发明名称 |
Light unit with improved heat dissipation |
摘要 |
A lamp unit (3) for use with digital micromirror devices has a direct current short arc discharge lamp (1) in which at least 0.15 mg/mm3 of mercury is sealed. A short focal length, elliptical reflector mirror (2) both covers the discharge lamp (1) and positions the axis of radiation roughly in line with the long axis of the discharge lamp, such that the short arc discharge lamp (1) is placed with the cathode (14) in a front opening of the reflector mirror (2)
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申请公布号 |
US6570303(B2) |
申请公布日期 |
2003.05.27 |
申请号 |
US20010804310 |
申请日期 |
2001.03.13 |
申请人 |
USHIODENKI KABUSHIKI KAISHA |
发明人 |
OKAZAKI YOSHIO |
分类号 |
G02B27/18;F21V29/00;G02B27/00;G02B27/09;G03B21/14;H01J61/20;(IPC1-7):H01J61/00 |
主分类号 |
G02B27/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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