Endoscopic plasma monochromatic light analysis system

An endoscopic plasma monochromatic light analysis system, characterized by comprising components below:

• a first position adjustment motor, a second position adjustment motor, a third position adjustment motor, a fourth position adjustment motor, a first reflecting mirror, a collecting lens, an optical fiber array, an indicating optical fiber, an indicating light source, a telecentric collimating lens, a first beam splitter, a second beam splitter, a first narrowband filter, a first converging lens, a first optical detector, a second narrowband filter, a third narrowband filter, a second converging lens, a third converging lens, a second optical detector, a third optical detector, a fifth position adjustment motor, and a sixth position adjustment motor, with positional relationships among the components as follows:
• after the indicating light source is turned on, the indicating light is transmitted through the indicating optical fiber to a right exit position of an optical fiber array, then becomes a parallel light beam after passing through the telecentric collimating lens;
• the first beam splitter and the second beam splitter extract partial light beams at two positions in a path of the parallel light beam, the partial light beams respectively pass through the second narrowband filter and the third narrowband filter, as well as the second converging lens and the third converging lens, and are finally imaged on photosensitive chips of the second optical detector and the third optical detector;
• the fifth position adjustment motor is used to adjust a position of the second optical detector, and the sixth position adjustment motor is used to adjust a position of the third optical detector, until optimal imaging clarity is achieved;
• and by comparing a difference in light spot sizes obtained by the second optical detector and the third optical detector, a cone angle of the light beam can be calculated, based on which the third position adjustment motor adjusts a position of the right exit position of the optical fiber array to obtain a parallel light beam;
• the parallel light beam passes through the first narrowband filter and then becomes a monochromatic light, the monochromatic light is imaged onto a photosensitive chip of the first optical detector by the first converging lens, and a position of the first optical detector is adjusted via the fourth position adjustment motor to achieve optimal imaging clarity;
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• after optical collimation and focus adjustment, the indicating light source is turned off, and the first position adjustment motor is used to orient the first reflecting mirror toward a target plasma;
• a plasma light collected by the first reflecting mirror is imaged at a left entrance position of the optical fiber array via the collecting lens, transmitted through the optical fiber array to its right exit position, and then converted into a parallel light beam by the telecentric collimating lens;
• the parallel light beam passes through the first narrowband filter and then becomes a monochromatic light beam, and the monochromatic light beam is then imaged onto the first optical detector by the first converging lens, so as to obtain two-dimensional image information of the monochromatic light, wherein adjusting the left entrance position of the optical fiber array via the second position adjustment motor enables further adjustment of imaging clarity.