LETTER (SANITIZED)

Document Type:

CREST [1]

Collection:

NGA Records (Formerly NIMA) [2]

Document Number (FOIA) /ESDN (CREST):

CIA-RDP79B00873A002000010027-3

Release Decision:

RIPPUB

Original Classification:

Document Page Count:

Document Creation Date:

December 28, 2016

Document Release Date:

November 8, 2012

Sequence Number:

Case Number:

Publication Date:

January 6, 1967

Content Type:

LETTER

File:

Attachment	Size
CIA-RDP79B00873A002000010027-3.pdf [3]	34.1 KB

Body:

Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873AO02000010027-3 g (" *,)" C".4) IV R N ~ N %e 2"' 3900 ELECTRONICS DRIVE ZIP 27604 TEL: 919 828-OS11 January 6, 1967 I hope that the enclosed "Discussion of Definitions" reaches you in time for your study and consideration before our meeting on the thirteenth. Four areas which I feel are of particular importance to both of us are the following: 1. Is the given definition of Gain (9) satisfactory? 2. Is the value of ?15% for the brightness variation practical? Can a variation of 15% be detected visually? What might be a-more meaningful requirement on bright- ness. uniformity? 3. How should the sensitivity to ambient light be specified and measured? How important are the spectral properties of the projection and ambient illumination? 4. Is the proposed figure-of-merit meaningful? Are all of the important parameters included? Should each parameter be individually weighed? MRS:ngw Product Planning - Military STAT STAT Declassified in Part - Sanitized Copy Approved for Release 2012/11/08: CIA-RDP79B00873AO02000010027-3