Interferometry testing of lenses, and systems and devices...

G - Physics – 01 – B

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G01B 9/02 (2006.01) G01M 11/02 (2006.01)

Patent

CA 2672900

Modified MZ (Mach-Zender) interferometers preferably are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing preferably is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer.

Des interféromètres MZ (Mach-Zender) modifiés sont de préférence utilisés pour analyser le front d'onde asphérique transmis d'une lentille ophtalmique, par montage de la lentille dans une cuvette présentant un carrousel rotatif qui peut prendre en charge de multiples lentilles. Une solution saline fraîche à température régulée est mise en circulation autour des lentilles, et la cuvette est disposée dans un bras d'essai vertical de la configuration de l'interféromètre. Un lancer de rayon inverse est employé pour retirer les aberrations induites dans le front d'onde lorsqu'il est représenté sous forme d'image directement depuis l'arrière de la lentille au détecteur de l'interféromètre.

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