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01-13-2016

Optical Image Pick-up Lens

An optical image pick-up lens (1, 2, 3, 4) includes an aperture (ST), a first lens (L1), a second lens (L2), a third lens (L3), a fourth lens (L4), and a fifth lens (L5) in order along an optical axis (Z) from an object side toward an image side. The first lens (L1) is a positive plastic biconvex lens, the second lens (L2) is a negative plastic meniscus lens, the third lens (L3) is a positive plastic meniscus lens, the fourth lens (L4) is a positive glass meniscus lens, and the fifth lens (L5) is a plastic lens. All the surfaces (S2-S11) of the first to the fifth lenses (L1-L5) are aspheric surfaces. A refractive index of the fourth lens (L4) is greater than 1.7. The fifth lens (L5) gradually changes from negative to positive from a center, where the optical axis (Z) passes through, to an edge.

Document: EP2966487A1
Click here for the full patent text at DEPATISnet [PDF]
Published patent application
Disclosure date: 11-06-2014
Publication date: 01-13-2016
Applicant: CALIN TECHNOLOGY CO LTD, TW
Inventor: HSU SHU-CHUAN, TW


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

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