Deep-PPG – Study on the suitability of VCSEL and LED for recording vital parameters

Deep-PPG – Study on the suitability of VCSEL and LED for recording vital parameters - Deep-PPG - VCSEL vs. LED

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00034553

Enrollment

Registered

2025-04-14

Start date

2025-04-21

Completion date

Unknown

Last updated

2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

No statements are made about the physiological condition of the study population.

Interventions

Group 1: Observational study. The study investigates the signal quality of PPG measurements in wearables, comparing Vertical-Cavity Surface-Emitting Lasers (VCSEL) with conventional LEDs. PPG data wil

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: No known previous illnesses (physical/mental) BMI < 30

Exclusion criteria

Exclusion criteria: Known previous illnesses (physical/mental) BMI >= 30

Design outcomes

Primary

Measure	Time frame
Recording of the PPG curve with different light sources (VCSEL, LED) in the red and infrared spectral range. Comparison of the signal quality of the PPG curve from different light sources.	—

Countries

Germany

Contacts

Public ContactOliver Amft

Intelligente eingebettete Systeme, Universität Freiburg

amft@informatik.uni-freiburg.de+49 761 887 865 733

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026