Gudong Technology successfully realized the molecular bonding process and accelerated the large-scale mass production of optical waveguides

Recently, through continuous technical research by the optical and process teams, Gudong Technology has successfully achieved molecular bonding technology verification. This process achieves molecular bonding by utilizing the mutual attraction of molecules on the surface of glass materials to connect. As the core process of array optical waveguide processing, this technological breakthrough has greatly reduced problems caused by artificial factors, effectively improved the production yield of array optical waveguide lenses, and paved the way for the large-scale mass production and application of array optical waveguide products. Gudong Technology's molecular bonding technology has the following advantages:

Improve production yield: Molecular bonding can reduce the instability of the relative spacing between the original glue layers, greatly improving the product yield;

Improve the display effect: molecular bonding requires the surface of the lamination surface to be smoother, reducing the problem of loss of clarity after light propagates through multiple dichroic films; at the same time, since there is no influence of glue, higher refractive index glass can be used, which greatly improves the viewing angle and provides a stronger sense of immersion;

Improving mass production: using automated equipment processing, mass production can be achieved, thus solving the problem of product mass production;

Improve product service life: Waveguide lenses produced using molecular bonding are not prone to cracking, degumming, or yellowing in extreme environments. The product has high reliability and long service life.

Image source: Gudong Technology

Traditional array light wavesThe production process of the guide film uses glue bonding, which requires manual gluing. The process is complicated and cumbersome, and it is very prone to problems such as poor yields caused by human errors. In addition, due to the characteristics of the glue material, bubbles generated during the process and inconsistent curing integrity will affect optical performance such as refractive index, resulting in stray light, astigmatism and color casts, affecting imaging quality. In addition, affected by environmental changes, the glue is also prone to aging, cracking and other problems, reducing the service life of the product.

In order to solve the problems of the gluing process, the industry began to develop new technologies. Molecular bonding technology, since there is no need to use glue, mainly uses the electromagnetic interaction between the molecules on two smooth surfaces to attract each other. The smoother the molecules, the smaller the distance between them, the greater the attraction, even greater than the adhesive force of superglue, which can make the fitting surfaces closely together and strengthen the bond. degree, improve the flatness of the bonding surface, realize automated processing of the core process, reduce manual participation, and achieve mass production, thus improving the production yield and reducing costs. It is currently the "optimal" technical solution. Gudong Technology is also one of the very few optical waveguide technology manufacturers in the industry that masters this production process.

With the mass production of Gudong Technology's array optical waveguide modules, it can provide AR glasses manufacturers with optical display solutions that can be mass-produced, have excellent displays, large fields of view, and low costs, and promote the further development and popularization of the AR glasses industry. (Source: Gudong Technology)