公开(公告)号：CA2013074A1

公开(公告)日：1990-10-20

申请号：CA2013074

申请日：1990-03-26

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： SHIH, I-FU ,  CHANG, DAVID B. ,  MOISE, NORTON L. ,  DRUMMOND, JAMES E.

IPC: G06E1/00 ,  G06E3/00 ,  G06T1/00

Abstract: An electro-optical system that implements the self-tiling process of finding proper Iterated Function Systems for modeling natural objects. The system can operate in two different modes, a real-time interactive mode and an automated mode. The purpose of the system is to speed up the process of finding a proper IFS for a given object to be modeled. The system makes use of optical processing, including optical means for rotating, magnifying/demagnifying and translating an input image. Optical beamsplitters are used to combine transformed images to produce a tiled output image. In one embodiment, an automated controller evaluates the goodness of the match between the tiled image and the input image and generates control signals which cause adjustment of the settings of the optical means. The process is repeated automatically until the match is sufficiently good. The invention can also be operated in a manual, man-in-theloop mode.

公开(公告)号：WO1988001373A1

公开(公告)日：1988-02-25

申请号：PCT/US1987001502

申请日：1987-06-29

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  POLLACK, Slava, A. ,  SHIH, I-FU ,  TZENG, Robert

IPC: G01M11/00

CPC classification number: G01M11/33 ,  G01J1/4257

Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.

公开(公告)号：CA2009960A1

公开(公告)日：1990-09-21

申请号：CA2009960

申请日：1990-02-13

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： CHANG, DAVID B. ,  MOISE, NORTON L. ,  SHIH, I-FU

IPC: G02B5/32 ,  G02B27/00 ,  G02B27/01 ,  G09B9/32

Abstract: A display system is disclosed which employs multiple holographic elements (12, 14) for selectively reflecting images from separate projectors (P1, P2) to one or more distinct viewing volumes (V1, V2). The display system provides the capability to project differing perspective images to individual crew members located at separated positions within a training simulator.

公开(公告)号：CA2012036A1

公开(公告)日：1990-10-20

申请号：CA2012036

申请日：1990-03-13

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： SHIH, I-FU ,  CHANG, DAVID B. ,  MOISE, NORTON L.

IPC: G02B26/08 ,  G02B27/00 ,  G02B27/02 ,  G06E3/00 ,  G06T1/00

Abstract: An analog optical processor for performing affine transformations and constructing fractal objects. An optical processor for optically performing an iterated affine transformation includes a rotating prism (14), an imaging lens (16) and a translatable mirror (18), together with a pulsed laser (10) as an input light source and an image detector array (28) to record the final transformed image. The amount of rotation is determined by the setting of the rotating prism (14). The imaging lens (16) provides the required magnification or demagnification. The translating mirror (18) is shifted to provide the necessary translation. The pulsed image passes through the optical loop many times to perform the transformation. An optical Iterated Function System is implemented by connecting a plurality of the optical loops in parallel, together with shutters or beamsplitters for guiding the pulsed image to different loops according to the probabilities assigned by the Iterated Function System.

公开(公告)号：EP0278956B1

公开(公告)日：1991-05-22

申请号：EP87904597.9

申请日：1987-06-29

Applicant: Hughes Aircraft Company

Inventor： POLLACK, Slava, A. ,  SHIH, I-FU ,  TZENG, Robert

IPC: G01M11/00 ,  G01J1/42

CPC classification number: G01M11/33 ,  G01J1/4257

Abstract: Apparatus for measuring the numerical aperture of an optical fiber in the infrared region. The optical fiber (8) is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber (8). At a predetermined distance from the end of the optical fiber, a conversion screen (10) can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.

公开(公告)号：EP0278956A1

公开(公告)日：1988-08-24

申请号：EP87904597.0

申请日：1987-06-29

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： POLLACK, Slava, A. ,  SHIH, I-FU ,  TZENG, Robert

IPC: G01J1 ,  G01M11 ,  G02B6

CPC classification number: G01M11/33 ,  G01J1/4257

Abstract: Appareil pour mesurer l'ouverture numérique d'une fibre optique dans la région infrarouge. La fibre optique est montée de manière appropriée conformément aux normes d'essai classiques. On transmet de l'énergie infrarouge à travers les fibres optiques. A une distance prédéterminée de l'extrémité de la fibre optique, on peut disposer un écran de conversion pour transformer l'énergie infrarouge émise en une énergie de longueur d'onde inférieure. On peut enregistrer la distribution d'énergie à l'aide d'un détecteur compatible avec l'énergie de longueur d'onde inférieure, l'ouverture numérique pouvant être calculée à partir des données enregistrées.