STATEMENT OF FUNDS

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B00873A002000010083-1
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: November 8, 2012
• Sequence Number: 83
• Publication Date: September 10, 1966
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
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STAT
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
CORNING GLASS WORKS
ELECTRO-OPTICS LABORATORY
RALEIGH, NORTH CARO LINA
IMPROVED SCREEN FOR REAR PROJECTION VIEWERS :
Technical Report No. - 13
? :Date - September 16, 1966
Period CoVered - August 25, 1966
to
September 16i 1966
S?
S TAT
Declassified in Part- Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
TECHNICAL REPORT # 13
This constitutes Technical Report No. 13 which reports
progress in the interim between Technical Report No. 12
and 14. This is in keeping with our new schedule of
making detailed technical reports bi-monthly and a brief
summary report for the remaining periods.
I. Materials
A. Glass Ceramics
Four new samples of material have been ob-
tained and are being evaluated. Within the next
month we will obtain samples, made to our speci-
fications, of the following materials:
1. Low refractive index particles (n = 1.3) in
a high index glass (n = 2.0).
2. High index particles (n = 2.0+) in a low index
glass (n = 1.5).
3. New melts of AC 18 and AC 19. Each melt will
consist of four different heat treatments to
bracket the ones used for the first samples.
4. Metallic particles in glass.
B. Fotoform 13) Glass
We have started to investigate techniques of
forming lenticular surfaces on this glass by ex-
posing it through a fine nickel mask, heat treating
it, and then etching out the desired pattern. In
addition, we are growing surface layers of crystaline
material in this glass and correlating the thickness
of this scattering layer with the resulting optical
properties.
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1
?
- 2 -
Materials - Continued
C. Lenticular Surfaces
A glass blank measuring 16" x 5" x 1/2" with
40 - 1/8", 300 prisms cut into its surface has been
fabricated and sent to our facilities in New York
for redrawing into ribbon. This is the same process
used in making optical fibers. After redraw there
will be four groups of ribbon with following sizes
of lenticules:
1.
5
- 8
Microns
2.
12
- 18
Microns
3.
30
- 35
Microns
4.
220
- 230
Microns
The optical properties of both the lenticular ribbon
and of certain scattering materials with the ribbon
attached, to form a lenticular layer, will be in-
vestigated.
Instrumentation
We are experiencing some delay in completing the
modulation transfer function analyzer. This is because
of long delivery times for two critical components. As
much of the system as possible has been checked out and
only a minimum amount of final checking will be required
following the completion of the electronics.
Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873A002000010083-1