Fiber collimator having high-precision ray machine coaxiality, and assembling method thereof

Abstract

The invention relates to a fiber collimator having high-precision ray machine coaxiality, and an assembling method thereof. The fiber collimator is composed of a fiber collimator body (1), an inner casing tube (2) and an outer casing tube (3). The fiber collimator body (1) is arranged at the rear end of the inner casing tube (2); and the outer casing tube (3) sleeves the outer side of the inner casing tube (2). A collimator free end fixed element (6), a hinge (4), and a collimator joint end fixed element (7) are successively arranged between the inner casing tube (2) and the outer casing tube (3) from front to back; the collimator free end fixed element (6) is arranged at the front end of the outer casing tube (3); the collimator joint end fixed element (7) is arranged at the rear end of the outer casing tube (3); and the hinge (4) is arranged at the front side of the collimator joint end fixed element (7). According to the fiber collimator and the assembling method thereof, the structure is simple; the ray machine coaxiality is high; a few adjusting steps are arranged; and the assembling process is simple.

Description

technical field [0001] The invention relates to an optical fiber collimator with high-precision optical-mechanical coaxiality and an assembly method thereof. Background technique [0002] In fiber optic devices, the fiber collimator is a key device. Traditional fiber collimators such as figure 1 As shown, it is mainly composed of optical fiber and its fixing structure, lens, and peripheral fixing parts. Due to the gap between the peripheral metal sleeve and glass tube, and the difference in material refractive index and behavior error between the fiber core and lens etc., the laser beam emitted from the lens is not parallel to the mechanical axis of the metal tube. Therefore, when fiber collimators are used in other optical devices, two matching fiber collimators often require a professional and complex alignment process, which not only restricts the manufacturing efficiency of related optical devices, but also affects the quality of optical devices. One of the reasons fo...

AI Technical Summary

Problems solved by technology

Therefore, when fiber collimators are used in other optical devices, two matching fiber collimators often require a professional and complex alignment process, which not only restricts the manufacturing efficiency of related optical devices, but also affects the quality of optical devices. One of the reasons for the high cost

However, in some occasions, for example, in fiber optic rotary connectors, matching adjustments cannot be performed between two fiber collimators, which restricts the use of fiber collimators

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