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Browse Prior Art Database

Fourier Inverse Dispersion Image Formation for Intensity

IP.com Disclosure Number: IPCOM000096113D
Original Publication Date: 1964-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Lohmann, AW: AUTHOR

Abstract

The system transmits information from record 10 to a screen 20. The record is illuminated by a Michelson interferometer 5. The light which passes through record 10 is transmitted via a light pipe to a second Michelson interferometer 6. Interferometer 5 is illuminated by a white source of light 7. Hence, a continuum of interference patterns is projected onto the face of record 10.

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Fourier Inverse Dispersion Image Formation for Intensity

The system transmits information from record 10 to a screen 20. The record is illuminated by a Michelson interferometer 5. The light which passes through record 10 is transmitted via a light pipe to a second Michelson interferometer 6. Interferometer 5 is illuminated by a white source of light 7. Hence, a continuum of interference patterns is projected onto the face of record
10.

Depending upon the transmissivity of various parts of the object, certain of these patterns are transmitted through record 10 in greater intensity than others. Wavelengths which created these patterns recreate them at the output, thus recreating an image of record 10.

The lower drawing shows a similar system which utilizes two Mach-Zehnder interferometers 50 and 60. Record 100 is placed in one of the light paths within interferometer 50.

In this case, both differences in transmissivity and differences in phase are effective in creating a pattern. Hence, the image created at the output of interferometer 60 represents both phase differences and transmissivity difference in record 100.

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