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Multiple Size 42x30x1mm 400nm to 700nm Visible High Pass UV IR Cut Filter Glass
Infrared (IR) cut-off filters are used with color CCD or CMOS imagers to produce accurate color images. An IR cut-off filter blocks the transmission of the infrared while passing the visible.This can be done with two optical techniques: absorption or reflection. Absorptive filters are made with special optical glass that absorbs near infrared radiation. Reflection type filters are short-pass interference filters that reflect infrared light with high efficiency.
We offer both types of absorptive filters and reflective IR filters, which is a new type of reflective filter suitable for day/night security cameras. It allows both visible and infrared LED light to pass through. The absorptive filters are recommended for CCD imagers while the reflective CMOS imagers.
What is infrared?
Infrared (IR) is invisible radiant energy, electromagnetic radiation with longer wavelengths than those of visible light. Human eyes only can see light with a wavelength between 320nm-760nm. Infrared, which spans 700nm to 1000nm on the EM spectrum, is beyond what the human eye can see, but the IP camera sensor can detect it and make use of it.
Material | AI, Cu, Ge, Si, Ni, ZnSe and sulfide glass |
Machining Shape | Aspheric shape of off-axis, diffraction, paraboloid, cone, etc. |
Surface Flatness | λ/5@633nm |
Surface Quality | 40/20 |
Centration | 60″ |
Thickness Tolerance | ±0.03mm |
Diameter Tolerance | +0.00~-0.02 |
Diameter Range | 5~200mm |
Coating Wavelength Coverage | 4~12μm |
Q1:Can you send me free samples or Can i have an sample order ?