摘要:
A steak tube has a container with an entrance plate and an output plate, a photocathode disposed in the container and configured to emit electrons according to light to be measured, the light having been incident through the entrance plate, and a sweep electrode disposed in the container, having a pair of deflection plates for generating an electric field and a connection lead connected to each deflection plate, and configured to sweep the electrons in a sweep direction along the output plate. An opposing of edges of the deflection plate in a direction of the output plate are formed so as to extend in a direction from the entrance plate to the output plate, the connection lead has a first connection portion electrically connected to the deflection plate, and the first connection portion is connected to the opposing of edges.
摘要:
A streak tube the total length of which is short. An optical image of an object is converted into a plurality of divided micro incident electronic images by converting means and photoelectrons from these divided micro incident electronic images are focused by a focusing electron lens. Further, the photoelectrons are swept by a deflecting means and imaged on an output plane. Thus, the optical image of the object is converted into the divided micro incident electronic images, so that focusing and sweeping can be performed in short distance. Accordingly, the total length of the tube can be short.
摘要:
There is disclosed a photocathode comprising:a photoelectric conversion layer for internally exciting photoelectrons in response to incident photons; a semiconductor layer having a photoelectron emission surface for emitting the photoelectrons generated and accelerated in the photoelectric conversion layer from the photoelectron emission surface; an upper surface electrode formed on the photoelectron emission surface of the semiconductor layer; and a lower surface electrode formed on the semiconductor layer so that the lower surface electrode is opposite to the upper surface electrode through the semiconductor layer, the upper surface electrode being divided so as to provide a plurality of pixel electrodes which are electrically insulated from each other, the plurality of pixel electrodes being respectively connected to a plurarity of bias application wires.
摘要:
An optical shutter-camera includes a first optical unit, a deflecting unit, and a second optical unit. The first optical unit receives image rays from a subject and outputs first optical image rays to form a first optical image of the subject. The deflecting unit includes a deflection member and a pumping unit. The deflection member is a nonlinear optical material whose refractive index is varied by beam radiation. The pumping unit radiates a pumping beam having a variable intensity to a required region of the deflection member and varies the refractive index of the required region to variably deflect optical paths of the first optical image rays. The deflection unit is positioned so that a deflection center of the optical paths of the first optical image rays, formed when the variable intensity-pumping beam in incident on the deflection member, substantially agree with a position where the first optical image is formed. The second optical unit receives the first optical image rays from the deflection unit and outputs second optical image rays to form a second optical image of the subject. The second optical unit includes an aperture. The aperture restricts one of the first optical image rays and the second optical image rays.
摘要:
A streak tube device for electrically slitting the image of an object provided by an optical system. The streak tube device includes a streak tube body having a photoelectric conversion device for receiving the object image and producing a corresponding electron image. The streak tube device further includes focusing apparatus for focusing the electron image, electrical slitting apparatus for transmitting a selected portion, that is, slit images of the electron image, apparatus for controlling the electrical slitting apparatus, and focusing apparatus for focusing slit images on a fluorescent surface included within the streak tube body. The electrical slitting apparatus of the streak tube device includes a slit member having a slit which extends across the streak tube body, shift electrodes for vertically shifting the transmitted electron image, and a circular collimator for collimating the shifted electron image and transmitting the collimated electron image through the slit to form a slit image.
摘要:
A streak apparatus includes: a vacuum container 10 having an electron beam source 20 provided on one end side to emit an electron beam E and an output section 60 provided on the other end side to convert the electron beam into an image; an accelerating section 30 provided in the vacuum container to accelerate the electron beam; an irradiation optical system 40 for collecting and applying to-be-measured light R to the electron beam accelerated by the accelerating section; and a sweep section 50 provided between the accelerating section and the output section to sweep the electron beam having interacted with the to-be-measured light in a direction approximately perpendicular to the direction of a displacement of the electron beam generated through the interaction. This allows the streak apparatus to have a higher temporal resolution.
摘要:
An alpha-ray image detecting apparatus detects the image of alpha-rays emitted from nuclides of a substance by analyzing the electrons emitted from the substance. The apparatus includes a vacuum chamber having a layer of fluorescent material at one end and an electronic optical system for multiplying the emitted electrons and focusing the emitted electrons on the fluourescent layer.
摘要:
A synchronous scan streaking device comprising a photoelectric layer, an electronic lens, an anode with an aperture, a pair of deflection electrodes, and a phosphor layer arranged in order within a vacuum envelope. A deflection voltage at the same frequency as the repetition rate of the light pulses incident on the phosphor layer to be measured is fed from deflection voltage generation means to the deflection electrodes so as to repetitively generate an enhanced image of the incident light on the phosphor layer. At least one shielding metal structure which is connected to the common potential source is arranged in the space between the deflection electrode plate and the wall of the envelope, and surrounding a deflection electrode plate lead provided to connect the deflection electrode plate through the envelope to the deflection voltage generation means.
摘要:
A steak tube has a container with an entrance plate and an output plate, a photocathode disposed in the container and configured to emit electrons according to light to be measured, the light having been incident through the entrance plate, and a sweep electrode disposed in the container, having a pair of deflection plates for generating an electric field and a connection lead connected to each deflection plate, and configured to sweep the electrons in a sweep direction along the output plate. An opposing of edges of the deflection plate in a direction of the output plate are formed so as to extend in a direction from the entrance plate to the output plate, the connection lead has a first connection portion electrically connected to the deflection plate, and the first connection portion is connected to the opposing of edges.
摘要:
A steak tube 1 has a container 2 with an entrance plate 2a and an output plate 2b; a photocathode 7 disposed in the container 2 and configured to emit electrons according to light to be measured, the light having been incident through the entrance plate 2a; a mesh electrode 3, a first focusing electrode 4, and an aperture electrode 5 forming an axially symmetric electron lens for focusing the electrons emitted from the photocathode 7, toward the output plate 2b; a sweep electrode 6 disposed in the container 2 and configured to sweep the electrons focused by the axially symmetric electron lens, in a sweep direction along the output plate 2b; and a second focusing electrode 9 disposed between the entrance plate 2a and the output plated 2b and forming a one-dimensional electron lens for focusing the electrons in the sweep direction.