13.
    发明专利
    未知

    公开(公告)号:AT270843T

    公开(公告)日:2004-07-15

    申请号:AT01201252

    申请日:2001-04-05

    Applicant: ALCON INC

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

    MEDICION Y CORRECCION OBJETIVAS DE SISTEMAS OPTICOS UTILIZANDO ANALISIS DE FRENTE DE ONDA.

    公开(公告)号:ES2279550T3

    公开(公告)日:2007-08-16

    申请号:ES97948547

    申请日:1997-11-21

    Applicant: ALCON INC

    Abstract: Sistema de corrección óptica (10) para corregir defectos visuales de un ojo (120), el sistema (10) de corrección óptica comprende: analizador de frente de onda (26) para determinar una diferencia de trayectoria óptica entre un frente de onda de referencia (131) y un frente de onda con aberraciones (130) del ojo (120), un conversor (40) para proporcionar una corrección óptica de cada ojo basada en la diferencia de camino óptico e índices de refracción del medio (126) a través del que pasa el frente de onda con aberraciones (130), caracterizado porque: el sistema de corrección óptica comprende además: un tren óptico en la trayectoria del frente de onda con aberraciones que comprende una primera lente mantenida en una primera posición fija y una segunda lente para cambiar la longitud de la trayectoria óptica entre dicha primera y segunda lentes.

    Apparatus and method for objective measurements of optical systems using wavefront analysis

    公开(公告)号:AU783649B2

    公开(公告)日:2005-11-17

    申请号:AU2985501

    申请日:2001-03-23

    Applicant: ALCON INC

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

    MEDICION OBJETIVA Y CORRECCION DE SISTEMAS OPTICOS QUE UTILIZA EL ANALISIS DE FRENTE DE ONDAS.

    公开(公告)号:ES2223874T3

    公开(公告)日:2005-03-01

    申请号:ES01941464

    申请日:2001-05-03

    Applicant: ALCON INC

    Abstract: Dispositivo óptico de corrección (300) para determinar una corrección de los defectos visuales de un ojo, comprendiendo el sistema óptico de corrección: una fuente de energía para generar un haz de radiación óptica; una óptica de enfoque dispuesta en el camino del haz para dirigir el haz a través del ojo (120), en el que el haz se refleja desde la retina del ojo como un frente de ondas (130) de radiación que emana del ojo; un analizador de frente de ondas (26) dispuesto en el camino del frente de ondas que emana de una córnea (126) del ojo para determinar una diferencia de camino óptico entre una onda plana (110) y el frente de ondas; y un convertidor (40, 90) para proporcionar una corrección óptica que, si se sitúa en el camino del frente de ondas, provoca que el frente de ondas se presente aproximadamente como una onda plana, medios para compensar la geometría curvada de la córnea que comprenden: - medios para medir las pendientes del frente de ondas (130) en un plano de referencia (131),- medios para proyectar dichas pendientes medidas de frentes de onda de regreso a los puntos de origen en la córnea del ojo asumiendo que presentan un radio de curvatura nominal, - medios para calcular un punto en el que dicho haz sale de la córnea, y - medios para reconstruir el frente de ondas basado en las pendientes medidas en las posiciones calculadas de la córnea.

    18.
    发明专利
    未知

    公开(公告)号:DE60104236D1

    公开(公告)日:2004-08-19

    申请号:DE60104236

    申请日:2001-04-05

    Applicant: ALCON INC

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

    20.
    发明专利
    未知

    公开(公告)号:DK1032809T3

    公开(公告)日:2007-05-14

    申请号:DK97948547

    申请日:1997-11-21

    Applicant: ALCON INC

    Abstract: A system and method for objective measurement and correction of focusing optical systems comprising optics disposed in the path of the beam (18) which directs the beam through the focusing optical system, e.g., and eye (120) and focuses the beam at its rear portion (122). The beam is diffusely reflected back and a wavefront analyzer (26) is disposed in the path of the wavefront projected from the optics and calculates the distortions as an estimate of aberrations of the focusing optical system.

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