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:
Sep. 15, 2009
Filed:
Feb. 04, 2005
Yasuyuki Mizushima, Shizuoka, JP;
Yoshisada Nakamura, Shizuoka, JP;
Katsuya Takemasa, Shizuoka, JP;
Masataka Sato, Shizuoka, JP;
Hiroki Takahashi, Shizuoka, JP;
Yasuyuki Mizushima, Shizuoka, JP;
Yoshisada Nakamura, Shizuoka, JP;
Katsuya Takemasa, Shizuoka, JP;
Masataka Sato, Shizuoka, JP;
Hiroki Takahashi, Shizuoka, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A POF includes an inner core having a refractive index distribution and an outer core provided on periphery of the inner core. A ratio Ra/Rb of an outer diameter of the inner core to the outer core satisfies 0.67≦(Ra/Rb)≦0.87 such that an outgoing beam from an end of the POF may have a parallel area of at least 200 μm. Thus a space between the end for exiting the exit light and a light receiving device can be kept at least 200 mm without members or devices for collimating.