FOREWORD: In the early years, the Illuminating Engineering
Society, founded in 1906, waited 41 years before issuing the first
edition of the Handbook. Technical information was not lacking but
the preferred method of publication were Transactions of the
Society, not as widely disseminated or conveniently available to as
broad an interested audience as a Handbook. Between the 1st edition
in 1947 and this 10th Edition there have been revisions in 1952,
1959, 1966, 1972, 1981, 1984 (partial), 1987 (partial), 1993, and
In each book an ever-broadening range of technologies,
procedures, and design issues has been addressed to ensure that the
Handbook is the principal source for lighting knowledge. The
emphasis in each edition has changed to reflect current application
trends and needs of the many and varied readership. Some editions
placed more importance on quantitative issues; in more recent
years, quality earned important recognition.
The Tenth Edition Handbook has taken cognizance of several
issues that impact designs of today: energy limits, the spectral
effects of light on perception and visual performance, and the need
for flexibility in an illumination determination procedure that
takes into account factors such as observer age, task reflectance,
and task importance in its illumination determination procedure.
This book will return to a more "analytical" approach to
recommendations and allow the individual committees' publications,
such as Recommended Practices, Design Guides, and Technical
Memoranda to fully address appropriate and specific design details
for a given application.
The professional editorial team brought talent and discipline to
the project. This was not a simple revision to an existing book but
an entirely new approach. David DiLaura, Kevin Houser, Richard
Mistrick, and Gary Steffy have earned our appreciation for their
contributions in developing new material, editing, and designing
the overall appearance of the book.
The Lighting Handbook represents the most important reference
document in the lighting profession. It is one by which the Society
accomplishes its mission: To improve the lighted environment by
bringing together those with lighting knowledge and by translating
that knowledge into actions that benefit the public. We hope that
you, the reader, will find the Tenth Edition your principal
reference source for lighting information.