Illumination – Light source and modifier – Ionized gas or vapor light source
Reexamination Certificate
2008-04-15
2008-04-15
O'Shea, Sandra (Department: 2875)
Illumination
Light source and modifier
Ionized gas or vapor light source
C362S268000, C362S297000, C313S634000
Reexamination Certificate
active
11222960
ABSTRACT:
In a light source device (10), relations of θ1≦Tan−1(Hd/(2f1)) and T1<H≦Hd are established, where a diameter of a circle defining an edge on the neck (121) side of a usable-light reflection area in a reflecting portion (122) of a main reflecting mirror (12) is Hd, a distance between the edge on the neck (121) side of the usable-light reflection area of the reflecting portion (122) of the main reflecting mirror (12) and an emitting center O of an emitting portion (1111) in a central axis direction of the light beam irradiated from the light source device (10) is f1, an opening diameter of a base end in an extending direction of the neck (121) is H, a diameter of sealing portion (1112, 1113) is T1, and an angle formed by lines connecting inflection points (IP1) between the emitting portions (1111) and the sealing portion (1112) with the emitting center of the emitting portion (1111) and the central axis of the light beam irradiated from the light source device (10) is θ1.
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Akiyama Koichi
Hashizume Toshiaki
Takezawa Takeshi
O'Shea Sandra
Oliff & Berridg,e PLC
Seiko Epson Corporation
Truong Bao Q.
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