Abstract:
An electro-optical streak camera including an amplifier for amplifying a light signal under measurement. The amplified light signal is applied to an electro-optical deflector of a photodector portion of the streak camera.
Abstract:
PROBLEM TO BE SOLVED: To prevent blurring of an optical image and change in channel positions in a channel arrangement direction in an output window to achieve high accuracy multichannel measurement.SOLUTION: A streak tube 1 includes: a container 2 having an incident surface plate 2a and an output surface plate 2b; a photoelectric surface 7 provided inside the container 2, for emitting electrons according to light to be measured incident from the incident surface plate 2a; a mesh electrode 3, a first focusing electrode 4 and an aperture electrode 5 which form an axially symmetric electron lens for focusing the electrons emitted from the photoelectric surface 7 toward the output surface plate 2b; a sweeping electrode 6 provided inside the container 2, for sweeping the electrons focused by the axially symmetric electron lens in a sweeping direction along the output surface plate 2b; and a second focusing electrode 9 provided between the incident surface plate 2a and the output surface plate 2b, and forming a one-dimensional electron lens for focusing the electrons in the sweeping direction.
Abstract:
The present invention relates to a method and apparatus for monitoring characteristics of a pharmaceutical composition during preparation thereof by in the process vessel (1) of a fluidized bed apparatus, wherein a measuring device (11, 11') performs a spectometric measurement on the pharmaceutical composition in a wetting zone (B) into which a processing fluid is injected. The method also comprises the generic use of an optical probe device in spectrometric measurements, the probe device being capable of transmitting a two-dimensional image of radiation emitted from a monitoring area in the process vessel (1).
Abstract:
A first part of input light containing both background light and signal light is extracted by a sampling streak tube and converted to a first electric signal by a photodetector. A second part of the input light containing only background light is extracted by the same sampling streak tube by offsetting the sampling timing and converted to a second electric signal by the photodetector. A signal component corresponding to the signal light is extracted by taking the difference between the first and second electric signals. In one embodiment, the sampling timing is offset by applying a chopping voltage to chopping electrodes provided in the sampling streak tube.
Abstract:
A steak tube 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, and a sweep electrode 10 disposed in the container 2, having a pair of deflection plates 11, 12 for generating an electric field and a connection lead 13 connected to each deflection plate 11, 12, and configured to sweep the electrons in a sweep direction along the output plate 2b. An opposing of edges 11a, 11b of the deflection plate 11 in a direction of the output plate 2b are formed so as to extend in a direction from the entrance plate 2a to the output plate 2b, the connection lead 13 has a first connection portion 13a electrically connected to the deflection plate 11, and the first connection portion 13a is connected to the opposing of edges 11a, 11b.
Abstract:
Ce dispositif de calibrage comprend une source lumineuse (30) pour émettre une impulsion lumineuse incidente, une fibre optique de calibrage (10) de longueur déterminée, possédant une première et une seconde extrémités (12, 14) polies, la première extrémité (12) étant arrangée pour recevoir l'impulsion lumineuse et la seconde extrémité (14) étant disposée en regard du photodétecteur et des moyens semi-réfléchissants (16, 17) disposés à chaque extrémité (12, 14) de la fibre optique de calibrage (10). Application au calibrage d'une caméra à balayage ou de tout autre photodétecteur rapide.