Combined plastic lens and its manufacture method

Abstract

The invention relates to a combination plastic lens, comprising a lens body and an insertional lamina, wherein the lens body comprises a first surface and a second surface opposite to the first surface and the first surface and the second surface are used for light transmission imaging and the insertional lamina is wedged between the first surface and the second surface perpendicular to the direction of the optical axis of the lens body and the refractive index of the insertional lamina is more than that of the lens body. The combination plastic lens uses the material with high refractive index to cooperate with the material of the traditional plastic lens, the material with high refractive index is wedged into the lens body of the combination plastic lens to effectively reduce the length of the plastic lens. The invention also relates to a producing method of the combination plastic lens.

Description

technical field [0001] The invention relates to a lens, in particular to a composite plastic lens and a manufacturing method thereof. Background technique [0002] With the continuous development of camera technology, various camera devices are increasingly miniaturized and thinner, and the structure of the optical lens module, which is a key component of the camera device, is also becoming more and more complex. Plastic lenses are widely used in various optical lens modules due to their light weight and easy molding production, which has played a certain role in reducing the volume of optical lens modules and reducing the number of lenses required. [0003] At present, the materials used to make plastic lenses are usually mainly cycloolefin polymer (Cyclic Olefin Polymer, COP) and cycloolefin copolymer (Cyclic Olefin Copolymer, COC), but the refractive index of such materials is not high, usually about 1.5 about. The refractive index of the lens material is inversely prop...

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Problems solved by technology

[0003] At present, the materials used to make plastic lenses are usually mainly cycloolefin polymer (Cyclic Olefin Polymer, COP) and cycloolefin copolymer (Cyclic Olefin Copolymer, COC), but the refractive index of such materials is not high, usually about 1.5 about

The refractive index of the lens material is inversely proportional to the thickness of the lens. Therefore, the thickness of the plastic lens made of this kind of material is still relatively thick, which cannot meet the increasing thinning and thinning of the plastic lens by the optical lens module to some extent. need

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