A plastic optical lens mold structure with adjustable eccentricity

Abstract

The invention relates to a plastic optical lens mould structure capable of adjusting core shift. The plastic optical lens mould structure comprises a front template and a rear template, wherein a cavity is formed between the front template and the rear template and is internally provided with a main insert; the cavity is connected with a front template hole and a rear template hole; the front template hole is internally provided with a mould core of a front mould and the rear template hole is internally provided with a mould core of a rear mould; an upper molding part is arranged at the end part of the mould core of the front mould and a lower molding part is arranged on the mould core of the rear mould; the main insert is provided with a mould cavity; and a gasket adjusting structure is arranged between the cavity and the main insert and can be used for adjusting the thickness of a gasket so that the core shift of a lens in each mould is in a designed specification value range. By adopting the mould structure, the core shift of the lens in each hole is in the designed specification value range and the core shift stability of each lens injection molding hole in a production process is guaranteed; and the coaxiality repeatability between the front mould and the rear mould can be guaranteed when the front mould and the rear mould are closed by adopting one-step simultaneous processing, and the core shift precision of each hole is guaranteed.

Description

【Technical field】 [0001] The invention relates to a plastic optical lens mold structure, in particular to a plastic optical lens mold structure with adjustable eccentricity. 【Background technique】 [0002] The traditional plastic lens mold structure is the mold core in the bushing or the overall mold core. Due to the error of processing and matching, the structure of the mold core in the bushing can no longer meet the requirements of high eccentricity precision for batch stable production; the overall mold core structure cannot Applied to large-diameter plastic lenses, otherwise there will be poor lens release. With the continuous increase of mobile phone camera functions, the pixels of mobile phone lenses are also gradually increasing. Currently, the pixels of mobile phone lenses sold on the market have reached 8 million and 13 million pixels, and there may be demand for higher pixel lenses in the future. [0003] However, with the increase of lens pixels, the requirements...

AI Technical Summary

Problems solved by technology

At present, the lens eccentricity accuracy guaranteed by the industry is 2μ, which is very difficult for the existing mold structure, and it cannot be realized within 1.5μ (it is only accidental, and it is impossible to achieve multi-cavity mass production)

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