MULTISPECTRAL MIRROR Russian patent published in 2016 - IPC G02B5/28 

FIELD: instrument making.

SUBSTANCE: invention relates to optical instrument-making and can be used as a laser resonator with adjustable wavelength or as exit mirror of a multichannel optical-location system with a multi-colour laser source. Mirror consists of thin optically transparent sub-bases (1) and multilayer interference coatings (2) of alternating dielectric layers with high and low refraction indices. Each interference coating (2) is located on the corresponding sub-base (1). Latter dielectric layer of each interference coating (2) is made of material with low refraction index and optical thickness λ_i/2, while optical thickness of the rest of the dielectric layers of the interference coating (2) is equal to λ_i/4 (λ_i -working length of laser radiation).

EFFECT: technical result is beam strength increase, mechanical and climatic stability.

1 cl, 2 dwg