Small digital optical interferometer

Abstract

The invention discloses a small digital optical interferometer which comprises an optical platform, a semiconductor laser, an expanded beam lens, a collimating lens, an interference element and a CCD(Charge Coupled Device) camera, wherein a laser bracket is arranged on one side of the optical platform; the semiconductor laser is mounted on the laser bracket; an expanded beam lens bracket is arranged at a position, which is close to one side of the laser bracket, of the middle of the optical platform; the expanded beam lens is arranged on the expanded beam lens bracket; a collimating lens bracket is arranged in the middle of the optical platform; the collimating lens is arranged on the collimating lens bracket; a CCD camera bracket is arranged on the other side, which is opposite to the laser bracket, of the optical platform; and the CCD camera is arranged on the CCD camera bracket. The small digital optical interferometer disclosed by the invention is capable of demonstrating multipledifferent interference phenomena and meeting the requirements on demonstration on multiple occasions and independent experiments of students, and is obvious in experimental phenomenon, convenient inobservation of students, compact in equipment, wholly small in size and convenient to move.

Description

technical field [0001] The invention relates to the technical field of teaching instruments, in particular to a small digital optical interferometer. Background technique [0002] In recent years, with the continuous development of my country's social economy, people have paid more attention to education and teaching. In order to cultivate students' hands-on ability and facilitate students to better understand what they have learned, teachers generally conduct experiments with students to teach, intervene The instrument is a general term for a very broad class of experimental techniques. Its idea is to use the wave superposition to obtain the phase information of the wave, so as to obtain the physical quantities concerned by the experiment. [0003] However, the existing optical interferometric demonstrator has the following disadvantages: [0004] 1. The existing optical interferometers can only demonstrate the interference phenomenon of double slits with a fixed distance, ...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a small digital optical interferometer, which solves the problems of inaccuracy, inconvenient movement and inconvenient viewing by many people in the existing technical phenomena

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