Infrared Fresnel Lens Description
Infrared Fresnel lens is a kind of flat lens in which a large number of linear lenses with triangular cross-section shapes are arranged in a concentric circle shape. The light refracted by each triangle passes through the same point (focus), and its function is the same as an ordinary lens. Ordinary lenses have the characteristic of gradually thickening from the outer periphery to the center, while Fresnel lenses have no thickness change at either the outer periphery or the center, so they are thinner than ordinary lenses.
Infrared Fresnel Lens Specifications
|
Substrate
|
Poly IR
|
|
Wavelength Range (nm)
|
8000 - 14000
|
|
Coefficient of Thermal Expansion CTE (10-6/℃)
|
11-13
|
|
Index of Refraction nd
|
Visible (Sodium D Line): 1.52
8-14µm: 1.53
15µm+: 1.48
|
|
Shore Hardness
|
D60-70
|
|
Young's Modulus (GPa)
|
0.40 - 1.24
|
|
Center Thickness CT (inches)
|
0.02
|
|
Flexural Modulus (psi)
|
(100-260) x 103
|
|
Operating Temperature (℃)
|
100
|
|
Wavelength Range (μm)
|
8-14
|
Infrared Fresnel Lens Application
Infrared Fresnel lens is Excellent Collecting Optics for Infrared Detectors
Infrared Fresnel Lens Packaging
Our Infrared Fresnel lens is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Get a Quote
