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公开(公告)号：JPH01105206A
公开(公告)日：1989-04-21
申请号：JP26245387
申请日：1987-10-17
Applicant: SUMITA OPTICAL GLASS
Inventor： TAGAWA MASAFUMI , OKAWA EIJI , MARUYAMA FUMIO
Abstract: PURPOSE:To obtain a normal distribution illumination whose incident light quantity loss is small by providing an uneven part having surface roughness of a prescribed range on the incident end of an optical fiber or an optical fiber bundle. CONSTITUTION:A very small uneven part which has been formed by an abrasive corresponding to #800-#2000 prescribed by JIS R 6001, or that which is equal thereto is provided on the incident end face of a multi-mode optical fiber whose light receiving angle is large, or an optical fiber bundle which had bundled these optical fibers. Accordingly, a light beam from a light source 5, which is made incident on the incident end of the optical fiber or the optical fiber bundle 8 comes into collision with an uneven part of the end face and the incident angle is diversified. In such a way, a mode which is propagated in the optical fiber is equalized extending from '0'-order to the maximum higher mode, and the emitted light becomes illuminating light whose intensity distribution is similar to a normal distribution.
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公开(公告)号：JP2012238107A
公开(公告)日：2012-12-06
申请号：JP2011105451
申请日：2011-05-10
Applicant: Sumita Optical Glass Inc , 株式会社住田光学ガラス
Inventor： WATABE HIROMI , MARUYAMA FUMIO , TAGAWA MASAFUMI
Abstract: PROBLEM TO BE SOLVED: To provide a fingerprint collecting device and a fingerprint collecting method which collect fingerprint images in a wide range with high accuracy.SOLUTION: A fingerprint collecting device has an imaging sensor unit 111; a reference optical system 112; first to third optical systems 113a-113c; an outline detecting portion; an extracting portion; and an image uniting portion. The imaging sensor unit 111 picks up an optical image formed on a light-receiving surface. The reference optical system 112 images a reference optical image of fingers in a reference area on the light-receiving surface. The first to third optical systems 113a-113c image first to third optical images in first to third areas. The outline detecting portion detects a plane surface outline. The extracting portion extracts a reference picked up image and a part image which is an image of a part of the first picked up image, on the basis of the plane surface outline. The image uniting portion unites the reference picked up image and the part image extracted from the first picked up image to form the whole image.
Abstract translation: 要解决的问题：提供以高精度收集宽范围的指纹图像的指纹采集装置和指纹采集方法。 解决方案：指纹采集装置具有成像传感器单元111; 参考光学系统112; 第一至第三光学系统113a-113c; 轮廓检测部分; 提取部分; 和图像组合部分。 成像传感器单元111拾取形成在光接收表面上的光学图像。 参考光学系统112在光接收表面上的参考区域中对手指的参考光学图像进行成像。 第一至第三光学系统113a-113c在第一至第三区域中成像第一至第三光学图像。 轮廓检测部检测平面轮廓。 提取部分基于平面表面轮廓提取参考拍摄图像和作为第一拾取图像的一部分的图像的部位图像。 图像合并部分将从第一拾取图像提取的参考拾取图像和部分图像相结合以形成整个图像。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2002288644A
公开(公告)日：2002-10-04
申请号：JP2001087602
申请日：2001-03-26
Applicant: SUMITA OPTICAL GLASS
Inventor： TAGAWA MASAFUMI
Abstract: PROBLEM TO BE SOLVED: To provide a linear lighting system capable of providing linear illuminating light of uniform distribution of illuminance, and providing the linear illuminating light of high intensity and high light-converging efficiency by a cylindrical lens, with respect to the linear lighting system provided with a light guide. SOLUTION: Either a reflection space, having a reflecting plane formed outside an outgoing end face, and the outgoing beam is reflected in the reflection space, and emitted from an outgoing end of the reflection space to obtain the linear illuminating light of the uniform distribution of the intensity, or further an inclined reflection space having an inclined reflecting face, is formed, the outgoing beam is reflected in the inclined reflection space, and an outgoing angle of the outgoing light is corrected, by emitting the light from an inclined reflection space outgoing end to obtain the linear illuminating light of high intensity.
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公开(公告)号：JPH01173002A
公开(公告)日：1989-07-07
申请号：JP33378787
申请日：1987-12-28
Applicant: SUMITA OPTICAL GLASS
Inventor： TAGAWA MASAFUMI , SAWANOBORI SHIGETO , YAMAUCHI JUNYA , MARUYAMA FUMIO
Abstract: PURPOSE:To easily form a transmission type diffraction grating by placing alternately a transparent glass phase and an opaque crystal phase of a linear shape of a prescribed dimension in the inside of a photosensitive glass substrate. CONSTITUTION:A diffraction grating is manufactured by polishing the glass containing a photosensitive metal and in accordance with printing and developing processes of photosensitive glass, which are executed usually. That is, a mask pattern of prescribed line width and pitch interval consisting of a chrome vapor-deposited film is allowed to adhere closely to a photosensitive glass plate and ultraviolet rays are radiated by parallel rays using a high voltage mercury lamp. Thereafter, it is made parallel by polishing the deformation on the surface of glass, which has been generated by a heat treatment. As a result, a diffraction grating in which an opaque part 1 and a transparent part 2 which have been manufactured and crystallized in such a way are arrayed periodically is formed. Accordingly, the process which necessitates precision working scarcely exists, and said diffraction grating has an excellent productivity.
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