Spectacle Lens Prism Zone for Virtual Image Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spectacle lenses fail to generate a virtual image in front of the eyes in a compact and integrated design, lacking an efficient method to deflect light beams from displays for clear and undistorted viewing.
Innovation Solution
A spectacle lens design featuring a first surface with a base part zone and a prism zone, where the prism part is offset to deflect light beams, allowing them to be reflected twice within the lens to create a sharp optical image at a predetermined virtual distance, taking into account individual eye parameters and usage positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional spectacle lens design is used, then the lens structure is simple, but it cannot generate a virtual image in front of the eyes or deflect light beams from displays
Solution Approach 1:
The spectacle lens is divided into two distinct functional zones: a base part zone that provides prescription correction and a prism zone that deflects light beams from displays. This segmentation allows each zone to perform its specific function independently, enabling the lens to generate virtual images while maintaining a manageable structural complexity through functional specialization.
Solution Approach 2:
Different regions of the lens are assigned different optical properties: the base part zone has optical characteristics optimized for vision correction, while the prism zone has characteristics optimized for light deflection. This local differentiation of optical quality enables the lens to simultaneously provide prescription correction and display image generation without requiring complete redesign of the entire lens structure.
2Device complexity
If the prism part is integrated into the lens, then the design becomes compact and integrated, but the manufacturing and calculation complexity increases
Solution Approach 1:
The prism part is merged with the spectacle lens to form an integrated unit, eliminating the need for separate components. This merging achieves compact design while the patent provides specific guidance on how to calculate and manufacture the combined structure, including methods for determining surface configurations that account for both prescription and prism functions.
Solution Approach 2:
The spectacle lens is designed to perform multiple functions simultaneously: it provides prescription correction through the base part, generates virtual images through the prism zone, and can be manufactured using integrated processes. This multi-functionality is achieved by combining different optical functions within a single lens structure that can be produced through unified manufacturing methods.
3Measurement precision
If the lens design accounts for individual eye parameters and usage positions, then visual clarity is improved, but the calculation and optimization process becomes more complex
Solution Approach 1:
The patent performs preliminary calculation and optimization of the lens design, incorporating individual eye parameters and usage positions before manufacturing. This preliminary action ensures that the final lens provides optimal visual clarity for each user, and the patent provides systematic methods for conducting these calculations to manage the complexity of the process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables the generation of a clear and undistorted virtual image of a display at a predetermined distance, enhancing visual clarity and comfort for spectacle wearers by optimizing the lens design for individual eye characteristics and usage positions.
Implementation Method 1
the prism part is designed and arranged to deflect light beams coming from a display in such a way that an optical image of a display is generated at a predetermined virtual distance
Implementation Method 2
at least one light beam coming from the display after deflection on the side surface of the lens in the prism part at least once reflected on the eye-side surface of the lens in the prism part by total reflection
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
The invention relates particularly to an eyeglass lens having a first and second surface, wherein at least the first surface of the eyeglass lens has a basic partial zone and at least one prism zone. The basic partial zone of the first surface, together with the opposing second surface of the eyeglass lens, forms a basic part of the eyeglass lens, which is designed to view at least a predefined distance. The prism zone of the first surface, together with the opposing second surface of the eyeglass lens, forms a prism part, which is configured and disposed such that an optical depiction of a display is produced at a predefined virtual distance in front of the eyes of the spectacle wearer. The invention further relates to glasses, which comprise the eyeglass lens, and to a method and devices for calculating or optimizing, and producing, the eyeglass lens.