A six-piece-type optical imaging camera lens and an electronic apparatus utilizing the camera lens

Abstract

The invention relates to an optical imaging camera lens and an electronic apparatus utilizing the camera lens. The six-piece-type optical imaging camera lens of the present invention comprises six lenses from an object side to an image side. The first lens is a lens with a positive refraction rate. An image side surface of the second lens has a convex surface portion in an area nearby an optical axis. An image side surface of the fourth lens has a convex surface portion in an area nearby the optical axis. An image side surface of the fifth lens has a concave surface portion in an area nearby the optical axis. The materials of the sixth lens are plastics, and an image side surface of the sixth lens has a concave surface portion in an area nearby the optical axis. The electronic apparatus of the invention comprises a casing and an image module installed inside the casing. The image module comprises the above six-piece-type optical imaging camera lens, a lens barrel, a module backseat unit and an image sensor. According to the invention, through the control of characteristics such concave and convex curved surface arrangement, the refraction rate and/or the relevance of the ratio of parameters , the overall length of the system can be shortened under a condition that the good optical performance and the performance of system are maintained.

Description

technical field [0001] The invention relates to an optical lens, in particular to a six-piece optical imaging lens and an electronic device using the lens. Background technique [0002] In recent years, the popularity of portable electronic products such as mobile phones and digital cameras has led to the vigorous development of technologies related to image modules (mainly including optical imaging lenses, module holder units, and sensors). The trend of thinner and lighter cameras also makes the miniaturization of image modules more and more demanding. ) technological progress and size reduction, the length of the optical imaging lens loaded in the image module also needs to be shortened accordingly, but in order to avoid the decline of photographic effect and quality, good optical performance must still be taken into account when shortening the length of the optical imaging lens. [0003] The known optical imaging lenses are mostly four-piece optical imaging lenses. Due t...

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Problems solved by technology

[0003] The known optical imaging lenses are mostly four-piece optical imaging lenses. Due to the small number of lenses, the length of optical imaging lenses can be shortened. However, with the increasing demand for high-standard products, optical imaging lenses are used in The demand for picture quality and quality is rapidly increasing, and it is extremely necessary to develop products with higher specifications, such as optical imaging lenses using a six-element lens structure. However, known six-element lenses are shown in US Patent Nos. US7663814 and US8040618. The length is as high as 21mm or more, which is not conducive to the thinning of mobile phones and digital cameras, so it is extremely necessary to develop a lens with good image quality and shortened lens length

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