Light source device
First Claim
1. Light source device comprising:
- a discharge lamp including a discharge space containing at least 0.15 mg mercury per cubic millimeter of the volume of the discharge space, a pair of main discharge electrodes positioned opposite one another to generate a main discharge, wherein the electrodes are spaced from each other a distance less than or equal to 2.5 mm, and an auxiliary electrode positioned such that the auxiliary electrode does not come into contact with the discharge space for the main discharge;
a feed circuit for providing a discharge current to the main discharge electrodes for the main discharge; and
a starter which produces a high voltage between one of the main discharge electrodes and the auxiliary discharge electrode;
wherein the starter is adapted to produce a voltage two to five times the voltage necessary to create a main discharge in the lamp when at room temperature.
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Accused Products
Abstract
Light source device which includes a discharge lamp which contains at least 0.15 mg mercury per cubic millimeter of the volume of the discharge space, a pair of electrodes opposite one another to create the main discharge and spaced a distance from one another of less than or equal to 2.5 mm, and an auxiliary electrode arranged such that it does not come into contact with the discharge space for the main discharge. The light source device further including a feed circuit to feed the discharge current to the electrodes for the main discharge, and a starter which produces a high voltage between one of the electrodes of the two electrodes for the main discharge and the auxiliary discharge, such that the starter produces a voltage two to five times as high as the voltage necessary for starting the main discharge in the lamp at the room temperature state.
21 Citations
6 Claims
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1. Light source device comprising:
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a discharge lamp including a discharge space containing at least 0.15 mg mercury per cubic millimeter of the volume of the discharge space, a pair of main discharge electrodes positioned opposite one another to generate a main discharge, wherein the electrodes are spaced from each other a distance less than or equal to 2.5 mm, and an auxiliary electrode positioned such that the auxiliary electrode does not come into contact with the discharge space for the main discharge;
a feed circuit for providing a discharge current to the main discharge electrodes for the main discharge; and
a starter which produces a high voltage between one of the main discharge electrodes and the auxiliary discharge electrode;
wherein the starter is adapted to produce a voltage two to five times the voltage necessary to create a main discharge in the lamp when at room temperature.- View Dependent Claims (2, 3, 4, 5, 6)
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Specification