Method and device for manufacturing a spectacle lens and...

Details Method and device for manufacturing a spectacle lens and... Method and device for manufacturing a spectacle lens and...

2011-03-01

2011-03-01

Sugarman, Scott J (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S159000

Reexamination Certificate

active

07896493

ABSTRACT:
The invention relates to a method comprising the following steps:—a bridge width (b), a glass length (I), and a frame glass angle (fF) are predefined as eyeglass frame data;—a base curve (BK) as well as a nasal and a temporal facet position (aFn, aFt) are predefined as eyeglass lens data;—a user's pupil distance (pL, pR) is predefined as user data;—a horizontal angle of tilt (fG) of the eyeglass lens (12) is determined at a reference point in the used position, the reference point being the point of intersection between the horizontal main beam facing the eye in the neutral viewing direction (NBR) of the user and the area (14) of the eyeglass lens which faces the object, and the horizontal angle of tilt (fG) being the angle enclosed by a horizontal tangent (26) of the area (14) of the eyeglass lens (12) which faces the object at the reference point (B) and a straight horizontal reference line (HR) located on a plane that extends perpendicular to the horizontal main beam in the neutral viewing direction (NBR) of the user. Also disclosed are a device and a computer program product.

REFERENCES:
patent: 6637880 (2003-10-01), Yamakaji et al.
patent: 2003/0169397 (2003-09-01), Reichow et al.
patent: 2007/0242220 (2007-10-01), Guilloux et al.
patent: 2007/0242221 (2007-10-01), Guilloux et al.
International Search Report w/English translation dated Dec. 29, 2005 (Four (4) pages).
Corresponding Written Opinion of the International Searching Authority (Form PCT/ISA/237) including Forms PCT/IB/338 and PCT/IB/373.

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