Compact and stable dual-fiber-optic refracting collimator

Abstract

The compact and stable dual fiber optic refractive collimator is a device that takes laser light from two fiber optic cables, generating two beams of collimated light at increased diameters. This device is designed to be stable over a specific soak temperature range and maintain alignment through adverse vibration. Single or multiple beam configurations are possible with this design and the complexity goes linearly with beam quantity.What makes this device noteworthy is the simplicity of design plus ease in assembly and alignment. A precision alignment fixture is used instead of cumbersome, built-in, multiple degree of freedom features such as adjustment screws and flexures. This allows the collimator itself to be quite simple, compact and thermally stable.The dual collimator consists of a common housing, two fiber tip shuttle plugs allowing for adjustment in focus, and two laterally adjustable lens cells for beam alignment. The design has integral adhesive tack bonding features throughout and contains few parts keeping fabrication and alignment costs down. This paper covers the requirements, design, manufacture, assembly and performance of this optical device. The collimator has utility in precision interferometry. A patent has been filed.

The Design about Aiming at Amount of Change from Baseline Detector with Characteristics of High-Resolution

“…The baseline and target shooting accuracy are directly related, so that the base line change a very important test. The current detection of the parameter mainly use internal measuring instrument for reading the zero position, with the development of aiming device, the instrument with internal measuring which resolving power and precision have not been able to satisfy the request [1][2][3][4] . In response to this situation, we have developed the new instrument to measure the aiming at amount of changes from baseline, the apparatus takes with the combination of flat glass-based compensation method and reading such sine mechanism on the zero subdivision institutions.…”