Improvements in or relating to optical instruments.

摘要

Illumination of optical instruments such as microscopes or otoscopes effectuated by means of light-emitting diodes (L.E.D.) (6, 50), whereby the light therefrom may be strobed. An L.E.D. (6) may be positioned at the focal point of the inverted condenser lens (2) of a microscope. A plurality of L.E.D.'s (50) may be arranged in the probe portion (38) of an otoscope, which may also be provided with a source (28) of frequency-controlled sound channelled through the probe portion (38).