Defini�on of terms
PHOS LT
7 / 20
3. Defini�on of terms
11
9
8
10
Term
Defini�on
LED-Projector
An op�cal device that uses an internal light source (LED) to display a two-dimensional
template (gobo) on an image surface.
LED
L
ight
E
mi�ng
D
iode
Semiconductor component that emits light.
Gobo
Projec�on mo�f:
a glass template used to display logos, pa�erns, texts or images with a projector.
Projec�on lens
A projector’s most important component. One or more op�cal lenses concentrates the light,
making it possible to emit a projec�on in a targeted manner.
Focal distance
This is a measure of how strongly the lens concentrates beams of light.
Short focal length: wide cone of light.
Long focal length: narrow, concentrated cone of light
