Fresnel Lens

Fresnel Lens

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PROD Model:8120-2
Material : HDPE
Overall Size:Grain diameter 8.7mm(φ10.2*8.2mm)
Focal Length:5.2mm
Detectable Distance:5m
Viewing Angle:120°
Pins : 3 pins Color : primary color、black、milky (Color customization is acceptable)


Widely used in human body sensor switch, alarm, infrared thermometer and infrared imaging and other aspects. It can provide users with different sensing angles, sensing distances, sizes, and test ratios. Fresnel lens function: first, focusing effect; The second is to divide the detection area into several bright and dark areas, so that the moving objects entering the detection area can produce a change pyroelectric infrared signal on the PIR (passive infrared detector) in the form of temperature changes.


★ Smart door lock

Smart doorbell


PROD Model 8120-2
Material HDPE
Overall size Grain diameter 8.7mm(φ10.2*8.2mm)
Focal length 5.2mm
Detectable distance 5m
Viewing angle 120°
Pins 3pins
Color primary color、black、milky (Color customization is acceptable)

Dimension (Unit=mm)


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SENBA Sensing Technology Co.,Ltd.(stock code:300701), was founded in 2005, with the focus on producing the top quality photoelectric components, such as PIR sensors, Photoresistors,Light Sensors, Flame detectors etc. Our strategic goal is to master the core technology.