Optical path control system and optical module

Abstract

The present invention discloses an optical path control system and an optical module. The system comprises a focusing lens and an optical path acting assembly; the focusing lens is used for converging light beams passing through the focusing lens; the optical path acting assembly is used for controlling the transmission direction of the light beams; and when a plurality of incident light beams pass through the optical path acting assembly and the focusing lens sequentially, the optical path acting assembly converges the plurality of incident light beams, and the focusing lens converges each incident light beam into a light spot. According to the optical path control system and the optical module of the present invention, the intervals of the light beams can be adjusted through the functions of the optical path acting assembly and the focusing lens, and therefore, the structure of the optical path control system is simple, the number of optical path devices is reduced, the size of the whole optical path control system is greatly reduced, and thereby, the size of the whole optical module can be reduced; the relative positions of the focusing lens and the optical path acting assembly can be fixed easily, and therefore, the relative accuracy of focusing positions is improved; and the optical path acting assembly can be designed independently to realize independent control on the light beams, and the transmission direction and focusing point of each light beam can be independently controlled, and therefore, the degree of adjustment freedom is high.

Description

technical field [0001] The present application relates to the technical field of manufacturing optical communication components, in particular to an optical path control system and an optical module. Background technique [0002] In optical communication, due to the difference in the channel spacing of the optical communication devices connected to each other, it is often necessary to adjust the optical path spacing to an appropriate range before performing coupling transmission. In addition, due to the small aperture of the photodetector, it is difficult to fully couple the divergent light beams into the photodetector, resulting in signal loss. [0003] Such as figure 1 As shown, in the traditional multi-channel parallel optical path system, the optical path spacing is adjusted by the optical path control system 1, and the method of changing the optical path spacing and focusing method needs to use multiple objective lenses 2 and multiple prisms 3, and the distance between...

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Problems solved by technology

In addition, due to the small aperture of the photodetector, it is difficult for the divergent light beam to be fully coupled into the photodetector, resulting in signal loss

[0003] like figure 1 As shown, in the traditional multi-channel parallel optical path system, the optical path spacing is adjusted by the optical path control system 1, and the method of changing the optical path spacing and focusing method needs to use multiple objective lenses 2 and multiple prisms 3, and the distance between the objective lens 2 and the prism 3 The distance between them and the distance between multiple prisms 3 are relatively large, resulting in the bulky size of the entire optical path control system 1, which is not conducive to the miniaturization of optical modules; Precise control is required, and the assembly process is more complicated

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