Optical Coating
Band Pass Filter
It is a coating technique that aims to increase the transmittance of a particular wavelength band and selectively penetrate or block the wavelength by blocking other bands.
Principle
It is a vacuum thin film deposition technology that uses a vacuum thin film deposition machine to selectively penetrate or block the transmission rate of a specific wavelength band through interference phase distance by repeated coating of highly refractive and low refractive drugs on the product.
Wavelength Range of Light
Various Band Pass Filters
Effect
Not only can it be implemented as a color filter by selectively penetrating or blocking visible light (400 nm to 700 nm), but it can also be used as a UV Cut Filter by blocking near-violet (200 nm to 400 nm) and as an IR Cut Filter by blocking near-infrared (750 nm to 1550 nm).
Applcable fields
Various Band Pass Filters are applied to various fields such as camera filters, medicine, optics, and military optics depending on the wavelength range of penetration/blocking.
Purple Pass Filter
Blue Pass Filter
Yellow Pass Filter
Green Pass Filter