Prism total reflection double-lens common-chip module

Abstract

The invention discloses a prism total reflection double-lens common-chip module. The module comprises two sets of lens modules distributed in left-right symmetry and provided with superposed optical axes, a triangular prism set arranged between the two sets of lens modules, and an image sensor arranged below the triangular prism set, the triangular prism set is formed by two isosceles right-angledtriangular prisms arranged in symmetry, the two isosceles right-angled triangular prisms respectively comprise an incident plane located in a vertical direction and opposite to the orientation of thelens modules, the isosceles right-angled triangular prism comprises an emitting plane vertical to the incident plane and towards the image sensor, an inclined plane of the isosceles right-angled triangular prism is a reflection plane, lights enter the prism total reflection double-lens common-chip module from the two sets of lens modules and are projected to the same image sensor in a steering manner after total reflection of the two isosceles right-angled triangular prisms, and the imaging error is effectively reduced. In addition, light reflection is guided by employing two triangular prisms arranged in symmetry, plating processing of working surfaces of the triangular prisms is avoided, and the process cost of products is reduced.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a prism total reflection double-lens common-chip module. Background technique [0002] The working principle of the current image acquisition system is that light enters through the lens and is projected on the image sensor to form an image visible to the human eye. Common digital cameras use this system. Because it only sets a lens, it cannot form a panoramic shooting effect, even if the angle of the lens is increased, it cannot be realized. At present, the maximum shooting angle of the wide-angle lens has exceeded 200 degrees, but it is also difficult to complete the panoramic image shooting. [0003] The existing panoramic shooting technology uses at least two image sensing channels, that is, two lenses are placed opposite each other, and then the captured images are overlapped to obtain a panoramic shooting effect. Due to the use of two channels, the images are prese...

AI Technical Summary

Problems solved by technology

Although this technical solution solves the problem of consistent image parameters, it also has certain deficiencies. The triangular prism used in this technical solution reflects light directly through the mirror surfaces on the left and right sides of the triangular prism. In order to achieve a better reflection effect, To reduce light attenuation, the surface of the mirror must be coated, and the coating on the prism is not only complicated in process, high in production cost, but also damaged after a period of use

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