LP580nm Long pass filter

Long-pass filters (also known as filter plates) are important optical components that have been widely applied in digital imaging, biomedicine and beauty care, fingerprint recognition and other fields. Their characteristic is to allow light within a certain wavelength range to pass through while blocking light in another wavelength range. Long-pass filters are a common filter solution in beauty equipment. The principle is that a wide-spectrum light is emitted by a strong pulse xenon lamp, and a specific filter is used to remove ultraviolet light and select the standard spectral band for treatment, which is then applied to human skin tissue to achieve the effect of beauty treatment. The difficulty in the design of the film system and the preparation process of the related filters lies in the requirements of high transmission rate in the passband, wide cut-off band, and high steepness. Applications include white LED, halogen lamps, fiber optic lighting, visible light sources, beauty equipment, police multi-band detection instruments, strong flashlights, stage lighting color filters, facial recognition attendance devices, optical instruments, fiber optic lighting, halogen lamp heat insulation plates, and light source display cabinets.