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MINIATURIZED OPTICAL HEAD WITH HIGH SPATIAL RESOLUTION AND HIGH SENSITIVITY, ESPECIALLY FOR FIBRED CONFOCAL FLUORESCENCE IMAGING

  • US 20100296178A1
  • Filed: 04/27/2007
  • Published: 11/25/2010
  • Est. Priority Date: 05/05/2006
  • Status: Active Grant
First Claim
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1. Miniaturized optical head provided to equip the distal end of a bundle of flexible optical fibres scanned by a laser beam, said optical head being intended to come into contact with a sample and excite said sample in a confocal manner;

  • this optical head comprising means for correcting spherical aberrations and focusing means;

    characterized in that the focusing means comprise;

    at least a first strongly convergent lens (L4) combined with a spherical or hemispherical lens (L5) arranged at the distal end of the optical head, andmeans for correcting axial and lateral chromatism that are provided with a single divergent lens (3b) the curvature of which is substantially centered on the pupil of the bundle of optical fibres and arranged at the correct distance from this pupil for which the lateral achromatization conditions coincide with the axial achromatization conditions;

    this divergent lens being combined with a second convergent lens (L3a) in the form of a doublet (L3).

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