PROGRESS REPORT FOR VERSATILE, HIGH PRECISION STEREO POINT TRANSFER DEVICE

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A002200010031-3
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 11
• Document Creation Date: December 28, 2016
• Document Release Date: March 2, 2004
• Sequence Number: 31
• Publication Date: December 15, 1965
• Content Type: REPORT

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PROGRESS REPORT
For
VERSATILE, HIGH PRECISION STEREO
POINT TRANSFER DEVICE
Period Covered: November 1965
Dated: 15 December 1965
Job No.: #552, #552A
Document No.: OD-270
DECLASS REVIEW by NGA
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PROGRESS REPORT
For
VERSATILE, HIGH PRECISION STEREO
POINT TRANSFER DEVICE
Progress Report 552 & 552A for November 1965
This month we have completed miscellaneous updating
assembly work, readying 552 A # 102 for shipment and examining
some problems on the 552 optics.
OBJECTIVE HEAD
The approach to improve color in 552 optics by laser
wavelength shift and beamsplitter change has been more thoroughly
searched out. A quotation and transmission curve for reworking
beamsplitter cube has not been received although the only inter-
ested vendor has assured us that image and dot, color and trans-
mission performance can be decidedly improved over previous
beamsplitter.
During the course of adjusting the 552 optics a problem
was noticed preventing visual observation of point mark without
seriously changing point mark size. The problem appears to be
when the relay lens used to transmit target to objective lens is
working very near 1:1 and its focal length is slightly shorter
than desirable. Physical limitations surrounding the relay lens
prevent placing it at the correct location. General alternatives,
such as changing reticle size and location, and relay lens, are
being studied for solutions.
ENCODER - COUNTER SUBSYSTEM
Problems regarding encoder installation on the 552 #101
have been discussed with the customer. proposal
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was submitted to conclude work on this section. It is important
to the system delivery that approval of this proposal be received
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to complete the area will take at least (6) weeks.
At the customer meeting November 4, 1965 the following
was decided:
1. Place CMC control panel on small sloped-front cabinet mounted
on side of larger rack cabinet with arm allowing small cabinet
to rotate in horizontal plane and to be at a convenient angle
(over right hand side of joystick mechanism) for operator's
use.
2. Counter, display, synchronizer and switch panel to be placed
in 50 inch high cabinet on casters. Location of units in rack
has been decided. Layout of switch panel and associated elec-
tronic modules and connectors has also been worked out.
System checkout of the 552A #102 went smoothly, with
no unusual problems; we achieved a slight imporvement of the scanning
sychronization over the previous system. As before, the system will
be run during acceptance with test bed glass platens that will be
replaced at installation. To reduce delay between acceptance and
shipping we have arranged for equipment transportation December 7.
Work for Next Reporting Period
1) Continue debugging 552 #101.
Enclosures
1) Customer review CD-139.
2) Financial Report
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PROGRESS REPORT
or
VERSATILE, HIGh PRECISION STEREO
POINT TRANSFER DEVICE
Period Covered: October 1965
Dated: 9 November 1965
Job No.: #552, #552A
Document 1,10.: OD-266
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PROGRESS REPORT
For
VERSATILE, FIIGH PRECISION STEREO
POINT TRANSFER DEL ICE
This month we have almost completed updating assembly
motions for the 552 and 552A, with the remaining work installing
minor parts of the vacuum holddown mechanism, glass platens, and
completing objective assembly turret lens centering and field
lens installation.
OI JECTIl. E ASSE"3PLY
Work on 552 objective heads and point marking optics is
underway to settle this problem area. There has been positive
response from only one vendor who was kind enough to check the
present dichroic beam splitter and proposed that some improvement
is possible with better centering of laser reflection band about
laser wavelength, broader visible transmission region removing
transmission cut off in blue end. However, the fundamental need
of very narrow reflecting band at laser wavelength has not been
Diet. A possible alternative could be to shift laser wavelength
sufficiently out of visible spectrum, say to 1.06 micron, and
alter dichroic accordingly. However, problems of this change
would have to be searched out in further analysis and experiments
with system. Since the dot reticle would then have no reflective
means in the cube for visible light an arrangement wit!i a second
reflective surface in the cube would have to be made, possibly
like the semi-reflecting film used in the 552A. However, this
film would have to be modified to prevent reflection at laser
wavelength, and therefore, avoiding a "ghost". Aside from optical
considerations, modification of laser system will be required to
assure required output and repetition rate.
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Optical adjustment of eyepiece and objective assemblies
are nearly complete on Stereo Viewer to be shipped next.
System checkout is expected to be completed during next
reporting period. It is also expected that equipment delivery may
be possible by end of November. Customer acceptance motions
should be contemplated for that period.
ENCODE. - COUN'7TEP SUBSYSTEM
Meeting with customer has been arranged for early
November to make decisions regarding equipment needed to complete
encoder installation on 552 system.
Work for Next Reporting Period
1) Complete updating of all machines.
2) Complete debugging, acceptance work for 552A #-x,'102, prepare
to ship.
3) Continue debugging 552 #101.
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9 November 1965
552 - CD-140
WWB:rf
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1) 552 Glass Platens
What has been done to implement removal of macro-
grooves? We stated nothing has been done to improve problem
because of financial limitations of project.
2) Troubles with 552A T191 so far:
Center holddown spring edge came loose from arm,
customer cemented in place.
Short length of 9 1/2 inch film would not holddown,
apparently because of leak at read holddown and t.at it
could not be tensioned properly.
Otherwise, system is running satisfactorily and
meeting customer's needs.
3) Submitted informal quotation for image alternator and film
drive assist. We will send a letter proposal soon describing
the latter more fully, and confirming image alternator prices.
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PROGRESS REPORT
For
VERSATILE, HICRI PRECISION STEREO
POINT TRANSFER DEVICE
Period Covered:
Dated:
Job No.:
Document No.:
September 1965
12 October 1965
#552, #552A
OD-261
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PROGRESS REPORT
For
VERSATILE, HIGH PRECISION STEREO
POINT TRANSFER DEVICE
Work this month has been to update assembly of Point
Transfer Device and companion Stereo Viewers. Assembly and modi-
fication phases should be completed during next reporting period
while final optical and electrical adjustments are in progress on
machine to be shipped next, 552A #102. Because of the large
number of adjustments required, schemes and tools are being
standardized to get uniform and optimized performance in the end
products. Emphasis has been placed on procedures and equipment
that permit adjustments to take place on the machine rather than
in the laboratory so that installation and servicing requires the
least possible disassembly of a system.
OBJECTIVE.SSEMBLY
The Objective Assembly optics in the Point Transfer De-
vice are in their preliminary adjustment stage. One problem ob-
served is the blue-green color given the image by the dichroic
film in the beam splitter used to put the laser imagery on the
optical axis. Since there was great concern in the past about
the-color seen at the open gate illumination,improvements to
reduce filtering of visible light will be investigated. The
problem is to obtain sharp division between highly efficient re-
flection for the laser (infrared) light path and high transmission
with the visible light that is not reflected. Because the filter
reflects more visible red light than desirable, the image has a
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552 - OD-261
blue-green character. Opposing this goal is our problem to find
an arrangement to eliminate ghosts and image distortions. For
example, a piece of glass arranged at 45 degrees to the optical
path with a speciman dichroic coating on one side, and anti-
reflective coating on the other, may exhibit sharply defined IR
reflection properties but introduce a ghost and some astigmatism.
The cube eliminates the latter, but blurs the reflection proper-
ties. One solution may be to separate the members of the beam
splitter slightly, allowing a minimum of ghost spacing and astig-
matism, and creating a film-air interface improving IR reflecting
properties.
EiCODER-COUNT R SUBSYSTEM
In setting up the customer supplied equipment to check-
out the encoders on the Point Transfer Device, several "missing
links" were noticed that prevented mating of counter to encoder;
i.e., the switches to reset and preset, and an electronic element
to shape and amplify signals from the encoders. The switches are
a panel layout oversight and can now only be placed on another
panel, preferably near the counter electronics. The pulse shaping
'je
25 network, I electronic module 15-EL-44,
is to be customer supplied equipment. Two short comings are
noticed: power supply capability provided by the counters for
this network has less output on some of the voltage levels speci-
fied for the 15-EL-44, and module pulse output is one half speci-
fied width that counter requires for reliable operation. In spite
of these, customer tells us system will work safely and reliably.
We then are proceeding to check out encoders, install in temporary
rack, mount panel switch, and will advise customer of type and
length of cables required on system for encoder connection.
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552 - OD-261
It is suggested that the four (4) required electronic
modules be rack mounted to simplify installation and intercon-
nection, and should be forwarded to use for above work during
the next reporting period.
Work for N_x ReDortina Period
1) Complete updating assembly work of all machines.
2) Continue final adjustment and debugging 552A #102.
3) Commence final adjustment 552 #101.
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