Optics: measuring and testing – Refraction testing
Reexamination Certificate
2006-03-23
2008-11-18
Chowdhury, Tarifur R. (Department: 2886)
Optics: measuring and testing
Refraction testing
Reexamination Certificate
active
07453558
ABSTRACT:
The invention relates to a measuring device (01) for measuring the refraction properties of optical lenses (07), especially spectacle glasses, comprising a measuring light grid (20) for producing a plurality of light beams (16) which are deflected by the lens (07) as a result of refraction of light, and comprising a measuring light detector (12) on which the deflected light beams are projected and are there recorded electronically, and comprising an evaluation device in which the refraction properties of the lens (07) are determined from the measurement signals of the measuring light detector (12), wherein an additional measuring system (14, 20) for electronic measurement of the geometry of the front lens surface (18) and/or the rear lens surface (19) is provided in the device, wherein the measurement result of the additional measuring system (14) is included in the determination of the refraction properties of the lens (07) in the evaluation device.
REFERENCES:
patent: 5307141 (1994-04-01), Fujieda
patent: 5523836 (1996-06-01), Minix
patent: 6195164 (2001-02-01), Thompson et al.
patent: 1 136 806 (2001-09-01), None
patent: 1 248 093 (2002-10-01), None
European Patent Office Search Report for Counterpart EPO Patent Application No. EP 006000540-1236, 6 pgs. (Oct. 25, 2007).
Akanbi Isiaka O
Blakely , Sokoloff, Taylor & Zafman LLP
Chowdhury Tarifur R.
Oculus Optikgeraete GmbH
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