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:
May. 20, 2014
Filed:
Aug. 23, 2011
Hitoshi Nakabayashi, Hyogo-ken, JP;
Akihisa Morimoto, Hyogo-ken, JP;
Takehiko Iguchi, Hyogo-ken, JP;
Hitoshi Nakabayashi, Hyogo-ken, JP;
Akihisa Morimoto, Hyogo-ken, JP;
Takehiko Iguchi, Hyogo-ken, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A light source unit is equipped with a light source having a discharge lamp and a converging mirror, and a light guide formed of a liquid core fiber which is held by a light guide holding portion. The light source and the light guide are held in a casing made of a metal, and an infrared cut filter is provided in a cylindrical light shielding body surrounding an optical path in the interior of the casing. The light shielding body forms a stray light preventing member which prevents stray light from going out of the casing, and a light quantity adjusting member is provided between an opening of the light shielding body on a light guide side and a light incident port of the light guide. The light shielding body and the light guide holding portion are thermally insulated from each other by a heat insulating material portion.