×

Optical device with a high collection efficiency and cytofluorimeter making use of the same

  • US 4,673,289 A
  • Filed: 06/17/1985
  • Issued: 06/16/1987
  • Est. Priority Date: 06/20/1984
  • Status: Expired due to Term
First Claim
Patent Images

1. An optical device permitting at least one of the two following operations, namely(a) the luminous excitation of an axial flow of material to be analyzed, said flow being directed along an axis and being able to emit light when said flow receives some light and(b) the collection of light emitted by said flow,said device comprising a first optical element and an analysis chamber which chamber has a spherical shape, is formed within the first optical element and has a symmetry centre, said chamber being open at two diametrically opposite ends,the first optical element having an inner concave spherical dioptre, an outer convex spherical dioptre, and an axis of symmetry passing through the symmetry centre of the chamber andthe first optical element being positioned in such a way that the axis of the material flow passes through the two ends and the centre of the chamber,said optical device also comprising a second optical element having an inner concave dioptre, an outer convex dioptre and an axis of symmetry, said second optical element positioned in such a way that the inner dioptre of the second optical element faces the outer dioptre of the first optical element, and that the symmetry axis of the second optical element coincides with the symmetry axis of the first optical element.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×