LETTER TO (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A000100020007-3
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: December 11, 2006
• Sequence Number: 7
• Publication Date: October 2, 1964
• Content Type: LETTER

Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3
October 2, 1964
Rosalyn Station
Arlington, Virginia 22209
Attentiont
is pleased to submit for your evaluation a Cost and
Technical roposal for the design and manufacture of one (1) or
f Low Power Wide Field Objectives for use with the
High Power Stereoviewer. Copies of our Technical
roposs are enclosed, as are copies of an outline drawing of
the proposed objective.
A fixed price contract is anticipated. Our Cost Analysis is
included as Attachment A.
Delivery of the and item is estimated at within 12 weeks after
authorization to proceed.
If you have any questions concerning this proposal, please contact
the writer directly.
GJJsbp o ogra e r c Contracts Section
IR
 Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3
Approved For Release 2006/12/11: CIA-RDP78BO477OA000100020007-3
 Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3
TECHNICAL DESCRIPTION
and
DESIGN OBJECTIVES
for
PROTOTYPES
WIDE FIELD OBJECTIVE
This lens is a low magnification, wide field microscope
objective. It is approximately parfoc4l with the hi her
magnification objectives. used with the Dyna- 25X1
Zoom Laboratory Microscope. This objective may a used
with the four position nosepiece without interfering with
the other objectives.
The real field of a microscope is equal to the field of
the eyepiece divided by the magnification of the objective.
The only way to get a significant increase in field is to
lower the magnification of the objective. Lower magnifica-
tion necessarily means increased working distance and below
magnifications of approximately 3.5X the objectives cease
to be parfocal.
The objective lens covered by this description has a prism
cluster in the lower conjugate that folds up the optical
path enabling the lens to have a shoulder-to-object distance
the same as that of the other lenses used on the DynaZoom
Microscope. This prism cluster does not invert or-revert
the image,.
The nominal magnification of this ens is 1.3X. The field
depends on the eyepiece. With the 10X Wide 25X1
Field Eyepiece, Catalog Number 31-05-60, e rea field is
approximately 1t..Omm.
No resolution requirement is specified for the prototype
lot since the primary objective is a wider field for initial
location of areas of interest. Specifications for follow-on
quantities will be determined after evaluation of the
prototype. ,,
 Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3
TECHNICAL DESCRIPTION
and
DESIGN OBJECTIVES
for
PROTOTYPES
WIDE FIELD OBJECTIVE
This lens is a low magnification, wide field microscope
objective. It is approximately parfoc4l with the hi her
magnification objectives. used with the Dyna- 25X1
Zoom Laboratory Microscope. This objective may a used
with the four position nosepiece without interfering with
the other objectives.
The real field of a microscope is equal to the field of
the eyepiece divided by the magnification of the objective.
The only way to get a significant increase in field is to
lower the magnification of the objective. Lower magnifica-
tion necessarily means increased working distance and below
magnifications of approximately 3.5X the objectives cease
to be parfocal.
The objective lens covered by this description has a prism
cluster in the lower conjugate that folds up the optical
path enabling the lens to have a shoulder-to-object distance
the same as that of the other lenses used on the DynaZoom
Microscope. This prism cluster does not invert or-revert
the image,.
The nominal magnification of this ens is 1.3X. The field
depends on the eyepiece. With the 10X Wide 25X1
Field Eyepiece, Catalog Number 31-05-60, e rea field is
approximately 1t..Omm.
No resolution requirement is specified for the prototype
lot since the primary objective is a wider field for initial
location of areas of interest. Specifications for follow-on
quantities will be determined after evaluation of the
prototype. ,,
 Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3
Approved For Release 2006/12/11: CIA-RDP78B04770A000100020007-3