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Method for measuring relative brightness of surface of original manuscript

A technology of relative brightness and measurement method, applied in image communication, electrical components, etc., can solve problems such as collision or affecting light source components, inconvenient measurement methods, etc.

Inactive Publication Date: 2006-12-13
TRANSPACIFIC SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the timing of measuring light 18b must be completed when all components of the scanner are installed, in order to prevent any component installation process from colliding or affecting the quality of the light source, the method of measuring reflected light 18b in the prior art is as follows: Figure 1F , a measurement hole must be opened at the bottom of the outer casing to measure, and Figure 1G It is necessary to install the reflector and the luminance meter in the narrow space of the outer casing. In addition to the inconvenient measurement method, it may also collide or affect the light source component during the measurement process, so that the adjusted light source component irradiates the original document surface 16a. Light 18b changes again

Method used

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  • Method for measuring relative brightness of surface of original manuscript
  • Method for measuring relative brightness of surface of original manuscript
  • Method for measuring relative brightness of surface of original manuscript

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Embodiment Construction

[0026] Some embodiments of the present invention will be described in detail below. However, in addition to the detailed description, the present invention can also be widely implemented in other embodiments, and the scope of the present invention is not limited by them, but is subject to the patent protection scope defined by the claims.

[0027] In addition, to provide a clearer description and easier understanding of the present invention, various parts of the scanning light source have not been drawn to size, some dimensions have been exaggerated compared to other relevant dimensions; irrelevant details have not been fully drawn, For simplicity of illustration.

[0028] When a light source illuminates an object, there are three types of interactions between the light source and the object: transmission, reflection, and absorption. Different objects have different ratios of transmission, reflection and absorption for light of different frequencies, but there will be the fo...

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Abstract

The method measures brightness after a light source transmits through a manuscript. Thus, transmissive brightness value divided by the transmissivity or multiplied by reciprocal of the transmissivity can obtain the brightness of the manuscript the light source irradiates. The advantages of the method are that if brightness of reflected light is to be measured, then some changes should be done to the scanner, and these changes can cause influence on the adjusted light source. The method increases efficiency of measurement.

Description

(1) Technical field [0001] The present invention relates to a method for measuring the brightness of the original surface, in particular to a method for measuring the relative brightness of the original surface with the back side of the original paper. (2) Background technology [0002] General scanners contain light source components, scanning components, transmission components, outer casings and other parts. The scanning process is to open the cover part of the outer casing, place the original to be scanned on the transparent flat glass of the outer casing, and cover the cover with the original to be scanned facing down. In addition to fixing the original, the function of the flip cover can make the original surface smooth if the original is uneven, so as to prevent the image from being blurred due to the uneven surface of the original. The light source assembly and the scanning assembly are driven by the transmission assembly. The light source assembly emits a white lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/00H04N1/04
Inventor 郭士文
Owner TRANSPACIFIC SYST