Bringing together the contributions of eleven leading photometric experts, this practical reference guide presents common design formulas, essential rules-of-thumb, worked-out examples, and discussions of photometric instruments. Arranged for ease of reference, the twelve chapters, each of which may be read independently, are grouped into three sections. The first contains introductory material, and defines the terminology and units of measurement used in photometry, while the second covers photometric methods and procedures and provides numerous illustrative case studies. The third section contains reports from the frontiers of photometry, and includes a look at the directions future research might take. Abundantly illustrated and thoroughly referenced, this will prove invaluable to those involved in lighting design, optical physics, or applications design, and will be welcomed by workers in government-standards laboratories. The text is supplemented by a list of Web sites which offer photometry information, as well as the editors Web Companion -- an online site for discussion about the book and related issues.