an optical fiber launch port

Abstract

The invention relates to the field of photoelectric sensors, and specifically provides an optical fiber launch port, wherein the launch port includes: a fixing part; at least one first cylindrical lens arranged on the fixing part, used for transforming light on the Y-axis, The light exit end of the incident optical fiber is located at the focal point of the first cylindrical lens; at least one second cylindrical lens is arranged on the fixed part for transforming the light on the X-axis, and the second cylindrical lens Set on the light exit side of the first cylindrical lens, the axes of the first cylindrical lens and the second cylindrical lens are vertically arranged; the first axial expansion component, the first axial expansion component It is arranged on the side of the second cylindrical lens away from the first cylindrical lens; the present invention changes the emission intensity of the incident optical fiber through the vertically arranged first cylindrical lens and the second cylindrical lens. light to form a rectangular beam, so that the width and divergence angle of the beam emitted from the fiber optic system can be adjusted.

Description

technical field [0001] The invention relates to the field of photoelectric sensors, in particular to an optical fiber transmitting port. Background technique [0002] When a general optical fiber system is converted into parallel light, the output port of the optical fiber is placed at the focal point of the lens, and a convex lens is used to condense the light output from the optical fiber into a parallel beam. For example, in the Chinese patent publication number "CN109443240A", the light passes through the lens 3 to form a parallel beam and exits from the lens 3. In this way, a parallel beam with a consistent light angle can be obtained. The beam cross-section is the cross-section of the lens, which is generally round. [0003] However, in some sensors, the cross-sectional shape of the beam generally requires a rectangle, and its divergence angle also has other requirements. Specifically, on the plane perpendicular to the beam propagation, there are two vertical directio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an optical fiber launch port to solve the problem that the beam width and divergence angle cannot be adjusted in the current optical fiber system

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