WordNet
- a small puncture that might have been made by a pin
PrepTutorEJDIC
- 針穴;(一般に)ごく小さい穴
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/07/10 00:11:10」(JST)
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For other uses, see Pinhole (disambiguation).
A pinhole is a small hole, usually made by pressing a thin, pointed object such as a pin through an easily penetrated material such as a fabric or a very thin layer of metal. Similar holes made by other means are also often called pinholes. Pinholes may be intentionally made for various reasons. For example, in optics pinholes are used as apertures to select certain rays of light. This is used in pinhole cameras to form an image without the use of a lens.[1] Pinholes on produce packaging have been used to control the atmosphere and relative humidity within the packaging.[2]
In many fields, however, pinholes are a harmful and unwanted side-effect of manufacturing processes. For example, in the assembly of microcircuits, pinholes in the dielectric insulator layer coating the circuit can cause the circuit to fail. Therefore, "[t]o avoid pinholes that might protrude through the entire thickness of the dielectric layer, it is a common practice to screen several layers of dielectric with drying and firing after each screening", thereby preventing the pinholes from becoming continuous.[3]
References
- ^ What is a Pinhole Camera?
- ^ Enrique Ortega-Rivas, Processing Effects on Safety and Quality of Foods (2010)m p. 280.
- ^ James J. Licari, Leonard R. Enlow, Hybrid Microcircuit Technology Handbook, 2nd Edition (2008), p. 162.
See also
UpToDate Contents
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English Journal
- Two conserved amino acids of juxtaposed domains of a ribosomal maturation protein CgtA sustain its optimal GTPase activity.
- Chatterjee A1, Datta PP2.
- Biochemical and biophysical research communications.Biochem Biophys Res Commun.2015 Jun 12;461(4):636-41. doi: 10.1016/j.bbrc.2015.04.079. Epub 2015 Apr 23.
- CgtA is a highly conserved ribosome binding protein involved in ribosome biogenesis and associated with stringent response. It is a 55 KDa GTPase protein consisting of GTPase, Obg and C-terminal domains. The function of the latter two domains was not clear and despite the importance, the mode of ac
- PMID 25912137
- Direct Comparison of Neck Pinhole Dual-Tracer and Dual-Phase MIBI Accuracies With and Without SPECT/CT for Parathyroid Adenoma Detection and Localization.
- Heiba SI1, Jiang M, Rivera J, Genden E, Inabnet W 3rd, Machac J, Kostakoglu L.
- Clinical nuclear medicine.Clin Nucl Med.2015 Jun;40(6):476-82. doi: 10.1097/RLU.0000000000000778.
- INTRODUCTION: There is uncertainty about accuracies of dual-phase (DP) and dual-tracer (DT) parathyroid scintigraphy with the newly added SPECT/CT. Although SPECT/CT was shown to be helpful in parathyroid adenoma (PA) localization, it may not have optimal resolution as pinhole. This study directly c
- PMID 25783516
- 3D elemental sensitive imaging by full-field XFCT.
- Deng B1, Du G, Zhou G, Wang Y, Ren Y, Chen R, Sun P, Xie H, Xiao T.
- The Analyst.Analyst.2015 May 21;140(10):3521-5. doi: 10.1039/c4an02401j. Epub 2015 Apr 2.
- X-ray fluorescence computed tomography (XFCT) is a stimulated emission tomography modality that maps the three-dimensional (3D) distribution of elements. Generally, XFCT is done by scanning a pencil-beam across the sample. This paper presents a feasibility study of full-field XFCT (FF-XFCT) for 3D e
- PMID 25834844
Japanese Journal
- 3検出器型ガンマカメラを用いたスタティックデータ収集型SPECTシステムの開発
- 市村 雄太,ICHIMURA Yuta
- 法政大学大学院紀要（理工学・工学研究科編） (56), 2015-03-03
- … The purpose of our research is to develop a new pinhole SPECT system for the imaging of a brain and myocardium that enables us to acquire projection data stationary using a commercially available triple head gamma camera system. … The proposed data acquisition geometry used multi-pinhole collimators with a size of 3mm attached to each gamma camera. …
- NAID 120005614156
- マルチピンホールによる蛍光X線CTの検出限界の改善 (医用画像)
- 笹谷 典太,砂口 尚輝,青木 大 [他]
- 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 114(482), 161-166, 2015-03-02
- NAID 40020433646
- 紙粉フィルタを実装した家庭紙向け欠陥検出カメラシステム:―統合カメラシステムTotalVisionTMによる生産性改善―
- 竹山 康宏
- 紙パ技協誌 69(5), 497-501, 2015
- 家庭紙業界において，品質管理とコスト削減の要望は年々厳しくなるにも関わらず，多くの家庭紙用抄紙機には，洋紙や板紙には標準的な欠陥検出機は設置されていない。その大きな理由が，従来型のラインスキャンを用いた欠陥検出機では，周辺環境を舞う紙粉を欠陥として捉える誤検出が多発するためであった。Papertech社のWebInspectorTMはマトリクス方式での撮像方式を採用した，紙粉の影響を排除するフィル …
- NAID 130005090015
Related Links
- PINHOLE CO.,LTD
- The pinhole camera - the camera without a lens. Information about the simplest image-creating device, its history, sample photographs and the PinholeDesigner program to help you with the necessary calculations.
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