Method of measuring diffractive lenses

Details Method of measuring diffractive lenses Method of measuring diffractive lenses

2006-11-29

2010-02-09

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

Lens or reflective image former testing

C356S123000, C356S125000, C351S159000, C351S168000

Reexamination Certificate

active

07659970

ABSTRACT:
A method and system for measuring an optical property of a multi-focal lens are disclosed. One embodiment of the method comprises: filtering out light transmitted by all but one of a plurality of diffraction orders of the lens to provide an unfiltered light from a single diffraction order; receiving the unfiltered light at a wavefront detector; and analyzing the unfiltered light at the wavefront detector to measure the optical property. The multi-focal lens can be a multi-focal diffractive intra-ocular lens. The measured optical property can be a discontinuity in the lens surface. Filtering can comprise blocking all but the unfiltered light using an aperture operable to let through the unfiltered light from the single diffraction order, and/or blocking all but the unfiltered light using an opaque obstruction operable to let through only a selected amount of light corresponding to the light transmitted by the single diffraction order. The method can further comprise generating an image quality parameter, such as a modulation transfer function, based on the measured optical property.

REFERENCES:
patent: 6819413 (2004-11-01), Neal et al.
patent: 2007/0002444 (2007-01-01), Piers et al.
patent: 2007/0165242 (2007-07-01), Scott et al.

Affiliated with

Also associated with

Rating

Method of measuring diffractive lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of measuring diffractive lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of measuring diffractive lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4201295