| US 7,542,208 B2 | ||
| Light collecting device and light collecting mirror | ||
| Xin Gao, Hamamatsu (Japan); Hiroyuki Ohashi, Hamamatsu (Japan); and Kazunori Shinoda, Hamamatsu (Japan) | ||
| Assigned to Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka (Japan) | ||
| Appl. No. 11/578,067 PCT Filed Apr. 13, 2005, PCT No. PCT/JP2005/007156 § 371(c)(1), (2), (4) Date Jul. 31, 2007, PCT Pub. No. WO2005/101096, PCT Pub. Date Oct. 27, 2005. |
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| Claims priority of application No. 2004-118298 (JP), filed on Apr. 13, 2004. | ||
| Prior Publication US 2007/0279754 A1, Dec. 06, 2007 | ||
| Int. Cl. G02B 27/10 (2006.01); G02B 5/10 (2006.01) | ||
| U.S. Cl. 359—619 [359/867] | 15 Claims |
| 1. A beam-condensing unit comprising:
a first light source that outputs a plurality of first light fluxes arrayed along a first direction;
a second light source that outputs a plurality of second light fluxes arrayed along the first direction; and
a condenser mirror having first and second optical plates that intersect with each other,
wherein the first optical plate includes a plurality of first reflecting portions that are arrayed along the first direction
and reflect the plurality of first light fluxes, respectively, and
the second optical plate includes a plurality of second reflecting portions that are arrayed along the first direction alternately
with the first reflecting portions and reflect the plurality of second light fluxes, respectively; and
a third light source that outputs a plurality of third light fluxes arrayed along the first direction,
wherein the condenser mirror has a plurality of light passing portions that are arrayed along the first direction and allow
the plurality of third light fluxes to pass, respectively,
the first reflecting portions, the second reflecting portions, and the light passing portions are repeatedly arrayed along
the first direction in a fixed order,
the first optical plate has one or more first opening portions arrayed along the first direction alternately with the first
reflecting portions,
the second optical plate has one or more second opening portions arrayed along the first direction alternately with the second
reflecting portions,
one or more of the first reflecting portions penetrate through the second opening portions, and one or more of the second
reflecting portions penetrate through the first opening portions, and
the first and second opening portions include gaps formed between the first and second reflecting portions as the light passing
portions.
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