Accessory for a mobile user device providing laser-based treatment

Abstract

The present disclosure generally relates to an accessory (100) for a mobile user device (202), where the accessory (100) is configured for providing laser-based treatment using at least three non-overlapping wavelength ranges The present disclosure also relates to a system (200) comprising the accessory (100) connected to a mobile user device (202).

Description

[0001] ACCESSORY FOR LASER-BASED TREATMENT

[0002] TECHNICAL FIELD

[0003] The present disclosure generally relates to an accessory for a mobile user device, where the accessory is configured for providing laser-based treatment using at least three non-overlapping wavelength ranges. The present disclosure also relates to a system comprising the accessory connected to a mobile user device, and to a corresponding method for operating the accessory.

[0004] BACKGROUND

[0005] Light therapy, including low-level laser therapy (LLLT) and photobiomodulation (PBMT), has emerged as a non-invasive technique for stimulating biological processes in living tissue. Applications of light therapy range from promoting wound healing and reducing inflammation to modulating the immune response and mitigating symptoms associated with various dermatological and mucosal conditions.

[0006] In some implementations, specific wavelengths of light are selected to induce targeted biological effects, such as releasing nitric oxide from tissue, stimulating collagen production, or providing antimicrobial activity. For example, certain wavelengths in the ultraviolet, visible, or near-infrared spectra may be selected based on their efficacy in producing therapeutic effects in skin, mucosa, or subcutaneous tissue.

[0007] An example of a solution relying on laser-based light therapy is presented in US 2021 / 0290970 Al, which discloses illumination devices for impinging light on tissue, for example within a body cavity of a patient, to induce various biological effects. According to US 2021 / 0290970 Al, biological effects may include at least one of inactivating and / or inhibiting growth of one or more pathogens, upregulating a local immune response, increasing endogenous stores of nitric oxide, releasing nitric oxide from endogenous stores, and inducing an anti-inflammatory effect. Wavelengths of light are selected based on intended biological effects for one or more of targeted tissue types and targeted pathogens. Light treatments may provide multiple biological effects, either with light of a single wavelength or with light having multiple wavelengths.

[0008] While such systems may offer beneficial therapeutic results, they tend to be costly, bulky, and complicated to operate. They are typically designed as stand-alone devices with integrated power sources, custom control interfaces, and dedicated signal-processinghardware. As a result, they may be inaccessible for broader consumer use or for portable, personalized treatment scenarios.

[0009] Accordingly, there remains a need for simplified and cost-effective solutions that allow users to access laser-based treatment in a more integrated and user-friendly manner.

[0010] Further attention is drawn to KR20120054999A, US2018042676A1,

[0011] CN 110648759A and US2016331993 A 1.

[0012] SUMMARY

[0013] According to an aspect of the present disclosure, it is therefore provided an accessory for laser-based treatment, wherein the accessory is configured to be connected to a mobile user device, and wherein the accessory comprises a laser emission unit configured to emit light within at least three non-overlapping wavelength ranges, a communication unit configured to establish a data communication link with the mobile user device, a control unit operatively connected to the communication unit and the laser emission unit, wherein the control unit is configured to receive control signals from the mobile user device via the communication unit and to control the laser emission unit based on the received control signals, wherein the control unit is adapted to selectively activate light emission within at least one of the wavelength ranges during operation, and a handheld casing provided separate from the mobile user device and configured to house the laser emission unit, the communication unit, and the control unit.

[0014] The present disclosure is based upon the realization that it would provide an advantage to leverage the computational, interface, and power-handling capabilities of modem mobile user devices, including for example smartphones or tablets, to simplify the design and use of laser-based therapeutic equipment, in view of the modular approach as is provided by the solution according to the present disclosure. By offloading core functionalities such as user interface, treatment control, and optionally power management to the mobile user device, the accessory itself can be made significantly more compact, costefficient, and accessible to a broader range of users.

[0015] Furthermore, the solution according to the present disclosure provides light radiation characterized by high coherence, narrow spectral bandwidth (monochromaticity), and higher optical power density compared to the non-coherent LED light generally used by prior art, thereby enabling deeper tissue penetration and specific biological interactions (such as laser speckle formation) associated with laser phototherapy.Generally, the accessory according to the present disclosure comprises at least one laser emission unit configured to emit therapeutic light in three or more non-overlapping wavelength ranges, each selected to achieve a distinct biological effect. The laser emission unit may for example comprise separate laser diodes, for instance emitting light in the violet / blue, green, and red portions of the electromagnetic spectrum, as will be further elaborated below. Furthermore, a control unit comprised with the accessory is configured to receive control signals from the mobile user device and is further configured to selectively activate one or more of the lasers based on a selected treatment protocol.

[0016] The configuration according to the present disclosure provides several technical advantages over prior art, for example by enabling advanced light-based therapy to be delivered using a compact and portable device that requires no standalone control interface, thereby reducing complexity and manufacturing cost. Furthermore, the use of nonoverlapping wavelength ranges allows for targeted stimulation of distinct biological mechanisms. Such biological mechanisms may for example include, but are not limited to anti-inflammatory effects, microbial control, or nitric oxide modulation, possibly individually or in combination. Additionally, leveraging the processing and interface capabilities of the mobile device allows for more flexible and personalized treatment protocols, which may be dynamically selected, updated, or monitored via a dedicated application running on the mobile device.

[0017] According to some embodiments, the accessory further comprises a power management unit configured to receive power from the mobile user device. In such embodiments, the accessory may draw operating power directly from a smartphone, tablet, or similar device via a physical connection, for example a USB-C or Lightning connector, or any other similar physical connection (present or future). Accordingly, the mobile user devices not only offer advanced control and interface capabilities, but also increasingly provide sufficient power output to support peripheral accessories with moderate energy demands. By utilizing the power-handling capabilities of the mobile user device, the need for separate power supplies or internal batteries within the accessory may be avoided or minimized.

[0018] Possibly, the power management unit may also comprise a rechargeable battery configured to provide power to the laser emission unit and the control unit. The battery may be charged via the mobile user device or through an independent charging interface. Such a configuration allows the accessory to operate both in tethered mode, whilephysically connected to the mobile device, and in untethered mode, enabling additional flexibility for the user.

[0019] Furthermore, the control unit may in some embodiments be configured to modulate the laser emission according to a predetermined treatment protocol. Such modulation may include time-based sequencing, pulse modulation, or intensity adjustments of one or more lasers, each corresponding to a particular therapeutic wavelength. The treatment protocol may be stored locally in the accessory, but is preferably defined, selected, or updated via an application running on the mobile user device, allowing for dynamic customization.

[0020] In preferred embodiments, the accessory may further comprise safety mechanisms designed to ensure controlled and safe use of the laser-based therapy. Such mechanisms may include proximity sensors configured to detect skin contact or appropriate positioning before laser activation, and software-based interlocks that prevent emission outside of predefined parameters. The control unit may also be configured to automatically deactivate laser output upon detection of abnormal operating conditions or prolonged exposure exceeding safe thresholds. Such precautions may possibly enhance user safety, particularly in consumer- facing implementations, and reduce the risk of accidental misuse or overexposure. Additionally, safety logs may be maintained by the mobile application to track emission durations and compliance with safety protocols over time.

[0021] In further embodiments, the accessory and mobile application may collaboratively maintain a detailed safety and usage log, which can serve both as a compliance feature and as a clinical audit trail. The log may include timestamped entries for laser activation, wavelength selection, intensity levels, duration, and safety interlock events. Such data may be useful for retrospective analysis, treatment validation, or integration into broader patient health records. Additionally, the application may allow authorized healthcare professionals to remotely review safety and treatment data, thereby facilitating supervised therapy or clinical validation without requiring in-person visits.

[0022] In accordance with the present disclosure, by integrating power management into the accessory and allowing it to draw power from the mobile user device it may be possible to make the overall system lighter and more compact. Additionally, the inclusion of a rechargeable battery further improves usability, especially in scenarios where full mobility is desirable. Moreover, the ability to execute structured treatment protocols, whether predefined or user-selected, ensures more precise and consistent therapeutic delivery. Such a possible modularity, combined with the use of a mobile application as the main interface,provides a scalable platform capable of adapting to different treatment regimens and user preferences.

[0023] In some embodiments, the predetermined treatment protocol specifies pulse modulation of at least one laser emitter. Pulse modulation refers to the delivery of laser light in controlled bursts rather than in continuous emission, with defined parameters such as pulse width, frequency, and duty cycle.

[0024] Furthermore, pulsed laser light may offer distinct therapeutic benefits over continuous-wave illumination. For example, pulsing may enhance biological responsiveness, reduce thermal load on tissue, and extend battery life during operation. By enabling the control unit to execute such modulation patterns, the accessory can deliver customized treatment profiles tailored to specific therapeutic goals or tissue types.

[0025] According to further embodiments, the at least three non-overlapping wavelength ranges emitted by the accessory are selected within the ultraviolet (UV), visible, and near-infrared (NIR) spectra. Each of these spectral domains is associated with specific biological interactions: UV light may be used for antimicrobial effects, visible light for modulation of inflammation or circulation, and NIR light for deeper tissue penetration and stimulation of metabolic processes.

[0026] Additionally, combining wavelengths from different spectral regions enables the accessory to address multiple biological mechanisms in a coordinated and potentially synergistic manner. The separation of the wavelength ranges ensures that spectral interference is minimized, and that each wavelength range can be individually modulated or activated.

[0027] In one specific embodiment, the three non-overlapping wavelength ranges include a first range between 400 - 420 nm, a second range between 500 - 540 nm, and a third range between 620 - 660 nm. These ranges correspond approximately to blue / violet, green, and red portions of the electromagnetic spectrum. Each is known to influence different biological processes, such as microbial suppression (blue / violet), nitric oxide modulation (green), and vasodilation or inflammation control (red).

[0028] In certain embodiments, the accessory may be configured to support sequential activation of different wavelength ranges, either in a predefined sequence or based on dynamic feedback. Such a configuration enables multimodal treatment sessions, where distinct biological mechanisms are targeted in succession using different wavelengths. For example, a session may begin with blue light for microbial control, followed by green light to modulate nitric oxide, and conclude with red light for anti-inflammatory effects. The controlunit, in coordination with the mobile application, may manage these transitions automatically as part of a structured protocol. Sequential wavelength cycling may possibly increase therapeutic efficacy by aligning treatment timing with tissue response dynamics and minimizing energy overlap or interference between wavelengths.

[0029] In such an arrangement, the laser emission unit preferably comprises at least three separate laser emitters, each configured to emit light within a respective one of the selected wavelength ranges. These may be individual diodes integrated into a compact package, allowing for parallel or sequential operation under the control of the mobile device. Separate emitters provide design flexibility and ensure independent control of output parameters for each therapeutic wavelength.

[0030] In line with the discussion above, pulse modulation may allow for finer control of energy delivery and supports tissue-selective effects while minimizing unwanted side effects. The selection of non-overlapping wavelength ranges spanning key spectral regions enables multi-modal therapy within a single device. Furthermore, the use of discrete laser sources simplifies wavelength isolation, reduces optical cross-talk, and supports more efficient optical coupling into tissue.

[0031] In a further embodiment, the laser emission unit comprises a single multiwavelength laser source configured to emit light within the at least three non-overlapping wavelength ranges. Such a source may, for example, include a multi-die laser package or a tunable laser with discrete emission bands.

[0032] Additionally, integrating multiple wavelengths into a single laser module can reduce the overall footprint of the accessory and simplify optical alignment. Such an implementation may be particularly advantageous in form-factor-constrained designs intended for use in conjunction with portable electronics. Moreover, a single-source configuration may facilitate efficient thermal management and reduce manufacturing complexity.

[0033] According to some embodiments, the control unit is configured to communicate with the mobile user device via a wired connection. Such a configuration may include, for example, a USB or Lightning interface, which provides both data and power transfer capabilities. A wired connection can offer reliable and low- latency communication, particularly suitable for high-precision control of laser timing and modulation. Additionally, it enables direct power delivery from the mobile device, thereby avoiding the need for a separate power source in the accessory.In alternative or complementary embodiments, the control unit is configured to communicate with the mobile user device via a wireless connection, such as for example one of Bluetooth, BLE (Bluetooth Low Energy), or Wi-Fi. Other known or similar wireless protocols are of course possible and within the scope of the present disclosure.

[0034] Furthermore, the accessory may be physically attached or aligned with the mobile user device using magnetic or inductive alignment features, such as MagSafe or other Qi-compatible magnetic docking systems. Such attachment mechanisms may optionally provide power transfer, communication, or mechanical guidance, thereby enhancing usability, alignment precision, and form factor integration.

[0035] Furthermore, wireless communication may offer increased flexibility in user experience, particularly in applications where the accessory is used in hard-to-reach body regions or where cable-free operation is desired. Wireless communication further allows for remote updates, protocol customization, or synchronization with cloud-based treatment planning tools.

[0036] In any of the embodiments described above, the mobile user device may for example be selected to be a smartphone or a tablet. Such devices provide a powerful and ubiquitous platform for user interaction, data logging, and protocol execution. Leveraging commercially available mobile user devices avoids the need for proprietary displays, processors, or control interfaces in the accessory itself. Furthermore, the presented examples of mobile devices allow the accessory to inherit the intuitive interface, connectivity, and processing capabilities of modem mobile devices, while focusing the accessory hardware solely on efficient light delivery and safety management. Accordingly, in view of the above it is possible to enable highly functional laser-based therapy using an accessory that is compact, cost-efficient, and integrated seamlessly into the user’s existing technology ecosystem.

[0037] In some embodiments, the control unit is configured to adjust the intensity of at least one laser emitter based on user input received via the mobile user device. The user input may be provided through a dedicated mobile application, allowing the user to increase or decrease treatment intensity, either manually or as part of a guided treatment protocol. For example, by enabling real-time adjustment of laser intensity through a familiar user interface, such as a smartphone screen, the treatment experience becomes more intuitive and usercentric. Such a configuration may be beneficial in both consumer and clinical settings, providing increased comfort, adaptability to individual tolerance levels, and support for personalized therapy profiles. Moreover, intensity adjustment via software eliminates theneed for physical dials or buttons on the accessory, thereby improving durability and simplifying the design.

[0038] As discussed above, the laser emission unit is housed in a handheld casing separate from the mobile user device. The casing may include a connector (e.g., USB-C), a wireless module, or a docking structure for physical or magnetic attachment to the mobile device, while maintaining physical separation between the optical emission path and the display or battery of the mobile device. Such a design may for example allow the accessory to be ergonomically optimized for directing light toward a treatment area, such as the face, oral cavity, or skin surface, without being constrained by the physical shape or orientation of the mobile device. Additionally, the solution as presented in relation to the above embodiments may also offers increased freedom in usage scenarios, enabling the user to hold or position the laser emission unit independently while controlling the treatment through the mobile device.

[0039] As such, the solution according to the present disclosure contribute to the flexibility, safety, and usability of the system, allowing it to adapt to different use cases and preferences, while still leveraging the computational and power-handling capabilities of the mobile user device.

[0040] Preferably, the accessory as discussed above is provided as a component of a system, further comprising a mobile user device, selected in line with the discussion above. As such, in such an embodiment the mobile user device is preferably configured to transmit control signals to the accessory to regulate operation of the laser emission unit.

[0041] In line with the present disclosure, the suggested system architecture enables the mobile user device to take responsibility for higher-level functions such as user interaction, treatment selection, timing, feedback logging, and potentially also treatment optimization through machine learning or cloud-based analytics. Technically, such an approach allows the accessory to operate with minimal embedded logic and hardware, relying instead on the rich resources of the mobile user device, including its processing power, connectivity, storage, and user interface. Such a separation of concerns leads to a more compact, lightweight, and energy-efficient accessory, while still supporting advanced control schemes, such as dynamic wavelength sequencing, dosage control, or patient-specific treatment regimens.

[0042] Furthermore, from a usability perspective, the presented system architecture allows the user to manage treatments in an intuitive and familiar way, via an app interface on the mobile device, which may include visual instructions, treatment progress tracking, andsafety interlocks. Such an implementation may possibly reduce user error, improve adherence to recommended protocols, and facilitate broader adoption of light-based therapy across both consumer wellness and clinical applications.

[0043] The modular nature of the presented system architecture further enables the use of interchangeable or specialized accessories tailored to specific treatment needs. For example, one accessory may be optimized for dermatological applications, while another may be configured for intraoral use or joint therapy. Each accessory may include unique optical configurations or mechanical form factors, while remaining compatible with the same mobile application and control interface. Such modularity allows users to expand their therapy capabilities over time without investing in entirely new systems. From a design and manufacturing perspective, it also enables standardization of control logic while allowing specialization in optical output and physical ergonomics.

[0044] In further embodiments, the mobile application may be configured to support extended functionality such as multi-accessory control, remote treatment planning, or cloudbased synchronization of user profiles and settings. For example, a clinician may remotely define or update a treatment protocol, which is then downloaded and applied via the user’s mobile device. Accordingly, the application may further allow the user to operate multiple accessories in sequence or in parallel, enabling complex treatment setups such as bilateral therapy or staged wavelength cycling. Through such an architecture, the solution according to the present disclosure not only supports standalone consumer use but can be scaled toward integration with professional treatment environments or telehealth ecosystems.

[0045] In one embodiment, the mobile user device comprises an application configured to provide a user interface for selecting a treatment protocol. The application may offer a graphical interface through which users can browse, initiate, or modify treatment settings, thereby ensuring accessibility and ease of use across a wide range of user profiles.

[0046] In some embodiments, the treatment protocol defined via the application may include one or more operational parameters of the accessory. Such parameters may include a defined duration of laser emission, a pulse modulation pattern for one or more of the laser emitters, and an intensity level tailored for a specific wavelength range. By allowing userspecific or condition-specific definition of these variables, the system enables precise control over energy delivery and therapeutic effect.

[0047] Furthermore, the application executed on the mobile user device may further be configured to store treatment history and generate recommendations based on previous usage patterns. Historical data may include records of wavelength selection, exposuredurations, modulation parameters, and user feedback. By analyzing this data, the system can propose protocol adjustments over time, supporting adherence to therapeutic plans while promoting optimized treatment outcomes.

[0048] In some embodiments, the application may also be adapted to receive biometric data from one or more external sensors and adjust the treatment protocol accordingly. Such biometric data may include, for instance, skin temperature, tissue perfusion, or photoreactivity measurements. The use of external inputs enables dynamic adaptation of treatment parameters in response to real-time physiological conditions, thereby enhancing both the safety and efficacy of the laser-based therapy.

[0049] Examples of biometric feedback may include skin temperature monitoring to prevent overheating, photoplethysmographic data to assess tissue perfusion, or optical reflectance data for evaluating pigmentation or photoreactivity. Such data may be collected by external wearable sensors or via imaging capabilities of the mobile user device itself, such as the smartphone camera. Based on these inputs, the application may dynamically adjust laser intensity, pulse duration, or active wavelength range to optimize treatment efficacy while maintaining safety. Accordingly, the suggested feedback loop may additionally support individualized therapy that adapts in real time to the user’s physiological condition, allowing for highly personalized and responsive treatment regimens.

[0050] According to another aspect of the present disclosure, there is provided a method for operating a laser-based treatment accessory, wherein the accessory is configured to be connected to a mobile user device, the method comprising the steps of establishing a communication link between the accessory and the mobile user device, transmitting control signals from the mobile user device to the accessory, controlling a laser emission unit of the accessory to emit light within at least three non-overlapping wavelength ranges based on the received control signals, and selectively activating at least one of the laser emitters during operation according to a predetermined treatment protocol, wherein the laser-based treatment accessory further comprises a handheld casing provided separate from the mobile user device and configured to house the laser emission unit, the communication unit, and the control unit. This aspect of the present disclosure provides similar advantages as discussed above in relation to the previous aspects of the present disclosure.

[0051] In some implementations, the method further comprises the step of adjusting the intensity of at least one laser emitter based on user input received via a user interface of the mobile user device. Such a configuration allows real-time tuning of treatment parameters, thereby enabling the user or a healthcare provider to tailor the energy delivery to specifictreatment needs, personal comfort levels, or clinical recommendations. The use of the mobile user device as an interface platform ensures a familiar and responsive environment for performing such adjustments.

[0052] In further embodiments, the control signals transmitted from the mobile user device to the accessory may define pulse modulation parameters for at least one laser emitter. Modulating the laser emission in accordance with such parameters can serve multiple purposes, including improving the penetration depth of light, minimizing thermal load on tissue, and enhancing biological responsiveness for certain therapeutic targets. The ability to define and execute such modulation profiles using the control capabilities of the mobile user device allows for complex treatment dynamics to be implemented in a cost-efficient and user-friendly manner.

[0053] Further features of, and advantages with, the present disclosure will become apparent when studying the appended claims and the following description. The skilled addressee realize that different features of the present disclosure may be combined to create embodiments other than those described in the following, without departing from the scope of the present disclosure.

[0054] BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The various aspects of the present disclosure, including its particular features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:

[0056] Fig. 1 conceptually illustrates an accessory according to a currently preferred embodiment of the present disclosure for use in conjunction with a mobile user device,

[0057] Figs. 2A and 2B schematically illustrates a possible implementation of a system according to the present disclosure, and

[0058] Fig. 3 is a flow chart illustrating the steps of performing the method according to a currently preferred embodiment of the present disclosure.

[0059] DETAILED DESCRIPTION

[0060] The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the present disclosure are shown. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully conveythe scope of the present disclosure to the skilled person. Like reference characters refer to like elements throughout. The following examples illustrate the present disclosure and are not intended to limit the same.

[0061] Turning now to the drawings and to Fig. 1 in particular, there is conceptually illustrated an accessory 100 adapted for use in conjunction with a mobile user device 200 (shown in Figs. 2A and 2B and elaborated below), wherein the accessory is configured to provide laser-based treatment using at least three non-overlapping wavelength ranges.

[0062] As shown in Fig. 1, the accessory 100 comprises a control unit 102, a power management unit 104, a communication unit 106, a laser control unit 108, and a laser emission unit 110 comprising a set of individual laser emitters. The overall architecture is configured for compact integration and real-time control via the mobile user device 200.

[0063] In line with the present disclosure, the control unit 102 operates as a central controller, interpreting incoming control signals and coordinating the operation of the laser control unit 108. The control unit 102 may optionally be configured to interface with additional safety or biometric sensors (not shown) such as proximity detectors, temperature sensors, or other sensors.

[0064] For reference, the control unit 102 may for example be manifested as a general-purpose processor, a graphics processing unit, an application specific processor, a circuit containing processing components, a group of distributed processing components, a group of distributed computers configured for processing, a field programmable gate array (FPGA), etc. The processor may be or include any number of hardware components for conducting data, signal and / or image processing or for executing computer code stored in memory. It may also be possible and within the scope to make use of system-on-chip (SoC) implementations. The memory may be one or more devices for storing data and / or computer code for completing or facilitating the various methods described in the present description. The memory may include volatile memory or non-volatile memory. The memory may include database components, object code components, script components, or any other type of information structure for supporting the various activities of the present description.

[0065] According to an exemplary embodiment, any distributed or local memory device may be utilized with the systems and methods of this description. According to an exemplary embodiment the memory is communicably connected to the processor (e.g., via a circuit or any other wired, wireless, or network connection) and includes computer code for executing one or more processes described herein.According to the illustrated embodiment, the laser emission unit 110 comprises at least three separate laser emitters configured to emit therapeutic light within non-overlapping wavelength ranges. For example, the emitters may include a 405 nm laser (violet / blue), a 520 nm laser (green), and a 640 nm laser (red), each corresponding to different regions of the electromagnetic spectrum and offering distinct biological effects in line with the discussion presented above. The lasers are, in the present embodiment, activated under the control of the laser control unit 108, as discussed in the following.

[0066] The laser control unit 108 receives instructions from the control unit 102, based on control signals received from the mobile user device 200. The control architecture allows for precise regulation of which lasers are active, the intensity of emission, and modulation patterns such as pulsing, sequencing, or duty cycling, in accordance with a selected treatment protocol.

[0067] The power management unit 104 is responsible for handling incoming power. In preferred embodiments, power is received directly from the mobile user device 200 via a wired or inductive connection. Optionally, the unit may also include a rechargeable battery (not shown), allowing for short-term untethered operation. This configuration enables a highly portable device architecture without reliance on a bulky internal power supply.

[0068] In the present embodiment, the communication unit 106 is configured to establish a communication link with the mobile user device 200. Such a communication link may include both wired protocols (e.g., USB-C, Lightning) and wireless options such as Bluetooth, BLE, or Wi-Fi. Through this channel, the accessory 100 receives control signals, treatment protocols, and user commands. The communication unit 106 may also support firmware updates or synchronization with cloud-based treatment logs and applications.

[0069] Together, the modular architecture shown in Fig. 1 supports efficient and flexible operation of the accessory 100, while leveraging the user interface and computational power of a connected mobile device 200.

[0070] The housing of the accessory 100 may preferably be formed from lightweight, biocompatible materials such as medical-grade plastics, anodized aluminum, or polymer composites. The optical components may be configured for collimation or diffusion depending on the target application area. In miniaturized embodiments, surface-mount laser diodes and flexible PCBs may be employed to achieve a compact form factor.

[0071] With further reference to Figs. 2A and 2B, there is presented a system 200 comprising the accessory 100 and a mobile user device 202, such as a smartphone or tablet. In the illustrated embodiment, Fig. 2A shows the accessory 100 as a compact, attachable unitconfigured to dock with the rear surface of the mobile user device 202. A physical connection interface (not explicitly numbered) may be provided on the attachment side, supporting both power delivery and data exchange between the two components.

[0072] Fig. 2B illustrates the system in an operational state, wherein the accessory 100 is mounted to the mobile user device 202 and emits therapeutic light, as schematically illustrated by a conical light beam. In practical embodiments, the emitted laser light may be optically conditioned by one or more beam-shaping components, such as collimating lenses, diffusers, or adjustable apertures. These optical elements may be selected to control the spot size, beam divergence, and uniformity of energy distribution on the treatment surface. For example, a diffuser may be used to avoid hotspots and ensure safe and even exposure across the target tissue area, while a collimator may be used to enhance penetration depth for subdermal targets.

[0073] In some embodiments, the accessory may be removably affixed using magnetic alignment mechanisms (e.g., MagSafe-compatible structures), adhesive, or a custom clip-on mount. The mobile user device 202 may run a dedicated application configured to provide a graphical user interface (GUI) 204 allowing the user to start or stop the treatment process and to select or configure treatment parameters such as intensity, pulse modulation, or emission wavelength.

[0074] In this embodiment, the accessory 100 is shown as physically distinct from the mobile user device 202, though it may also be implemented in other configurations, such as tethered via a cable or integrated into a case. The GUI 204 may visually indicate which wavelengths are being activated, display elapsed treatment time, and optionally prompt for safety checks or user feedback. Additionally, the system 200 may optionally include feedback mechanisms such as vibration alerts, audible signals, or visual cues to guide the user through the treatment process or confirm proper operation.

[0075] Accordingly, and with further reference to Fig. 3, the system 200 is, during operation, adapted to perform a method for controlling the accessoiy 100 in conjunction with the mobile user device 202. As illustrated, the scheme according to the present disclosure involves a sequence of interrelated actions executed by the accessoiy and the mobile user device to enable personalized laser-based treatment. The method begins by establishing, SI, a communication link between the accessory 100 and the mobile user device 202, using the wired or wireless means as discussed above.

[0076] Once the communication link is established, the method proceeds by transmitting, S2, control signals from the mobile user device 202 to the accessory 100. Suchsignals may include preconfigured treatment protocols, user-defined parameters such as intensity or pulse pattern, or real-time adjustments issued during the course of treatment.

[0077] Based on the received control signals, the method continues with controlling, S3, the laser emission unit 110 of the accessory 100 to emit light within at least three nonoverlapping wavelength ranges. The laser control unit 108 coordinates this operation, managing parameters such as wavelength selection, emission timing, and modulation pattern to align with the selected treatment protocol.

[0078] Finally, the method involves selectively activating, S4, at least one of the laser emitters during the treatment session. Activation may follow a structured protocol that defines which wavelength or combination of wavelengths to apply, for how long, and in what modulation mode, such as pulsed or continuous-wave operation, depending on the intended therapeutic effect.

[0079] In some embodiments, the modulation pattern may be dynamically adjusted based on real-time inputs received from the mobile user device, such as user-selected preferences or biometric feedback. For instance, if an external sensor indicates elevated skin temperature or decreased perfusion, the mobile application may instruct the control unit to reduce laser intensity, switch to a pulsed mode, or temporarily suspend treatment. Such dynamic adaptation enhances safety and allows the therapy to be tailored to the user’s individual physiological response during the session.

[0080] By means of the present disclosure, it is made possible to deliver multiwavelength laser-based treatment using a compact and user-friendly accessory that is tightly integrated with commercially available mobile devices. The system architecture offloads complex control logic and user interaction to the mobile device, enabling the accessory to remain minimalistic in terms of weight, size, and cost. At the same time, the accessory benefits from robust real-time control, flexible power delivery, and access to cloud-based or Al-driven treatment personalization. Treatment protocols may possibly be updated via the mobile application based on clinician input, historical use, or cloud-hosted optimization models.

[0081] As discussed above, the presented architecture further allows integration with external biometric sensors (not shown), which may communicate wirelessly with the mobile user device 202. Such sensors may include skin temperature probes, photoplethysmographic sensors for tissue perfusion monitoring, or reflectance-based detectors for photoreactivity analysis. Data from these sensors may be processed by the mobile application to dynamically adjust treatment parameters, for example by adjusting intensity, switching modulation modes,or temporarily suspending treatment in response to sensor-detected events, such as elevated skin temperature, insufficient contact pressure, or adverse perfusion feedback.

[0082] For example, in some embodiments the accessory 100 may be arranged to comprise embedded safety interlocks to ensure safe operation. Such safety features may include real-time monitoring of operating temperature, optical power output thresholds, skin proximity detection, and automatic shutdown in case of malfunction or excessive exposure duration.

[0083] Furthermore, the control functionality of the present disclosure may be implemented using existing computer processors, or by a special purpose computer processor for an appropriate system, incorporated for this or another purpose, or by a hardwire system. Embodiments within the scope of the present disclosure include program products comprising machine-readable medium for carrying or having machine-executable instractions or data structures stored thereon. Such machine-readable media can be any available media that can be accessed by a general purpose or special purpose computer or other machine with a processor. By way of example, such machine-readable media can comprise RAM, ROM, EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, solid state drives or other non-volatile flash based storage devices, or any other medium which can be used to carry or store desired program code in the form of machine-executable instractions or data structures and which can be accessed by a general purpose or special purpose computer or other machine with a processor. When information is transferred or provided over a network or another communications connection (either hardwired, wireless, or a combination of hardwired or wireless) to a machine, the machine properly views the connection as a machine-readable medium. Thus, any such connection is properly termed a machine-readable medium.

[0084] Combinations of the above are also included within the scope of machine-readable media. Machine-executable instructions include, for example, instractions and data which cause a general-purpose computer, special purpose computer, or special purpose processing machines to perforin a certain function or group of functions.

[0085] Although the figures may suggest a particular sequence, the order of the steps may vary. Two or more steps may also be performed concurrently or partially overlapping Such variation will depend on the software and hardware systems chosen and on designer choice. All such variations are within the scope of the disclosure. Likewise, software implementations could be accomplished with standard programming techniques with ralebased logic and other logic to accomplish the various connection steps, processing steps,comparison steps and decision steps. Additionally, even though the present disclosure has been described with reference to specific exemplifying embodiments thereof, many different alterations, modifications and the like will become apparent for those skilled in the art.

[0086] In addition, variations to the disclosed embodiments can be understood and effected by the skilled addressee in practicing the claimed present disclosure, from a study of the drawings, the disclosure, and the appended claims. Furthermore, in the claims, the word ’’comprising” does not exclude other elements or steps, and the indefinite article ”a” or ”an” does not exclude a plurality.

Claims

CLAIMS1. An accessory (100) for laser-based treatment, wherein the accessory (100) is configured to be connected to a mobile user device (202), and wherein the accessory (100) comprises:a laser emission unit (110) configured to emit light within at least three nonoverlapping wavelength ranges,a communication unit (106) configured to establish a data communication link with the mobile user device (202),a control unit (102) operatively connected to the communication unit (106) and the laser emission unit (110), wherein the control unit (106) is configured to receive control signals from the mobile user device (202) via the communication unit (106) and to control the laser emission unit (110) based on the received control signals, wherein the control unit (102) is adapted to selectively activate light emission within at least one of the wavelength ranges during operation, anda handheld casing (112) provided separate from the mobile user device (202) and configured to house the laser emission unit (110), the communication unit (106), and the control unit (102).

2. The accessory (100) according to claim 1, further comprising a power management unit configured to receive power from the mobile user device (202).

3. The accessory (100) according to claim 2, wherein the power management unit comprises a rechargeable battery configured to provide power to the laser emission unit (110) and the control unit (102).

4. The accessory (100) according to any one of the preceding claims, wherein the control unit (102) is further configured to modulate the laser emission according to a predetermined treatment protocol.

5. The accessory (100) according to claim 4, wherein the predetermined treatment protocol specifies pulse modulation of at least one laser emitter comprised with the laser emission unit (110).

6. The accessory (100) according to any one of the preceding claims, wherein the at least three non-overlapping wavelength ranges are selected within the ultraviolet, visible, and near-infrared spectra.

7. The accessory (100) according to any one of claims 1 - 5, wherein the at least three non-overlapping wavelength ranges include a first range between 400 - 420 nm, a second range between 500 - 540 nm, and a third range between 620 - 660 nm.

8. The accessory (100) according to any one of the preceding claims, wherein the laser emission unit (110) comprises at least three separate laser emitters, each configured to emit light within a respective one of the at least three non-overlapping wavelength ranges.

9. The accessory (100) according to any one of claims 1 - 7, wherein the laser emission unit (110) comprises a single multi -wavelength laser source configured to emit light within the at least three non-overlapping wavelength ranges.

10. The accessory (100) according to any one of the preceding claims, wherein the control unit (102) is configured to communicate with the mobile user device (202), using the communication unit (106), via a wired connection.

11. The accessory (100) according to any one of claims 1 - 9, wherein the control unit (102) is configured to communicate with the mobile user device (202), using the communication unit (106) via a wireless connection.

12. The accessory (100) according to any one of the preceding claims, wherein the mobile user device (202) is a smartphone or a tablet.

13. The accessory (100) according to any one of the preceding claims, wherein the control unit (102) is configured to adjust the intensity of at least one laser emitter based on user input received via the mobile user device (202).

14. A system (200) comprising:a mobile user device (202), andan accessory (100) according to any one of the preceding claims,wherein the mobile user device (202) is configured establish a data communication link with the communication unit (106) of the accessory (100) and to transmit control signals to the accessory to regulate operation of the laser emission unit (110).

15. The system (200) according to claim 14, wherein the mobile user device (202) comprises an application configured to provide a user interface for selecting a treatment protocol.

16. The system (200) according to claim 15, wherein the treatment protocol defines at least one of:a duration of laser emission,a pulse modulation pattern, andan intensity level for at least one laser emitter comprised with the laser emission unit (110).

17. The system (200) according to any one of claims 14 - 16, wherein the application is further configured to store treatment history and provide recommendations based on previous treatments.

18. The system (200) according to any one of claims 14 - 17, wherein the application is configured to receive biometric data from an external sensor and adjust the treatment protocol accordingly.

19. A method for operating a laser-based treatment accessory, wherein the accessory (100) is configured to be connected to a mobile user device, the method comprising the steps of:establishing a communication link between the accessory and the mobile user device,transmitting control signals from the mobile user device to the accessory, controlling a laser emission unit of the accessory to emit light within at least three non-overlapping wavelength ranges based on the received control signals, and selectively activating at least one of the laser emitters during operation according to a predetermined treatment protocol,wherein the laser-based treatment accessory further comprises a handheld casing (112) provided separate from the mobile user device (202) and configured to house the laser emission unit (110), the communication unit (106), and the control unit (102).

20. The method according to claim 19, further comprising the step of adjusting the intensity of at least one laser emitter based on user input received via a user interface of the mobile user device.

21. The method according to any one of claims 19 and 20, wherein the control signals define pulse modulation parameters for at least one laser emitter.

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