Ophthalomologic apparatus

Details Ophthalomologic apparatus Ophthalomologic apparatus

2007-08-21

2007-08-21

Mai, Huy (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S206000, C351S212000

Reexamination Certificate

active

11151813

ABSTRACT:
In order to accurately align an eye examining portion with the center of the pupil, (a) the interval d between illumination light source images PL and PR is an interval obtained when the operation distance has been properly position-aligned by other alignment means. (b) shows an interval d1in a state in which the operation distance is longer than to a proper position, and (c) shows an interval d2in a state in which the operation distance is shorter than the proper position. Even if the operation distance fluctuates when position alignment is effected with the center of the pupil, whereby the interval becomes d1and d2as shown in (b) and (c), a measuring portion is moved in front to rear direction and is made coincident with the reference interval d, as shown in (a), whereby a proper operation distance is obtained.

REFERENCES:
patent: 6733129 (2004-05-01), Masaki
patent: 2002/0036749 (2002-03-01), Isogai
patent: 9-66027 (1997-03-01), None
patent: 9-84760 (1997-03-01), None
patent: 9-131314 (1997-05-01), None

Affiliated with

Also associated with

Rating

Ophthalomologic 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 Ophthalomologic apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophthalomologic apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3852219