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7708-10 Fresnel PIR Sensor Lens with 16m distance Motion Light Switch Lens rectangle 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.
Design of Pyroelectric Infrared Sensor Lenses:Pyroelectric infrared sensor lenses are carefully crafted from materials like lithium tantalate or lithium niobate, which possess pyroelectric properties. These materials have the ability to generate an electric charge in response to temperature changes, making them ideal for detecting infrared radiation. The lenses are specifically designed to focus the infrared radiation onto the pyroelectric sensor, thereby enhancing its sensitivity and accuracy.
Functioning of Pyroelectric Infrared Sensor Lenses:When the lens receives infrared radiation, it is directed onto the pyroelectric sensor, causing a temperature change in the material. This change in temperature leads to 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, allowing for the detection of motion, temperature variations, or other infrared phenomena.
Applications of Pyroelectric Infrared Sensor Lenses:Pyroelectric infrared sensor lenses are widely used across various industries, including security systems, automatic doors, occupancy detection, and temperature measurement. In security systems, these lenses are employed to detect motion and trigger alarms. In automatic doors, they enable touchless operation by sensing the presence of individuals. Occupancy detection systems utilize pyroelectric infrared sensor lenses to control lighting and HVAC systems based on human presence, thereby improving energy efficiency. Additionally, these lenses are utilized in temperature measurement applications to accurately detect and measure infrared radiation emitted by objects.
In Conclusion:Pyroelectric infrared sensor lenses are essential components in a range of applications due to their design, functionality, and versatility. Understanding the key features and functions of these lenses is crucial for optimizing their performance and enhancing the efficiency of systems. Whether integrated into security systems, automatic doors, occupancy detection setups, or temperature measurement devices, pyroelectric infrared sensor lenses provide reliable and precise detection of infrared radiation, making them indispensable 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
