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Displaying 1-14 of 14 articles from this issue
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Article type: Cover
Pages Cover1-
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (50K) -
Masafumi KimataArticle type: Article
Session ID: IPU2001-7
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThis paper describes recent trends of cooled and uncooled infrared focal plane arrays(FPAs), including Si-based photoemissive FPAs, narroe gap compound semiconductor FPAs, quantum well infrared photodetector FPAs, ferroelectric FPAs, and microbolometer FPAs. As a new infrared FPA, an uncooled infrared FPA with an SOI diode temperature sensor is also introduced. While cooled FPAs based on photon detectors has made a remarkable progress in sensitivity and spatial resolution, uncooled FPAs are opening up a variety of low-end applications.View full abstractDownload PDF (864K) -
Junji Suzuki, Tohru Ishizuya, Keiichi Akagawa, Tsuneyuki KazamaArticle type: Article
Session ID: IPU2001-8
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA 266×194 optically readable bi-material infrared detector which has 55×55 microns square pixels has been developed. Each pixel of this detector has the bi-material beams, the thermal insulators, the mirror plate and the IR absorber. The bi-material beam consists of two films. When the IR absorber absorbs IR radiation, the bi-material beam raises its temperature and deflects in the cause of difference in the thermal expansion coefficient of two films. This deflection varies the angle of the mirror plate. The angle of the mirror plate is read out optically. In this paper, we evaluated this test device. We succeeded in imaging the thermal image of man's face with this detector.View full abstractDownload PDF (743K) -
Taeko I. URANO, Naru IKEDA, Yoshimi YAMAJI, Kenji SANOArticle type: Article
Session ID: IPU2001-9
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESS"Unicolor Barcode" is developed as a hidden wovem barcode pattern durable to washing. Infrared light is used for barcode reading instead of visible light. Polymers whose infrared absorption is located apart from those of usual fabrics are made into threads and are woven to barcode patterns. Two barcode readers(handy reader and camera system)and their application are shown.View full abstractDownload PDF (1106K) -
Masaki Hirota, Yasushi Nakajima, Masanori Saito, Fuminori Satou, Makot ...Article type: Article
Session ID: IPU2001-10
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA 48×32 element thermoelectric infrared sensor array with responsivity of R=2100V/W has developed. The sensor array with both high responsivity and low cost potential has fabricated with integration of the CMOS IC process, precisely pattermed Au-black infrared absorber and micromachineing technology. A blind spot pedestrian warning system utilized the sensor array has also achieved in Nissan ASV-2. This system alert the driver to the presence of a pedestrian in the blind spot as the driver by detecting infrared radiation emitted from human body, and also prevents the vehicle from miving in the direction of the pedestrianView full abstractDownload PDF (1125K) -
M. Niraula, A. Nakamura, T. Aoki, Y. HatanakaArticle type: Article
Session ID: IPU2001-11
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe report on the fabrication and performance of high energy-resolution CdTe nuclear radiation detectors for their applications in gamma-ray spectroscopy and imaging. The detectors were fabricated in a novel technique, where an iodine-doped n-type epitaxial layer is grown on the Te-face of the(111)oriented high-resistivity p-like CdTe crystal wafer at a low substrate temperature, followed by the aluminum metallization that acts as an anode. The cathode consists of an evaporated gold electrode on the opposite side for the detectors used on gamma-ray spectroscopy. On the other hand, detectors used for the imaging applications have strip cathodes. The strip cathode consists of p-type segmented regions formed on the crystal by the diffusion of dopant atoms from an alkaline metal compound through a patterned shadow mask using the excimer laser radiation. Afterward, gold electrode is evaporated through the same shadow mask so that to make the strip cathodes. Details of these fabrication processes and the performance of both types of detectors will be presented.View full abstractDownload PDF (559K) -
Tatsuya Matsumura, Katsuyuki KinoshitaArticle type: Article
Session ID: IPU2001-12
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe X-ray electron microscope is an X-ray detector with very high spatial resolution, which using an X-ray zooming tube. The system consists of the X-ray zooming tube, the electromagnetic coil assembly, the drive circuit, the optical relay lens, the CCD camera and the video signal processor. Soft X-ray or X-ray image can be magnified up to 200 times and reproduced with an extremely high resolution of 0.5μm, allowing images to be read in real time. Two type of X-ray zooming tube exist. In the standard type X-ray zooming tube, magnification factor of the tube is largely changeable 10 to 200. In the large area type X-ray zooming tube, observable area on the photocathode is large(20mm dia.)at low magnification factor of 1.2. They can select two type of input windows. One window is a vacuum frange and soft X-ray photocathode on thin organic film. The other window is Be window for hard X-ray. In this paper, the details of the system configuration, the system performances and the experimental results are described.View full abstractDownload PDF (1108K) -
Michitaka HondaArticle type: Article
Session ID: IPU2001-13
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSX-ray flat panel detectors have been earnestly developed from the middle 1990s. A typical hardware of such flat panel detectors contains an x-ray detection material deposited on a 2-dimensional TFT matrix, which transfers the detetcted charge to a charge amplifier. Two modes of the x-ray detection have been successfully developed; direct and indirect conversion. The direct type directly detects electric charge energized by the x-ray, while the indirect type detects optical photons converted with an x-ray phosphor. The improvement of the basic resolution for diagnostic imaging system, as well as the mechanical advantages, has been confirmed in both types and introduced by a lot of papers and meetings. Now, the flat panel detectors are really expected to bring a large impact into the variety of the clinical applications.View full abstractDownload PDF (819K) -
K. Kitamura, K. Ishida, T. Morimoto, S. Masuda, Y. Okumura, S. Miyatak ...Article type: Article
Session ID: IPU2001-14
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSMultilayer photodiodes with the a-SiC/a-Si/a-Sin structure showed the photocurrent multiplication characteristic reaching 6.6. The multiplication phenomenon in this device occurs only under the condition when the depletion layer spreads to the c-Si substrate and the device is illuminated by a wavelength longer than 550nm. The results of the optoelectrical properties of this device indicate that this multiplication phenomenon cannot be explained by the Avalanche phenomenon. The multiplication is explained by the process when the generated carriers in the c-Si substrate are accumulated at the a-SiN/c-Si interface and cause tunneling via localized atates in SiN by induced high electric field. This model provides a reasonable explanation of the results observed in this device.View full abstractDownload PDF (587K) -
Hirohisa KUROSAKI, Takao SUZUKI, Yoshiyasu TAKEFUJI, Kenkichi TANIOKA, ...Article type: Article
Session ID: IPU2001-15
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have developed a UV and visible hyperspectral camera which has spectral resolution less than 1.5nm between the range of 320nm and 580nm. The main components of the camera are specially coated UV object lens, UV AOTF with thermo electric(TE)cooling system and HARP(High-gain Avalanche Rushing amorphous Photoconductor)imaging device. The camera demonstrated a high spectral resolution performance analyzing very close two spectrum from a He discharge lamp. We obtained several interesting spectral images showing the distinction between a male and a female cabbage butterfly. Configuration of the instrument, result of the evaluation tests, example of spectral images will be presented here.View full abstractDownload PDF (1004K) -
Takaaki Iwata, Souichi Oka, Yoshiyasu TakefujiArticle type: Article
Session ID: IPU2001-16
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe aim of this paper is to distinguish Material-Feelings by spectral image processing using Self-Organization Neural-Network. SOM assigns similar colors to pixels that have a similar feature(as brightness information)in RGB-maps. We use ultraviolet spectral images that were taken between 320nm and 400nm resolution. We prepared several samples including different degrees of silky-feeling for structural and chemical features. We obtained two results by these experiments. It is possible that we distinguish different degrees of silky-feeling by structural features. And, Ultraviolet Spectral Camera cannot brightness information to distinguish different degrees of silky-feeling by the chemical features.View full abstractDownload PDF (688K) -
Article type: Appendix
Pages App1-
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (86K) -
Article type: Cover
Pages Cover2-
Published: February 23, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (76K)
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