Delivering reliable, inclusive physiological monitoring in real-world clinical conditions across diverse patient populations.
worksOpto Physiological Monitoring (OPM) is Carelight’s proprietary sensing technology, designed to capture high-quality physiological signals continuously and non-invasively. By combining optical sensing with advanced signal processing, OPM supports earlier insight, greater accuracy and more reliable long-term monitoring.
Optical sensing promises continuous, non-invasive monitoring, but current PPG-based devices fail in real-world use. Motion artefacts, skin tone bias and poor perfusion degrade signal quality, limiting accuracy and excluding patients when conditions move beyond settings.
Optical sensing technologies such as photoplethysmography (PPG) have been used in clinical settings for decades, yet their real-world performance remains constrained. Signal quality is highly sensitive to motion, perfusion changes and optical interference caused by skin tone variation. During the Covid-19 pandemic, these limitations became more visible.
Studies showed that conventional pulse oximeters can overestimate oxygen saturation in darker skin tones, increasing the risk of missed hypoxaemia and delayed clinical intervention.
At a technical level, this is driven by the way most PPG devices operate: using a two-dimensional, point-based optical measurement that interacts with only a small volume of tissue. This limits vessel engagement, amplifies noise and reduces reliability when conditions move beyond controlled environments.
Carelight’s OPM applies a 3D, multispectral optical architecture that interrogates tissue volume rather than a single point. By modelling light transport through tissue types, it improves vessel interaction, resists motion interference and delivers reliable signals.
Carelight’s Opto Physiological Monitoring (OPM) technology takes a fundamentally different approach to optical sensing. Rather than relying on point measurements, OPM uses a three-dimensional, multispectral illumination design that interrogates a volume of tissue.
By applying radiative transport theory, OPM models how light of different wavelengths interacts with complex biological structures including blood, skin, muscle and connective tissue. This allows the system to capture higher-definition physiological signals while remaining robust to motion and variability between individuals.
The result is a more complete optical model that improves signal-to-noise performance, maintains consistency across skin tones and oxygenation levels, and enables reliable physiological monitoring in conditions where traditional PPG devices struggle.
With reliable optical sensing in real-world conditions, OPM unlocks broader clinical use. It supports inclusive monitoring across skin tones and activity levels, and creates the potential to reduce wired bedside equipment, transforming care across settings.
With the technical limitations of conventional optical sensing addressed, new clinical and commercial possibilities emerge. Reliable, inclusive signal capture enables optical monitoring to move beyond tightly controlled environments and into everyday clinical and care settings.
OPM opens the potential to reduce dependence on wired bedside equipment, particularly in high-dependency environments where clinicians are constrained by cables, probes and fixed machines. By supporting continuous, non-invasive monitoring across varied patient populations and activity levels, OPM can simplify workflows while improving patient comfort and access.
This creates opportunities not only in community and remote care, but also across hospital environments where flexible, high-quality sensing can change how monitoring is delivered.
OPM preserves high-definition pulsatile signals during oxygen desaturation, enabling reliable multi-parameter physiological measurement in real-world and clinically challenging conditions.
Carelight’s first Weartech product will deliver hospital-level accuracy on multiple vital signs, validated against gold-standard methods.
Clinical accuracy → ±0.2°C
The first generation of Weartech devices are powered by OPM and AI signal processing, capturing the fine features in the pulsatile signal to deliver hospital-level accuracy, even during movement and across every skin tone.
OPM is just the start. The next wave of Weartech devices will integrate multi-modal sensing – OPM plus motion plus ECG – combined with AI interpretation to create richer cardiovascular insights, from rhythm irregularities to recovery monitoring and pushing wearable care beyond anything possible today.
We’re expanding beyond today’s vital signs. From blood pressure to fluid status, OPM is advancing toward broader cardiovascular monitoring, opening the door to deeper insights, AI-powered predictions and stronger clinical decisions.
Expected timeline → Q3 2025
Carelight’s OPM adapts to different Weartech formats, from patches to wrist and chest sensors – with AI ensuring the same clinical-grade accuracy wherever monitoring is needed.
Lightweight wrist wear for long-term monitoring and everyday integration.
Parameters → HR, RR, HRV, SpO₂, PI
Regulatory → FDA 510(k) planned Q3 2026
Launch → TBC
High fidelity cardiac monitoring and diagnostic applications.
Parameters → HR, RR, HRV, SpO₂, PI; ECG, cardiac functions
Regulatory → FDA 510(k) planned Q1 2028
Small, light and wire free multiparameter monitoring.
Parameters → HR, RR, HRV, SpO₂, PI, BP; ECG, cardiac functions
Regulatory → FDA 510(k) planned Q1 2028
Providing an accessible solution to congested patient space.
Parameters → HR, RR, HRV, SpO₂, PI; ECG, cardiac functions
Regulatory → FDA 510(k) planned Q1 2028
Designed for healthcare at scale: FHIR-compliant, EMR-ready, and secured with enterprise-grade protocols.
Key technical parameters for engineers and integration teams evaluating OPM-powered Weartech devices for real-world deployment, with AI-driven performance built in.
Sensor configuration
3D multi-wavelength array
Sampling rate
Up to 1000 Hz
Battery life
7+ days typical use
Operating temperature
5°C to 45°C
Connectivity
Bluetooth 5.2, Wi-Fi 6
Sensor configuration
3D multi-wavelength array
Sampling rate
Up to 1000 Hz
Battery life
7+ days typical use
Operating temperature
5°C to 45°C
Connectivity
Bluetooth 5.2, Wi-Fi 6
