The ams-Osram TMF8829 direct Time-of-Flight (dToF) sensor significantly increases resolution, from the previously common 8×8 zones to 48×32. It is designed to detect subtle spatial differences and distinguish closely spaced or slightly varied objects. This kind of precision is critical for a broad spectrum of applications: from logistics robots that distinguish between nearly identical packages, to camera systems that maintain focus on moving objects in dynamic video scenes. The new dToF sensor supports precise 3D detection and differentiation in diverse applications, without a camera and with stable performance across varying targets, distances, and environmental conditions.
With dToF technology, the sensor emits light pulses in the invisible infrared range. These pulses reflect from objects in the sensor’s field of view and return to the sensor, which calculates the distance based on the time it takes for the light to travel. Multi-zone sensors enhance this by capturing reflected light from multiple viewing angles (zones), like a network of echo points. This enables the creation of detailed 3D depth maps.
Versatile application areas
The TMF8829 divides its field of view into up to 1,536 zone, which is a significant improvement over the 64 zones in standard 8x8 sensors. This higher resolution enables finer spatial detail. For example, it supports people counting and presence detection in smart lighting systems, object detection and collision avoidance in robotic applications, and intelligent occupancy monitoring in building automation. The detailed depth data also provides a foundation for machine learning models that interpret complex environments and enable intelligent interaction with surroundings.
Compact design
Measuring just 5.7 × 2.9 × 1.5 mm, the sensor is more compact than typical sensors with lower resolution and delivers high resolution in a format ideal for space-constrained devices. Because it operates without a camera, it supports privacy-sensitive applications. When paired with a camera, the sensor enables hybrid vision systems like RGB Depth Fusion, combining depth and color data for AR applications such as virtual object placement.
Classified as a Class 1 eye-safe device, the TMF8829 uses a dual VCSEL (Vertical Cavity Surface Emitting Laser) light source to measure distances up to 11 meters with 0.25 mm precision, sensitive enough to detect subtle movements like a finger swipe. With its 48×32 zones, the sensor covers an 80° field of view, delivering depth information across a scene comparable to that of a wide-angle lens. On-chip processing reduces latency and simplifies integration. Instead of relying on a single signal, the sensor builds a profile of returning light pulses to identify the most accurate distance point, ensuring stable performance even with smudged cover glass. Full histogram output supports AI systems in extracting hidden patterns or additional information from the raw signal.
