| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical lens system improved in alignment precision between lenses, and to eliminate the significant deviation of an optical axis between the lenses. SOLUTION: The optical lens is equipped with a barrel, a 1st lens, and a 2nd lens. The barrel has a light introducing port and housing space, and the housing space continues to the light introducing port. The 1st lens is arranged in the housing space and partially exposed through the light introducing port. The 1st lens has a 1st annular conical surface at its outer frame part. The 2nd lens is arranged in the housing space, and fit by the 1st lens. The 2nd lens has a 2nd annular conical surface at its outer frame part, and the 1st annular conical surface is fit by the 2nd annular conical surface. As a result, the optical lens has the excellent alignment precision and assembly efficiency. COPYRIGHT: (C)2006,JPO&NCIPI
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