Refet optical technology company is a company specialized in going into optical product research, opening, producing, selling. We can do all filters according to customers' requirements. Our main products are optical low pass filter (OLPF), IR cut filter, IR filter, crystal filter, interference filter, dayand night filter,narrow bandpass filter, dichroic filter, longpass filter, shortpass filter, lens for other optical application.We can supply competitive price, perfect service and graceful quality. We welcome all interested customers to contact us for more details, and We hope to establish long-term relationship with customers in the near future. Production Description:photoelectric filter, including IR filter, day and night filter, crystal filter, Optical low pass filter(OLPF), interference filter which are widely used in high-end CCD/ CMOS optical applicatio