Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Efficient averaging spheres for visible and ultraviolet wavelengths

Not Accessible

Your library or personal account may give you access

Abstract

On the basis of a theoretical analysis that identifies the design criteria for optimization of efficiency, an averaging sphere with a barium–sulfate target was constructed that has an efficiency of 80–90% in the visible. In spite of the decreased reflectance of the sphere walls in the uv, this sphere is still 30% efficient at 300 nm and, thus, can be used for near-uv work. For applications below 300 nm, a cell containing a fluorescent dye is placed inside the sphere in order to shift the incident radiation into the longer wavelength region in which the reflectance of the sphere walls is higher. The use of this fluorescent wavelength converter, which was designed so that the sphere remains usable in the visible, resulted in a sphere efficiency of about 20% in the region between 200 nm and 300 nm and 50% in the visible. The averaging properties of these spheres were found to be adequate for high-accuracy photometric measurements.

© 1975 Optical Society of America

Full Article  |  PDF Article
More Like This
Averaging sphere for ultraviolet, visible, and near infrared wavelengths: a highly effective design

K. L. Eckerle, W. H. Venable, and V. R. Weidner
Appl. Opt. 15(3) 703-707 (1976)

Averaging spheres without target

K. D. Mielenz and K. L. Eckerle
Appl. Opt. 14(7) 1649-1651 (1975)

Integrating-Sphere Fluorescence Cells: Instrumental Errors in Fluorescence Lifetimes and Intensities

G. I. Senum and S. E. Schwartz
Appl. Opt. 14(5) 1143-1149 (1975)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (25)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved