Inventors:
Robert W. Allington - Lincoln NE
Wylee D. Brunken - Lincoln NE
Lawrence L. Sedlak - Dwight NE
International Classification:
G01O 351
G01N 2186
Abstract:
To scan gels optically, a gel scanner includes a gel holder and an optical system mounted for motion with respect to each other. The optical system includes a tungsten halogen lamp, first aperture, second aperture, beam splitter and first and second light paths; the first aperture having a dimension in the direction of motion of the gel with respect to the optical system of less than 0. 5 millimeter and a dimension in a direction transverse to the direction of motion of less than 10 millimeters. The lamp and first aperture are mounted on one side of said gel holder and the second aperture is mounted on the other side of said gel holder. The beam splitter transmits light in a first direction along the first light path and in a second direction along a second light path with the: (1) first light path including a first photodetector and an interference filter for passing light within the range of 400 nanometers wavelength to 700 nanometers wavelength to it; and (2) the second light path having a second photodetector.