A color measuring instrument using a linear variable filter to measure the color of an object
A technology of optical filter and color measuring instrument, which is applied in the field of color measurement and can solve the problems of high cost, slow color measurement speed, and low precision
Active Publication Date: 2016-09-07
CHINA JILIANG UNIV +2
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[0004] The object of the present invention is to provide a color measuring instrument that utilizes a linear variable filter to measure the color of an object, which can utilize the advantages of the new LVF as a spectroscopic device for measurement, and overcome the low precision of the existing photoelectric integral instrument and the spectral color measurement. The shortcomings of slow color measurement speed and high cost of the instrument, to achieve high-precision and fast measurement of the color of objects
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[0021] Hereinafter, specific implementations of the present invention will be described in detail in conjunction with the accompanying drawings.
[0022] First, a colorimetric device used in the colorimetric method according to this embodiment will be described.
[0023] The experimental device includes: light source (1) - white light LED, collimating lens (2), integrating sphere (3) with a diameter of 50mm, which constitutes the lighting system; lens group (6), linear variable filter LVF spectroscopic device ( 7), forming a spectroscopic system, PDA detector (8), amplifier (9) forming a photoelectric receiving system, A / D analog-to-digital converter (10) and computer (11) forming a data processing system.
[0024] Light source (1)—white LED, which can emit strong full-spectrum white light in the visible light region in a short time.
[0025] The collimator lens (2) and the integrating sphere (3) form a coupling optical system to make full use of light energy.
[0026] The l...
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The invention provides a color measurement instrument for measuring an object color by use of a linear variable filter. The color measurement instrument has a structure that light emitted by a light source (1) shines onto an integrating sphere (3) through a collimator lens (2), and shines onto a sample (5) after diffusion by the integrating sphere; the diffused light passes through a lens assembly (6) and through the linear variable filter (LVF) (7) to shine onto a linear array PDA detector (8); and a signal outputted by the detector is connected to a computer (11) through an amplifier (9) and an A / D converter (10). By use of the highly stable LVF capable of fast light splitting as a light splitting device, and the PDA detector receiving the visible spectrum signals once and for all as an optoelectronic receiving system, the instrument achieves fast spectrum scanning and data processing of the spectrum signals, thereby obtaining color parameters of the object. The color measurement instrument has the characteristics of high measurement speed, high accuracy, simple operation and small size.
Description
technical field [0001] The invention relates to an object color measuring instrument, which belongs to the field of color measurement. The device can be well applied to color measurement in industries such as color photography, color printing, and paint manufacturing. Background technique [0002] With the continuous development of color science, it has been widely used in science and technology, industry, commerce, agriculture, art, military and other fields. By measuring the color, people can understand the color of the product or other attributes of the object (such as fruit ripeness, wine quality grade, etc.). The color measurement instrument is a tool to obtain the tristimulus value based on the International Commission on Illumination (CIE) through a certain method. In modern optical analysis instruments, the optical instruments used for color measurement can be divided into two categories according to the different color measurement principles: one is photoelectric ...
Claims
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IPC IPC(8): G01J3/46
Inventor 金怀洲邵茂丰金尚忠袁琨贾东芬鲁玉红曾珊珊杨初郑健
Owner CHINA JILIANG UNIV