Diamond color grading automatic measuring device

A technology of color grading and automatic measurement, applied in the direction of color/spectral characteristic measurement, jewelry testing, etc., to achieve the effect of ensuring consistency, ensuring analysis results, and reducing system errors

Inactive Publication Date: 2018-11-27
SHANDONG MEASUREMENT SCI RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention proposes a new type of diamond color grading automatic

Method used

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  • Diamond color grading automatic measuring device
  • Diamond color grading automatic measuring device
  • Diamond color grading automatic measuring device

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Embodiment 1

[0033] Embodiment 1, this embodiment provides the concrete structure of device, as figure 1 As shown, it mainly includes two parts: the microscopic area positioning system and the automatic spectrum acquisition and calculation system. Microscope positioning system includes a V-shaped sample slot 7 and a whiteboard, the V-shaped sample slot 7 is fixed on an adjustable two-dimensional platform 8, a light source 6 is arranged on one side of the sample 5, and a zoom lens 2 is arranged directly above the sample. Just above and one side of the variable-magnification focusing lens 2 are respectively provided with a semi-transparent half-mirror 4, these two half-transparent mirrors are arranged in parallel, and form an angle of 45 ° with the horizontal plane, the variable-magnification focusing lens 2 top A CCD detector 1 is arranged above the half mirror. CCD detector 1, variable magnification focusing lens 2, and half mirror 4 are fixed by an integral frame, and then the integral f...

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Abstract

Disclosed is a diamond color grading automatic measuring device. The device includes a microscopic micro-area positioning system and an automatic spectrum acquisition and calculation system. The microscopic micro-area positioning system includes a V-shaped sample trough and a whiteboard. A light source is arranged on one side of the whiteboard. A zoom lens is arranged directly above the whiteboard. Two semi-transparent and semi-reflective mirrors are respectively arranged directly above and on the side of the zoom lens. A CCD detector is arranged on the semi-transparent and semi-reflective mirror directly above the zoom lens. Light reflected by the other semi-transparent and semi-reflective mirror is transmitted to a spectrometer through a signal receiver and a signal line. The output endof the spectrometer is connected to a signal processing computer. The device of the invention adopts microscopic micro-area positioning measurement and selects a measurement area of common characteristics of a to-be-measured diamond so as to eliminate color differences of the diamond of the same color grade caused by the size. The device can rapidly and accurately measure color coordinates of thediamond, and can automatically convert the color coordinates to color grading levels corresponding to a diamond grading system.

Description

technical field [0001] The invention belongs to the technical field of diamond color grading, and relates to an automatic measuring device for diamond color grading. Background technique [0002] The specific method of diamond color grading is to visually compare the samples with a set of standard round diamond samples (7-10 diamonds) with calibrated color grades. Color grading personnel are required to be professionals with normal color vision and professional skills training, preferably aged 20 to 50. During the color comparison, two or more technicians should complete the color grading of the same diamond independently and obtain a unified result. [0003] The working area is required to be a neutral color, that is, white, black or gray, and it is best not to have other colors. Including tables and chairs in the room, walls, floors, curtains, staff clothing, glasses color and even skin color all have an impact on color grading. [0004] The light working area should av...

Claims

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Application Information

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IPC IPC(8): G01N21/87G01N21/33
CPCG01N21/33G01N21/87
Inventor 程佑法范春丽李建军刘海彬朱红伟张丛森
Owner SHANDONG MEASUREMENT SCI RES INST
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