Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Reexamination Certificate
2006-12-12
2009-08-18
Sugarman, Scott J (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
C351S205000
Reexamination Certificate
active
07575323
ABSTRACT:
The invention relates to a method and a device for determining the distance from a measurement point on a tissue surface (10, 13) of the eye (02), whereina) an initial light pulse (09a) is generated using a pulse light source (03) and is directed onto the measurement point of the eye,b) a reflector light pulse (11) reflected on the tissue surface (10, 13) at the measurement point is intercepted by a light sensor (04),c) a follow-up light pulse (09b) of the pulsed light source (03) is triggered by the detection of the reflector light pulse (11) at the light sensor (04),d) the pulsed light source (03) generates further follow-up light pulses (09b) depending on the detection of the reflector light pulses (11) caused by the respectively preceding follow-up light pulses (09b) and thereby oscillates at a frequency F1,e) the frequency F1is measured directly or indirectly,f) the length X of the ray path starting from the pulsed light source (03) via the measurement point to the light sensor (04) is derived from the measured value F1and the specific speed of light c at which the light propagates in the medium along the ray path.
REFERENCES:
patent: 4261367 (1981-04-01), Freese
patent: 4666269 (1987-05-01), Nakamura et al.
patent: 4738529 (1988-04-01), Hug
patent: 5280313 (1994-01-01), Kohayakawa
patent: 5347328 (1994-09-01), Sekine et al.
patent: 6053613 (2000-04-01), Wei et al.
patent: 6231186 (2001-05-01), Broadus et al.
patent: 6806963 (2004-10-01), Walti et al.
patent: 2003/0072007 (2003-04-01), Fercher
patent: 33 24 341 (1985-01-01), None
patent: 34 29 062 (1986-02-01), None
patent: WO 2005/058152 (2005-06-01), None
European Patent Office Search Report for EP Counterpart Patent No. 06023207.1 (Oct. 17, 2008).
Blakely , Sokoloff, Taylor & Zafman LLP
Oculus Optikgeraete GmbH
Pinkney Dawayne A
Sugarman Scott J
LandOfFree
Method and device for determining the distance from a... 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 and device for determining the distance from a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for determining the distance from a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4108544