Method for manufacturing lens of multifocal glasses and multifocal glasses

Abstract

The invention provides a method for manufacturing a multi-focus glasses lens and multi-focus glasses, and the method comprises the steps: carrying out the shooting of N groups of light on the same grating recording material, obtaining a grating element with a plurality of optical focuses, for example, the grating element can be HOE or DOE; manufacturing a multi-focus spectacle lens by using the grating element; wherein each group of light in the N groups of light comprises object light and reference light, the object light in different groups corresponds to the myopia degree or the hyperopia degree (namely the diopter) of the user, the reference light in different groups corresponds to different preset watching distances, and each group of light corresponds to one focus or one diopter. According to the method for manufacturing the multi-focus glasses lens, the multi-focus glasses lens is manufactured based on the grating element technology of angle multiplexing, controllable step change of the diopter of the lens is achieved, the multi-focus glasses lens with a smaller step change range is achieved, and the use efficiency and the user experience of the multi-focus glasses are improved.

Description

technical field [0001] The present application relates to the field of spectacles, and more specifically, relates to a method for manufacturing multifocal spectacle lenses and multifocal spectacles. Background technique [0002] Progressive multifocal glasses (or it can also be called multifocal glasses) can have different luminosity required for seeing distance, medium distance and near distance at the same time. A pair of multifocal glasses is equivalent to several glasses of different powers. Multi-focal glasses solve the annoyance of vision correctors who need different diopters to see objects at different distances and need to change glasses frequently. A pair of multifocal glasses can see distant objects, medium-distance objects, and near objects. [0003] At present, the multifocal spectacle lens is generally partitioned, and different areas correspond to different focal lengths (or also called diopters, focal points). In this way, the multifocal function is realize...

AI Technical Summary

Problems solved by technology

[0003] At present, the multi-focal function is generally achieved by dividing the multi-focal spectacle lenses into different areas, and different areas correspond to different focal lengths (or also called diopters, focal points). However, in this way, due to the The area of ​​the lens is limited, and it is impossible to divide it into many areas, resulting in a large jump between the focal lengths (or diopters) corresponding to different areas. The user wears multifocal glasses made in this way for a long time, which will cause people Eye fatigue will harm eye health

Moreover, when using multi-focal glasses, only one area can be used at the same time, which greatly limits the field of view (angle of view, FOV) of the human eye itself, affects the use in actual scenes, and reduces the performance of multi-focal glasses. efficiency of use

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