Light source and projector

Details Light source and projector Light source and projector

2011-05-24

2011-05-24

Tran, Thuy Vinh (Department: 2821)

Optics: image projectors

Lamp control

C315S246000, C315S291000, C315S308000, C315S360000

Reexamination Certificate

active

07946715

ABSTRACT:
A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies steady energy to the first and second electrodes and an initial operation which supplies energy to the first and second electrodes with an operation different from the steady operation before performing the steady operation, a determination unit determining states of the discharge lamp and a data storage unit storing plural initial power feeding conditions provided corresponding to states of the discharge lamp as examples of the initial operation and plural steady power feeding conditions provided corresponding to the states of the discharge lamp as examples of the steady operation, in which the drive unit performs the initial operation in any one of conditions selected from the plural initial power feeding conditions according to a determination result by the determination unit and performs the steady operation in any one of conditions selected from the plural steady power feeding conditions according to a determination result by the determination unit.

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Annex to the European Search Report issued in corresponding European Patent Application No. 08 25 3141 issued Nov. 10, 2009.
Examination Results mailed Mar. 1, 2011 in European Application No. 08 253 141.9.

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