Optical coupling lens mold insert

Abstract

The invention relates to an optical coupling lens mold insert. The optical coupling lens mold insert comprises a first mold insert core, a second mold insert core and a mold insert body, wherein the first mold insert core comprises a first molding surface and a first rear surface opposite to the first molding surface, the second mold insert core comprises a second molding surface and a second rear surface opposite to the second molding surface, the mold insert body comprises a first surface and a second surface opposite to the first surface, two containing cavities penetrating through the first surface and the second surface are formed inside the mold insert body, both the first mold insert core and the second mold insert core are contained in the containing cavities of the mold insert body, the first mold insert core is protruded away a distance from the first surface of the mold insert body, and the second molding surface of the second mold insert core is leveled with the first surface of the mold insert body. The optical coupling lens mold insert can reduce the processing difficulty.

Description

Technical field [0001] The invention relates to molding technology, in particular to an optical coupling lens mold core for molding an optical coupling lens. Background technique [0002] The optical coupling lens is usually formed by injection molding and includes an optical surface, two positioning columns extending perpendicular to the optical surface, and a plurality of converging lenses formed on the optical surface and located between the two positioning columns. The multiple converging lenses are generally divided into two groups of "in" and "out". For example, if the number of the multiple converging lenses is two, it is a one-in-one-out system. If the number of the multiple converging lenses is four, It is a two-in-two-out system. If the number of converging lenses is more, the grouping will be analogized. [0003] The design of the lens curved surface on the substrate side needs to consider the characteristics of the photodiode and laser diode beam focusing, so the optic...

AI Technical Summary

Problems solved by technology

For microlenses designed with equal height and depth, there will be no problem of tool interference due to the uniform height of the turning surface in the mold core processing; but for microlenses with unequal height and depth, due to the distance and depth between microlenses Assuming that the distance between each other is too close and the depth difference is too large, the side with the lower depth of the mold core may interfere with the tool

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