发明名称 IMAGING LENS UNIT AND CAMERA MODULE
摘要 PROBLEM TO BE SOLVED: To provide an imaging lens unit which can shorten an optical length and can capture a high quality image, and to provide a camera module. SOLUTION: The imaging lens unit 10 includes, from an object side, an aperture diaphragm 11, a first lens 12, and a second lens 13 placed on an image side of the first lens 12. The first lens 12 is a positive meniscus lens convex toward the object side and at least one side of the first lens 12 has an aspherical surface. The second lens 13 is a negative meniscus lens convex toward the image side, and at least one side of the second lens 13 has an aspherical surface. Further, a maximum value of an angle between a tangent coming into contact with a surface on the image side of the second lens 13 and a normal to an optical axis is in a range of 65 to 90 degrees within an effective diameter of the second lens 13. COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2009145479(A) 申请公布日期 2009.07.02
申请号 JP20070320915 申请日期 2007.12.12
申请人 HITACHI MAXELL LTD 发明人 NAKANISHI MASAKI;MINAGAWA YOSHIAKI
分类号 G02B13/00;G02B13/18 主分类号 G02B13/00
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