Abstract :
The Light and Vision Institute, a unique center for the demonstration of lighting principles and practices and for the solution of lighting problems, has been incorporated in the offices of the Holophane Company, Inc. This center, which is also a lecture hall, forms an integral part of the company´s research program. Its facilities permit the demonstration of all types of prismatic light control, and of the latest developments in lighting equipment and methods. They also permit the investigation and checking of mechanical and optical performance, and of field practices.