Lamp driver scheme

Details Lamp driver scheme Lamp driver scheme

1988-02-22

1989-07-18

Gellner, Michael L.

G03B 4100

Patent

active

048497770

ABSTRACT:
A system for projecting a spot of radiant energy includes a lamp for projecting a light spot onto a surface and includes means for providing a selection of differently sized spots. Drive means moves the light spot relative to the surface and is capable of moving the light spot at a maximum given velocity which is the same for all of the differently sized spots. Velocity output means produces a velocity signal representing the velocity of the spot and a normalized velocity signal is produced by dividing the volocity signal by the maximum given velocity. Each differently sized spot is assigned a different lamp command voltage signal and a selected one of the lamp command voltage signals is multiplied by the normalized velocity signal to produce a resultant lamp command voltage signal which energizes the lamp.

REFERENCES:
patent: 3330182 (1967-07-01), Gerber et al.
patent: 4170745 (1979-10-01), Rich et al.
patent: 4760412 (1988-07-01), Murzyn

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