High sensitivity compact optical head and high spatial resolution of the fiber confocal fluorescence imaging

摘要

[Challenge] [SOLUTION] The present invention relates to an optical head which is compact with a distal end of the flexible optical fiber beam which is scanned by the laser beam, the optical head is in contact with the sample, It is designed to be excited by confocal the sample, the optical head is composed of a focusing means and the means to correct the spherical aberration. According to the present invention, the focusing means, the first lens having a high astringent associated hemispherical lens (L5) and (L4), curvature of the fiber optic beam or spherical lenses disposed at the distal end of the optical head aligned substantially in the center of the pupil, the pupil, means for correcting lateral chromatic aberration and chromatic aberration converging lens axis on a single that has been placed in the exact position where the Jiku-kata achromatic state and YokoOsamuiro state matches includes the door, in the form of a doublet lens (L3) converging lens of this second converging lens is in (L3a) coalescence.