Stephen, Richard (1987) Microscope illumination. 4652093.
Full text not available from this repository.Abstract
The invention relates to the illumination of optical instruments such as microscopes or auriscopes by means of the light from light-emitting diodes (L.E.D.) (6, 50). Advantageously, the light from the diodes may be strobed. Examples described include the positioning of L.E.D.'s (6) at the focal point of the inverted condenser lens (2) of a microscope, and the inclusion of a plurality of L.E.D.'s (50) in the probe portion (38) of an auriscope. In the latter case, the device may also be provided with a source of frequency-controlled sound (28) channelled through the probe portion (38). Patent number: 4652093 Filing date: 16 Nov 1983 Issue date: 24 Mar 1987 Inventors: Richard O. Stephen, Colin D. Ockleford Assignee: Gwyndann Group Limited Primary Examiner: Vincent J. Lemmo U.S. Classification 350/500 International Classification G02B 2764