Patent ID: 9091803
Filing Date: 2015-07-28
Classification: G01N,G02B

Abstract:
1. Optical apparatus for delivering to a flow-cell of a flow-cytometer a plurality of beams of laser radiation, each thereof having a different wavelength, the apparatus comprising: a dispersion-compensation prism; a plurality of directing-prisms equal in number to the number of laser-beams in the plurality thereof, the directing-prisms arranged to transmit the laser radiation beams directly therethrough, without internal reflection, and direct the laser-radiation beams into the dispersion compensation-prism, as a converging fan of beams in a first plane, with the beams transmitted by the dispersion-compensation prism as a converging fan of beams intersecting then proceeding as a diverging fan of beams in the first plane; and a plurality of optical elements including a cylindrical optical element, the plurality of optical elements configured and arranged to focus the diverging fan of laser-radiation beams as a plurality of spaced-apart elongated focal spots at a location in which the cytometer flow-cell is positioned.