Axicon mirror polishing device and polishing method

Abstract

The invention discloses a polishing device of an axicon and a polishing method of the axicon. The polishing device mainly comprises a motor, a rotary block, a rotary shaft, an adjusting screw, a connecting rod, a grinding tool frame and a grinding tool. The polishing device is characterized in that the motor drives the rotary block to rotate, the rotary shaft is embedded in the rotary block and is provided with the adjusting screw, the rotary shaft is connected with the connecting rod through bolts, the adjusting rod can be used for adjusting the position, on the rotary block, of the connecting rod, the connecting rod is connected with the grinding tool frame, and the grinding tool is fixed on the grinding tool frame through screws; during polishing, the motor drives the rotary block to rotate, the rotary block drives the rotary shaft to rotate, the rotary shaft then drives the connecting rod to move, and the connecting rod drives the grinding tool frame and the grinding tool to stretch and contract reciprocally in the horizontal direction to finish bus polishing work of the axicon. The polishing device of the axicon and the polishing method of the axicon can realize the polishing work of the axicon, and have the advantages that machining precision is high, the polishing device is simple in structure, and the polishing method is convenient to implement.

Description

technical field [0001] The patent of the invention relates to the field of polishing of optical elements, and is especially directed at a device and method for polishing the surface of an axicon mirror. The device is simple and easy to operate, and can achieve high surface shape accuracy and surface roughness. Background technique [0002] Axicon is a group of special optical elements whose working surface is conical, including concave axicon and convex axicon. It is a rotationally symmetric optical element whose focal line is along the direction of the optical axis. Due to the long depth of focus and narrow lateral width of this optical element, it is widely used in the fields of laser beam shaping, laser drilling technology, optical inspection, and laser resonator. Due to the very high precision requirements in these fields, strict requirements are placed on the surface shape accuracy and surface roughness of the axicon mirror. [0003] Since the working surface of the ax...

AI Technical Summary

Problems solved by technology

At present, the processing price of a convex axicon is about 10,000 US dollars, and the processing accuracy is not very high, while the reports on the concave axicon are even rarer.

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