Square stackable glass lens module and manufacturing method thereof

Abstract

The invention relates to a square stackable glass lens module and a manufacturing method thereof. The module is the shape of a square cylinder and is formed by straight cutting an array stackable lens module into multiple units. The square stackable glass lens module comprises at least two optical glass lenses, a positioning mechanism for interconnection thereon and other matched optical elements which are combined into a stacked body by adhesives. The manufacturing method of the square stackable glass lens module comprises the following steps of: making an array optical glass lens which is provided with multiple optical glass lenses and forms an array by using raw glass materials and a multi-cavity glass molding technology, wherein the array optical glass lens is provided with a positioning mechanism; stacking at least two array optical glass lenses, the positioning mechanism and other matched optical elements into an array stackable lens module; and then cutting the array stackable lens module to form multiple square stackable glass lens modules. The square stackable glass lens manufactured by using the manufacturing method can realize the simple alignment of the optical central axis of the lens to conform to optical precision, greatly simplify the manufacturing process, and achieve the purposes of mass production and manufacturing cost reduction.

Description

technical field [0001] The invention relates to a square stacked glass lens module and its manufacturing method (Rectangular StackedGlass Lens Module with Alignment Fixture and Manufacturing Methodthereof), especially to a glass lens module in which each optical glass lens and each optical element can be precisely stacked and combined , to be used in combined lenses for LED light sources, combined lenses for solar energy conversion systems, optical lenses for cameras and mobile phone cameras, etc. Background technique [0002] Glass precision molding technology has been widely used in the manufacture of aspheric molded glass lenses with high resolution, good stability and low cost, such as US2006 / 0107695, US2007 / 0043463, Taiwan Province patents TW095101830, TW095133807 , Japanese patent JP63-295448, etc., which utilizes the softening characteristics of glass at high temperature to heat and soften a glass element (or glass preform, glass preform) in the upper and lower molds,...

AI Technical Summary

Problems solved by technology

[0006] However, the lens modules used in the optical lenses of cameras and mobile phone cameras are often composed of a variety of optical surfaces with different concave and convex shapes, and the requirements for the alignment of the central axis of the optical surface and the positioning accuracy of the optical surface are relatively high.

In the existing method of combining projections and holes in the plastic array optical lens, since the plastic array optical lens is molded by plastic injection, the size of the protrusions and the recesses will be caused by shrinkage of the material. Change, its positioning accuracy is difficult to improve, resulting in difficult positioning of the optical central axis, and there are considerable limitations in use

Lenses made of molded glass have a better refractive index than plastic lenses and are heat-resistant, and have been gradually used in various optical systems; array optical lenses made of molded glass have relatively less shrinkage problems, but if Figure 1 ~ Figure 3 It is still difficult to align the optical central axis when the optical lens is combined or the optical element is combined, which makes it difficult to improve the resolution

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