroelectric Infrared Sensor Lenses: Pyroelectric infrared sensor lenses are typically made from materials such as lithium tantalate or lithium niobate, which exhibit pyroelectric properties. These materials generate an electric charge in response to changes in temperature, making them ideal for detecting infrared radiation. The lenses are designed to focus infrared radiation onto the pyroelectric sensor, enhancing its sensitivity and accuracy.
Working Principle of Pyroelectric Infrared Sensor Lenses: When infrared radiation strikes the lens, it is focused onto the pyroelectric sensor, causing a temperature change in the material. This temperature change results in the generation of an electric charge, which is then converted into a voltage signal by the sensor. The voltage signal is processed by the electronics connected to the sensor, enabling the detection of motion, temperature changes, or other infrared phenomena.
Applications of Pyroelectric Infrared Sensor Lenses: Pyroelectric infrared sensor lenses find applications in a wide range of industries, including security systems, automatic doors, occupancy detection, and temperature measurement. In security systems, these lenses are used to detect motion and trigger alarms, while in automatic doors, they enable hands-free operation by sensing the presence of individuals. In occupancy detection, pyroelectric infrared sensor lenses are employed to control lighting and HVAC systems based on human presence, improving energy efficiency. Additionally, these lenses are used in temperature measurement applications, where they can accurately detect and measure infrared radiation emitted by objects.
Conclusion: Pyroelectric infrared sensor lenses play a crucial role in various applications, thanks to their design, working principle, and versatility. By understanding the key features and functions of these lenses, users can optimize their performance and enhance the efficiency of their systems. Whether used in security systems, automatic doors, occupancy detection, or temperature measurement, pyroelectric infrared sensor lenses offer reliable and accurate detection of infrared radiation, making them indispensable components in modern technology.
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
