Variable-wedge rotating-disk beam attenuator for ophthalmic...

Details Variable-wedge rotating-disk beam attenuator for ophthalmic... Variable-wedge rotating-disk beam attenuator for ophthalmic...

A - Human Necessities

61

B

A61B 1/07 (2006.01) A61B 3/12 (2006.01) A61F 9/007 (2006.01)

Patent

CA 2680840

A variable-wedge rotating-disk attenuator for use in an ophthalmic endoilluminator is disclosed. The attenuator includes a wedge attached to an axle. The size of the wedge can be adjusted over a variable angle as measured through an arc of the wedge. The axle to which the wedge is attached rotates such that the wedge rotates around a pivot defined by the axle. The variable-wedge rotating-disk attenuator is located such that it affects the intensity of a light beam transmitted into an eye.

La présente invention concerne un atténuateur de faisceau à disque rotatif à prisme variable utilisable dans un endo-illuminateur ophtalmique. L'atténuateur inclut un prisme fixé à un axe. La taille du prisme peut être ajustée sur un angle variable tel que mesuré par un arc du prisme. L'axe auquel le prisme est fixé tourne, de sorte que le prisme tourne autour d'un pivot défini par l'axe. L'atténuateur à disque rotatif à prisme variable est placé de telle sorte qu'il modifie l'intensité d'un faisceau lumineux envoyé dans un AEil.

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