LEUKOS, The Journal of the Illuminating Engineering Society of North America is an online, quaterly journal edited by David L. Dilaura, a well-known, highly respected member of the lighting community. David teaches Illuminating Engineering at the University of Colorado, Boulder.

LEUKOS is an international venue for the publication of technical developments of current interest or of lasting importance in illuminating engineering and lighting design. With LEUKOS, the traditional scope of the Society's journal has been broadened to include 5 types of publications: Scientific research results; Engineering developments; Technical aspects of lighting applications; Tutorial articles or critical reviews; and Brief communications.

The scope of LEUKOS, defined by the five types of articles listed above, is meant to provide the international lighting community with information that is topical as well as archival; in disciplines both directly and indirectly related to lighting.

Each issue of LEUKOS contains an editorial and a section devoted to letters to the editor. The primary distribution mechanism for LEUKOS is the Internet. Four issues will be produced annually, each in PDF format and accessible to general subscribers at www.iesna.org. These issues of LEUKOS are downloadable, searchable and printable.

In addition, a printed edition of all four Internet issues will be produced at the end of each publication year, and provided to archival subscribers as part of their subscription fee. IESNA members, who receive free access to LEUKOS as a benefit of membership, may purchase this compilation issue at a cost of $25.00. The four annual Internet issues make information available to general subscribers in a timely fashion; the printed compilation of all four issues provides a record for libraries and other institutions with archival requirements.