公开(公告)号：JPH02119039A

公开(公告)日：1990-05-07

申请号：JP27273788

申请日：1988-10-28

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HASHIMOTO SEIICHIRO ,  OI YOSHIHARU

IPC: H01J31/50 ,  H01J40/06 ,  H01J43/04

Abstract: PURPOSE:To improve detection sensitivity to a specific wavelength by providing a transparent membrane on a light-receiving plane of a transparent light- receiving plate, with a refraction factor n which is larger than that of the transparent light-receiving plate and thickness d and selecting an odd integer to a wavelength lambda to satisfy specific condition to the wavelength lambda. CONSTITUTION:A conductive transparent membrane 7 is attached and formed onto an outer surface (a light-receiving plane) of a transparent light-receiving plate 2 of a light-receiving tube. A leak current thus flows to the ground from such as a photoelectric conversion membrane 3. Therefore, the light receiving plane is not charged so that decrease of light-receiving sensitivity due to attachment of dust in air to the light receiving plane is avoided. Detection sensitivity to a specific wavelength lambda is improved by satisfying the condition n.d=(lambda/4).m, where (n) is a refraction factor of the membrane 7 which is larger than that of the light receiving plane, (d) thickness of the membrane 7 and m an odd integer to the wavelength lambda.

公开(公告)号：JPH02119038A

公开(公告)日：1990-05-07

申请号：JP27273688

申请日：1988-10-28

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HASHIMOTO SEIICHIRO ,  OI YOSHIHARU

IPC: H01J31/50 ,  H01J40/06 ,  H01J43/04

Abstract: PURPOSE:To improve detection sensitivity to a specific wavelength by providing a transparent membrane on a light-receiving plane of a transparent light- receiving plate, with a refraction factor n which is larger than that of the transparent light-receiving plate and thickness d and selecting an even integer m to a wavelength lambda to satisfy specific condition to the wavelength lambda. CONSTITUTION:A conductive transparent membrane 7 is attached and formed onto an outer surface (a light-receiving plane) of a transparent light-receiving plate 2 of a light-detection tube. A leak current thus flows to the ground from such as a photoelectric conversion membrane 3. Therefore, the light-receiving plane is not charged so that decrease of light-receiving sensitivity due to attachment of dust in air to the light-receiving plane is avoided. Detection sensitivity to a specific wavelength lambda is improved by satisfying the condition n.d=(lambda/4).m, where (n) is a refraction factor of the membrane 7 which is larger than that of the light-receiving plane, (d) thickness of the membrane 7 and m an even integer to the wavelength lambda.

公开(公告)号：JPS61168988A

公开(公告)日：1986-07-30

申请号：JP959385

申请日：1985-01-22

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HIRANO TATSU ,  HASHIMOTO SEIICHIRO

IPC: H01S3/20 ,  H01S3/02 ,  H01S3/213

Abstract: PURPOSE:To make it unnecessary to arrange an optical resonator at the time of exchanging a dye cell by a method wherein the cell itself of the dye cell is constituted so as to fulfill a function as an optical resonator. CONSTITUTION:Inner capacity of a dye cell 100 is prescribed by a quartz glass cylinder 111 and a quartz glass plate 112, 113 and the quartz glass plate 112, 113 is deposited to the quartz glass cylinder 111. Aluminium is evapolated to the face not facing to dye solution of the quartz glass plate 113 to be whole reflecting mirror 114 and since optical amplification factor of a dye laser by excitation of an excimer laser is large, the quartz glass plate 112 of output side is used as a transilluminating mirror as it is. The quartz glass plate 112, 113 is seated at about 1/60 deg. accuracy crossing cylinder axis of the quartz glass cylinder 111 at right angle, thus it is used as an optical resonator. An opening 115 is an opening of an exchanging dye and is sealed by a stopper 116.

公开(公告)号：JPS6025859B2

公开(公告)日：1985-06-20

申请号：JP11660878

申请日：1978-09-25

Applicant: HAMAMATSU PHOTONICS KK

Inventor： TAKEMURA MITSUTAKA ,  HARA KATSUO ,  TAKAHASHI HIDEO ,  HASHIMOTO SEIICHIRO

IPC: H01J1/30 ,  H01J1/308 ,  H01J1/32

公开(公告)号：JPH04212010A

公开(公告)日：1992-08-03

申请号：JP21313690

申请日：1990-08-10

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HAYASHI AKITAKE ,  MATSUMOTO OSAMU ,  HARA TSUTOMU ,  KOBAYASHI YUJI ,  FUJITA KATSUYOSHI ,  HASHIMOTO SEIICHIRO

IPC: G01C9/06 ,  G01C9/18

Abstract: PURPOSE:To obtain a displacement detector which is simply structured, compact and light-weighted to enable highly accurate displacement detection by providing a movable member rotatably provided around a rotation axis, a shift detecting means for detecting shift directions and a returning means for rotating a container in the shift direction. CONSTITUTION:A movable member 8 rotates together with fluid due to function from the fluid or its own inertia. At the time of operation of a displacement detector, if a member whose displacement is to be detected rotates and the member 8 has shifted from a reference position together with the fluid for example, shift detecting means 12a, 12b, 14a, 14b detect occurrence of the shift and directions of the shift. A returning means 2 immediately rotates a container 4 to follow a direction of the member 8 shift so that a relation between the container 4 and the member 8 is restored to an original state before the shift occurrence, that is, the reference position. Further a displacement detecting means detects a relative rotation amount of the container with respect to a displacement detecting member to detect displacement of the member whose displacement is to detected, that is, the displacement detector itself.

公开(公告)号：JPH04171653A

公开(公告)日：1992-06-18

申请号：JP30085690

申请日：1990-11-06

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HASHIMOTO SEIICHIRO ,  KAWAI KOJI

IPC: H01J61/09 ,  H01J61/52 ,  H01J61/68

Abstract: PURPOSE:To prevent cracks of a discharge tube by connecting electrodes with a connecting body thermally connecting them and having electric insulation in the discharge tube. CONSTITUTION:A high-heat generating electrode 27 and a low-heat generating electrode 23 are connected with a connecting body 42 thermally connecting them and having electric insulation. When it is difficult to connect the electrodes 27, 23 directly with the connecting body 42, the connecting body 42 is inserted for connection between electrode holding pins 31-38 connected to the electrodes 27, 23. The electrodes 27, 23 are thermally connected, and no local thermal stress is generated on button stems. The occurrence of cracks can be surely prevented.

公开(公告)号：JPH0498115A

公开(公告)日：1992-03-30

申请号：JP21634890

申请日：1990-08-16

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HAYASHI AKIRA ,  MATSUMOTO OSAMU ,  HARA TSUTOMU ,  KOBAYASHI YUJI ,  FUJITA KATSUYOSHI ,  HASHIMOTO SEIICHIRO

IPC: G01C9/06 ,  G01C9/18

Abstract: PURPOSE:To detect the displacement of a displacement-detecting device itself by constituting the device in such a way that when a movable member has been dislocated from its reference position, the displacement-detecting device detects the occurrence of this dislocation and the direction of this dislocation so that it can follow up the dislocation in the dislocated direction. CONSTITUTION:When a displacement-detecting device turns around an arbitrary axis being parallel to its axis 5, a vessel 4 does not turn with regard to an outer case 1, and a float 8 keeps its direction or position by its inertia. As a result, the float 8 turns relatively to the vessel 4 and the outer case 1. For instance, when the float 8 turns in the clockwise direction, the detecting light quantity of a photo-detector 14a increases, while that of a photo-detector 14b decreases. The outputs are monitored by a control circuit 16, and a servomotor 2 is turned on the basis of the differential output thereof. Thus, by driving the servomotor 2 to turn the vessel 4 in the direction the float 8 has been dislocated, the angular displacement can be detected.

公开(公告)号：JPH0222589A

公开(公告)日：1990-01-25

申请号：JP17224588

申请日：1988-07-11

Applicant: HAMAMATSU PHOTONICS KK

Inventor： OBA AKIRA ,  HASHIMOTO SEIICHIRO

IPC: G01T1/29 ,  G21K1/04 ,  H01J31/50

Abstract: PURPOSE:To obtain a sharp enlarged radiation image by providing a stop means which serves as a stop for radiation incident on a photoelectric converting means by the aperture adjustment of a stop window in front of the photoelectric converting means. CONSTITUTION:The stop means 20 is positioned in front of a photoelectric surface 11 where the enlarged radiation image of a sample 2 is formed. The stop means 20 has the stop window 21 where radiation passes. The aperture size of the window 21 is adjustable, so the aperture for the radiation incident on the photoelectric surface 11 is adjustable. Then radiation which is scattered in a radiation image enlargement part 5 and does not relate to the image formation is cut off by the aperture adjustment of the window 21, so only the radiation for the image formation is incident on the photoelectric surface 11. Photoelectrons emitted by the photoelectric surface 11 are therefore only electrons corresponding to the enlarged image of the sample 2, so the sharp optical image can be formed on a fluorescent surface 13. Further, the visual field of radiation on the photoelectric surface 11 is limited to a necessary range, so what is called the generation of scattered electrons is prevented.

公开(公告)号：JPS63305257A

公开(公告)日：1988-12-13

申请号：JP14206187

申请日：1987-06-05

Applicant: HAMAMATSU PHOTONICS KK

Inventor： AOSHIMA SHINICHIRO ,  TSUCHIYA YUTAKA ,  HASHIMOTO SEIICHIRO

IPC: G01R15/24 ,  G01R19/00 ,  G01R31/302

Abstract: PURPOSE:To obtain a desired detected result and to adjust an optical axis readily, by arranging a desired electrooptical material or a transparent material without an electrooptical effect at the tip part of an optical probe, so that the material can be replaced. CONSTITUTION:A rotary stage 2 is provided at the tip part of an optical probe 1. A plurality of screw holes 3-1, 3-2 and 3-3 are provided in the rotary stage 2. An electrooptical material 4-1 having an excellent temperature characteristic is coupled into the screw hole 3-1. An electrooptical material 4-1 having an excellent sensitivity characteristic is coupled into the screw hole 3-2. A transparent material 4-3 without an electrooptical effect is coupled into the screw hole 3-3. Before the voltage of a material to be measured 5 is measured, the rotary stage 2, which is provided at the tip part of the optical probe 1, is rotated. The transparent material 4-3 is positioned along the optical axis of the optical probe 1. A light beam is inputted, and the intensity of output light is judged. Thus the optical axis of the optical probe 1 is adjusted.

公开(公告)号：JPS62108445A

公开(公告)日：1987-05-19

申请号：JP24828185

申请日：1985-11-06

Applicant: HAMAMATSU PHOTONICS KK

Inventor： HASHIMOTO SEIICHIRO ,  TSUCHIYA KATSUYOSHI ,  TAKAGI SADAMITSU

IPC: H01J40/04 ,  H01J40/06

Abstract: PURPOSE:To uniform the sensitivity of a photoelectric tube in all directions, by providing photoelectron emission layers on the surfaces of a pair of rodlike electrodes extending in parallel with each other outside a hermetic container and bent inside it not to shadow each other. CONSTITUTION:Rodlike electrodes 1, 2 are secured to the stem of a cylindrical hermetic container 3 to extend in parallel with each other outside the container and bent inside it so that the electrodes first spread from each other along planes symmetric to each other as to the axis of the container and then turn across each other. Photoelectron emission layers are provided on the surfaces of the electrodes 1, 2 inside the container 3. The electrodes are thus integrated with connection pins to simplify the construction of a photoelectric tube and make it less likely for the electrodes to shadow each other to uniform the sensitivity of the tube in all directions.