SKU: SENS-1937
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Senba S9004 HDPE Optical Fresnel Lens for PIR Sensors - 8m Detection, 100° Viewing Angle

₹80.00 (Inclusive of all taxes)
Out of Stock

The Senba S9004 is a high-density polyethylene (HDPE) Fresnel lens designed to focus infrared radiation onto Passive Infrared (PIR) sensor elements, enhancing detection range and sensitivity for security and automation systems. It features a 10.5mm focal length, an 8-meter detection distance, and a 100° viewing angle for broad coverage.

Features

  • HDPE (High-Density Polyethylene) construction for durability and optical clarity.
  • Optimized for PIR sensors with a 10.5mm focal length and 100° wide viewing angle.
  • Enhances sensor detection range up to 8 meters for improved system coverage.
  • Standard 22.5mm diameter and 3-pin footprint for easy integration into existing sensor housings.
  • Concentric groove design efficiently focuses IR radiation onto the sensor element.

Out of stock

Description

The Senba S9004 Fresnel lens is a critical optical component for Passive Infrared (PIR) motion detection systems. Its concentric groove pattern on one side focuses ambient infrared radiation from a wide 100° field of view onto the pyroelectric sensor element, significantly increasing its sensitivity and effective detection range to 8 meters. The smooth opposite side protects the optical surface.

Manufactured from transparent HDPE, this lens offers a high-value balance of optical performance, environmental resistance, and mechanical durability. It is a direct-fit component designed for integration into standard PIR sensor modules, alarm systems, and human presence detection switches, forming the essential optical interface between the environment and the sensing electronics.

Key Features

  • High-Density Polyethylene (HDPE) material ensures long-term optical stability and impact resistance.
  • Precision-molded Fresnel pattern with a 10.5mm focal length for optimal IR focusing.
  • Wide 100-degree horizontal viewing angle provides extensive detection coverage.
  • Enables up to 8-meter detection distance for standard PIR sensor elements.
  • 22.5mm standard diameter and 3-pin alignment design for straightforward, drop-in installation.
  • Transparent finish maximizes infrared transmission for high sensor signal gain.
  • Designed specifically for compatibility with a wide range of commercial PIR sensor modules.

Applications

  • Security system PIR motion detectors for indoor and covered outdoor use.
  • Smart home automation for human presence sensing in lighting and climate control.
  • Energy management systems for occupancy-based control of HVAC and lighting.
  • Automatic door activation sensors in commercial and residential settings.
  • Alarm and intrusion detection systems for perimeter monitoring.

Technical Specifications

Item TypeFresnel Lens
Model NumberS9004
Diameter22.5 mm
Focal Length10.5 mm
Detection Distance8 m
Viewing Angle100°
Pin Configuration3-pin
MaterialHDPE (High-Density Polyethylene)
Color / FinishTransparent

Frequently Asked Questions

What is the primary function of this S9004 Fresnel lens?

The S9004 Fresnel lens is an optical component designed specifically for Passive Infrared (PIR) motion sensors. Its concentric grooves focus infrared radiation from a wide 100° area onto the smaller pyroelectric sensing element, dramatically increasing the sensor's effective detection range and sensitivity, enabling reliable motion detection up to 8 meters.

What material is the lens made from and is it durable?

This lens is manufactured from High-Density Polyethylene (HDPE), a durable plastic known for its good optical clarity, impact resistance, and stability across a range of temperatures. HDPE provides a high-value build that protects the precise Fresnel pattern from damage while maintaining consistent optical performance over time in typical indoor and sheltered environments.

How do I install or align this Fresnel lens with my PIR sensor?

Installation is straightforward due to the standard 22.5mm diameter and 3-pin alignment footprint. The lens is designed to be placed directly over the pyroelectric sensor element within a standard PIR module housing. The pins ensure correct rotational alignment, so the Fresnel grooves properly focus IR onto the sensor. The smooth side typically faces outward.

Package Includes

  • 1 x S9004 HDPE Optical Fresnel Lens

Additional Information

Weight 0.01 kg
Dimensions 5 × 3 × 1 cm