LENS FOR EXAMINATION OF EYE RETINE

LENS FOR EXAMINATION OF EYE RETINE

FIELD: medical engineering, ophthalmology. SUBSTANCE: lens for examination of eye retina is biconvex and aspherical. Such lens may be used for prompt primary examination by observing the picture created by lens through microscope. Aspheric surfaces of lens are essentially hyperbolic surfaces for whi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: D'JAKONOV G.I, TJUKOV V.A, AMERIKANOV I.A
Format: Patent
Sprache:eng
Schlagworte:
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Beschreibung
Zusammenfassung:FIELD: medical engineering, ophthalmology. SUBSTANCE: lens for examination of eye retina is biconvex and aspherical. Such lens may be used for prompt primary examination by observing the picture created by lens through microscope. Aspheric surfaces of lens are essentially hyperbolic surfaces for which actual axes coincide with optical axis of lens. Lens is calculated by equations for hyperbolic surfaces with due regard for its operating conditions. Lens is of simplified design. EFFECT: enhanced technological effectiveness. 3 cl, 1 tbl, 1 dwg