Accession Number:

AD0645730

Title:

EFFORT TO EVOLVE A METHOD OF EYE PROTECTION FROM FLASH BLINDNESS.

Descriptive Note:

Final technical rept., 1 Oct 65-31 Aug 66,

Corporate Author:

NATIONAL CASH REGISTER CO DAYTON OHIO FUNDAMENTAL RESEARCH DEPT

Personal Author(s):

• Bertelson,Robert C.
• Glanz,Kenneth D.
• McQuain,David B.
• Thomson,Francis D.

Report Date:

1966-08-31

Pagination or Media Count:

57.0

Abstract:

Photochromics of the spirobinaphthopyran classes are shown to give significant improvements over present spiropyrans when used in practical eye-protection systems. In particular, the open-state luminous transmittance of the total system was increased to 67 while still retaining the capability of closing to a luminous density of approximately 3 within 100 micro sec. The photobleaching by visible light was negligible even at intensities corresponding to a nuclear weapon range at which the aircraft and crew could not survive. The preparation of a variety of new photochromics and the necessary intermediates is described. Author

Descriptors:

• (*OPTICAL FILTERS
• *PHOTOCHROMISM)
• (*SPIRO COMPOUNDS
• PHOTOCHROMISM)
• (*OXYGEN HETEROCYCLIC COMPOUNDS
• PHOTOCHROMISM)
• POLYCYCLIC COMPOUNDS
• OPTICAL PROPERTIES
• THERMAL PROPERTIES
• SPECTROSCOPY
• NUCLEAR EXPLOSIONS
• FLASHBLINDNESS
• SHUTTERS(OPTICS)
• SYNTHESIS(CHEMISTRY)
• PHOTOCHEMICAL REACTIONS
• DYES

Subject Categories:

• Radiation and Nuclear Chemistry
• Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE