TOPIC:

L6-56: FRESNEL SPOTLIGHT 10 years 4 months ago #896

zzfixk21
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ID Code: L6-56
Purpose: Illustrate how Fresnel lenses are used in theatre spotlights.
Description: The lens of this spotlight has a very short focal length, yet is quite thin and light because it is a Fresnel lens. The bulb in the spotlight can be moved along the optic axis to change the size of the area lit by the spotlight.
Availability: Available