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Plastic lens, lens module, lens injection mould

A plastic lens and lens technology, applied to lenses, household appliances, and other household appliances, can solve problems such as the center error between the center and the lens barrel

Active Publication Date: 2014-05-14
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In other words, since the contact load is generated only in the outer peripheral surface of the lens that is in contact with the lens barrel, the center of the effective surface of the lens moves toward the gate cutout except for the gate cutout of the lens, thereby causing effective Error between the center of the surface and the center of the barrel

Method used

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  • Plastic lens, lens module, lens injection mould
  • Plastic lens, lens module, lens injection mould
  • Plastic lens, lens module, lens injection mould

Examples

Experimental program
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Embodiment Construction

[0031] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] image 3 is a plan view showing a plastic lens according to an exemplary embodiment of the present invention.

[0033] Such as image 3 As shown in , the lens 100 includes an active surface 120 forming an optical surface of the lens and a flange 140 forming a peripheral portion of the lens, in which a center A of the effective surface 120 does not coincide with a center B of the flange 140 . More particularly, the center A of the active surface 120 is positioned offset from the center B of the flange 140 in a direction opposite to the gate cutout 142 . Here, the offset amount can be determined by using simulated assembly of the lens and the lens barrel or by empirical values.

[0034] Typically, the lens is formed in such a way that the center of the active surface and the center of the flange coincide with each other. If such a lens i...

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PUM

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Abstract

The invention provides a plastic lens, a lens module, a lens injection mould. The plastic lens comprises an effective surface which is the optical surface of the lens; and a flange which is the peripheral part of the lens. The center of the effective surface is not superposed by the center of the flange. In order to compensate the concentric error generated when the lens having a non-axisymmetric structure is configured on a lens barrel in advance, the center of the lens effective surface is moved and thus not superposed by the center of the lens barrel. By making the lens in a way to have a deviation between the center of the effective surface and the center of the flange, the lens is enabled to make the distortion error after as assembly minimized or even eliminated. Minimization of optical performance deterioration of the lens is taken into account.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Korean Patent Application No. 10-2010-0034871 filed in the Korean Intellectual Property Office on Apr. 15, 2010, the disclosure of which is incorporated herein by reference. technical field [0003] The invention relates to a plastic lens, a lens module and a lens injection mold. Background technique [0004] Plastic lenses are superior to glass lenses in terms of material cost and productivity. For this reason, plastic lenses are gradually applied to small camera modules used in small electronic devices including cellular phones, laptop computers, monitors, and the like. [0005] A compact camera module is formed by assembling at least one lens in a barrel in which the lens is formed of glass or plastic having excellent optical transmission characteristics. [0006] There are many and various methods of manufacturing plastic lenses used in such small camera modules. For example, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/00G02B7/02B29C45/26
CPCG02B7/021G02B7/022B29D11/00019G02B3/0012G02B1/041
Inventor 金柱澔金东振
Owner SAMSUNG ELECTRO MECHANICS CO LTD