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LIGHT PROJECTION TARGET MIRE FOR CURVATURE MEASUREMENTS

Document type:Patente
Inventor(s): Liliane Ventura; Cassius Riul
Applicant: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) ; Universidade de São Paulo (USP)
Deposit date: April 2005, 15
INPI register:
PCT/BR2005/000059
IPC: A61B 3/107
Abstract

(EN) The present invention refers to the light ring target mire (8) used for accurate measuring of the radii of curvature of spherical and non spherical reflective surfaces, with a fixation target for the patient, holes that allow the observation by the slit lamp (7), holes to be illuminated (4), using an illumination system composed by a header which has an exit lens from the illumination system, focused filament, an intermediary circle and a light stop with an useful area for the target mire, being alternatively projected with arc shaped rings, or passing through rings in a precise circumlinear shape, allowing to be used with different types of illumination systems, providing measurements of any reflective surface, not being limited to ocular exams.


FAPESP's process: 00/13218-4 - System of automatic measurement of the cornea's curvature rays with a slit lamp: automatic keratometer with slit lamp
Grantee:Liliane Ventura Schiabel
Principal Investigator:Liliane Ventura Schiabel
Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE

Grantee:Oswaldo Massambani
Principal Investigator:Oswaldo Massambani
Support Opportunities: Research Grants - Support for Intellectual Property Rights and Licensing (PAPI/Nuplitec)