TASK I, ITEM 1, VISITATION(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002900010011-9
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 11
• Document Creation Date: December 28, 2016
• Document Release Date: June 8, 2005
• Sequence Number: 11
• Publication Date: November 30, 1965
• Content Type: LETTER

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TAT
TAT
STAT
Mailing Address
Re: Task Y I 1, Visitation to
Dear John:
Enclosed are 3 copies of the report on a visitation
to 0 In addition 2 copies have been sent direct to the
Contracting Officer.
Regards,
WAS:ws
Enclosures
Declass Review by NGA.
November 30, 1965
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November 30, 1965
Yost MUce BOX BM
Southwest Station
Washington, D.C.
Subject:
Dear
STAT
ftelose
a visitation to STAT
ea the request of the Te-ehnlcel
epresen ve c t e Contracting Officer.
Additional copies have been sent directly to
the Technical Representative of the Contracting Officer.
Very truly your*,
ASpwe
Enclosures
20024
STAT
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 November 30, 1965
High Resolution Screen
STAT
g
y co
ce
ve
a technique or use on a rear projection mviewer to obtain:
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Background
b.) Uniform brightness from all viewing angles (true
Lambertian distribution)
c.) Good brightness in well lighted rooms
His technique consisted of coating a transparent screen with a
transparent phosphor. The phosphor emits visible light when
flooded with ultraviolet light. A rear projection viewer is
obtained by projecting an ultraviolet light image on the
screen. The phosphor then glows in visible light making the
image visible. The first contract work was highly successful
in demonstrating feasibility and 450 lines/mm screen resolution
was achieved. Present work is devoted to ways of getting
greater brightness and exploring phosphors for higher con-
version efficiency and desirable color.
a.) Very high screen resolution
Summary
The CVC D.C. sputtering unit and the STAT
Spectrophotometer were received. The CVC A. G. sputtering unit
is due December 15.
The necessity for a visible light projected aerial
image was reviewed. The requirement for a zoom lens was
reviewed.
Spectral variations in transmittance of the density
steps in step wedges is being measured.
lori
inall
n
i
d
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Discussion
The Consolidated Vacuum Corporation D.C. sputtering
units, AST-100, have been received. The Spectro-
photometer Model 450 and attachments were received but the lens
in the fluorescence attachment was broken. A replacement lens
is'being obtained from the manufacturer. The basic spectro-
photometer is in operation. The Consolidated Vacuum Corporation
A.C. sputtering unit, AST-200 is due December 15, 1965.
STAT I reviewed with the necessity for a visible
light projected aerial image along with the ultraviolet light
projected image. The requirement greatly complicates the
projection lens design. The visible light aerial image is not
needed to improve resolution as the screen resolution is
exceptionally high. The visible light aerial image does
provide a definite increase in brightness which is highly
desirable. In my opinion, however, it would be more economic
at this point in the program to work only with ultraviolet
light. When a phosphor has been selected and design of a
prototype rear projection viewer is initiated, it can then be
determined whether the brightness of the phosphor needs
augmenting and a decision made as to whether a visible light
image should be included.
The requirement for a zoom type projection lens was
STAT also reviewed with has been attempting
STAT
to get quotations on design and manufacture of a high perfor-
mance zoom projection lens. From the responses, it appears
that his performance requirements may be beyond the present
state of the art. It seems to me that the attributes of the
phosphor screen make a zoom lens unnecessary. In actual usage,
I would expect that a fixed magnification would be used which
would fill the screen with the width of the film. The full
width of the film could be reviewed by continuous one-axis
scan. To see more detail of an object of interest, the
observer could pick up a hand magnifier or auxilliary enlarging
lens to magnify a localized area of the screen.
It is the ease and flexibility of overall scanning and
detail examination that makes the phosphor screen especially
attractive. A fixed magnification lens is perfectly adequate
for this purpose and better image quality can be obtained at
lesser cost. In my opinion a zoom lens does not add to the
effectiveness of the phosphor screen.
has been making spectral transmission measure-
ments o density step tablets on the Model 450
Spectrophotometer. He has been having difficulty with light
dispersion producing large random variations in the readings
from step to step. At each density step, however, he has been
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able to get good transmission data over a wide spectral range.
It is expected that the spectral variation data can be combined
with diffuse densitometer readings in visible light and in
ultraviolet light to obtain the spectral variation of
transmittance at varying densities. The limited brightness
range of the instrument limits the measurements to density
steps 1 through 8 (density .05 to 1.09).
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 TAT
ST 0,
STAT
?
Contra
once: Telecoz
.r #
"L accordance with instructions in the Canfl-.'
of Interest of the subject contract
equests authorization
to per o
erv? ces tor:
The work will be concerned with a
Sensors. In the reference tolecon
there was no obvious conflict of ii
v eatigation would be necessary.
It will be appreciated if we can r
our request b r Friday, Dec. 10 while
Washington, D.C.
December 1. 1965
Very truly yours,
hA :ws
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-RDP78B04770A00290d0 1
1. 1965
m on Advance
ndicated
further in-
ive an an
 STAt
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 Approved For Release 2005/06/23 : CIA-RDP78BO477OA002900010011-9
Fig. 8-89. FLAME-TYPE CARBON ARCS
Burning Positions........
Upper Carbone
Diameter...............
Length ................
Lower Carbone
Diameter ..............
Length ................
Arc Current, amperes...
Are Voltage, a-cb.........
Arc Power, kw...........
Candlepower ............
umens .................
Lumens per Are 1Vatt.... ,
Color Temperature, ?K...:
1
2
3
4
5
6
7b
8,4
9d?s
10?
Type of Carbons........
u
Crr
a
Eu
"Sun-
"Sun-
a
Wrr
Enclosed
b
Photo
"Sun-
"
Photos
Studio?
shine"
shine"
arc
shine
,
Flame Materials..........
Poly-
Stron-
Rare
Rare
Poly-
None
Rare
Rare
Rare
h
Rare
th
metallic
tium
earth
earth
metallic
earth
earth
eart
ear
Vertical
Vertical
Vertical
Vertical
Vertical
Vertical
Vertical
Hori-
Hori-
Vertical
zontal
zontal
mm
22
22 mm
22 mm
22 mm
22 mm
% in.
% in.
6 mm
9 mm
8 mm
12
in.
12 in.
12 in.
12 in.
12 in.
3 to 16 in.
12 in.
6% in.
8 in.
12 in.
13 mm
13 mm
13 mm
13 mm
13 mm
% in.
% in.
6 mm
9 mm
7 mm
in.
12
12 in.
12 in.
12 in.
12 in.
3 to 16 in.
12 in.
6% in.
8 in.
9 in.
60
60
60
80
80
16
38
40
95
40
50
50
50
50
50
138
50
24
30
37d-cb
3.0
3.0
3.0
4.0
4.0
2.2
1.9
1.0
2.85
1.5
2,100
6,300
9,100
10,000
8,400
1,170
6,700
4,830
14,200
11,000
23,000
69,000
100,000
110,000
92,000
13,000
74,000
53,000
156,000
110,000
7
.6
23.0
33.3
27.5
23.0
?5.9
39.8
53.0
54.8
73.5
i
12
,800'
24,0001
i
i
7,420i
6,590
8,150
4,700
Spectral Intensity
microwatts/cm2 one meter
from arc axis")
Below 270m?..........
540
ISO
102
140
1,020
-
95
11
49
-
100
12
4S
270-320 m?............
.
.
.
320-400 m?
540
1
800
150
1,200
186
2 ,046
244
2,816
1,860
3,120
1,700
76
684
415
1,590
464
.
...
.....
400-450 m?............
,
390
600
1,100
4
050
1,704
210
3
2,306
520
3
1,480
600
2
177
442
722
2,223
405
1 , 602
844
3,671
726
3,965
450-700 m?............
700-1125 m?...........
1,580
9
480
,
2,4S0
10
290
,
3,032
820
9
,
3,500
420
11
,
3,220
14
500
1,681
600
6
1,264
5,189
1,368
3,290
5,632
8,763
2,123
4,593
Above 1125 m?.........
Total .............
,
14,930
,
19,460
,
20,100
,
24,000
,
27,800
,
10,600
1 10,253
7,140
20,600
11,930
Spectral Radiation (per
cent of input power)
Below 270 m?..........
1.8
.6
.34
.35
2.55
-
? 5
.11
-
35
.08
32
270-320 m?............
1.8
0
6
.5
4
0
.62
82
6
.61
7.04
4 65
7.80
-
7.7
.4
3.6
.49
4.15
.
5.59
.
3.09
320-400 m?............
400-450 m?............
.
1.3
.
3.7
.
5.68
5.90
80
8
3.70
50
6
.S
2
0
3.S
11.7
4.05
16.02
2.96
12.86
4.54
26.43
450-700 m?............
700-1125 m?...........
2.0
5.27
13.5
8.27
10.70
10.10
.
8.75
.
8.05
.
7.6
6.7
13.68
32
90
19.75
69
30
14.15
62
30
Above 1125 m?........
Total .............
31.6
49.77
34.3
64.87
32.70
67.00
28.55
60.00
36.25
69.50
29.9.
48.0
27.3
54.0
.
71.40
.
72.20
.
79.53
? Typical applications: 1, 2, 3, 4, 5, and 8, photochemical, therapeutic, accelerated exposure testing, or accelerated plant growth; 6 7, and 9 blueprinting diazo print-
ing, photo copying, and graphic arts; 10, motion picture and television studio lighting.
b Photographic white flame carbons.
? High intensity copper coated sunshine carbons.
d High intensity photo 98 carbons.
? Motion picture studio carbons.
t All combinations shown are operated coaxially.
x Both carbons are same in horizontal, coaxial a-c arcs.
1' All operated on alternating current except Item 10.
Horizontal candlepower, transverse to are axis.
1 Deviate enough from blackbody colors to make color temperature of doubtful meaning.
k See Section 24 for spectral energy distribution curves.
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(
 _ c o c n ~c cg rr
Apprdvid Qr kele si Z
I-i:, ~:, ~7 4\~.:
DS X Y. Y. k k k Y.
o ~ o o $ o ?o S o
04770A002900010011~
Positive Carbon
Diameter, mm ..................
I.ength,inches ..................
tine Carbon ....................
Diameter .......................
Length, nehes ..................
Are Current, amperes ................
Are Volts,d-c .......................
Are Power, watts ....................
Burning Rate inches per hour
Positive carbon .................
Negative Carbon ................
Approximate Crater Diameter, inches..
Maximum Brightness of Crater, candles
persq cm ........................
Forward Crater Candlepower.........
Crater Lumens** ....................
Total Lumenst ......................
Total Lumens per Arc Watt.......... .
Color Temperature, degrees Iielvint.. .
Low
INTENSITY
434
5
59
295
4.5
2.1
15000
975
3100
3100
10.4
3600
NON-ROTATING HIGH
INTENSITY
7
12-14
6mm
9
50
40
2000
7mm
9
70
42
2940
55000
10500
36800
55000
29.7
5950
13.6
4.3
83000
22000
77000
115000
39.1
5500-6500
Studio
"Yellow
Flame"
13.6
13.6
22
22
14'i in.
in.
34 in.
34 in.
11mm
1% In.
9
9
9
9
12
9
105
120
150
180
150
225
59
68
78
74
78
70
6200
8160
11700
13300
11700
15800
21.5
2.9
20.5
2.6
17.0
1.9
21.5
2.5
8.0
3.9
20.2
2.2
90000
85000
87500
95000
65000
68000
36000
44000
63000
78000
68000
99000
126000
154000
221000
273000
250000
347000
189000
231000
368000
410000
374000
521000
30.5
5500-6500
28.3
5500-6500
31.4
5500-6500
30.8
5500-6500
32.0
5400
33.0
4100
* Typical applications: 1, microscope illumination and projection; 2, 3, 4, 5, 6 and 7, motion picture projection; 8, searchlight projection; 9, motion picture set light-
ing and motion picture and television background projection.
** Includes light radiated in forward hemisphere.
t Includes light from crater and are flame in forward hemisphere.
I Crater radiation only.
00
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STAT
0
Mailing Address
Monthly letter progress report, Contract
October 31, 1965
Comments on Status
Task I - Item 1 "Special Investigations"
There were no specific requests for visitations this
period.
Task II - Item 1 "Submicron Measurement Error Analysis"
Two specific areas have been investigated and reported
under item .1 since its initiation. They are: a) Physical
and metallurgical properties of materials and b) Structural
rigidity and vibration control.
Reports No. 1 and No. 2 dealt with the physical and
metallurgical properties of materials. Reports No. 3 and
No. 4 dealt with structural rigidity and vibration control.
The aspects that require further work are:
a.) Search for data on the internal damping
coefficients of materials (especially
granite)
b.) Further information on development
status of Owens-Illinois Cer-Vit C-100
glass which has zero coefficient of
thermal expansion.
c.) Transmissibility of,vibration through
an air bearing-in a direction normal to
the air cushion.
d.) When some of the basic dimensions of
the precision stereo comparator have been
established, a dynamic model of its vibra-
tion characteristics can be analyzed.
e.) Investigation of the availability of
an 8 cps pneumatic isolator.
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STAT
October 31, 1965
Comments on Status (Continued)
In the computer analysis of the building floor slab submitted
in report No. 4, the fundamental frequency was found to be
15.6 cps. The analysis was based on 2,000 psi concrete.
The architects drawings of the building indicated that
3,000 psi concrete was used in the floor. The fundamental
floor slab frequency varies as the square root of the concrete
strength. Therefore the frequency should be:
15.6 j3O0O = 19.1 cps
2,000
The increase of the floor slab fundamental frequency to
19.1 cps does not materially alter our previous conclusions..
We were advised that the Bureau of Standards had been
requested to measure vibration levels in the particular
building areas of interest. I believe the most useful
data would be a vibration power spectrum plot with coordinates
of G2/cps vs cps.
Our concern over use of a 2 cps pneumatic isolator
centers on the large excursions an operator will encounter
in his normal work sequence. I suggest the technical staff
examine the optical bench in the Laboratory Branch which
is mounted on 2 cps "Serva-levi" pneumatic isolators. I
also suggest that a trial installation of the 2 cps
"Serva-levl" isolators on an existing piece mensuration
equipment be considered.
Task II - Item 4 "Automatic Target Recognition"
Over the past few months the General Motors Defense
Research Laboratory at Santa Barbara, California, has done
further work on the transformation of aerial photo imagery
by generating the fraunhofer diffraction pattern with
coherent light from a laser. They were encouraged by the
distinctiveness of the signatures of various terrain
features and culture. I suggest a visit by the technical
staff to GMDRL in the near future is in order to examine
the recent work.
Task II - Item 5 "Lamps for Rear Projection Viewers"
Considerable data has been collected on carbon arcs and
also on some new enclosed gaseous arc discharge lamps under
development. Preparation of the second technical report on
this subject has been initiated. Services of
will be needed for the preparation of the report.
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?TAT