Ophthalmic Lens Simulation via Visual Motion Dynamics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing simulation apparatuses for ophthalmic lenses do not adequately consider the visual motion characteristics of lens users, specifically the ratio of head and eye movements, which affects the suitability of progressive power lenses, leading to issues with image clarity and comfort due to astigmatism and distortion.
Innovation Solution
A simulation apparatus that acquires and processes visual motion characteristic data to simulate how a lens user sees through different lens designs, allowing for the display of image data movement based on the user's specific head and eye motion ratios, enabling the evaluation of progressive power lenses with either hard or soft designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a progressive power lens with hard design is used to widen clearly visible regions, then ease of viewing is improved, but astigmatism and distortion increase causing image blur and discomfort
Solution Approach 1:
The patent applies dynamics by making the simulation apparatus adjustable to different visual motion characteristics. The system can dynamically adapt to simulate both head movers and eye movers by adjusting the ratio of head movement to eye movement parameters, allowing users to experience how different lens designs perform under their specific movement patterns
Solution Approach 2:
The patent changes parameters by allowing adjustment of the visual motion characteristic ratio (head movement to eye movement). The simulation apparatus can modify this parameter to match different user types, thereby evaluating lens performance under varying optical conditions and movement patterns
2Object-affected harmful factors
If a progressive power lens with soft design is used to reduce astigmatism and distortion, then image clarity is improved, but clearly visible regions become narrower reducing ease of viewing
Solution Approach 1:
The simulation apparatus dynamically adjusts to match the user's visual motion characteristics, allowing realistic simulation of how soft design lenses perform during actual use. This enables users to experience the trade-off between reduced distortion and narrower clear zones under their specific movement patterns
3Device complexity
If existing simulation apparatuses are used without considering visual motion characteristics, then device complexity is reduced, but accuracy of simulating actual visual experience deteriorates
Solution Approach 1:
The patent introduces dynamic adjustability to the simulation apparatus, allowing it to adapt to different visual motion characteristics. This adds complexity to enable accurate simulation of individual user experiences while maintaining a relatively simple overall system architecture
Solution Approach 2:
The simulation apparatus incorporates adjustable parameters for visual motion characteristics, specifically the ratio of head movement to eye movement. This parameter adjustment capability enables accurate simulation of different user types without requiring completely different simulation systems
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A simulation apparatus includes: a design data acquiring unit that acquires lens design data; a lens design unit that designs a lens on the basis of the lens design data; an image data acquiring unit that acquires image data corresponding to a lens user's visual sense; a visual motion characteristic data acquiring unit that acquires visual motion characteristic data regarding the motion of head and eyes when the lens user moves the eyes to various observation objects; an image processing unit that creates processing image data which is the image data seen through the design lens designed by the lens design unit; an image moving unit that moves the processing image data created by the image processing unit; an image data control unit that controls a movement amount of the processing image data, which is moved by the image moving unit, on the basis of the visual motion characteristic data; and a display unit that displays the processing image data.