Optical instruments

Details Optical instruments Optical instruments

1983-11-16

1987-03-24

Corbin, John K.

G02B 2764

Patent

active

046520937

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).

REFERENCES:
patent: 3585520 (1971-06-01), Yanai et al.
patent: 3867764 (1975-02-01), Dunmire et al.
patent: 4185891 (1980-01-01), Kaestner
patent: 4241251 (1980-12-01), Yonekubo
patent: 4351584 (1982-09-01), Chandesais
patent: 4467193 (1984-08-01), Carroll
patent: 4501961 (1985-02-01), Stauffer
Dawe Dig. (G.B.) vol. 13, No. 2 (Jun. 1970), Throwing New Light on Microscopy.
Andrews et al., Light Emitting Diode as a Short-Duration Stroboscope-Application to Visualization of Ultrasound, Jan. 1977, Journal of Physics E, vol. 10, No. 1, p. 95.

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