Workplace screen lens

Details Workplace screen lens Workplace screen lens

2008-03-04

2008-03-04

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S177000

Reexamination Certificate

active

10576929

ABSTRACT:
A workplace screen lens, having a workplace screen lens optimized at the middle of the lens for the middle viewing distances of approximately 60 centimeters to approximately 90 centimeters, and the progressive channel at the middle of the lens is at least 4 millimeters wide. The effect increases from the middle of the lens toward the bottom with the vertical coordinate y equal to approximately 0, reaching a near vision zone with an essentially constant effect at y equal to approximately −12 millimeters. The progressive channel has a width of least 15 millimeters in the near vision zone, preferably at the near-reference point, the effect decreases from the middle of the lens up to y equal to approximately +10 millimeters to approximately +12 millimeters above the middle of the lens. The progressive length amounts to approximately 20 millimeters to approximately 25 millimeters, the main progressive length is between approximately 7 millimeters and approximately 12 millimeters, and the minimum width of the progressive channel amounts to at least 4 millimeters.

REFERENCES:
patent: 4537479 (1985-08-01), Shinohara et al.
patent: 4796988 (1989-01-01), Dufour et al.
patent: 4854689 (1989-08-01), Dufour et al.
patent: 5506630 (1996-04-01), Ueno et al.
patent: 5864380 (1999-01-01), Umeda
patent: 6390623 (2002-05-01), Kokonaski et al.
patent: 2001/0030735 (2001-10-01), Yamamoto
patent: 2003/0128331 (2003-07-01), Yamamoto
patent: 2004/0189932 (2004-09-01), Shinohara et al.
patent: 36 25 526 (1987-03-01), None
patent: 36 35 616 (1987-04-01), None
patent: 0 627 647 (1994-12-01), None
patent: 0 911 670 (1999-04-01), None
patent: 0 911 673 (1999-04-01), None
patent: 1 429 172 (2004-06-01), None
International Search Report dated Feb. 22, 2005 including English Translation of relevant portion and PCT/ISA/237 (Fourteen (14) pages).
German Office Action dated Jul. 16, 2004 (Two (2) pages).
Form PCT/IB/338, Form PCT/IB/373, and Form PCT/ISA/237 (Nine (9) Pages) PCT/EP2004/012032.

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