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Optical lens

An optical lens and optical technology, applied in the field of optical lens, can solve problems such as the influence of lens imaging quality, achieve the effect of improving imaging quality and weakening Fresnel reflection

Active Publication Date: 2014-03-05
AAC OPTICS (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides an optical lens, which solves the technical problem in the existing lens that the Fresnel reflection on the lens affects the imaging quality of the lens

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 with 2 As shown, it is a cross-sectional view of the stacked sequence structure of two traditional black plating layers, anti-reflection and anti-reflection coatings and optical substrates. exist figure 1 In the shown structure, only the black-plated layer 20' is provided on the optical substrate 10', assuming that the real refractive index of the black-plated layer 20' is 1.5, the real refractive index of air is 1, and the real refractive index of the optical substrate 10' If the ratio is 1.6, then, it can be known through experimental measurement that when the light is incident on the black coating 20' from the air, the surface reflectance of the black coating 20' is about 4%, and the light is incident on the coating from the optical substrate 10'. When the black layer 20' is on, the surface reflectance of the black-plated l...

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Abstract

The invention provides an optical lens which comprises an optical base plate, a black coating layer and an anti-reflecting film. The optical base plate comprises an upper surface and a lower surface opposite to the upper surface. The upper surface of the optical base plate is covered with part of the black coating layer. The upper surface of the black coating layer is covered with at least part of the anti-reflecting film. Compared with the prior art, the black coating layer on the surface of the optical base plate is covered with a layer of anti-reflecting film, Fresnel reflection of the lens is greatly lowered, and accordingly the imaging quality of the lens is improved.

Description

【Technical field】 [0001] The invention relates to a lens, in particular to an optical lens in a camera. 【Background technique】 [0002] The lens is an important component in digital cameras and other similar devices. The lens determines the quality of the imaging performance. Therefore, the lens performance has become an important consideration in the design of cameras and other devices. At the same time, with the combination of lenses and portable electronic devices such as mobile phones in recent years, The requirements for lenses are getting higher and higher. [0003] Lenses usually consist of multiple elements in order to correct for optical aberrations. The lens usually has an optical substrate and a black coating covering the surface of the optical substrate. When the light reaches the black coating, most of the light is absorbed by the black coating. However, due to the Fresnel on the surface of the black coating Due to the generation of reflection, part of the lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B1/11
CPCG02B1/11G02B3/08G02B13/0015G02B27/0025
Inventor 克里斯琴·霍姆贾斯柏·奥弗斯戈德
Owner AAC OPTICS (CHANGZHOU) CO LTD