Optometry measurement device

Details Optometry measurement device Optometry measurement device

2007-10-30

2007-10-30

Boutsikaris, Leonidas (Department: 2872)

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

C351S237000, C351S240000

Reexamination Certificate

active

10967593

ABSTRACT:
The present invention features a method and device for measuring characteristics of the human eye, particularly spherical refractive error. The device comprises a recorded hologram of an array of elements each bearing an identifying indicia. When the reconstructed hologram is viewed by a subject each of the indicia appear at different virtual distances. By indicating which indicia appear to be in focus the spherical refractive error of the eye and the range of accommodation is determined. The indicia are conveniently numbers that indicate dioptres. Also described is an apparatus for working the method. The apparatus can also be used to determine cylinder power and axis, binocular refraction and stereopsis.

REFERENCES:
patent: 3405778 (1985-08-01), None
patent: 3405778 (1985-08-01), None
patent: 09166955 (1997-06-01), None
patent: WO 92/201417 (1992-02-01), None
patent: WO 02/011612 (2002-02-01), None

Affiliated with

Also associated with

Rating

Optometry measurement device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3857606