Optics: image projectors – Episcope
Patent
1979-02-02
1981-07-21
Haroian, Harry N.
Optics: image projectors
Episcope
353 39, 350238, 350 91, 356 71, G03B 2106
Patent
active
042794820
ABSTRACT:
A replica of biological surface tissue with negative topography lying on a platform is illuminated by means of light from a light source disposed inside a base on which the platform is mounted. Illuminating light from the source is transmitted to a location above the platform from which it is directed onto the platform such that the illuminating light impinges upon the replica at an angle approximately between 20.degree. and 42.degree. to the surface of the replica. Preferably, the illuminating light is transmitted by a fiber optical bundle and/or mirrors with flat or varying focal lengths. The platform is rotatable and tiltable, and is adjusted for viewing of the replica with positive topography. The illuminated replica is magnified by a microscope and projected thereby onto a screen for observation.
REFERENCES:
patent: 1267862 (1918-05-01), Haefliger
patent: 2146506 (1939-02-01), Maisch
patent: 2170967 (1939-08-01), Eppenstein et al.
patent: 2208882 (1940-07-01), Graff et al.
patent: 3229570 (1966-01-01), Erban
patent: 3785073 (1974-01-01), Tine
patent: 3865488 (1975-02-01), Del Rio
patent: 3900252 (1975-08-01), Di Salvo et al.
patent: 3989379 (1976-11-01), Eickhorst
Haroian Harry N.
Redken Laboratories Inc.
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