Portable noninvasive inspection device

A portable noninvasive inspection device comprising

• a light source illuminating a target to generate an optical inspection signal;
• a probe head providing an optical path for said light source to receive said optical inspection signal;
• a probe tube arranged at a front end of said probe head, said probe tube comprising:
• a base arranged at a front end of said probe head and having a mounting seat at a center thereof, wherein a center of said mounting seat includes a light-extracting hole and an outer side of said mounting seat further includes at least one light-entering hole for receiving lights from said light source;
• an optical module arranged on said mounting seat;
• an inner sleeve arranged on said base and annularly telescoped with an outside of said optical module and located at an inner side of said light-entering hole, wherein said inner sleeve includes a first opening at a top thereof and a first reflective surface at an outer wall thereof;
• and
• an outer sleeve arranged on said base and annularly telescoped with an outside of said inner sleeve and said light-entering hole for forming a light channel with said inner sleeve, wherein said outer sleeve includes a second opening located at a top thereof and corresponds to said first opening and a second reflective surface located at an inner wall thereof, and when lights of said light source enters said light channel through said light-entering hole, and is projected to said target so as to reflect said optical inspection signal, which enters said optical module through said first opening and said second opening and finally enters said probe head through said light-extracting hole.
• at least one switched filter module arranged in said optical path, allowing said optical inspection signal to pass there through to generate a corresponding spectral signal;
• and
• an image sensor arranged behind said at least one switched filter module, receiving said spectral signal and generating a spectral image, said switched filter module being a rotary-type switched filter module.