IMAGE QUALITY METER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A001800100014-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: April 16, 2001
• Sequence Number: 14
• Publication Date: July 25, 1962
• Content Type: TRIP

Approved For Release 2001/07/16 : CIA-RDP78B04747A001800100014-7
2. Image Quality Meter
During the undersigned's stay at the faAi3NTL
approximately four days were spent studying the production model of the
image quality meter.
project engineer, explained the
modifications that were built into the production model of this in-
strument. As it now stands, it is much more useable than the proto-
type which was delivered to the National Bureau of Standards during
the past month.
The entire optical support has been re-designed and made into
one massive self-contained unit. This eliminates all the distortion
and vibration inherent in the prototype model. Servicing and aligning
the optical system has also been simplified.
The incorporation of a light table in the surface of the
instrument's work table makes it very helpful for studying the film
before placing them in the film platen.
The stage has been equipped with a micrometer for easier manipu-
lation. The glass surface of the stage has been deeply etched with &.
circular grove through which vacuum holds the analysed film in place.
The attached photograph is a polaroid copy of a resolution
tracing made with the instrument at 20 times magnification of a #7
pattern test chart transparency. The fourth hill of the series of
curves on the graph indicates that the instrument scanned and resolved
162 lines per millimeter.
The image quality meter worked upon during this period of
familiarization is the first of six production models ordered and is
now ready for delivery. The parts of the other five instruments are
on hand at the factory and require assembly and adjustment before
delivery.
The instrument as presently designed should prove highly
useful as a research tool and control instrument.
DECLASS REVIEW by NIMA/DOD
Approved For Release 2001/07/16 : CIA-RDP78B04747A001800100014-7