PRE DESIGN REVIEW

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05171A000400020029-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 24
• Document Creation Date: December 28, 2016
• Document Release Date: February 1, 2005
• Sequence Number: 29
• Content Type: LIST

Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
9/q/ P/4
PRE DESIGN REVIEW
SCOPE
Establish feasibility of HILS approach
Approve light pack design concepts
Approve tracking system design concepts
Investigate trade offs presented
RESULT
Establish configuration for final design
Declassification Review by NGA/DoD
Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
STUDY PHASE - OPTICAL
HAS ACCOMPLISHED
BACKGROUND LUMINANCE
SUBSTITUTION OF STRAIGHT FLUORESCENT LAMPS
RETENTION OF ELECTRICAL MASKING
USE OF TUNGSTEN AS LIGHT SPOT SOURCE
COLOR BALANCE AND RENDERING
CONFIGURATION OF LIGHT PACK
THREE LAMPS HAVE BEEN REVIEWED
TUNGSTEN - TRU FOCUS TYPE (HALOGEN)
MARC 300
XENON ARC
INBOARD
OUTBOARD
PREFERENCE DIRECTED TO TUNGSTEN LIGHT PACK
LOWER OPERATING COST
MINIMUM RECURRING COST
EASE IN REPLACEMENT
MINIMUM ELECTRIC INPUT POWER
SAFETY
SIMPLEST CONFIGURATION
EXTRA HIGH COLOR RENDERING
MINIMUM POWER REQUIREMENTS
SYSTEM IS VERSATILE
LUMINANCE CAN BE INCREASED BY
VOLTAGE INCREASE AS FOR B/W OR COLOR FILM
COLOR FILTERS REMOVAL FOR B/W FILM
COLLIMATOR SUBSTITUTION TO REDUCE SPOT SIZE
VIEWING SCREEN GAIN CHANGE
Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
BACKGROUND LIGHTING GOALS
1) 2000 FT. LAMBERTS MINIMUM
2) UNIFORMITY COMPARABLE TO EXISTING MLT
EXCLUDING CONTRIBUTION OF HILS
RETAIN ELECTRIC MASKING CONTROL
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 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
BACKGROUND LIGHTING STUDY RESULTS
STUDIED TWO APPROACHES
1) Curved lamps
2) Shortened straight lamps
SELECTED SHORTENED STRAIGHT LAMPS - Fulfills goals with TR-70 screen
1) 2000 ft. lamberts at center measured with GFE Weston meter
2) Retain intensity control on background lighting
3) Background fluorescents provide along center a luminance dis-
tribution with minimum of 2000 ft. lamberts at 4" from center
edge and does not drop below 45% 1/2" from center edge as
measured with GFP Weston and excluding effect of HILS pack.
SOLUTION - See Sketch 1
1) Short straight lamps of identical phosphor and diameter as
existing MLT.
2) High reflecting mirror at one end of lamps center edge of lamp
cavity or light tray tilted 55? up from horizontal.
Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 LAMP
TRM
Approve
d For Release '2005/02/17 : CIA-RDP78BO5171A0004000200,29-0
TABLE.
GLASS
3. e e F- S. 2.2
QPENING,SIDE
V RIGHT SIDE
PLATE
FRON`C VIEW
BACKGROUND. LAMP
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MIRROR
 Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0_
LIGHT PACK STUDY GOALS
25,000 FOOT LAMBERTS
20% MAXIMUM VARIATION OVER AREA WITHIN 2-3/4" SPOT
2-3/4" SPOT
CORRELATED COLOR TEMPERATURE 5000?K t 500
CRI MINIMUM OF 70
x, y CHROMATICITY AIM POINTS
INTENSITY CONTROL CONTINUOUSLY VARIABLE 1500-25,000
FT. LAMBERTS
HEAT AT FILM OF 2.0 DENSITY 30?F ABOVE AMBIENT AT 25,000
FT. LAMBERTS
8" x 15" CENTRAL AREA
FILL NUMERICAL APERTURE EFFECTIVELY
Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
SUMMARY TUNGSTEN LIGHT PACK
VIEWING SURFACE DIFFUSER
LAM P
LIFE
REPLACEMENT
LUMINANCE
INTENSITY CONTROL
SPOT SIZE
UNIFORMITY
COLOR
Color Rendering Index
Chromaticity Air Points
IRRADIANCE
FILM TEMPERATURE
LUMINANCE
Polacoat TR-70
ELH 300watt, 120 volt rated, 110 operating volts
Nominal 100 hours at operating volts,
$.09/hour operating cost
Snap in
25,000 ft. lamberts peak color corrected
To 1500 ft. lamberts color corrected iris control
Overall 3" diameter
25% over 2-1/2" effective diameter
30% over 2-3/4" effective diameter
4800?K nominal - minimum 4500?K
80+
x = .350, y= .365 nominal
At 10" height 2 x 10-3 watt/cm2
At 25,000 ft. lamberts
Spot only 22?F above ambient
Surround maximum 30?F above ambient
Through BBL microscope, lOx ocular, 3x ASR,
3x zoom = 560 ft. lamberts approximate
For black and white film
Remove color filter, luminance, 120,000 fl
plus
Substitute higher gain diffuser 210,000 fl
or
Retain color correction and 45,000 fl
substitute higher gain diffuser corrected
Max. luminance possible thru 4,600 fI
microscope (at 210,000 fl)
ILLEGIB
Approved For Release 2005/02/17-:' CTh-RDP78BO5171A000400020029-0
 COLD MIRROR
SNAP IN
FIELD LENS #2 ELH LAMP
WITH COLD
MIXER \ . tAIQr700
COLDf\COM('E 4 AT1WG
.FILTERS
IRIS CONTROL FIELD LENS #1
HEAT
c1GSORBER
Approved For Release 2005/02/17 :. CIA-RDP78BO5171A000400020029-0
DIFFUSED'
VIEWING
SURFACE
For Release 2005/02/17 CIA-RDP78B05171A000400020029-0
COfJFIGURATiON-
INTENl51TY LIGHT PACK
 25X1
CIE CHROMATICITY
COORDINATE SYSTEM
.34 .35 .36
.32 .33 X
RANGE AND COLOR CORRECTION EJL LAMPS (200WATTS)
Approved For Release 2005/02/17 :'CIA-RDP78B05171A000400020029-0
 CIE CHROMATICITY
COORDINATE SYSTEM
.34 .35 .36 .37
.32 .33 X
PROJECTED ELH CORRECTED LAMPS (300WATTS)
Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
25X1
POL/ R 07 LUM1NANC~-
VS
ANGLE FROM NORMAL-
-100
MAXIMUM
`
~~ `~ ~ POSSIBLE
(CALCULATED)
ACTUAL
MEASURED
~P,{S
ACTUAL
MEA5URED
%? IRIS
- 90
- 80
- 70
- 20
11V2 NALF ANGLE -10
MAX. N.A. _ .206
10 . 15 20 25 30
Approved For Rel
2F NORMAL
ase 5/02/17: CIA-RDP78BO51-71A000400020029-.0
 Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
25X1
TECHNICAL SUMMARY OF XENON ARC PACK
ILLEGIB
ILLEGIB
(2)
(2)
(2)
Lamp I LC 300 watt
Sapphire envelope
Power Supply - 400 watt
18x18x9", 90 lbs. each
Igniters - 5-1/2x5-1/2x4"
8 lbs. each, 20KV
(2) Lamp PE K 500 watt
Ozone free quartz
(2) Power Supply - 600 watt
24x 12x 12", 120 lbs. each
(2) Igniters - 5-1%2x5-1/2x4"
8 lbs. each, 30 KV
Lamp length < 2-1/2" Lamp length 5.8"
Life - 500 hours, 40?/hr - 20 /hr Life - 1000 hours, 150/hr - 101/hr.
Intensity - 750 cd les. Intensity - 1600 cd les..
Special development req'd (Ozone gas seal)
Intensity control - Neutral density disk Neutral density disk
Calculated Performance
Luminance
Pea k
14,000 ft. lamb. 30,000 ft. lamb.
Uniformity 30%
Color
Temperature 55000K
CRI
Slow flicker from arc wandering
Approved For Release 2005V
20%
55000K
80+
ILLEGIB
ILLEGIB
 Approved
-%Z IGNITeg
INSIDE SURFACE
(REAR)0F TRAY SPACE
For Release 2.005/02/17 : CIA-RDP78B05171A000400020029-0
Ih.1SME LIMITS
TO TRA`( SFACE.
N.D. DISK
INTEt-1~S 17 Y
COW'rROL
YENOW ARC. - OUTBOARD CO NF (:.
Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 Approved For Release 2005/12/17 : CIA-RDP78BO517PA000400020029-0
CIE CHROMATICITY
COORDINATE SYSTEM
.32 .33 X .34 .35
CORRECTED XENON ARC LAMPS (TYPICAL)
.36
.37
Approved For Release 2005/02/17: CIA-RDP78BO5171A000400020029-0
 pproved For Release 5/02/17: CIA-RDP78B05171A00040.0020029-0
Is -
ILLEGIB
LAMP
LI FE
LUMINANCE
MAX. LUMINANCE
TUNGSTEN
300 watt
100 hours
25, 000 f 1
12 0, 000 f I
ARC OUTBOARD
500 watt
1000 hours
30, 000 f 1
55, 000 f I
(Uncorrected)
COLOR TEMPERATURE 4800?K 5500?K
TOTAL SIZE (per table) < 1 ft3 - 5 ft3
WEIGHT < 10 lb. ,,, 250 lbs.
POWER 600w ,,, 1200 w
OPERATING COST (one side)
LAMP COST
POWER SUPPLY
OPTICS
Light Pack Components for Prototype
Power Supply
and Optics
ILLEGIB
25X1
ILLEGIB
25X1
Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
CONFIGURATION GOALS
HILS COVERAGE - 8" x 15"
HILS TO TRACK MICROSCOPE RHOMBOIDS
EACH HILS TO BE USABLE ALONE
MANUAL POSITION CONTROL FOR EACH HILS
SEPARATE ON/OFF & DIMMING CONTROLS FOR EACH HILS
NO CHANGE IN VIEWING SURFACE HEIGHT
MINIMUM SHADOWING FROM HILS
Approved-f r Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
CONFIGURATION STUDY PHASE RESULTS
HI LS COVERAGE 8" x 13"
(7
MOTION SYSTEM DC gear head motors capable of driving the HILS
in X and Y from 0 to 1"/sec. W i I I operate norma I ly
when table is tilted.
TRACKING SYSTEM
MANUAL CONTROL
Positive position servo to the bridge. Position trans-
ducers will be located on the bridge and each HILS.
X and Y position pc:entiometers wi I I be provided
for each HILS.
PARKING A Park/`Track switch for each HILS will be provided.
The Park position w i l l move the HI LS to the Rear
Center of the viewing surface.
POWER
An ON/OFF switch will be provided for each HILS.
The power switch will also control the fan for each
HILS.
Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
COOLING GOALS
FILM PLANE < 110?F or 30?F above ambient
TEST CONDITION 66% of.glass covered by 2.0 density film
Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
STUDY PHASE RESULTS
COOLING
FILM TEMPERATURE - measured in center of HILS Spot
operating at 25,000 ft. lamberts with background at
ft. lamberts 22?F Above Ambient
TEMPERATURE OF SURROUNDING FILM -
measured as above 30?F Above Ambient max.
COOLING METHOD - exhaust fan for each HILS, approximately 8 CFM per HILS.
LAMP BASE TEMPERATURE - (Safe operating temperature 300?C) 230?C
FILM TEMPERATURE AT INCREASED LUMINANCE LEVELS - see chart.
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 Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
IL ao
0
L1J 60 -
N
tj~
40-1
20K 40K 60K 80K 100K 120K 140K
1NTEN'51" `f OF H I L.S (F00? LAMBERTS,)
PI LM TEMP. R15E AROUG AM51E1-4'7
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 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
CONCLUSIONS
Specification Conformance
Tungsten light pack meets or exceeds a I I specifications except
uniformity of spot.
Uniformity worse case is 30% at edge of spot only.
Tungsten Light Pack
Less costly than arc source
Smaller than arc source
Requires no external power supply
Lower power consumption than arc source
Safer than arc source.
RECOMMENDATION
Tungsten light pack with ELH 300 watt lamp, with electric servo
controlled X,Y drive and tracking system.
Z/
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 Approved For Release 2005/02/17 : CIA-RDP78B05171A00040002002
H.I.L.S. CONFIGURATION
IRIS DRIVE
AIR EXHAUST
Approved For Release 2005/02/17 : CIA-RDP78B05171A000400020029-0
 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
PERFORMANCE
TUNGSTEN LIGHT PACK THROUGH MICROSCOPE
Numerical Aperture Illumination Comparison
3x ASR, NA .206, 10x Ocular, TR-70 Diffuser over HI LS
Luminance
Target
H I LS
23, 000 11W t>r
MLT
HILS
2,850
0
8
Rati
.
o MLT
Luminance
500
70
7.2
2.0 Zoom
22,000 500
2,850 69
Ratio 7.8 7.3
0.7 Zoom
22,500 530
2,800 70
Ratio 8.0 7.6
Luminance Transmission. of Microscope
3x ASR, 3x Zoom, 1Ox Ocular, MLT Source
82 Ft. Lamberts through microscope
3350 Ft. Lamberts MLT target
T =2.4x 10-2
Binocular viewing through one rhomboid
Effectiveness
.90
.95
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 Approved For Release 2005/02/17 : CIA-RDP78BO5171A000400020029-0
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