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1. 发明专利

JP2564313B2 失效
公开(公告)号：JP2564313B2
公开(公告)日：1996-12-18
申请号：JP18111287
申请日：1987-07-22
申请人： HITACHI LTD
发明人： UEDA TAKESHI , UMETANI KEIJI , SUZUKI RYUICHI , YOKOCHI HISATAKE , SUZUKI YOSHIO , USAMI KATSUHISA
IPC分类号： G01N23/04 , A61B6/02 , G03B35/08 , G03B42/02 , H04N13/02

2. 发明专利

JPH0730793A IMAGE PHOTOGRAPHING DEVICE 失效
公开(公告)号：JPH0730793A
公开(公告)日：1995-01-31
申请号：JP17286093
申请日：1993-07-13
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： UMETANI KEIJI , KATAKURA KAGEYOSHI , UEDA TAKESHI , YOKOUCHI HISATAKE
IPC分类号： G02B23/26 , H04N5/225
摘要： PURPOSE:To provide an image photographing device equipped with resolution exceeding the limitation of the principal resolution of an optical system only with an optical lens by the optical system using the optical lens and a fiber optical element. CONSTITUTION:The image of a visible beam 91 is formed on an image forming face of a fiber optical element 10 by an optical lens 90. The fiber optical element 10 is composed of tapered fiber bundle, and the dimension of the fiber optical element face in contact with the image detecting face of an image detector 70 is reduced rather than the dimension of the image forming face 11. The image formed on the image forming face 11 is reduced and detected by the image detector 70. Thus, the high-speed photographing of the high-resolution image is enabled.

3. 发明专利

JPH01190337A X-RAY ENERGY DIFFERENCE IMAGING APPARATUS 失效
公开(公告)号：JPH01190337A
公开(公告)日：1989-07-31
申请号：JP1064888
申请日：1988-01-22
申请人： HITACHI LTD
发明人： UMETANI KEIJI , UEDA TAKESHI , SUZUKI YOSHIO
IPC分类号： G01N23/04 , A61B6/00 , G03B42/02
摘要： PURPOSE:To obtain two images by monochromatic X-rays different in energy within a short time without moving an object, by providing a function as an X-ray shutter to two crystal type spectroscopes by changing the relation between the angles of X-ray diffraction of two crystal type spectroscopes. CONSTITUTION:Two crystal type spectroscopes are used to set spectral diffraction crystals 21, 22 by crystal fine adjustment mechanisms 23, 24 so that the crystal lattice surfaces of said crystals satisfy a Bragg condition not only between continuous X-rays 26 and monochromatic X-rays 27 but also between monochromatic X-rays 27 and monochromatic X-rays by objective monochromatic X-ray energy and an object 13 is irradiated with monochromatic X-rays of about iodine absorption terminal energy and, in the same way, said lattice surfaces are set so as not to satisfy the above mentioned Bragg condition and the irradiation of the object with monochromatic X-rays is prevented and a function as an X-ray shutter is provided to two crystal type spectroscopes. Then, corresponding to the difference between the energies of monochromatic X-rays incident to X-rays II14, the position of a plane mirror is changed over between plane mirrors 4-1, 4-2 by a drive mechanism 12 and two images by monochromatic X-rays are brought to an accumulation state on the photoelectric surface of a imaging tube as charge distribution.

4. 发明专利

JPS63128243A PHOTOGRAPHING DEVICE FOR ENLARGED AND REDUCED IMAGES BY MONOCHROMATIC X RAYS 失效
公开(公告)号：JPS63128243A
公开(公告)日：1988-05-31
申请号：JP27402386
申请日：1986-11-19
申请人： HITACHI LTD
发明人： UEDA TAKESHI , UMETANI KEIJI , SUZUKI RYUICHI , YOKOUCHI HISATAKE
IPC分类号： G01N23/04 , A61B6/02 , G03B42/02 , H01J35/00
摘要： PURPOSE:To select one of high resolution of a large visual field,and also, to prevent a scattered line generated in the inside of a body to be inspected, from being made incident on a detector, by a enlarging monochromatic X rays which have transmitted through the body to be inspected, in a vertical direction a horizontal direction by two pieces of asymmetrical reflecting crystals. CONSTITUTION:Monochromatic X rays being parallel beams which have transmitted through a body to be inspected are made incident on an asymmetrical reflecting crystal 2, and become a one-dimensionally enlarged beam 3. This beam 3 is made incident on another asymmetrical reflecting crystal 4 placed in an appropriate position, and a two-dimensionally enlarged beam 5 is obtained. Also, by allowing the two- dimensionally enlarged beam 5 to pass through the crystals 4, 2 in the direction reverse to the foregoing, a two-dimensionally reduced beam 1 can be obtained, and one of the high resolution or the large visual field can be selected. Also, every and the direction of a scattered line generated in the inside of the body to be inspected are reflected by the crystals 2, 4 in a widely diffused state, therefore, there is scarcely probability that said line is superposed on a transmission beam, and it can be prevented that the scattered line is made incident on a two-dimensional X-ray detector.

5. 发明专利

JPS61193645A RADIATION IMAGE PICK-UP APPARATUS 失效
公开(公告)号：JPS61193645A
公开(公告)日：1986-08-28
申请号：JP3263885
申请日：1985-02-22
申请人： HITACHI LTD
发明人： UMETANI KEIJI , KANO TAKESHI , YOKOUCHI HISATAKE , TAKAHASHI TETSUHIKO , OKAJIMA KENICHI , SUZUKI RYUICHI
IPC分类号： G01T1/00 , A61B6/00 , G03B42/02 , H04N1/04

6. 发明专利

JPH0980319A ENDOSCOPE DEVICE 失效
公开(公告)号：JPH0980319A
公开(公告)日：1997-03-28
申请号：JP23800295
申请日：1995-09-18
申请人： HITACHI LTD
发明人： SAMEJIMA KENJI , TAKEDA YASUTSUGU , TSUJI KAZUTAKA , UMETANI KEIJI , KAJIYAMA TOMOHARU
IPC分类号： G02B23/24 , A61B1/04
摘要： PROBLEM TO BE SOLVED: To obtain an endoscope device whose obtained image sensitivity and resolution, and S/N are high even when a scope diameter is made small by providing an image pickup device which utilizes electron multiplying operation in a semiconductor. SOLUTION: An image pickup tube 100 which performs electric charge multiplying operation in the semiconductor is provided at the terminal part of the image guide 105 of the optical endoscope. An optical image projected from the external end surface of this image guide fiber 105 is formed on the photoconductive target of the image pickup tube 100 which performs the electric charge multiplying operation in the semiconductor through an optical lens 108. The electron beam of the image pickup tube 100 is deflected and converged with a voltage supplied from an electron beam scanning circuit 109 to the electrode and coil 110 in the tube to scan a photoconductive target, and then a specific target voltage is applied from a target electrode 111 to a transparent electrode provided on the light incidence side of the photoconductive target. Consequently, even when the scope diameter is small and the quantity of illumination light is small, the subject image can be observed with sufficient sensitivity.

7. 发明专利

JPH01161229A X-RAY STEREOSCOPIC PHOTOGRAPHING DEVICE 失效
公开(公告)号：JPH01161229A
公开(公告)日：1989-06-23
申请号：JP31881087
申请日：1987-12-18
申请人： HITACHI LTD
发明人： UEDA TAKESHI , UMETANI KEIJI
IPC分类号： A61B6/02 , G03B35/02 , G03B42/02
摘要： PURPOSE:To attain simple stereoscopic photographing by measuring a 1st image with the rotating location of a rotary sample stand positioned counterclockwise when an observer can overlook an object, measuring a 2nd image with said location positioned clockwise, and observing the 1st image with his left eye and the 2nd image with his right eye. CONSTITUTION:The title device is constituted such that when the rotary sample stand is positioned counterclockwise, an image is observed with an observer's left eye, and when said stand is positioned clockwise. Then an image is observed with his right eye, points P and Q are visually recognized as an intersection P0, Q0 between a straight line connecting the left eye 26 of the observer 25 and display points p1' and q1' and a straight line connecting his right eye 27 and display points p2' and q2'. Thus, points nearer the center of rotation, which are viewed from an X-ray detector, are visually recognized before a display device, whereas points farther from the center are visually recognized after the display device; therefore they can be recognized three-dimensionally.

8. 发明专利

JPH01147446A ENERGY DIFFERENTIAL IMAGE PHOTOGRAPHING SYSTEM 失效
公开(公告)号：JPH01147446A
公开(公告)日：1989-06-09
申请号：JP30562587
申请日：1987-12-04
申请人： HITACHI LTD
发明人： UEDA TAKESHI , UMETANI KEIJI
IPC分类号： A61B6/00 , G01N23/04 , G03B42/02 , G06T1/00 , H04N5/32 , H04N5/325 , H04N7/18
摘要： PURPOSE:To prevent a false image caused by positioning error from being generated by using a material which includes an interesting element to be selectively extracted as a filter for X-rays of photon energy larger than the absorption edge of the interesting element and attaining an energy differential image. CONSTITUTION:The X-rays possessing a certain band width which includes both top and bottom absorption edges are emitted, and a first photographing is conducted under the condition that the interesting element filter 4 is removed from the X-ray beam optical path and data I1 is obtained. Then the filter 4 is positioned at the X-ray beam optical path within a short time and data I2 is obtained. The body to be detected 11 is removed, and a third photographing is conducted under the condition that the filter 4 is removed and data I3 is obtained. Then the filter 4 is arranged within a short time in order to get data I4, and the energy differential image is obtained by using these measurement values I1-I4. Thus, the energy of the X-ray photon is switched without revolving a crystal spectrograph and the false image generation caused by the positioning error is prevented.

9. 发明专利

JPH01147445A X-RAY ENERGY DIFFERENTIAL IMAGE PHOTOGRAPHING DEVICE 失效
公开(公告)号：JPH01147445A
公开(公告)日：1989-06-09
申请号：JP30562387
申请日：1987-12-04
申请人： HITACHI LTD
发明人： UMETANI KEIJI , UEDA TAKESHI
IPC分类号： A61B6/00 , G01N23/04 , G03B42/02 , G06T1/00 , H04N5/32
摘要： PURPOSE:To take enough time for image accumulation by performing the image accumulation and image reading alternately at every scanning frame of a TV camera and fixing X-ray energy during the period of an image accumulating frame. CONSTITUTION:In case of photographing the output image of an X-ray image intensifier 7 by the TV camera 12, a frame for accumulating an image in a TV camera image picked up surface and a frame for reading an image signal from the TV camera are separated. In the image accumulating frame, an optical shutter 9 is opened and the X-ray energy is fixed. In a reading frame, the optical shutter is kept closed, and only in this frame, the change of the X-ray energy is performed. Thus enough time can be spent for the image accumulation without taking special consideration into the electron beam scanning period of the TV camera.

10. 发明专利

JPS62251738A RADIOGRAPHIC IMAGE INFORMATION RECORDER 失效
公开(公告)号：JPS62251738A
公开(公告)日：1987-11-02
申请号：JP9444886
申请日：1986-04-25
申请人： HITACHI LTD
发明人： OKAJIMA KENICHI , TAKAHASHI TETSUHIKO , UMETANI KEIJI , YOKOUCHI HISATAKE
IPC分类号： G01T1/00 , G03B42/02 , H04N1/04
摘要： PURPOSE:To eliminate the mechanical damage of a catapillar type accumulative fluorescent material and to obtain uniform and high definition radiographic image and, at the same time, tomonitor the dynamic movement of an object to be checked, by providing a two-dimensional optical sensor below the material. CONSTITUTION:The catapillar type material 1 for X-ray detection made of an accumulative fluorescent material is provided. Rollers 2 to be used for moving the material 1 are stopped when the movement of an object 3 to be checked is measured. When X rays irradiates upon the object from an X-ray tube 4, the material 1 for X-ray detection corresponding to the F section of the object 3 generates instantaneous light, in which the internal structure of the object 3 is reflected. When the instantaneous light is measured with a two-dimensional sensor 5 which is high in time resolution, the movement of the object 3 can be measured. When a high definition image is desired, the material 1 is moved by means of the rollers 2 after intercepting the X rays from the X-ray tube 4 so as to bring a new surface of the material 1 below the object 3. Then the rollers 2 are stopped and the new surface is irradiated by X rays. By repeating these operations, plural sheets of high definition X-ray latent images are obtained.

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