CIA-RDP79B00873A002000010075-0.pdf

Deciassified in Part - Sanitized oe for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0 wy JY 25X1 mo) “QO Ss a, = A {CORNING GLASS WORKS ELECTRO-OPTICS LABORATORY RALEIGH, NORTH CAROLINA IMPROVED SCREEN FOR REAR PROJECTION VIEWERS Technical Report No. - 16 Date - December 12, 1966 Period Covered - November 14, 1966 to December 12, 1966 Chia EN LEE 2 a pe WisWieaeule “ s re AO AR erry wie. cet U 7) hag J { The gone aTien ASPC Dring C9 STATES, CrTKIG Declassified in Part - Sanitized Copy Approved for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0

for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0 Declassified in Part - Sanitized Copy Approved cota , CO OOWIFIBIEWTIAL =O “g ABSTRACT This report summarizes the light scattering properties of many more Corning Glass Works' materials. Of the 65 samples measured, 5 were found which have sufficiently good optical properties to warrant further investigations. Prototype rear projection screens measuring 3" x 3" have been fabricated from Fotoform glass. Work is continuing on lenticular Frotoforn” glass and glasses with metallic particles. TOW OF Wich in Any AMY itas PEEON 18 PronipiTED orn …

Declassified in Part - Sanitized Copy Approved for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0 ao OO LURPINERHIAL C) TECHNICAL REPORT NO. 16 I. Materials A. Glass Ceramics Since the last reporting period we have measured an additional 65 samples of glass-ceramic materials of which some 5 different samples look promising. These samples are AU-3A, AU-4A, and AU-6A, and particularly AS-4A and AS-9A. The first group, the AU series, have particle concentrations somewhat greater than optimum making them less efficient; however, the scattering appears to be nearly independent of wavelength wh…

ante ci, RES PMR ROT FB AB, Declassified in Part - Sanitized Copy Approved f for Release 2012/1 1/08 : CIA-RDP79B00873A002000010075-0 Y Nara ee eengene we F screen materials. This stray light also has the effect of causing the brightness variation to appear very large. Several techniques of making thin layers of glass-ceramic material are presently being investigated. Some of these techniques will be used to make 12" x 12" prototype rear projection screens for detailed visual evaluation. B. Fotoforn®) Glass Investigations of the optical properties of this material are con- tinuing; however, so…

Declassified in Part - Sanitized Copy Approved for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0 4 -, Table A-1 CR iT pee Summary of the Optical Properties of Some Corning Glass Works'Materials Sample *s "45 "spec Axial Brightness Variation Thickness Code % % % Gain 445° (%) (mm) AH-2A 50. 18. 0.0 1.3 3.2 0.965 AH-2D 50. « 18. 0.0 1.4 7.2 0.991 AJ-1A 33. 12. 0.0 0.9 en: 0.585 AJ-1B 18. 6.3 - 0.0 0.4 16, 1.119 AJ-3A 63. 46. 35. 56. 97. 0.356 AJ-4A 93. 43. 1. 6. 49. 0.483 AJ-4B 58. 23. 0.1 1.8 ll. 0.016 AJ-5A 56. 22. 0.1 1.6 7.2 0.559 AJ-5B 35. 12. 0.0 0.9 5.3 1.016 AJ-6A 51. 18. 0.4 1.3 3…

Declassified in Part - Sanitized Copy Approved for Release 2012/1 1/08 : CIA- RDP79B00873A002000010075- 0 t / Table A-1 Continued:{ eens i ts “spec ne veaetten en ° ° ° +45° (%) AS-1A 90. 42. 1.9 7.5 . 57. 0.33 AS-1B 75. 30. 1.4 2.6 15. 1.016 AS-2A 82. 40, 7.7 16. 80. .0.33 AS-2B 75,6 31. 2.3 "248 21. 1.003 AS-3A 73. 46.. 23. 12. 80. 0.33 AS-3B 86. 42. 6.6 5.2 43, ‘0.991 AS-4A 78. 29. 1.2 2.2 7.5 0.33 AS-4B 47, 20. 0.8 1.4 2.5 0.991 AS=5A 73. 52. 20. 29. 93. 0.33 AS~5B 86. 52. 8.2. 8.8 66. 0.991 AS-6A 69. 25. 1.8 1.9 5.7 0.33 AS-6B 34. 14, - 0.5 1.0 2.4 0.991 AS-7A 87. 42. 2.8 5.4 46. 0.336 AS…

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ANE CAP Ansed il fh Declassified in Part - Sanitized Copy Approved for Release 2012/1 1/08 : CIA-RDP79B00873A002000010075-0 MAUVE (NU S.A, KEUFFEL & ESSER CO. 10 X 10 TO THE CENTIMETER 46 1513 tLe ,i GM a bes 14am. 2 4 6 8 10 12 14 16 18 20 22.24 26 28 30 32 34 36 Declassified in Part - Sanitized Copy Approved for Release 2012/11/08 : CIA-RDP79B00873A002000010075-0