Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Myung-bok Lee0
Hae-sung Kim0
Jin-seung Sohn0
Mee-suk Jung0
Eun-hyoung Cho0
Date of Patent
January 23, 2007
0Patent Application Number
108715670
Date Filed
June 21, 2004
0Patent Primary Examiner
Patent abstract
Provided is an objective optical system employing a gradient index (GRIN) lens. A refractive index of the GRIN lens is changed in an axial direction and a direction perpendicular to the axial direction. The GRIN lens has a refractive index n satisfying the following equation:
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