Accession Number:

ADD012396

Title:

Phase-Only Optical Filter for Use in an Optical Correlation System.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

• Horner,Joseph L.

Report Date:

1986-05-13

Pagination or Media Count:

16.0

Abstract:

A phase-only optical filter capable of being utilized within a phase-only optical correlation system. The phase-only optical correlation system. The phase-only optical filter is made by mathematically generating preselected phase-only information by a fast Fourier Transform technique. This generated phase-only information is transferred onto an unexposed holographic film. Therefore, the film is developed and subsequently bleached. The resultant bleached film is the phase-only filter which, when utilized in a correlation system, provides substantially 100 utilization of the source of electromagnetic radiation during the corelation process.

Descriptors:

• *PATENTS
• *OPTICAL CORRELATORS
• *OPTICAL FILTERS
• PHOTOGRAPHIC FILM
• LASER BEAMS
• MATCHED FILTERS
• SIGNAL TO NOISE RATIO
• FAST FOURIER TRANSFORMS
• OPTICAL EQUIPMENT
• HOLOGRAPHY

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE