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1. (EP0858708) IMAGING SYSTEM

Office : European Patent Office
Application Number: 96937845 Application Date: 30.10.1996
Publication Number: 0858708 Publication Date: 19.08.1998
Publication Kind : A4
Prior PCT appl.: Application Number:US1996017505 ; Publication Number: Click to see the data
IPC:
H 04N
H 04N
G02B 21/00
G09G 5/00
H04N 5/228
H04N 5/325
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
18
Closed-circuit television systems, i.e. systems in which the signal is not broadcast
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
30
Transforming light or analogous information into electric information
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
21
Microscopes
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
5
Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
228
Circuit details for pick-up tubes
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
30
Transforming light or analogous information into electric information
32
Transforming X-rays
321
with video transmission of fluoroscopic images
325
Image enhancement, e.g. by subtraction techniques using polyenergetic X-rays
CPC:
H04N 5/228
G02B 21/002
Applicants: GRAVELY BENJAMIN T
Inventors: GRAVELY BENJAMIN T
Priority Data: 708695 31.10.1995 US
9617505 30.10.1996 US
Title: (DE) BILDAUFNAHMESYSTEM
(EN) IMAGING SYSTEM
(FR) SYSTEME D'IMAGERIE
Abstract:
(EN) An imaging system operates at the diffraction limit of the optics to which it is connected and outputs a signal representative of a sample (S) lying in the sample plane (17). The system comprises a cathode ray tube (30), an optical lens system (10'), and a means for sensing (40). The cathode ray tube (30) comprises an electron gun (34) for generating an electron beam (35) in a raster pattern. The electron beam (35) is adapted to produce an illuminated spot (39a) that scans correspondingly in the raster pattern and wherein the spot (39a) is positioned in an object plane (26). The optical lens system (10') focuses in a diffraction limited manner, the object plane (26) on to the sample plane (17), such that the image of the spot (39b) is the smallest diffraction limited size as determined by the optical lens system (10').
(FR) Un système d'imagerie fonctionne à la limite de diffraction de l'optique sur laquelle il est connecté et produit un signal de sortie repésentant un échantillon (S) se trouvant dans le plan (17) de l'échantillon. Le système comprend un tube à rayon cathodique (30), un système à lentille optique (10') et un dispositif de détection (40). Le tube à rayon cathodique (30) comprend un canon à électrons (34) qui génère un faisceau d'électrons (35) suivant une configuration de trame. Le faisceau d'électrons (35) est adapté pour produire un point ou spot éclairé (39A) qui balaie de manière correspondante la configuration de trame, le spot (39a) étant positionné dans un plan d'objet (26). Le système à lentille optique (10') focalise de manière limitée en diffraction le plan d'objet (26) sur le plan d'échantillon (17), de sorte que l'image du spot (39b) ait la taille limitée en diffraction la plus petite, comme déterminée par le système à lentille optique (10').
Also published as:
JP2000500881CA2234950AU1996075294WO/1997/016922