What is the difference between the hard wire and the soft wire of an endoscope

Rigid endoscopes usually use a rotating glass lens optical system inserted in a stainless steel tube to transmit images, so they are not bendable. The insertion of a soft endoscope is usually soft and flexible. The following two pictures are the straight rod mirror and fiber optic mirror of Beijing Weilin Company, corresponding to rigid endoscope and flexible endoscope respectively, for your reference. In principle, now widely used video mirror also belongs to the soft endoscope.

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