Light source apparatus, discharge lamp driving method, and projector

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9642229
APP PUB NO 20140226135A1
SERIAL NO

14257427

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In at least one embodiment, a light source apparatus includes a discharge lamp with a pair of electrodes and a driving unit that supplies a driving current to the pair of electrodes. The driving unit includes an AC supplier that supplies an alternating current to the pair of electrodes and a DC supplier that supplies a direct current to the pair of electrodes. The AC supplier is configured to alternately repeat an AC supply section in which the alternating current is supplied and an AC stop section in which the supply of the alternating current is stopped. The DC supplier is configured to supply the direct current during a period corresponding to the AC stop section. A frequency of the direct current is not lower than 10 Hz and not higher than 1 kHz.

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First Claim

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Patent Owner(s)

  • SEIKO EPSON CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kito, Satoshi Chino, JP 31 290
Suzuki, Junichi Chino, JP 206 2395

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