25mm Focus Length Rectangel Shape Fresnel Lens

• Customization: Available
• Usage: Optical
• Type: Convex Lens
• Model NO.: HW7704-15
• Shape: Laminated Lenses
• Material: HDPE
• Lenses Color: White
• Certification: RoHS, ISO9001, CE
• Customized: Customized
• Coating: UV
• Size: 20*82.5mm
• Focus Length: 25mm
• Angle: 120 Dregree
• Thickness: 1mm
• Distance: 12m
• Lifetime: 10 Years
• Appliance: Security System &Thermodetector
• Free Sample: Available
• Transport Package: 250 Pieces in a Poly Bag
• Specification: 20*82.5mm
• Trademark: Haiwang(HW)
• Origin: Guangdong, China
• HS Code: 9001909090
• Production Capacity: 100000/Week

Product Description

25mm Focus Length Rectangel Shape Fresnel Lens 








Specification 

Model	HW7704-15
Material	HDPE
Size	20*82.5mm
Focus Length	25mm
Angle	120 degree
Distance	12m
Shape	laminated lenses
Color	white and black
Package	250 pieces in a poly bag
Production Capacity	100000/Week
Customized	available
Free Sample	available

Feature
1.Designed for passive infrared sensor applications 
2. Easy to cut; high compatibility , low cost and environment 
3.Can be used in applications including  security system, lighting controls and environmental controls 
4.Optimized for dual element pyroelectric devices 
5.White light immunity can  reduce false triggers 
6.UV resistant for outdoor applications 
7.Designed for uniform sensitivity to reduce electronic gain

Function
The Fresnel lens has two functions as follows
1. The focusing action, soon hotly releases the infrared signal refraction (reflection) on PIR,
 2. Fresnel lens divides the search coverage into detection area  and non-detection area. PIR can generate pyroelectric infrared sinal when moving object enters the detection area making the change of temperature. 

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