Binocular Eyeglass Simulation with Unified Accommodation
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Solution Overview
Problem
Existing eyeglasses-wearing simulation methods inadequately reflect how the outside is viewed in binocular vision, particularly with specialized transmission power distribution lenses like progressive power lenses, as they primarily simulate visual performance for a single eye rather than both eyes.
Innovation Solution
An eyeglasses-wearing simulation method that sets the same amount of accommodation for both eyes, using rules based on the dominant eye's accommodation or the smaller required accommodation for each eye, to accurately simulate binocular vision by calculating blur for each object point in the visual field, enabling stereoscopic viewing with parallax images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single-eye simulation method is used, then the simulation device can reproduce visual performance with shaking, distortion and blur, but the simulation does not adequately reflect how the outside is viewed in binocular vision
Solution Approach 1:
The patent combines the simulation of both left and right eye visual fields into a unified binocular simulation system. The image creation unit generates parallax images for both eyes, and the simulation display unit presents them together to reproduce binocular vision effects including stereoscopic depth perception, which cannot be achieved with single-eye simulation alone.
Solution Approach 2:
The patent transitions from monocular to binocular simulation by adding the dimension of stereoscopic vision. By creating and displaying parallax images for both eyes simultaneously, the system reproduces the third-dimensional depth perception characteristic of binocular vision, enhancing the realism of the simulation.
2Manufacturing precision
If different amounts of accommodation are set for left and right eyes, then each eye's visual requirement can be optimized, but the simulation does not reflect actual binocular vision where accommodation is common to both eyes
Solution Approach 1:
The patent applies homogeneity by setting the same accommodation amount for both left and right eyes in the simulation, mirroring the physiological condition of binocular vision where accommodation is common to both eyes. This ensures the simulation accurately reflects real-world viewing conditions while maintaining visual comfort and stereoscopic perception.
3Ease of operation
If trial wearing with test lenses is conducted, then patients can check visual performance, but actual visual performance in eyeglass wearing state is not adequately reflected for specialized lenses like progressive power lenses
Solution Approach 1:
The patent creates a virtual copy of the eyeglass-wearing experience through computer-generated parallax images that simulate the optical effects of specialized lenses like progressive power lenses. This virtual simulation allows patients to experience the actual visual performance without physical trial wearing, accurately reproducing distortion, blur, and stereoscopic effects that trial lenses cannot adequately demonstrate.
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
This approach provides a more accurate simulation of how the outside is viewed when wearing eyeglasses, allowing for realistic stereoscopic viewing and improved accuracy in simulating the visual effects of binocular vision, including distortion and blur.
Implementation Method 1
an optical system comprising spectacle lens and the ocular optical system
Data Source
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AI summary
An eyeglasses-wearing simulation method comprising: a step of creating a pair of left and right original images based on virtual scene data constituted by virtual objects placed in visual field spaces of the left and right eyes; a step of calculating distortion and blur of left and right eye eyeglass lenses and adding the distortion and blur to the left and right eye original images based on optical data of left and right eye eyeglass lenses deigned in accordance with prescription information of the patient, and a step of stereoscopically displaying the processed images viewed through the pair of left and right eyeglass lenses on a screen, wherein a value of the blur is calculated by setting a same amount of accommodation to the left and right eyes in regard to all of object points.