SINE-WAVE TESTING EQUIPMENT

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002000030008-9
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: January 22, 2001
• Sequence Number: 8
• Publication Date: November 2, 1965
• Content Type: FORM

. Approved For Rele 2001/03/035-EUK-RDP78B047 0f1200003( Q,(~$
(When Filled In)
'
1
R & D CATALOG FORM
77 T
DATE
22 November 1965
1.
:
3.ECT TITLE/CODE NAME
2. SHORT PROJECT DESCRIPTION
y
-,e-Wave Testing
The project involves the development of a device
:_:ipment
for field measurements of optical system
l
performance.
ee
3.
;,Tr:JC.TOR NAME 4. LOCATION OF CONTRACTOR
ufac purer CPIF (Cost and -performance incentives)
7.
.'..NDS
8. REQUISITION NO.
9. BUDGET PROJECT NO.
)65
NP-IA-3
10. EFFECTIVE CONTRACT DATE
11. SECURITY CLASS.
-956
(l'`e in - end)
AA - Confidential
Y
15 Nov 65 - 15 May 6
T - Unclassified
W - Unclassified
~12.
RESPONSIBLE DIRECTORATE/OFFICE/PROJECT OFFICER TELEPHONE EXTENSION
-.l/1VPIC/P&US,-/2476 25X1 A
l3.
Q REMENT/AUTHORITY A protable device of high precision is needed by P&DS
to ?Znic,: so^ito.^s for ascertaining, at contractor facilities and in the
"icld, the mod-alation transfer characteristics of optical systems being
.ielop? :. ?o r many kinds of sf: , oitation equipment.
:`.'PE OF WORK TO BE DONE
Ipplied research -- engineering development
.5.
CATEGORIES OF EFFORT
MAJOR CATEGORY SUB-CATEGORIES
Optical Systems
Special Techniques and
Studies
:6.
END ITEM OR SERVICES FROM THIS CONTRACT/1VP ?OVEMENT OVER CURRENT SYSTEM. EQUIPMENT. ETC.
Production instrument--capab'^ ..;:' measuring spatial frequencies in excess of 1000
7/inm and to an accuracy, over entire system's range, of 5% in both phase
and amplitude: A considerable improvement over present techniques based on. use
of USAF 228 1/mm zest targets. instrument will w@igh less than lbs.
(cont'd)
,
17.
SUPPORTING OR RELATED CONTRACTS (Agency & Other)/COORDINATION
Liaison with AF and Navy personnel concerned with the development of optical
instrumentation revealed no similar effort in the community. When prototype
is completed, other interested agencies and components will be notified for
purposes of joint procurement.
18.
DESCRIPTION OF INTELLIGENCE REQUIREMENT AND DETAILED TECHNICAL DESCRIPTION OF PROJECT (Continue on addi-
tional page if required)
In development of complex optical viewing equipment, field evaluati.c~ the
technical monitors is vital: this instrument will provide a me.ns ~"e
checking on contractor performance and will serve to point _th ~esi ;^
fabrication flaws in the early stages -- before a redesign or retro-z'::
becomes prohibitive.
A two-pews, program was originally proposed. The first phase was an i_ csti-
gation and study of the basic parameters, as well as mechanical and T ,.:ical (cont
.9. APPROVED BY AND DATE
FORM 9p'Rve or Release
11-64
DEPUTY DIRECbIR Declass Review b i tIMA/DOD
 ? ~.~ -Approved For Rele 2001 CIA-RDP78B047 002000030008-9
16. (continued)
with a volume of approximately 0.125 cubic ft.
18. (continued)
design considerations. This phase terminated with an instrument design
and a breadboarded feasibility demonstration. No prototype rostrum nt
Was to be considered, since the contractor felt he would have provided
sufiici~ent basis for a final design on a production instrument. The
second phase was to furnish as many instruments as required, on a
fixed-price contract.
This R&D Catalog constitutes a re-direction of the original effort
to provide a different and more efficient way to test viewer response.
The present breadboard design, although perfectly suited for most
tests. has'-die disadvantage that when one wants to test film viewers
a partial dismantling of the viewer is required. This is due to the
? fact that the earlier proposed method was based on a variable contrast
target which has to be inserted in the film plane. Although this
variable target can be minimized in size, it will never be as thin
as a single sheet of film. During the period of testing the
principles and design of the proposed test equipment, a method was
discovered whereby it is possible to modify the principle upon which
the test is based to such an extent that only a target film is
necu,~: L in the fiLn plane, h i Le the
rest of the squired test
equip:::,:nt can be on the image side.
This re-direction will also call for the contractor to supply
targets that have a frequency range of one l/mm to 1,000 1/mm in
order to make the sine-wave tester as versatile as possible. The
contractor will supply single targets encompassing the full
frequer;:y ra ga. Each target will have three groups.
Is
25X1A
Grol.
One 1/mn up to and including 10 l/min
Group 2: 10 1/mm up to and including 100 1/mill
Group 3: 100 1/mm up to and including 1000 l/mn
Two consecutive targets will nave a frequency ratio of 1:1.26. Each
target will have a definite position with respect to the next lower
one, so as to enable the measurement of the phase of the transfer
function of the equipment under test.
Althou being asked to re-direct their major
effort's, Pe origins concept of a laboratory instrument will still
be pursued and they will NPIO with the original breadboard
instrument contracted for; this instrument measures MYF under
laboratory conditions.
Approved For Release 20 Y t "'CIA-RDP78B04747A00200003'
 25X1A
25X1A
R D CATALOG FORM
DATE
January 1965
1. PROJECT TITLE/CODE NAME
2. SHORT PROJECT DESCRIPTION
Sine-Wave Testing
The project involves the development of a device
Equipment
for field measurements of optical system
erformance.
3. CONTRACTOR NAME 4. LOCATION OF CONTRACTOR
5. CLASS OF CONTRACTOR
6. TYPE OF CONTRACT
R&D Company
CPIF (Cost and performance incentives)
7. FUNDS
8. REQUISITION NO.
0. BUDGET PROJECT NO.
FY 19 65
8506-65
NP-S-4
FY 19 66
10. EFFECTIVE CONTRACT DATE
(Begin . end)
11. SECURITY CLASS.
Agency Assoc.: Conf.
12/15/64+ to 12/15/65
Title - Unel.
FY 19 $
Work - Unci.
12. RESPONSIBLE DIRECTORATE/OFFICE/PROJECT OFFICER TELEPHONE EXTENSION
DDI/NPIC/P&DS, 3308 25X1 A
13. REQUIREMENT/AUTHORITY A portable device of high precision is needed by PS?DS
technical monitors for ascertaining, at contractor facilities and in the field,
the modulation transfer characteristics of optical systems being developed for
14. TYPE OF WORK TO BE DONE
Applied research -- engineering development.
15. CATEGORIES OF EFFORT
MAJOR CATEGORY
SUB-CATEGORIES
Special Techniques and
Studies
16. END ITEM OR SERVICES FROM THIS CONTRACT/IMPROVEMENT OVER CURRENT SYSTEM. EQUIPMENT. ETC.
Production instrument -- capable of measuring spatial fregu.encies in excess of
1000 1/mm and to an accuracy, over an entire system's range, of 50;fu in both phase
and amplitude: A considerable improvement over present techniques based on use
of USAF 28 1 mm.to t to g L Instrument will weigh less than 5 lbs., with a
17. SUPPORTING OR RELATED CONTRACTS (Agency & Other)/COORDINATION
Liaison with AF and Navy personnel concerned with the development of optical
instrumentation revealed no similar effort in the community. When prototype is
completed, other interested agencies and components will be notified for -
purposes of joint procurement.
18. DESCRIPTION OF INTELLIGENCE REQUIREMENT AND DETAILED TECHNICAL DESCRIPTION OF PROJECT (Continue on addi.
tional page if required)
In development of complex optical viewing equipment, field evaluation by the
technical monitors is vital: this instrument will provide a means for checking
on contractor performance and will serve to point out design and fabrication
flaws in the early stages -- before a redesign or retro-fit bem mes prohibitive.
A two-phase program has been proposed. The first phase is an investigation
and study of the basic parameters, as well as mechanical and optica] dcuirrn
ti desirm, onf;'(:
19. APPROVED BY AND DATE
OFFICE
DEPUTY DIRECTOR
DDCI
SEC ET
2001/0(3%0,3,.1 JA:RDP78 002000030008y
 Approved For *e* 2001/03/9;L- -RDP78 002000030008-9
18.
and a breadboarded feasibility demonstration. No prototype instrument will be
considered, since-the contractor feels he will have provided sufficient basis
for a final design on a production instrument. The second phase will furnish
as many instruments as required, on a fixed-price contract.
The contractor proposes, paradoxically enough, to utilize
3-bar
targets in the measurement of modulation transfer function (MTF). The unit
will be provided with a variable contrast control to determine the frequency
at which contrast becomes extinct. This thus incorporates the most useful
feature of bar-targets -- it forms the basis for yes/no judgments within fairly
close limits. The frequency/contrast data are then converted, through a
computer program, into the response which would be obtained were a sine-wave
actually used, and thence to MTF. For field measurements, it will be possible
to make manual computations of less precision but of approximately equal
validity, through nomo raphs.
g The contractor has supplied a detailed analysis
of his technique and indicates the precision of measurement, allowable errors
in contrast adjustment, problems of phase error, and the mathematical basis for
the techniques of modulation transfer measurements.
He proposes to investigate the influence of target imperfections as welt as
improvemnts in measurement techniques. He will design and fabricate the
necessary optics and optical elements, and construct a breadboard to confirm
the final design and measuring procedures. Following the necessary theoretical,
studies and experimental verifications, a basic design for the production
instrument will be developed.
Based on the design of the equipment already developed, it is estimated that
the testing device will weigh less.than five pounds and be contained in a
volume of approximately 0.125 ft3. Its transfer function will be unity over
the range of operation, the upper frequency limit of which is estimated to be
1020 lines/mm. As newer, higher-frequency targets are received, they will
be capable of insertion into this device. It will operate with a self-contained
light source which is removable for inserting the test unit into the object
plane of a projection svstem_
Approved For Release 2001103/03 : CIA-RDP78B04747A002000030008-9