Infrared-transmitting film, method for producing infrared-transmitting film, infrared optical component, and infrared device

摘要

An infrared-transmitting film which is excellent in mechanical strength and environmental resistance. The infrared-transmitting film comprises a buffer layer formed on a surface of an infrared optical substrate and having a Vickers hardness greater than that of the substrate and an environmental resistance improving layer provided in contact with the buffer layer and having a Vickers hardness greater than that of the buffer layer.

主权项

1. An infrared-transmitting device comprising:
an infrared optical substrate, an infrared-transmitting film formed on the substrate,
wherein the infrared-transmitting film comprises a buffer layer provided on the substrate and an environmental resistance improving layer provided on the buffer layer,wherein the buffer layer comprises a laminate of brittle material particles to improve on mechanical strength between the substrate and the environmental resistance improving layer, andwherein the environmental resistance improving layer comprises a laminate of brittle material particles, and an anchor layer formed at the interface between the buffer layer and the environmental resistance improving layer, and having a thickness of 0.05 μm to 0.5 μm, wherein a Vickers hardness of each of the substrate, a buffer layer formed on a surface of the substrate and having a Vickers hardness greater than that of the substrate, an environmental resistance improving layer provided in contact with the buffer layer and having a Vickers hardness greater than that of the buffer layer, wherein the buffer layer has the Vickers hardness more than four times as large as that of the substrate, and wherein the environmental resistance improving layer has the Vickers hardness which is laid in a range of 100 kgf/mm2 to 1000 kgf/mm2.