Image trapping lens, image trapper, and image trapping unit

A lens and image technology, applied in the field of image capture lens, can solve the problem of not being suitable for reducing the total length of the image capture lens
CN1447144AInactive Publication Date: 2003-10-08KONICA MINOLTA INC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
KONICA MINOLTA INC
Publication Date
2003-10-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An image capturing lens to capture an image of an object is provided with an aperture diaphragm having an aperture through which an image is captured; a first lens having a positive refracting power, wherein both surfaces of the first lens are shaped in a convex form; a second lens having a negative refracting power, wherein an object-side surface of the second lens is shaped a concave form; and a third lens which is a meniscus lens whose convex surface faces toward the object side; wherein the aperture diaphragm, the firs lens, the second lens and the third lens are aligned in this order from the object side. <IMAGE>
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Description

Technical field

[0001] The present invention relates to an image capturing lens suitable for the optical system of a solid-state image capturing device such as a CCD type image sensor or a CMOS type image sensor. Background technique

[0002] In recent years, as the performance of image capturing devices using solid-state image capturing devices such as CCD (Charge Coupled Device) image sensors or CMOS (Complementary Metal Oxide Semiconductor) image sensors has improved and their size has decreased, respectively Cellular phones and personal computers equipped with image capturing devices are widely used.

[0003] Due to the increase in density caused by the size reduction or enhancement of functions in these cellular phones and personal computers, the size of the image capturing lens carried on the image capturing device is increasingly required to be reduced in order to realize a small image capturing device.

[0004] As an image capturing lens used in such a small image capturi...

Claims

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