Somatic Sensation Induction Using Absorptive Laser Medium
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Solution Overview
Problem
Laser devices that do not generate biological damage to skin tissues fail to induce a sufficient stimulus, limiting their effectiveness in applications like biostimulation and medical imaging.
Innovation Solution
A somatic sensation induction system that uses a medium with adjustable absorption coefficients and controlled laser beam parameters, such as energy intensity, pulse frequency, and wavelength, to induce sensations like touch and vibration on the skin without causing damage, by radiating the laser beam onto the medium rather than directly on the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a laser beam is radiated directly on skin tissue without causing damage, then skin safety is improved, but the stimulus magnitude induced on the skin tissue becomes insufficient
Solution Approach 1:
The patent introduces an intermediate medium (such as a gel or liquid crystal material) placed between the laser beam and the skin tissue. This intermediary material absorbs and modulates the laser energy, converting it into thermal and mechanical stimuli that can be safely transmitted to the skin without direct laser-skin contact, thereby resolving the contradiction between safety and stimulus effectiveness
Solution Approach 2:
The patent employs parameter changes by adjusting the physical properties of the intermediate medium (such as viscosity, thermal conductivity, or phase state) in response to laser irradiation. These parameter changes enable the medium to transform laser energy into controlled thermal and mechanical stimuli, achieving sufficient stimulus magnitude while maintaining skin safety through indirect energy transmission
2Reliability
If a medium with high absorption coefficient is used to absorb laser energy, then stimulus induction capability is improved, but the risk of energy concentration and potential damage increases
Solution Approach 1:
The patent applies local quality by creating spatial variations in the absorption coefficient within the intermediate medium. Different regions of the medium have different absorption properties, allowing localized energy absorption and stimulus generation while distributing the overall energy load to prevent dangerous concentration in any single point, thus balancing stimulus effectiveness with safety
Solution Approach 2:
The patent utilizes dynamics by making the absorption coefficient of the intermediate medium time-dependent and controllable. The medium's absorption properties can be dynamically adjusted during laser irradiation, enabling optimal energy absorption at different time points while preventing excessive energy concentration, thereby resolving the contradiction between stimulus induction and damage prevention
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 system effectively generates thermal and thermo-elastic effects, providing a strong and safe stimulus to the skin, diversifying sensations and reducing the risk of skin damage, while allowing for various combinations of laser parameters and medium materials to tailor the induced sensations.
Implementation Method 1
a medium of high absorption coefficient... one side of which is radiated with the laser beam
Implementation Method 2
the electric generation unaccompanied by damage to a medium is called as a laser induced thermo-elastic effect, referring to electric generation generating a stress wave without damage to a medium
Data Source
AI summary
The present invention relates to a system for fundamentally eliminating skin damage caused by direct radiation of a laser beam on the skin of a user and inducing a somatic sensation on the skin within a safety standard by radiating a pulse laser beam on a medium attached to the skin of the user on which the somatic sensation is desired to be induced. Particularly, the present invention relates to a somatic sensation induction system which can induce a somatic sensation of various feelings delivered to a user by adjusting an absorption coefficient of a medium contacting with the skin of a user, energy intensity and a repetition rate of a radiated laser beam and the like.