Integrated beam expanding lens and assembling method of the same

Abstract

The invention discloses an integrated beam expanding lens and an assembling method of the same. The integrated beam expanding lens includes a lens barrel with a circular cross section, wherein two ends of the lens barrel are each provided with a focusing lens; the two focusing lenses are arranged coaxially; and a center pin of the lens barrel penetrates through the center of the two focusing lenses. For the integrated beam expanding lens, as the two focusing lenses are arranged in the same lens barrel, the coaxiality requirement is guaranteed. And at the same time the two focusing lenses can be matched freely, and the diameter, the thickness, the focal length and other parameters of the two focusing lenses can select different standards while the lens barrel is formed by at least two sections with different diameters, so that the beam expanding lens with different multiplying powers is formed and can satisfy selection of different incident light beams.

Description

technical field [0001] The invention relates to the field of optical systems, in particular to an integrated beam expander and an assembly method thereof. Background technique [0002] The beam expander is widely used in the optical system of laser equipment because of its two main functions: [0003] 1. Change the laser beam diameter; 2. Change the divergence angle of the laser. [0004] Especially in the flight optical path, the divergence angle of the laser is very important; it directly affects the effect of the dot after the laser is focused at the entrance and far end of the optical path; the beam expander is mainly composed of two focusing lenses at the front and rear. [0005] Currently, beam expanders are commonly used in the market. Considering that the distance between the two lenses can be adjusted, the two lenses are installed in two independent mechanical lens barrels, and one of the lens barrels is placed in the other lens barrel. This design method is due to...

AI Technical Summary

Problems solved by technology

[0005] Currently, beam expanders are commonly used in the market. Considering that the distance between the two lenses can be adjusted, the two lenses are installed in two independent mechanical lens barrels, and one of the lens barrels is placed in the other lens barrel. This design method is due to There is a certain gap between the two lens barrels, which will easily lead to the misalignment of the lens barrels, and the two lenses are also misaligned. In the flight optical path, the dot difference will increase after the near light end and the far light end are focused.

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