Wearable Retinal Pattern Projection for Precise Infrared Irradiance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing retinal implants face challenges in efficiently projecting visual information onto the retina without causing infection, scarring, or requiring power supplies, and conventional augmented reality goggles are unsuitable for precise irradiance needed by infrared light-based implants.
Innovation Solution
A system comprising a camera, projector device, and processor worn as a frame, which captures images, converts them into pulsed light beams, and projects them onto a modified retinal area, eliminating the need for a power supply by using photosensitive electrodes to convert light into electrical current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional augmented reality goggles are used to project light into the eye, then the device structure is simple and easy to manufacture, but the irradiance precision is insufficient for infrared light-based retinal implants
Solution Approach 1:
The system segments the projection task into multiple components: a camera captures the visual scene, a processor converts the image into a pixel pattern, and a projector device with infrared light source projects the processed pattern. This segmentation allows each component to be optimized for its specific function, achieving precise irradiance control while managing device complexity
Solution Approach 2:
The system replaces conventional optical projection mechanisms with a digitally controlled infrared projection system. The processor device converts captured images into digital pixel patterns that control the infrared projector, substituting mechanical optical adjustments with electronic control to achieve precise irradiance modulation
2Reliability
If skin-penetrating wires are used in retinal implants, then power and information can be delivered directly, but the risk of infection and scarring increases
Solution Approach 1:
The system replaces electrical wire-based power and information delivery with wireless optical communication and inductive power transfer. The projector device transmits visual information as modulated light through the pupil, while an external coil provides inductive power coupling, eliminating skin-penetrating wires and their associated infection and scarring risks
Solution Approach 2:
The system introduces optical and electromagnetic fields as intermediary carriers for information and power transmission. The infrared light beam serves as an intermediary to deliver visual information wirelessly through the eye's natural pupil, while the external coil creates an electromagnetic field for inductive power coupling, replacing direct electrical contact
3Ease of operation
If a non-wearable projector device is used, then the irradiance precision can be maintained, but the patient comfort and continuous usage capability deteriorate
Solution Approach 1:
The system integrates multiple functions into a wearable platform: the camera captures visual scenes, the processor device converts images to pixel patterns, and the infrared projector projects the processed information onto the retina. This multi-functional integration allows the wearable device to maintain irradiance precision while providing continuous patient comfort and ease of operation
Solution Approach 2:
The system employs dynamic image processing and real-time pattern conversion to adapt to changing visual scenes and patient needs. The processor device dynamically converts captured images into appropriate pixel patterns for infrared projection, allowing the wearable system to maintain precision across varying conditions while ensuring patient comfort
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
Enables continuous and efficient projection of visual patterns onto the retina, allowing patients to perceive both projected images and ordinary vision simultaneously, with enhanced safety and comfort through a compact, wearable design.
Implementation Method 1
a camera (6) for capturing an image
Implementation Method 2
Each pixel has one or several photodiodes that capture the light delivered from a visual processor and converts it into electrical current for stimulation
Implementation Method 3
a projector device (1) for projecting a pulsed light beam (4) reflecting a pattern of interest (44) into a human eye
Data Source
AI summary
The present invention pertains to a system for projecting a pattern of interest onto a retinal area of a human eye, containing a carrying frame for being worn by a patient, a camera for capturing an image, a projector device for projecting a pulsed light beam reflecting a pattern of interest into a human eye, and a processor device being in communication with the camera and the projector device, wherein the processor device is adapted for converting the image captured by the camera into the pattern of interest being basis for the pulsed light beam, wherein the projector device and the camera are attached to the carrying frame.