Narrowband filtr is the ooptical filter that suppressing the light source, sensor, natural light and isolating specific monochromatic spectrum. Narrowband filter is relatively cutoff intrference light and transmit the particular wavelength. Giai photonics company is to pay more attention to the application field of customers, and custom the narrowband filter that si the most competitive price. Application: Semiconductor laser, Security camera, Sensor encapsulation, Medical instrument, Fluorescence microscope.