PIR motion detector(Infrared) :: PIR lens with counter sensor moveable :: PIR lens with counter sensor Ceiling :: PIR lens with counter sensor Wall :: PIR Fresnel Lens, FD08-10005(Flat shape, Wide angle)
Fresnel lens - Wikipedia
Amazon.com: S SUNSBELL Blind Spot Mirror Car Rear View Mirror Wide Angle Lens Universal Fit HD Stick on Frameless Convex Wide Angle Rear View Mirror, Backup Reverse Parking Fresnel Lens (Rectangle) :
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An iPhone X Camera Patent Surfaces describing the use of Fresnel Lenses for a Hybrid Wide-Angle-Telephoto Lens - Patently Apple
PIR motion detector(Infrared) :: PIR lens with counter sensor moveable :: PIR lens with counter sensor Ceiling :: PIR lens with counter sensor Wall :: PIR Fresnel Lens, FD08-10005(Flat shape, Wide angle)
Naked eye direction of arrival estimation with a Fresnel lens | Scientific Reports
Cuddeback Replacement Parts Fresnel Lens, Wide Angle Model 9005 - Farmstead Outdoors
PIR motion detector(Infrared) :: PIR lens with counter sensor moveable :: PIR lens with counter sensor Ceiling :: PIR lens with counter sensor Wall :: PD175-36005,Wide Angle PIR Fresnel lens