PIR

PIR sensor, motion sensor, occupation sensor

Design and Prediction of Detection Range for PIR(Passive InfraRed) Lens Using Optical Simulation Program

  Recently, development inquiries for passive-infrared(PIR) lenses continue. In general, PIR(Passive Infrared) lenses are arranged in a x b array with a number of Fresnel lenses. PIR(Passive InfraRed) lenses are usually not flat and are mostly round or square. In addition, separate materials should be used that can be passed on to the FIR(Far Infrared). […]

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motion sensor development

This is a brief conversation between and me and one of our customer. We have been tasked with developing a superior passive (pyroelectric) PIR-sensor-based motion detector for commercial and residential spaces to add to the customer’s line of existing successful models.  The customer having little in-house optical expertise, they have an immediate need for technical

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Reduction of production stage by supplying improved PIR lens for human counter sensor

 Fresnel Factory has supplied its customers with improved PIR lenses for human counter sensors. As a result, the customer’s production process has been reduced. This has helped reduce labor costs, increase production yields, and reduce performance tolerance between customer’s products  The customer has already supplied the lens for PIR from foreign companies and has been

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Development of lens transmittance improvement for FIR sensor for absolute temperature measurement

We have developed a lens transmittance improvement for FIR sensor for absolute temperature measurement, and we introduce successful cases which increased about 10%. FIR (Far InfraRed) sensor is a sensor that detects the temperature by measuring the infrared (IR) emitted from an object and is used in infrared cameras.  <Lens transmittance improvement for FIR sensor

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