Eye viewing device for retinal viewing through undilated pupil

Details Eye viewing device for retinal viewing through undilated pupil Eye viewing device for retinal viewing through undilated pupil

A - Human Necessities

61

B

A61B 3/13 (2006.01) A61B 3/15 (2006.01)

Patent

CA 2352148

The invention is a low cost, low input power eye viewing device well suited for viewing wide field retinal images through an undilated pupil. Included in the device are a converging light illumination system and an aperture stop. The converging light illumination system provides ease of entry of light rays into an eye, wide field retinal illumination, reduced glare and reduced power consumption. The aperture stop blocks unwanted received glare light not forming part of the retinal image. The device is made especially well suited for retinal viewing through an undilated pupil if the aperture is sized in accordance with the diameter of an undilated pupil.

Cette invention se rapporte à un dispositif de visualisation de l'oeil à faible coût et à faible puissance d'entrée, qui est bien adapté pour la visualisation d'images rétiniennes à grand angle à travers une pupille non dilatée. Dans ce dispositif sont inclus un système d'éclairage à lumière convergente et un diagramme d'ouverture. Le système d'éclairage à lumière convergente facilite l'entrée des rayons lumineux dans l'oeil, assure un éclairage rétinien à grand angle et réduit l'éblouissement et la consommation de puissance. Le diagramme d'ouverture bloque la lumière éblouissante reçue non désirée ne faisant pas partie de l'image rétinienne. Ce dispositif est particulièrement bien adapté pour la visualisation rétinienne à travers une pupille non dilatée, lorsque la taille de l'ouverture du diaphragme est conçue en fonction du diamètre de la pupille non dilatée.

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