RESEARCH AND DEVELOPMENT PROJECT APPROVAL REQUEST

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002400070003-6
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: May 15, 2001
• Sequence Number: 3
• Content Type: REPORT

CONFIDENTIA I
Apy pved Fin. Release 2001/08/13 : CIA-RSP''8B0*7A002400070003-6
RESEARCH AND DEVELOPMENT
PROJECT APPROVAL REQUEST
is proposed under a fixed-price contract wit
I. Identification
The development of a "Twin Light Source, Stereoscopic Light Table"
Viewers and Other Interpretation Equipment. It is specifically compre-
hended in the entry titled "Improved Viewer Components.
on rac rocuremen c e u e or Fiscal Year 1965 under Category II,
II. Objectives
This development will involve the fabrication of one prototype
twin light source, stereoscopic light table and one set of directly
reproducible manufa.cturing drawings and specifications. The project
should result in a sophisticated prototype built with proper attention
to human engineering and which will be evaluated under operational
conditions.
The main purpose for this development is to obtain a, stereo-
scopic light table that will enable the operator to vary the illumination
intensity of each of the viewing channels. The table can be tilted to
positions convenient for the operator.
III. Background
Light tables which are currently being used and which have a
support for a stereoscope do not have sufficiently large, independently
illuminated viewing areas and cannot be tilted to positions convenient
for the user. If stereo-pairs have different densities or require
differing magnifications, it has been impossible for the operator to
achieve balanced illumination. The development will allow the operator
to vary the intensity of the two independent light sources.
IV. Technical Specifications
The twin light source, stereoscopic light table will be a pro-
totype device incorporating the fo71lowing characteristics:
a. The light table mays be tilted from 00 -450.
b. For use with stereo chips, it will have an
adequate viewing area divided by a removable partition
into two independent light sources for viewing of
stereo-pairs which differ in densities or scale.
Declass Review by NIMA / DoD
Approved For Release 2001/08/13 : CIA-RDP78B04747A002400070003-
CONFIDENTIAL
GROUPI
Excluded I,
dow ngc.din and declo.a~ific
 AwovedWw ReleaseO200F~D /13 CIA- D'P78136 47AO02400070003-6
c. The light sources are to be high-intensity, cold,
cathode grids which will provide maximum screen brightness
and evenness of illumination. Maximum intensity for each
light source will be 2000 foot-lamberts.
d. The design is to incorporate a, highly reliable
dimming control by which brightness can be varied over the
entire range (2000-200 foot-lamberts) without flickering.
e. The tilting mechanism is a. captive slotted linkage
which provides continuous adjustment throughout the 450
range.
2
2001/0
Approved For Release C
ON8Jl3MLp P78BO4747AO02400070003-6