Five-lens type image lens and electronic device applying same

Abstract

The invention discloses a five-lens type image lens and an electronic device applying the same. The image lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens made of plastic material from an object side to an image side. The first lens has a positive reflective index and a convex surface located at the object side; the second lens has a negative reflective index and a concave surface located at the image side; the third lens is a biconvex lens; the fourth lens is a meniscus lens and has a convex surface located at the image side; and the fifth lens is provided with a concave surface which is located at the image side and is adjacent to the region of an optical axis. The lens is made of the plastic material, therefore, the requirements for light weight and low manufacturing cost can be met; and due to the design of the five-lens type image lens, the luminous flux can be increased, the signal to noise ratio and the light absorption angle can be increased, and the field angle can be amplified, therefore, the five-lens type image lens can maintain high optical quality and meet the practical requirement.

Description

technical field [0001] The invention relates to an optical lens, in particular to a five-chip image lens and an electronic device using the lens. Background technique [0002] In recent years, various portable electronic products have built-in optical imaging lenses and image sensing elements to take pictures and take pictures. Considering the demand for portable electronic products to be lighter and lighter, when developing and improving this type of lens, in addition to continuously improving its optical performance, it must also meet the requirements of small size and light weight. Taking mobile phones with camera or video functions as an example, the current development trend is to continuously improve the performance of the lens, such as high image quality, low electronic noise, and wide angle, so as to provide better quality of use. Megapixels are the mainstream of the current resolution specifications, but in order to meet the consumer requirements of high quality an...

AI Technical Summary

Problems solved by technology

[0005] Although the image lenses formed by the above-mentioned four-lens combination or five-lens combination are all designed to provide higher image quality, the optical parameters of each lens combined to form the lens have different designs, resulting in The combined lens may have a significant improvement in certain optical properties, but at the same time there are some sacrificed optical properties. In order to meet the changing trend of image sensor chips and consumers' different preferences and There is still a demand for continuous development of other forms of optical lenses due to different usage requirements

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