| Patent application number | Description | Published |
|---|
| 20090026353 | Photomultiplier Tube and Radiation Detecting Device - A vacuum vessel is configured by hermetically joining a faceplate ( | 01-29-2009 |
| 20090140151 | Photomultiplier Tube and Radiation Detecting Device - A vacuum vessel is configured by hermetically joining a faceplate ( | 06-04-2009 |
| 20090160332 | Photomultiplier Tube, Radiation Detecting Device, and Photomultiplier Tube Manufacturing Method - A vacuum vessel is configured by hermetically joining a faceplate to one end of a side tube and a stem to the other end via a tubular member. A photocathode, a focusing electrode, dynodes, a drawing electrode, and anodes are arranged within the vacuum vessel. The dynodes and the anodes have a plurality of channels in association with each other. Each electrode has cutout portions that overlap in a stacking direction, and supporting pins and lead pins are arranged in the cutout portions. A bridge is provided in a concave section arranged between unit anodes, and the bridge is cut off after the anode plate is placed on stem pins. Effective areas of each electrode and the anode are secured sufficiently, thereby allowing electrons to be detected efficiently. | 06-25-2009 |
| 20090200940 | Photomultiplier Tube and Radiation Detecting Device - A vacuum vessel ( | 08-13-2009 |
| 20090212699 | PHOTOMULTIPLIER - The present invention relates to a photomultiplier that realizes a significant improvement of response time characteristics by a structure enabling mass production. The photomultiplier comprises a sealed container, and, in the sealed container, a photocathode, an electron multiplier section, and an anode are respectively disposed. The electron multiplier section includes multiple stages of dynode units, and each of the multiple stages of dynode units is fixed with one end of the associated dynode pin while being electrically connected thereto. In particular, the dynode pin, whose one ends are fixed to the multiple stages of dynode units, are held within an effective region of the electron multiplier section contributing to secondary electron multiplication, when the electron multiplier section is viewed from the photocathode side. By this configuration, a focusing distance from the photocathode to a first stage dynode unit can be shortened effectively and the effective region of the electron multiplier section can be enlarged to effectively reduce variations in transit time of photoelectrons propagating from the photocathode to the first stage dynode unit. | 08-27-2009 |
| 20100213837 | PHOTOMULTIPLIER TUBE - Electrons are prevented from being made incident onto an insulation part of a casing between dynodes to improve a withstand voltage. The photomultiplier tube | 08-26-2010 |
| Patent application number | Description | Published |
|---|
| 20090009077 | Photomultiplier Tube and Radiation Detecting Device - A vacuum vessel is configured by hermetically joining a faceplate ( | 01-08-2009 |
| 20090045741 | Photomultiplier - The present invention relates to a photomultiplier having a fine structure capable of realizing high detection accuracy by effectively suppressing cross talk among electron-multiplier channels. The photomultiplier comprises a housing whose inside is maintained vacuum, and, in the housing, a photocathode, an electron-multiplier section, and anodes are disposed. The electron-multiplier section has groove portions for cascade-multiplying photoelectrons as electron-multiplier channels, and the anodes are constituted by channel electrodes corresponding to the groove portions respectively defined by wall parts. In particular, at least parts of the respective channel electrodes are located in spaces sandwiched between pairs of wall parts defining the corresponding groove portions. | 02-19-2009 |
| 20090218944 | Photomultiplier - The present invention relates to a photomultiplier having a fine configuration capable of realizing stable detection accuracy. The photomultiplier has a housing whose inside is maintained vacuum, and a photocathode, an electron-multiplier section, and an anode are disposed in the housing. In particular, one or more control electrodes disposed in an internal space of the housing which surrounds the electron-multiplier section and the anode are electrically connected via one or more connection parts extending from an electron emission terminal of the electron-multiplier section. In this configuration, due to a voltage, instead of the applying between an electron entrance terminal and the electron emission terminal of the electron-multiplier section, being applied between the electron entrance terminal and the control electrodes, an electric potential gradient which is increased gradually from the photocathode side toward the anode side is formed in the electron-multiplier section, and a sufficient electric potential difference is provided between the electron emission terminal of the electron-multiplier section and the anode, which makes it possible to obtain stable detection accuracy. | 09-03-2009 |
| 20090236985 | Electron tube and method for manufacturing electron tube - A photomultiplier tube | 09-24-2009 |
| 20090283290 | Vacuum Device - An object is to sufficiently keep the airtightness in a vacuum container even when it is made smaller. A photomultiplier tube | 11-19-2009 |
| 20090305450 | METHOD FOR MANUFACTURING PHOTOELECTRIC CONVERTING DEVICE - The present invention relates to a manufacturing method of obtaining a photoelectric converting device which can sufficiently maintain airtightness of a housing space for photocathode without degradation of the characteristics of the photocathode. In accordance with the manufacturing method, on the side wall end face of a lower frame and a bonding portion of an upper frame forming an envelope of the photoelectric converting device, a multilayered metal film of chromium and nickel is formed. In a vacuum space decompressed to a predetermined degree of vacuum and having a temperature not more than the melting point of indium, these upper and lower frames introduced therein are brought into close contact with each other with a predetermined pressure while sandwiching indium wire members, and accordingly, an envelope having a housing space whose airtightness is sufficiently maintained is obtained. | 12-10-2009 |
