Abstract

This paper describes a new type of fluorescent lamp which is brighter than any previous fluorescent lamp. A major part of the light emitted from the phosphor is radiated through a narrow, transparent aperture. The gain is effected entirely by multiple reflections within the lamp, without requiring any additional power input. The paper presents the fundamental integral equations for interflections within the lamp and their solution in an important special case. Graphs of photometric characteristics illustrate the potentialities of aperture lamps. Data are also presented on the characteristics of experimental aperture lamps.

© 1961 Optical Society of America

On a General Theorem in Interreflection Theory with Application to the Fluorescent Lamp

M. A. Weinstein
J. Opt. Soc. Am. 51(7) 723-726 (1961)

Radiant Energies and Irradiances of Capacitor Discharge Lamps

N. A. Kuebler and L. S. Nelson
J. Opt. Soc. Am. 51(12) 1411-1416 (1961)

Radiant Flux from a Cylindrical Distributed Source*

W. R. Anderson and I. B. Berlman
J. Opt. Soc. Am. 51(11) 1229-1234 (1961)

Effects of Numerical Aperture on Contrast in Ordinary Microscopy

Harold Osterberg and Luther W. Smith
J. Opt. Soc. Am. 51(7) 709-714 (1961)

Cylindrical Dielectric Waveguide Modes*

E. Snitzer
J. Opt. Soc. Am. 51(5) 491-498 (1961)