著者
鈴木 成一郎
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.64, no.5, pp.679-683, 1998-05-05 (Released:2009-06-30)
参考文献数
16
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
青柳 誠司 藤岡 潤 石井 一久 関 啓明 神谷 好承
出版者
公益社団法人精密工学会
雑誌
精密工学会誌 = Journal of the Japan Society of Precision Engineering (ISSN:09120289)
巻号頁・発行日
vol.65, no.7, pp.1035-1040, 1999-07
参考文献数
12
被引用文献数
1

Aiming at realizing off-line programming, many researches of improving robot's accuracy by calibrating the kinematic parameters of a robot are being carried out now. For an effective calibration it is necessary to measure the position of the tip of a robot arm precisely in a comparatively wide area. Although a laser tracking system is regarded as the most practical measuring system for this purpose in ISO 9283, there is no report yet which actually applies this system to the robot calibration. In this paper a 6-DOF articulated robot is calibrated by using a laser tracking system according to the joint axis estimating method and the effectiveness of this system is certified. A method of estimating the accuracy which refers to the robot base coordinate system is proposed. It is proved experimentally that the accuracy of the robot before calibration is worse than 3mm. The robot after calibration is positioned to the limited grid which is in the area near the initial pose of the calibration and to the wide grid. The accuracy in the limited grid is improved to be 0.27mm by the calibration, however the accuracy in the wide grid is worse compared with that in the limited grid. From this result it is proved that the joint axis estimating method is not so effective except for the neighborhood of the initial pose.
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