Invention Grant
US08526128B2 Image-forming lens, and camera device and portable information terminal device with the image-forming lens 有权
图像形成透镜,以及具有图像形成透镜的相机装置和便携式信息终端装置

Image-forming lens, and camera device and portable information terminal device with the image-forming lens
Abstract:
An image-forming lens includes: from an object side to an image side in order, a first group with a positive refractive power which includes less than or equal to five lens elements of two negative lenses and equal to or more than two positive lenses and in which a first lens element on a most object side is a negative meniscus lens a convex surface of which faces the object side; an aperture; and a second group with a positive refractive power which includes less than or equal to five lens elements including at least one cemented lens of a positive lens and a negative lens; wherein each of the first group and the second group shifts independently to perform focusing to a limited object distance, and an interval between the first lens element and a second lens element close to a surface on the image side of the first lens element: d11-2 and an interval between the second lens element and a third lens element close to a surface on the image side of the second lens element: d12-3 satisfy Conditional Expression A: 0.0
Information query
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