← Back to Patent Explorer
JPH07427A Expired / Lapsed JP ⏱️ 0.0 years remaining

Method and apparatus for determining the color of light transmissive, light diffusive and light absorptive objects such as teeth

Assignee: Bertin Technologies SAS
•
Filing: 1993-12-22
•
Granted: —
•
Expires: 2013-12-22
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 義歯などの光透過性、光拡散性および光吸収 性対象物に拡散光束を照射し、対象物の後方散乱光によ り対象物の色を正確に決定する。 【構成】 本発明装置は、色消し複レンズ、赤外光フィ ルタ、紫外光フィルタおよびダイヤフラムを含み対象物 からの後方散乱光を受ける光学系と、後方散乱光を分光 分析するための干渉フィルタおよび光検出器と、光検出 器の出力信号を処理する制御手段を備える。かかる装置 を使用して、対象物の色が決定される。 (57) [Summary] [Purpose] A light-transmitting, light-diffusing and light-absorbing object such as a denture is irradiated with a diffused light flux, and the color of the object is accurately determined by the backscattered light of the object. The device of the present invention includes an optical system including an achromatic doublet lens, an infrared light filter, an ultraviolet light filter and a diaphragm for receiving backscattered light from an object, an interference filter for spectroscopically analyzing the backscattered light, and It comprises a photodetector and control means for processing the output signal of the photodetector. Using such a device, the color of the object is determined.

Inventors

  • 👤 Michel Vieillefosse
  • 👤 ミシェル・ヴィエイユフォス
  • 👤 Olivier Belle
  • 👤 オリヴィエ・ベル

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 12:20
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/51; A; A61; A61C; A61C13/00; A61C13/08; A61C13/082; G01J3/508; G01J3/513; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474; G01J3/02; G01J3/0272

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag