An adjustment and fixing mechanism for an optical element

Abstract

The invention discloses an optical element adjustment and fixing mechanism. The invention includes an optical bottom plate, an optical carrier, an optical bracket, an adjustment screw, a fixed top screw and an elastic buffer, the optical element is fixed on the optical bracket, and a protruding pin shaft is arranged on the lower surface of the optical bracket, and the optical carrier There is a central hole that matches with the pin shaft, so that the optical bracket can be rotated and adjusted at any angle on the plane of the optical carrier. The tension force of the stage, the optical stage and the optical bottom plate are connected by multiple adjustment screws, which are used to adjust the distance between the optical stage and the optical bottom plate, and realize the change of the three-dimensional angle of the optical element. The stage abuts against the optical bottom plate and is used to fix the distance between the optical stage and the optical bottom plate.

Description

technical field [0001] The invention relates to the technical field of optical element adjustment, in particular to an adjustment and fixing mechanism for optical elements. Background technique [0002] Optical instruments refer to a class of instruments that can generate light waves and display images, or receive light waves and analyze and determine their light properties. Optical instruments are usually composed of single or multiple optical components. In order to obtain clearer and more accurate results, usually It is necessary to adjust the angle of the optical elements in the optical instrument. The adjustment mechanism of the optical elements in the prior art has the problems of large volume and heavy weight, which is not conducive to the miniaturization of the instrument or the adjustment process is complicated, the fixing effect is general, and it is difficult to upgrade and maintain. [0003] For example, Raman spectrometers are often used to identify material com...

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Problems solved by technology

[0002] Optical instruments refer to a class of instruments that can generate light waves and display images, or receive light waves and analyze and determine their light properties. Optical instruments are usually composed of single or multiple optical components. In order to obtain clearer and more accurate results, usually It is necessary to adjust the angle of the optical elements in the optical instrument. The adjustment mechanism of the optical elements in the prior art has the problems of large volume and heavy weight, which is not conducive to the miniaturization of the instrument or the adjustment process is complicated, the fixing effect is general, and it is difficult to upgrade and maintain.

[0003] For example, Raman spectrometers are often used to identify material components and analyze molecular structures. Raman spectrometers generally consist of a laser source, a sample chamber, a spectroscopic system, a photoelectric detector, and a computer processing system. The Mann spectrometer is miniaturized, and the existing production practice generally adopts a fixed grating structure, that is, the grating in the spectrometer does not shift during use and storage. There are two ways to fix the grating adjustment. Miniaturization of the grating fixing method of the Mann spectrometer: that is, the same principle as that of the large Raman spectrometer is used to miniaturize the grating adjustment structure. Minimization and weight reduction; the second is to use the direct fixing method: the grating is directly fixed on a certain position of the instrument (generally by bonding), or the grating is fixed by a preset part. Although this method saves space and weight, it is not suitable for The processing accuracy of the spectrometer frame or pre-assembled parts is extremely high, and it has high requirements for the proficiency of the assembler and the assembly environment, and this method cannot make secondary adjustments to the grating after the grating is fixed. The general requirements for the Raman spectrometer It is to detect the Raman scattered light from the sample to the greatest extent, and the inability to make secondary adjustments may lead to the phenomenon that the intensity of the collected Raman spectrum is weak or even the spectrum cannot be collected, which reduces the analytical performance of the small Raman spectrometer

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