Processing method of optical reflecting lens

Abstract

The invention relates to a processing method of an optical reflecting lens. The processing method is characterized in that an APF film and a PMMA film are attached to form a semi-finished film material by adopting an UV photocuring glue, then the semi-finished film material is subjected to injection molding with a lens base material after the semi-finished film material is subjected to cutting, hot pressing and punching, and the optical reflecting lens is formed after the de-stress treatment. In the processing process of the optical reflecting lens, the UV photocuring glue can form a hard gluelayer between the APF film and the lens base material, the hard glue layer is higher in surface flatness, high in stability and not prone to deformation compared with a soft glue layer, so that the imaging quality of the optical reflecting lens is guaranteed.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to a processing method for optical reflective lenses. Background technique [0002] Augmented Reality (AR for short) is a technology that calculates the position and angle of the camera image in real time and adds the corresponding image. The goal of this technology is to put the virtual world on the screen and interact with the real world. [0003] In AR glasses, optical reflective lenses are a very important part. When the optical reflective lens is concave semi-transparent and semi-reflective (visible light transmittance > 43%, polarized light reflectivity > 90%, optical axis angle of transmission vibration is 45°±2°, curvature radius error is less than 1.5%), the optical reflective lens is only It can provide good imaging reflection without affecting the user's viewing of external scenes, and cooperate with the actual game scene to make the user's experience more realistic. ...

AI Technical Summary

Problems solved by technology

However, the optical reflective lens has the following problems: since the OCA film is a soft product, after vacuum and high pressure bonding, the surface flatness of the OCA film formed between the lens substrate and the APF film is poor (such as figure 1 shown), which affects the imaging quality of optical mirrors (such as figure 2 shown)

Due to the poor weather resistance of the OCA film, when the optical reflective lens is used, the OCA film is unstable and prone to deformation, which will also affect the imaging quality of the optical reflective lens.

[0005] In addition, in the existing processing technology of optical reflective lenses, the APF film is first fixed on the fixture and then bonded to the lens substrate after high-pressure molding. The APF material must exceed the lens substrate to ensure the bonding quality, so there is a material utilization rate. low problem

Images