The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2010
Filed:
Oct. 31, 2006
Applicants:
Shigekazu Takagi, Shimosuwa, JP;
Yutaka Takada, Minami-Minowa, JP;
Satoshi Fujii, Sanda, JP;
Inventors:
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 25/50 (2006.01); H01J 23/36 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a projector using a light source device that is rapidly and reliably turned on and can stably obtain a desired amount of light and a method of rapidly and reliably turning on a light source device of a projector. A power control unit adjusts the amplification factor of an amplifying unit for microwaves such that microwave power having a pulse form that is higher than the microwave power radiated to keep an electrodeless lamp emitting light is radiated to turn on the electrodeless lamp. Therefore, a microwave having predetermined power is radiated to the electrodeless lamp at once.