Optical lens and imaging equipment

Abstract

The invention discloses an optical lens and imaging equipment. The optical lens sequentially comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an imaging surface along an optical axis; the first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has negative focal power, the object side surface of the second lens is a convex surface near the optical axis, and the image side surface of the second lens is a concave surface near the optical axis; the third lens has positive focal power, and the object side surface of the third lens is a convex surface near the optical axis; the fourth lens has negative focal power, the object side surface of the fourth lens is a convex surface near the optical axis, and the image side surface of the fourth lens is a concave surface near the optical axis; the fifth lens has positive focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power; the seventh lens has negative focal power; and the first lens is a glass aspheric lens, and the other lenses are plastic aspheric lenses. The optical lens has the advantages of being large in aperture, large in imaging target surface, high in pixel, capable of meeting the requirement for grouping adjustability of the AA technology and high in yield.

Description

Technical field [0001] The present invention relates to the field of imaging lens, and more particularly to an optical lens and an imaging device. Background technique [0002] With the continuous upgrade of smartphones, consumers' shooting function of mobile phones is getting higher and higher, ultra-high pixels, large apertures, and small sizes become the main trend of mobile phone lenses. In order to pursue high quality imaging, the mainstream mobile phone lens is currently using full plastic lenses, and the number of lenses is upgraded from 5 to 6 pieces to 7 to 8 pieces to correct optical paths, but are thinned by mobile phones and plastic lenses, assembly accuracy, etc. The constraints of factors, the number of plastic lenses is difficult to further increase, and the full plastic lens encounters the bottleneck. Since the light transmittance of the glass lens is better, the refractive index is higher, and the thickness can be effectively reduced, therefore combined with glas...

AI Technical Summary

Problems solved by technology

At this stage, glass-plastic hybrid mobile phone lenses are all integrated structures, that is, all optical lenses are assembled in the same lens barrel, which has problems such as non-adjustable lenses, low assembly yield, and poor imaging quality.

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