Accession Number:

AD0287880

Title:

A PORTABLE LOW-LEVEL LIGHTMETER. 2. MODIFIED LOW-LEVEL LIGHTMETER FOR THE NEAR INFRARED

Descriptive Note:

Corporate Author:

AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1962-08-01

Pagination or Media Count:

14.0

Abstract:

Experiments to achieve a higher sensitivity in the low-level lightmeter for operation with a narrow bandwidth monochromator in near infrared observations was advanced by an experimental photomultiplier tube. This tube produces a senitivity approximately 5 times greater than was possble with previous lightmeters. Recommendations are made for frther increasing effectiveness in use of the low-level lightmeter by incorporating a new 16-stage near infrared photomultiplier tube with a very large aperture and short-focal- length lens.

Subject Categories:

  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE