Accession Number:

AD0429320

Title:

SPECIAL REPORT ON AN INTEGRATING SPHERE LIGHT SOURCE,

Descriptive Note:

Corporate Author:

IIT RESEARCH INST CHICAGO ILL

Report Date:

1963-03-01

Pagination or Media Count:

35.0

Abstract:

Work performed at Armour Research Foundation to develop a light source having a uniform Lambertian surface. A uniform Lambertian surface has these two important properties 1 the intensity of the light emitted by a point on the surface is equal for all points on the surface, and 2 the intensity of light emitted from an infinitesimal area in a particular direction varies as cos theta, where theta is the angle between the normal to the emitting surface and the direction of measurement. The preliminary systems investigated, which did not satisfy the design requirements, are described. On the basis of this investigation it was concluded that the utilization of an integrating sphere system offered the most feasible approach to this task. The characteristics of the final integrating sphere system are described in detail. This system has several modes of operation. Uniformity and goniometric measurements were performed to determine the characteristics for the various system arrangements. This data is presented in graphical and tabular form. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE