Coaxial multiplexed multispectral optics system for long-distance laser beam focusing devices.

Abstract

The invention relates to a coaxial multiplexed multispectral optical system for a laser focusing device, comprising a shared mirror telescope assembly, a plane mirror assembly, a laser focusing assembly, and an imaging assembly. The shared mirror telescope assembly operates in the 700–900 nm range to collect radiation from the target and simultaneously transmits a 1050–1090 nm laser beam from the device to the target. The plane mirror assembly redirects the beam, allowing 700–900 nm light to enter the imaging assembly, while the laser beam passes through the focusing assembly and mirrors to the target. The imaging assembly focuses the image onto a near-infrared sensor, while the laser focusing assembly collimates and focuses the beam at various distances. The optical system design ensures coaxiality between the two channels, achieves diffraction-limiting quality, and allows adjustment of the laser spot size according to distance.

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