Apparatus for measuring downward rotation amount of eyeball...

Details Apparatus for measuring downward rotation amount of eyeball... Apparatus for measuring downward rotation amount of eyeball...

2011-03-22

2011-03-22

Dang, Hung X (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

For interpupillary distance measuring or lens positioning

Reexamination Certificate

active

07909460

ABSTRACT:
An apparatus for measuring a downward rotation amount of eyeball that measures a length from a distance-vision eye point to a near-vision eye point of a spectacle lens actually worn by a wearer and attached to a frame having an upper side portion and a lower side portion, includes: a line-of-sight position detecting unit that detects a position of a line of sight corresponding to the distance-vision eye point of the wearer and a position of a line of sight corresponding to the near-vision eye point; and a computing unit that computes a distance between the position of the distance-vision eye point and the position of the near-vision eye point detected by the line-of-sight position detecting unit, wherein the line-of-sight position detecting unit has an arm member that is rotatable at one end and positioned at a lateral position of an eyeball of the wearer, a front detecting mechanism that is disposed on the other end side of the arm member and detects a front position of the eyeball of the wearer, and an arm rotation angle detecting unit that detects a rotation angle of the arm member.

REFERENCES:
patent: 6533418 (2003-03-01), Izumitani et al.
patent: 6659609 (2003-12-01), Mothes
patent: 6827443 (2004-12-01), Fisher et al.
patent: 7441895 (2008-10-01), Akiyama et al.
patent: 2010/0195045 (2010-08-01), Nauche et al.
patent: 2003-523244 (2003-08-01), None
patent: 2005-342186 (2005-12-01), None
patent: 2008-521027 (2008-06-01), None
patent: WO 2005/092173 (2005-10-01), None
patent: WO 2006/054985 (2006-05-01), None

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