Patent ID: 7884998
Filing Date: 2011-02-08
Classification: G02B,G03F

Abstract:
1. An objective comprising: a focusing lens group comprising at least one focusing lens configured to receive light energy from a light energy source configured to provide light energy in a wavelength range of 480 to 660 nanometers and form focused light energy; a field lens oriented to receive focused light energy from said focusing lens group and provide intermediate light energy; a Mangin mirror arrangement positioned to receive the intermediate light energy from the field lens and form controlled light energy; and an immersion liquid between the Mangin mirror arrangement and a specimen; wherein every element in the objective is substantially aligned along a single axis and has a diameter less than 40 millimeters and the objective is configured to provide a numerical aperture in excess of 1.0 and a field size in excess of 0.05 millimeters.