A method for fabrication of ultravi olet induced transmission (IT) filter by visible light control in an ordinary vacuum is presented. Manu facturing principles and techniques are disscussed. Measured spectral transmitta nce curves of making ultraviolet IT filter by this method are given. A method for fabrication of ultravi olet induced transmission (IT) filter by visible light control in an ordinary vacuum is presented. Manu facturing principles and techniques are disscussed. Measured spectral transmitta nce curves of making ultraviolet IT filter by this method are given.