[특허]Optical property measurement and control system

Optical property measurement and control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-021/00 G01V-001/28 G01N-021/16
출원번호	US-0540251 (1975-01-10)
발명자 / 주소	Lodzinski Fred P. (Port Edwards WI)
출원인 / 주소	Nekoosa Papers Inc. (Port Edwards WI 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

In an illustrated embodiment, brightness, color, opacity and fluorescent contribution to brightness are measured by an on-line sensing head providing for simultaneous measurement of transmitted and reflected light. By measuring two independent optical parameters, paper optical properties of a partially translucent web are accurately characterized substantially independently of paper grade and weight. The instrument is designed so as to be capable of transverse scanning of a moving paper web on the paper machine, and so as to monitor desired paper optical characteristics with sufficient accuracy to enable on-line control of the optical characteristics of the paper being manufactured.

대표청구항 ▼

Apparatus for obtaining a quantitative measure of a paper optical property, said apparatus comprising: a. an optical measuring device having a receiving region for receiving in operative relation thereto a single thickness of paper sheet material, b. said optical measuring device having an optical system with at least two substantially independent photometric sensors and at least two distinct light energy paths each including at least light source and spectral response filter Means and a respective one of said photometric sensors, and each intersecting said receiving region prior to the respective associated photometric sensor, c. each of said at least two distinct light energy paths having substantially a common spectral response characteristic sufficient to characterize said paper optical property but being respectively arranged for collecting reflected and transmitted light energy from the receiving region after impingement of the light energy on a single thickness of paper sheet material at said region so as to essentially characterize the reflectance and transmittance of the paper sheet material, whereby the paper optical property is characterized with substantially greater accuracy than any characterization of said paper optical property by either a reflectance or a transmittance measurement taken by itself, and d. automatic digital computer means connected on line with said optical measuring device and coupled with the respective photometric sensors of said distinct light energy paths for receiving therefrom respective output signals in accordance with the reflectance and transmittance of the paper sheet material and automatically operable on the basis of said output signals to calculate a quantitative indication of said paper optical property, e. said optical system having two distinct light energy paths each having a spectral response characteristic substantially corresponding to the standard brightness spectral distribution of light energy, and said quantitative indication representing the standard brightness of said paper sheet material.

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Lucas Philip J., Method for inspecting manufactured articles.
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Lucas Philip J., Method for inspecting translucent objects using imaging techniques.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Optical property measurement and control system 원문보기

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