Address: Juzhu Road, Sanbei Town, Cixi City
Finance Room Phone:
86-574- 63738668
Business Department Tel:
86-574- 63739476
Office Phone:
86-574- 63738998
Fax:86-574- 63739999
QQ:563671224
Website: en.cnpenglai.com
E-mail: penglai@cnpenglai.com
Fresnel lens (flaky):
8501-2 (78*37)
Focal length: 21MM
Distance: 15M
Angle: 180 degrees
The Fresnel optical lens has two functions: one is focusing, that is, the infrared signal is refraction (reflection) on the PIR. The second function is to divide the detection area into several bright and dark areas, so that the entrance detection The moving objects in the area can generate varying pyroelectric infrared signals on the PIR in the form of temperature changes. Fresnel lens is a kind of widely used optical element. Its design and manufacturing are designed into many technical fields, including optical engineering, macromolecule material engineering, CNC machining, diamond turning process, nickel plating process; molding, injection molding, Casting and other manufacturing processes.