AN APPROACH TO AN APPROVED PROJECTION SYSTEM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP79B00873A001600020001-5
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: August 30, 2012
• Sequence Number: 1
• Publication Date: April 1, 1963
• Content Type: LETTER

Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873AO01600020001-5
1 April 1963
f GC 25X1
C #4908
Reference: Verbal Request for Quotation
Subject: An Approach to an Approved
ection System.
P Register No. 3-1303
xequest, we have originated two one-page proposals
which describe our approach to the problems of producing a cool, high intensity
film image projector and the associated viewin screen having a maximum (1000
foot Lambert) luminous radiance. Although was initially asked to suggest
an approach only to the projector problem, we believe that a proper solution
to producing an optimum image lies in an integrated system which necessarily
involves the response of the screen to the projected image.
Both proposals involve the use of some techniques which are not in general use
since we believe that conventional means for production of intense high reso-
lution images have been exhaustively pursued. These program are estimated to
occupy about six months time for three engineers with technical support.
is qualified to pursue the suggested programs and will welcome any questions
you may have.
Sincerely,
25X1
25X1
WAS:jw
Enclosures (2)
Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873AO01600020001-5
 Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873A001600020001-5
No. 3-1303 25X1
I April 1963
APPAOA THE DESIGN OF A COOL 1110H SITY F LM PRODS
The purpose of this approach is to provide a source of illumination for one of
the presently available film movements or carriages used for film viewing,
theodolite reading, ballistic camera film reading, etc. and, at the same time,
accommodate the use of advanced image presentation techniques provided by con-
trol of the screen characteristics.
The most promising light source is that provided by the Xenon arc or Xenon
mercury are. The newest adaptations provide useable concentrated illumination,
of up to 4000 lumens for 2000 watts input, under steady state conditions. Under
pulse operation, considerable increases in light intensity can be obtained so
long as the watt second capability is not exceeded. Three of these lamps pulsed
by three phase excitation and extinguished in turn by their own magnetic field
to provide a square wave cut off will provide a unique high intensity source
divided into the three primary colors. Squal intensity time shared pulses of
each primary color will produce an effective white light by depending on the
chemilusinescence of the eye to retain the prior color. Variations of the
primary intensities will produce color changes as desired.
Removal of the heat is simply accomplished with moving air. The optical systems
are so arranged as to prevent the direct radiation of the lamp from falling on
the film. All energy is reflected to the film by mirrors coated to allow the
unwanted infrared radiation to pass through and provide only the useful UV and
visible rays. Careful attention to the use of the U V spectrum will permit
maximum excitation of the screen material.
Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873A001600020001-5
 Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873AO01600020001-5
No. 3-1303 25X1
1 April 1963
AN APPROACH TO THE DBSIGN OF A H GH ENSITY HIGH 1U2LUTW1
The primary purpose of this approach is to transfer the maximum amount of infor-
mation from a photographic image to the mind of an observer in as short a time
as possible. The amount of detail assimilated is dependent upon the image
resolution, but resolution is essentially an energy phenomenon and is strictly
subjective since it is connected with the sensitive properties of the observer.
CSC proposes to provide a screen which can be controlled to suit a maximum m mn-
ber of an observer's sensitivities.
Such a screen would be transparent and would reflect minimum light in a lighted
room. It should have the property of extremely short persistence fluorescence
when struck by light of limited wavelength from one direction. Multiple trans-
parent coatings similar to cathode ray tube phosphors can produce the chromatic
range. For black and white film projection, a screen of this type will produce
a color separation of density values in addition to a gray scale to accommodate
the observer's sensitivity to color as well as contrast. When observed as a
black and white screen the intensity may be raised to the dazzling point where
visual acuity begins to decrease. At this point color separation will provide
additional acuity in that chromatic aberration is minimized and the observer's
particular color sensitivity can be accommodated.
Illumination of the screen is possible in several ways; one, the steady state
illumination from an arc source; two, by pulsed are so the fluorescence can be
observed during decay in narrow color bands to minimize solarization and dazzle;
and three, by time shared millisecond pulses of light of alternate colors.
These techniques also lend themselves to the simulation of three dimensional
images from two dimensional film by subliminal stimulation. If the retina of
one eye receives a brighter image or a different colored image than the other
eye, moving objects or objects which are changing in color stand out in the
third dimension. This faculty accommodates a third important observer sensi-
tivity in using his ability to detect perspective.
In the development of this system the control of the source of illumination is
necessary to provide an integrated system. With reasonable success the resul-
tant images will act on more of the observer's sensitivities and convey more
information per unit of time than present conventional methods. Experiments
will be required to eliminate any adverse physiological and psychological
effects.
Declassified in Part - Sanitized Copy Approved for Release 2012/08/30: CIA-RDP79B00873AO01600020001-5