INFRARED OPTICAL LENS SYSTEM

摘要

PURPOSE: An infrared ray optical lens system is provided to manufacture a highly efficient and inexpensive invention. CONSTITUTION: An infrared ray optical lens system comprises a first lens(10) including crystallization materials and a second lens(20) including an amorphous type glass material in which is molding processed, along an optical axis from an object side to an image side. The infrared ray optical lens system has a property that the refractive index of the first lens is bigger than the refractive index of the second lens.