par-centricity
Japanese translation: 一軸性
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| 20:07 Sep 23, 2010 |
| English to Japanese translations [PRO] Tech/Engineering - Mechanics / Mech Engineering / optics | |||||||
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|  Selected response from: Soonthon LUPKITARO(Ph.D.) Thailand Local time: 08:33 | ||||||
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| Summary of answers provided | ||||
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| 4 | 一軸性 |
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| 3 | 焦点 |
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Answers
4 hrs confidence: 
一軸性 Explanation: Par-centricity = only one optical axis of objective lens: material property of lens. See http://microscopelabo.jp/learn/011/index_2.html for example. |
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3 hrs confidence:
焦点 Explanation: これは、焦点（ｐａｒｃｅｎｔｒｉｃｉｔｙ）調整を可能にす る。同一焦点性を提供するために、調整シームは、２つの対物レンズ４３、４５ のいずれかとレボルバー１４との間で追加されて、共通の焦点面までの距離を低 減する。 http://www.ekouhou.net/細胞をイメージングするシステムおよび方法/disp-A,2008-1121... -------------------------------------------------- Note added at 3 hrs (2010-09-23 23:32:07 GMT) -------------------------------------------------- http://www.opticsplanet.net/invertoscope-test.html http://www.olympus.co.jp/jp/insg/ind-micro/lcsm/principle/ -------------------------------------------------- Note added at 4 hrs (2010-09-24 00:49:18 GMT) -------------------------------------------------- Parcentric | Parcentric Key Words: Definition:Matched sets of microscope objectives are parcentric if a specimen centered in the field-of-view of one objective remains centered when the nosepiece is rotated to bring another objective into use. Parcentricity depends of the quality of the manufacture and design of the microscope. An acceptable level of parcentricity is defined by a centre of the field that does not go outside the inner one third of the field-of-view with any objective of a matched set. http://www.nikoninstruments.eu/Information-Center/Parcentric -------------------------------------------------- Note added at 6 hrs (2010-09-24 03:00:55 GMT) -------------------------------------------------- （像の中）芯ずれのない というのがBETTERかもしれません。 http://www.olympus.co.jp/jp/insg/ind-micro/special/uis2/ http://www.olympus.co.jp/jp/insg/ind-micro/special/uis2/cont... http://industrial-microscope.olympus-global.com/en/ga/specia... -------------------------------------------------- Note added at 6 hrs (2010-09-24 03:03:24 GMT) -------------------------------------------------- H. Parcentricity Parcentricity means that an object in the center of the field will stay in the center of the field no matter which objective is being used. To test this set the microscope up properly and find an identifiable object at high power. Switch to each objective in turn and see if it is in the center. If you have performed Kohler illumination correctly you can close the field diaphragm and observe the image of the field diaphragm's position in the field of view. It should stay in the center of the field. Any deviation is a loss of parcentricity. There will be some variation in the field center objective to objective. To be acceptably parcentric the center of the field should not vary more than one third of the field of view; ie. if the object is at the center with one objective it will not go out side the inner one third of the field of view with any objective. Sometimes parcentration can be corrected by a skilled service person but usually parcentration problems are caused by a bad nosepiece or is inherent in the construction of the instrument. Parcentricity is based on the design and manufacture of the nosepiece, mainly, and is a good indication of the general quality of the instrument. http://www.mindspring.com/~smskjc/physik.htm |
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