公开(公告)号：DE69737242T2

公开(公告)日：2007-10-25

申请号：DE69737242

申请日：1997-11-21

Applicant: ALCON INC

Inventor： FREY W ,  BURKHALTER H ,  ZEPKIN NEIL ,  PAPPELIERS EDWARD ,  CAMPIN A

IPC: A61F9/01 ,  G01M11/02 ,  A61B3/10 ,  A61B3/103 ,  A61F9/007 ,  A61F9/008 ,  G01J1/00

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.

公开(公告)号：DE69737242D1

公开(公告)日：2007-02-22

申请号：DE69737242

申请日：1997-11-21

Applicant: ALCON INC

Inventor： FREY W ,  BURKHALTER H ,  ZEPKIN NEIL ,  PAPPELIERS EDWARD ,  CAMPIN A

IPC: A61F9/01 ,  G01M11/02 ,  A61B3/10 ,  A61B3/103 ,  A61F9/007 ,  A61F9/008 ,  G01J1/00

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.

公开(公告)号：DE69902549T2

公开(公告)日：2003-04-17

申请号：DE69902549

申请日：1999-04-20

Applicant: ALCON INC

Inventor： LIANG JUNZHONG ,  BURKHALTER H

IPC: G01B11/16 ,  A61B3/10 ,  A61B3/103 ,  A61B3/15

Abstract: Optical characteristics of optical systems, such as the eye, are measured including vision defects of the eye using a collimated beam from a diode laser focused onto the anterior surface of the cornea of the eye for providing a finite source of secondary radiation on the retina of the eye, the image of which is close to a desired diffraction limited spot. The secondary radiation is reflected back from the retina as a reflected wavefront of radiation that passes through the eye and is directed onto a wavefront analyzer where distortions associated with the reflected wavefront are measured. By focusing on the cornea through a long focal length lens and thus converging the beam through a small angle, as opposed to typically focusing a collimated light onto the retina, the need for lenses or lens combinations, and the time required to adjust such to accommodate the differing vision of each patient is eliminated.