prefect
Home Engineering Audio Biking Publications Photo Gallery Personal Info
WPI Technical Theatre Handbook: Fresnel Spotlights
 
  next up previous contents index
Next: Ellipsoidal Reflector Spotlights Up: Lighting Instruments Previous: Parabolic Reflector Cans   Contents   Index

Fresnel Spotlights

Fresnel spotlights (pronounced freh-nell) produce a soft-edged beam that is well-suited to washes and specials. Fresnels consist of an incandescent lamp, a mirrored parabolic reflector, and a round fresnel lens. It is this lens that lends the instrument both its name and its characteristic of having a soft focus. Fresnel spotlights come in a few sizes, the most common of which are three, six and eight inch. This figure refers to the diameter of the lens used on the instrument. Adjustments allow the focusing of the beam from spot to flood. Provisions for color frames are generally present on the front of fresnels. Figure 5.5 depicts a typical fresnel spotlight.

Figure 5.5: Typical fresnel spotlight.
\begin{figure}\psfig{file=lighting/fresnel1.eps}\end{figure}



Steve Richardson 2000-07-06

Use of information in this document implies understanding and agreement with the copyright and terms of use. Specifically, no warranty is expressed or implied regarding the accuracy of the information contained within. YOU USE THIS INFORMATION AT YOUR OWN RISK. All trademarks are property of their respective owners. You must obtain permission from the author before using the contents of The Handbook for anything other than private use.

Table of Contents

[PDF] [Whole book in PDF 5.3MB]

 
Page last modified:
Copyright © 1993-2000 prefect - All Rights Reserved.