Light guiding device and method

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/00 (2006.01) A61B 19/00 (2006.01) A61M 5/42 (2006.01) G01B 11/27 (2006.01) G02B 23/00 (2006.01) G12B 5/00 (2006.01)

Patent

CA 2338786

The present invention provides an instrument (40) adapted for alignment with a light beam (66), which instrument includes an instrument body (43) having a point of entry of the light beam, a light conducting channel, and a sensing element (25) carried by the instrument (40) and being spaced from the point of entry of the light beam (66). The sensing element (25) serves to provide indication of alignment between the instrument (40), and the light beam (66). The light beam (66) travels inside the instrument (40) along the channel to the sensing element (25). Light guiding devices are disposed inside the channel to increase precision of alignment. The light guiding device has a wall forming a guiding passage inside the guiding device. When disposed inside the instrument (40), the wall of the guiding device blocks non-aligned light beams from reaching the sensing element (25), while allowing the aligned light beams to propagate through the guiding passage inside the instrument (40) to the sensing element (25).

L'invention porte sur un instrument (40) conçu pour s'aligner sur un faisceau (66) lumineux comportant un corps (43) présentant un point d'entrée du faisceau (66) lumineux, un canal conducteur de lumière, et un détecteur (25) monté dans l'instrument (40), distant du point d'entrée du faisceau (66) lumineux et servant à fournir une indication sur l'alignement, bon ou mauvais, entre l'instrument (40) et le faisceau (66) lumineux. Ledit faisceau (66) traverse l'instrument (40) via le canal conducteur entre le point d'entrée du faisceau (66) et le détecteur (25). Un ou plusieurs guides de lumière, placés dans le canal conducteur, améliorent la précision d'alignement entre l'instrument (40) et le faisceau (66). Un guide de lumière comporte une paroi délimitant le canal de guidage et empêchant les faisceau (66)x non alignés s'atteindre le détecteur (25), tout en permettant aux faisceau (66)x alignés de se propager sur une voie déterminée pour atteindre le détecteur (25).

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