INFRARED-TRANSMITTING FILM, METHOD FOR PRODUCING INFRARED-TRANSMITTING FILM, INFRARED OPTICAL COMPONENT, AND INFRARED DEVICE

摘要

The present invention addresses the problem of obtaining an infrared-transmitting film having excellent mechanical strength and environmental durability. This infrared-transmitting film (11) has: a buffer layer (5) having a greater Vickers hardness than an infrared optical substrate (1), the buffer layer being formed on the surface of the substrate (1); and an environmental durability enhancement layer (7) having a greater Vickers hardness than the buffer layer (5), the environmental durability enhancement layer being provided in contact with the buffer layer (5).