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:
Mar. 25, 2014
Filed:
Mar. 30, 2009
Yoshifumi Nishimura, Tokyo, JP;
Takayuki Okada, Tokyo, JP;
Yoshifumi Nishimura, Tokyo, JP;
Takayuki Okada, Tokyo, JP;
NEC Display Solutions, Ltd., Tokyo, JP;
Abstract
It is possible to reliably prevent dust particles from becoming attached to optical components and it is also possible to suppress temperature rises in optical components. A projection type display device according to the present invention includes a plurality of optical components (, and so on), a hollow structure (, or the like), and an air blow source (, or the like). The plurality of optical components are provided along the optical axis direction of light emitted from a light source. The hollow structure includes optical components () that are to be protected from the attachment of dust particles to optical components among the plurality of optical components, and forms an enclosed space separated from the surroundings. Then, the source that blows air is provided in the inside of the enclosed space to circulate the internal air for cooling targets.