This product in the optical index is a 530nm bandpass filter, because it is by the band at 530 ± 17nm, this band of light is green, so it can be said that this product is a green sheet. Our band-pass subdural multilayer color film by ion assisted deposition of high vacuum evaporation nanomaterials made dense film is good, high-resolution imaging. Imports of thin optical glass, through the tall, good finish, thickness tolerances, excellent flatness and other optical properties. Imported coating equipment ion sputtering process, with high labor solid film, spectral uniformity, strong center wave stable performance characteristics. Application: fluorescence analyzer, microplate reader, cable upgrade equipment, wireless transmission equipment, mobile barcode scanning, infrared whiteboard, infrared cameras, infrared touch screen, iris recognition, infrared medical instruments, infrared ink recognition, red film recognition, Face recognition sensor system. Handheld infrared laser range finder, laser range finder, optical instruments, medical and health equipment and testing instruments. Product Specifications: As the band: 400nm-500nm, 560nm-750nm Up depth: T90% Specifications: General Dimensions: 4 * 4mm / 4 * 3mm; Size customized as per customer requirements; square / round can be. Bandpass filter color song we consistency, good film stability: the surface of the salt spray corrosion test by GB / T10125 standard surface detected by the test center authority, not only Supply bandpass filters, but also the supply of the kinds of optical cold products: a variety IR-CUT (IR cut filter), broadband antireflection (R-Coating) film, a variety of bandpass filters highly reflective film, semi-reflective film coated optical communications, gold-plated crystal coating (silver, aluminum) mirror, UV reflectors, color filters, red, green and blue color filters.