Light source device

Details Light source device Light source device

2008-07-16

2009-12-08

Tso, Laura (Department: 2875)

Illumination

Light source and modifier

Carbon arc type

Reexamination Certificate

active

07628511

ABSTRACT:
A light source device, including an alternating current high-pressure mercury lamp having a pair of electrodes opposite each other with a spherical light-emitting part having at least 0.15 mg/mm3of mercury and halogen at 10−6μmol/mm3to 10−2μmol/mm3, and cylindrical hermetically sealed parts extending from both ends of the light-emitting part. External leads protrude from the ends of the light-emitting part for receiving alternating current. A reflecting mirror having a concave reflecting part surrounds the light-emitting part and a cylindrical neck part. An adhesive for securing the mercury lamp and the reflecting mirror fills a periphery of the hermetically sealed parts of the mercury lamp. The distance L2(mm) from a center in between the electrodes to the adhesive is set at a value of one of 16 mm or less and 20 mm or greater.

REFERENCES:
patent: 7012374 (2006-03-01), Kurimoto et al.
patent: 2005/0213327 (2005-09-01), Kobayashi et al.
patent: 2006/0232178 (2006-10-01), Setzer et al.
patent: 2007-066742 (2007-03-01), None

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