[PROPOSED TASK II-5 'OPTICAL MECHANICAL PROPERTIES OF REAR PROJECTOR LIGHT SOURCES'

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002900020025-3
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 1
• Document Creation Date: December 28, 2016
• Document Release Date: August 30, 2005
• Sequence Number: 25
• Publication Date: January 27, 1965
• Content Type: LETTER

Approved Forease 2005/11/21: CIA-RDP78B0477S2900020025-
14
Dear John,
Re: Proposed Task 11-5 "Optical Mechanical Properties
of Rear Projector Light Sources"
Thank you for the copy of the final report of the
STAT I I"Projector Study." The report will e of
considerable value if you decide to proceed with the
proposed task. The data on lamp life will be directly
applicable.
Using the generalized approach derived in the
STAT technical note "Generalized Condensing ystern
we may be able to obtain a~theoretical estimate of the
effect of lamp manufacturing tolerances on performance of
a projection system. Since the study was
principally concerned with condenser optics, we may need
to modify their approach somewhat in order to study the
? effect of lamp quality.
Best regards.
Declass Review by NGA.
Approved For Release 2005/11/21: CIA-RDP78BO477OA002900020025-3