Patent EP0367647A1 successfully refreshed from Google Patents.
EP0367647A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for gathering colorimetric information in situ, especially at a tooth in the mouth
Assignee: Bertin Technologies SAS
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Filing: 1989-10-12
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Granted: —
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Expires: 2009-10-12
Abstract
Abstract Apparatus for taking in situ colorimetric information, comprising a casing (12) wherein are housed a lighting source (18), an optical system (24) for transmission of a light beam to the object to be lit, a detector (22) for detecting the light level, a light-retaking optical system (34), a spectrometer (40), photodetectors (50) and electronic circuits (52) for the treatment of signals which are housed in the rear portion (14) of the casing and are connected to a microprocessor (56). The invention allows particularly to determine the color of the teeth of a person.
Inventors
- 👤 Yves Dordet
- 👤 Jean-Michel Decaudin
- 👤 François Duret
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0059; A61B5/0082; A61B5/0088; G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; A61B5/74; A61B5/742; A61C; A61C19/00; A61C19/10; G01J3/508; G01J3/12; G01J3/18; G01J3/28; G01J3/30; G01J3/36; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474; G01N2201/00; G01N2201/06; G01N2201/069; G01N2201/0696; G01N2201/12; G01N2201/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3421821A
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FR1535476A
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US3802783A
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US4624572A
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US4484819A
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US4758085A
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