Optical: systems and elements – Diffraction – Using fourier transform spatial filtering
Patent
1995-02-16
1998-08-25
Dzierzynski, Paul M.
Optical: systems and elements
Diffraction
Using fourier transform spatial filtering
359 9, 349 5, 349 17, G02B 2746, G03H 108
Patent
active
057988641
ABSTRACT:
A projecting type image display apparatus includes a calculation processing unit for calculating a Fraunhofer diffraction image of an original image, an image display unit for producing/displaying the calculated Fraunhofer diffraction image, and an image converting unit for projecting the produced/displayed Fraunhofer diffraction image to the original image and projecting the original image on the screen. The calculation processing unit has a function of calculating the Fraunhofer diffraction image of the projection image and outputting the same to the image display unit. The image display unit is provided with an image display element on which the Fraunhofer diffraction image is optically displayed. The image projecting unit is provided with first and second lenses for converting the Fraunhofer diffraction image to the original image and projecting the original image on the screen.
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Chang Audrey
Dzierzynski Paul M.
Olympus Optical Co,. Ltd.
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