著者
片岡 俊彦 遠藤 勝義 井上 晴行 稲垣 耕司 森 勇藏 広瀬 喜久治 高田 和政
出版者
公益社団法人精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.60, no.8, pp.1122-1126, 1994

The probe of this scanning near-field optical microscope (SNOM) is a dielectric sphere of 500 nm in diameter on a transparent substrate. The probe sphere is illuminated by evanescent wave which is formed by the incidence of He-Ne laser with the wave length of 632.8 nm from the inside of the substrate on the condition of total reflection. The light from the probe is collected by a conventional microscope through the substrate. The detected light intensity changes remarkably when a sample is brought in a near-field around the probe. The variation of detected light intensity in the near-field depends on refractive index of sample; the smaller real part of refractive index of sample, the more remarkable increase of detected light intensity. This result is explained by using an electric dipole model for the electromagnetic interaction between probe and sample. The vertical resolution of about 1 nm and lateral resolution of less than 20 nm are obtained for the developed microscope by measuring a standard specimen which is prepared by vacuum evaporation of metal.
著者
大野 康 今井 基勝
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.61, no.3, pp.359-362, 1995-03-05 (Released:2009-07-23)
参考文献数
4
被引用文献数
1

直動システムのアブソリュートエソコーダとして現在開発中のバックアップ不要で自己診断機能付きのアブソリュートスケールを中心に述べた.従来のバックアップスケールに対し外部電池が不要という利点,絶対位置データの比較確認が可能であるほかに,瞬間の速度超過で位置を見失った場合も速度が下がり次第,正確な絶対位置を求めることも可能である.今後の課題は高精度な内挿技術により,M系列パターンとインクリメンタルパターン各1本だけで構成し,安価なアブソリュートスケールを開発することである.
著者
米田 圭吾 金子 俊一 渋谷 久恵 前田 俊二 仁戸部 勤 飯塚 正美 中山 透
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.80, no.12, pp.1182-1188, 2014-12-05 (Released:2014-12-05)
参考文献数
11
被引用文献数
1

Bullet identification is the difficult work that only specialists can do. It requires a high level of skill and takes a long time. So we are trying to assist appraising workers by using an image processing technology. In this paper, we propose a method to express the similarity between two bullets numerically and to estimate whether two bullets were fired by the same firefream.
著者
美濃島 薫
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.82, no.12, pp.1027-1031, 2016-12-05 (Released:2016-12-05)
参考文献数
29
被引用文献数
1
著者
小林 良生
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.56, no.4, pp.634-638, 1990-04-05 (Released:2010-02-16)
参考文献数
25
被引用文献数
1 1
著者
相澤 知禎 星野 晃一 榊原 恵
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.86, no.12, pp.982-988, 2020-12-05 (Released:2020-12-05)
参考文献数
12

This paper proposes a novel method for on-site software customization to improve performance of facial image sensing. Facial image sensors have been increasingly useful in various fields such as the driver monitoring system in the automobile and the elderly person monitoring system in the lifestyle support service. However, it is difficult to perform facial image sensing with high accuracy in cases that a user has large scars on the face, or defects/deformations of the facial parts such as eyes, nose, and mouth. So, for example, the driver monitoring system doesn’t help very much in safe-driving. In such cases, it is necessary to customize the software for the facial image sensing on-site like a dealer shop. According to this presented proposal, only setting some simple parameters is needed, on the other hand, no relearning process on facial feature values is needed. So, it brings high performance of his/her facial image sensing as well as general. Also, it is shown how to collect the intended user’s facial images for the software customization and its accuracy validation by using the portable and user-friendly equipment. It is confirmed that the proposed method is effective by the experiments using actual facial images.
著者
相山 康道
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.74, no.10, pp.1042-1045, 2008-10-05 (Released:2010-10-15)
参考文献数
5
著者
菅沼 克昭
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.79, no.8, pp.730-734, 2013-08-05 (Released:2014-01-05)
参考文献数
5
被引用文献数
1 1
著者
山田 真人 鈴木 譽久 山口 光隆 新井 健生
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.74, no.1, pp.102-106, 2008-01-05 (Released:2010-07-21)
参考文献数
10

Laser beam scanning technology has been used in various machinery such as laser beam printers, laser processing machines. Recently, the usage such as distance sensors for automobiles, area sensors for robots has expanded further. According to it, the miniaturization of beam scanning equipment, advanced features, and low-pricing have also come to be called for strongly. We suggest a method of two-dimensional beam scanning by driving a lens with an electromagnetic actuator. We use suspension wires to hold the scan lens. As a result, two-dimensional beam scanning is possible by simple structure. This paper describes the structure of the scanner module system and characteristics of the prototype model.