Eye characteristic measuring apparatus

Details Eye characteristic measuring apparatus Eye characteristic measuring apparatus

2007-07-31

2007-07-31

Lester, Evelyn A. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S211000, C351S239000, C351S243000, C351S247000

Reexamination Certificate

active

10498229

ABSTRACT:
An eye characteristic measuring apparatus can effectively and properly measure and display wavefront aberration of an eye regardless of the eye state. A first illumination optical system (200A) illuminates a small area on a retina of the eye by a first light flux from a first light source unit (100). A first reception light optical system (300A) leads a part of light flux reflected from the retina (61) to a first light reception unit (510) via a first conversion member (400) for converting the reflected light flux into at least 17 beams. A measurement data judgment unit, for example, judges whether the measurement data is appropriate for calculating the wavefront aberration according to a first signal from the first light reception unit (510). For example, when the measurement data judgment unit judges that the measurement data is not appropriate, a first correction unit causes to display a check correction screen which will be detailed later and corrects the data into appropriate measurement data. Furthermore, according to the measurement data judged to be appropriate or the measurement data which has been corrected by the first correction unit (603), a calculation unit calculates the wavefront aberration of the eye (60) as optical characteristic. Moreover, a measurement result judgement unit for example, judges whether the wavefront aberration calculated by the calculation unit is appropriate. Moreover, for example, when the measurement result judgment unit judges that the measurement result is not appropriate, a second correction unit (607) causes to display the check correction screen and correct the data into appropriate measurement data.

REFERENCES:
patent: 6234978 (2001-05-01), Mihashi et al.
patent: 6460997 (2002-10-01), Frey et al.
patent: 6530917 (2003-03-01), Seiler et al.
patent: 6634750 (2003-10-01), Neal et al.
patent: 6997555 (2006-02-01), Dick et al.
patent: 2002/0041359 (2002-04-01), Mihashi et al.
patent: 2003/0038921 (2003-02-01), Neal et al.
patent: 2003/0058404 (2003-03-01), Thorn et al.
patent: 2003/0063257 (2003-04-01), Molebny
patent: 2003/0071967 (2003-04-01), Campin et al.
patent: 2004/0004696 (2004-01-01), Davis et al.
patent: 2005/0088618 (2005-04-01), Otten et al.
patent: 2005/0094100 (2005-05-01), Ross et al.
patent: 8-266469 (1996-10-01), None
patent: 10-305013 (1998-11-01), None
patent: 2001-204690 (2001-07-01), None
patent: 2001-321340 (2001-11-01), None
patent: 2002-314372 (2001-11-01), None
patent: WO 00/45759 (2000-08-01), None
N. Lopez-Gil et al., “Generation of Third-Order Spherical and Coma Aberrations by Use of Radially Symmetrical Fourth-Order Lenses”, Optical Society of America, vol. 15, No. 9, Sep. 1988, pp. 2563-2571.

Affiliated with

Also associated with

Rating

Eye characteristic measuring apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3805715