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公开(公告)号：DE69802942D1
公开(公告)日：2002-01-24
申请号：DE69802942
申请日：1998-07-30
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO , SUZUKI MAKOTO
Abstract: As shown in Fig. 1, an optical device 10 comprises an input optical member 11, in which a plurality of optical fibers 14 are arranged parallel to each other and integrally formed, having an entrance surface 11a and an exit surface 11b which form an angle of 31 DEG and a right angle, respectively, with the optical axis; and an output optical member 12, in which a plurality of optical fibers are similarly arranged parallel to each other and integrally formed, having an entrance surface 12a and an exit surface 12b which form an angle of 31 DEG and a right angle, respectively, with the optical axis; wherein the exit surface 11b of the input optical member 11 and the entrance surface 12a of the output optical member 12 are fixed in contact with each other. Here, while the exit surface 11b of the input optical member 11 is ground to yield an optically specular surface, the whole entrance surface 12a of the output optical member 12 is roughly ground to yield a rough surface having a center-line average roughness of 0.49 mu m.
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公开(公告)号：DE69616174D1
公开(公告)日：2001-11-29
申请号：DE69616174
申请日：1996-07-03
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: A fiber optic plate formed by a plurality of optical fibers which are united together while being bundled together, said fiber optic plate comprising: a plurality of cores made of a core glass, said cores propagating incident light; a clad covering respective peripheries of said cores, said clad being made of a clad glass whose refractive index is lower than the refractive index of said core glass; and an absorber disposed between said plurality of cores, said absorber being made of a predetermined glass and absorbing stray light which has leaked from said core and entered said clad.
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公开(公告)号：AU8460498A
公开(公告)日：1999-02-22
申请号：AU8460498
申请日：1998-07-30
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO , SUZUKI MAKOTO , KATO MASAYOSHI
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公开(公告)号：DE69734800T2
公开(公告)日：2006-10-26
申请号：DE69734800
申请日：1997-07-24
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: The fiber optic device (10) in accordance with the present invention comprises cores (32) extending in a predetermined direction and a light absorber (34) surrounding the cores (32). Opposite end faces of the cores and light absorber (32, 34) are respectively collected to become flush with each other to form input and output end faces (22, 24) of the device (10). The input end face (22) is inclined with respect to an axis (38) of each of the cores (32) at a predetermined angle. In this device, an irregularity pattern of a surface of an object in close contact with the input end face (22) can be transmitted through the device (10) and emitted from the output end face (24) with a high contrast.
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公开(公告)号：DE69733535T2
公开(公告)日：2006-05-11
申请号：DE69733535
申请日：1997-12-04
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: The fiberoptic block in accordance with the present invention has an input end face constituted by a combination of a plurality of surfaces each of which is inclined at a slant angle alpha by which disturbing light from within the air can be eliminated, whereby an irregularity image with a high contrast can be emitted as usual. Also, it has an output end face perpendicular to the axis of each unit fiber. Accordingly, when the output end face is butted against and secured to an input face of a photodetector, the irregularity image is made incident on the input face of the photodetector so as to be substantially perpendicular thereto, thus allowing a bright irregularity image to be attained. Further, since this fiberoptic block has a form extending from the output end face in a direction perpendicular thereto, it can be attached to the photodetector relatively easily with a high precision.
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Patent Agency Ranking
公开(公告)号：DE69734800D1
公开(公告)日：2006-01-12
申请号：DE69734800
申请日：1997-07-24
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: The fiber optic device (10) in accordance with the present invention comprises cores (32) extending in a predetermined direction and a light absorber (34) surrounding the cores (32). Opposite end faces of the cores and light absorber (32, 34) are respectively collected to become flush with each other to form input and output end faces (22, 24) of the device (10). The input end face (22) is inclined with respect to an axis (38) of each of the cores (32) at a predetermined angle. In this device, an irregularity pattern of a surface of an object in close contact with the input end face (22) can be transmitted through the device (10) and emitted from the output end face (24) with a high contrast.
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公开(公告)号：DE69921644T2
公开(公告)日：2005-12-01
申请号：DE69921644
申请日：1999-03-24
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: An optical component 10 has a plurality of optical fibers comprising a first core 12, a second core 14 formed around the first core 12, and a clad 16 formed around the second core 14, arrayed regularly so that the fiber axes may be parallel to each other, having an incident plane 10a cut obliquely to the fiber axis and an exit plane 10b cut vertically to the fiber axis. The refractive index n2 of the second core 14 is smaller than the refractive index n1 of the first core 12, and the refractive index nc, of the clad 16 is smaller than the refractive index n2 of the second core 14, and further the refractive index n1 of the first core 12, the refractive index n2 of the second core 14, and the refractive index nc of the clad 16 satisfy the relation of n1 - n2 = n2 - nc .
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公开(公告)号：DE69733535D1
公开(公告)日：2005-07-21
申请号：DE69733535
申请日：1997-12-04
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: The fiberoptic block in accordance with the present invention has an input end face constituted by a combination of a plurality of surfaces each of which is inclined at a slant angle alpha by which disturbing light from within the air can be eliminated, whereby an irregularity image with a high contrast can be emitted as usual. Also, it has an output end face perpendicular to the axis of each unit fiber. Accordingly, when the output end face is butted against and secured to an input face of a photodetector, the irregularity image is made incident on the input face of the photodetector so as to be substantially perpendicular thereto, thus allowing a bright irregularity image to be attained. Further, since this fiberoptic block has a form extending from the output end face in a direction perpendicular thereto, it can be attached to the photodetector relatively easily with a high precision.
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公开(公告)号：DE69924247D1
公开(公告)日：2005-04-21
申请号：DE69924247
申请日：1999-03-23
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO
Abstract: An optical component 10, formed with a plurality of optical fibers arranged parallel with each other, has an incident surface 10a obliquely cut with respect to the fiber axis, and an output surface 10b perpendicularly cut with respect to the fiber axis. The core 12 of each optical fiber with a square cross-sectional shape is divided equally into two areas 12a and 12b via a flat plate-like clad part 14 lying on the central axis of the core 12. Moreover, the optical fibers are arranged such that the dividing directions (t direction in FIG. 1B) of the divided cores 12 are irregular per each optical fiber. Furthermore, the periphery of each core 12 is covered with a clad 16.
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公开(公告)号：AU2003212007A1
公开(公告)日：2003-09-04
申请号：AU2003212007
申请日：2003-02-14
Applicant: HAMAMATSU PHOTONICS KK
Inventor： SUGAWARA TAKEO , NATSUME YOSHIO
IPC: A61B5/117 , G01B11/24 , G02B6/08 , G02B6/26 , G02B6/42 , G06K7/10 , G06K9/00 , G02B6/04 , H04N1/19 , G06T1/00
Abstract: A fiber optical plate (1), comprising detection areas (12) where light absorbers are disposed around optical paths and illumination areas (14) where the light adsorber is not installed between the adjacent optical paths, wherein an irregular pattern output surface (124) and an imaging element (4) and an illumination light incident surface (142) and a LED array (5) are joined to each other with a transparent adhesive agent, whereby the axis of the optical paths and an irregular pattern input surface (122) are tilted at a slant angle set so that light incident from the air is not totally reflected on a core/clad boundary surface.
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