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Infrared Sensing Fresnel Lens Infrared Sensing Fresnel Lens

Fresnel PIR Sensor Lens 3517

Specification

[Product Name] Fresnel PIR Sensor Lens

[Model] 3517

[Material] Optical grade HDPE
[Dimension] 39.2x17.7 mm
[Focal Length] 15mm
[Sensing Angle] 120 degree

[Detection Distance] 10mm

[Color] white, black, customized

[Mounting] Ceiling Installation

Fresnel PIR Sensor Lens 3517 | 15mm Focal Length Ceiling-Mount Infrared Motion Lens | 120° Detection Angle 10m Range


What Is a Fresnel PIR Sensor Lens? Model 3517 Ceiling Motion Detection Optical Lens


The Fresnel PIR Sensor Lens 3517 is designed for ceiling-mounted infrared motion sensors. With a 15mm focal length and 120° detection angle, it supports reliable motion detection within a 10 meter sensing range.

With a 15mm focal length, 120° detection angle, and 10m sensing distance, this lens enables stable infrared signal focusing for passive infrared sensors used in smart security and automation equipment.

Manufactured using precision micro-structured Fresnel optics, the lens improves signal concentration and detection stability while maintaining a lightweight and compact structure.


Shandong Yuying Optical Instrument Co., Ltd

Professional Fresnel lens manufacturer with large-scale production and custom optical design capability.


Customized Services

Yuying offers customized Fresnel lenses based on customer requirements, including different sensing angles, detection distances, sizes, and test ratios. All of our products are made using original molds, preserving the accuracy of the original design and reducing the precision loss and time delays caused by secondary mold changes. New products are typically available for sample delivery within 30 days.





Design & Development

We utilize proprietary infrared sensing design software to meet customer needs with precision. All stages of product development—from design validation, mold processing, testing, production, inspection, to packaging—are carried out internally, ensuring on-time delivery.


What are infrared Fresnel Lens used for in PIR sensors?


Infrared Fresnel lenses concentrate thermal radiation onto PIR sensors to enable accurate motion detection in smart lighting, alarms, and automation systems.

Applications



  • Smart lighting motion sensors
  • Indoor security monitoring devices
  • Human presence detection systems
  • Smart building automation sensors








Mold Manufacturing

With over 10+ years of experience in manufacturing infrared sensing lens molds, we guarantee product consistency with design specifications, ensuring the highest level of precision.



Mass Production

We produce nearly 100 million lenses annually, serving well-known brands such as Midea, 3M, and Siemens. This large-scale production capacity ensures product quality and timely delivery.





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