Optical Lens Module With Feedback-Based Diopter Correction
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Solution Overview
Problem
Wearable electronic devices with VR technology cause image distortion and visual fatigue due to diopter adjustments, affecting user experience, especially for users who need glasses for clear vision.
Innovation Solution
An optical lens module with adjustable lens units and a detection unit that generates feedback signals to an image processor, allowing for diopter adjustments to match individual visual acuity, reducing distortion and enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a focal length adjustment mechanism is designed to accommodate users with different visual acuity, then the device becomes suitable for all kinds of people, but image distortion occurs causing visual fatigue and discomfort
Solution Approach 1:
The patent implements a feedback mechanism where a detection unit detects the diopter adjustment amount and provides feedback signals to an image processor. The image processor then applies corresponding correction data to compensate for image distortion. This closed-loop feedback system allows the device to maintain both adaptability to different visual acuity and image quality by dynamically adjusting correction parameters based on the detected diopter setting.
Solution Approach 2:
The patent changes the parameters of the image signal by applying different correction data corresponding to different diopter adjustment amounts. The image processor modifies image quality parameters (such as distortion correction, field of view, transverse chromatic aberration) based on the detected diopter value, thereby compensating for the harmful effects of image distortion while maintaining the focal length adjustment capability.
2Ease of operation
If the diopter is adjusted to match individual visual acuity, then users with different visual needs can use the device, but image quality declines due to distortion
Solution Approach 1:
The detection unit detects the diopter adjustment amount and provides feedback to the image processor, which then applies corresponding correction data to maintain image quality. This feedback mechanism ensures that image quality is preserved across different diopter settings by dynamically compensating for distortion effects.
Solution Approach 2:
The system performs preliminary correction by pre-storing multiple sets of correction data corresponding to different diopter adjustment amounts. When a specific diopter setting is detected, the corresponding correction data is immediately applied to the image signal before display, preventing image quality decline rather than attempting to correct it after the fact.
3Adaptability or versatility
If the distance between lens units is changed to adjust diopter, then visual acuity requirements are met, but image distortion increases
Solution Approach 1:
The detection unit detects the diopter adjustment amount resulting from changes in lens unit distance and provides feedback to the image processor. The image processor then applies corresponding correction data to compensate for the image distortion that occurs as a result of the focal length adjustment, thereby recovering the lost image quality information.
Solution Approach 2:
The image processor acts as an intermediary between the optical system (lens units) and the display system. It receives the distorted image signal from the optical system, applies appropriate correction data based on the detected diopter setting, and outputs the corrected image signal to the display, thereby mediating and eliminating the information loss caused by distortion.
Data Source
AI summary
An optical lens module includes: an operating element which includes a first lens unit, and a second lens unit; a holder arranged on the image source side of the second lens unit; an image source element disposed to the holder; an image processor electrically connected to the image source element to provide correction data of image quality; and a detection unit electrically connected to the image processor to provide a feedback signal; When the operating element is activated, the operating element drives the first lens unit or the second lens unit to move along a central axis, changing the distance between the first and second lens units on the central axis, the detection unit generates the feedback signal and transmits it to the image processor, and then the image processor provides an correction data of image quality corresponding the feedback signal to the image source element.