3DToF module solution: Taking intelligent lighting from "sensing" to "understanding"

The global smart lighting market is accelerating its transition from a function-driven model to an experience-driven one. According to data from MordorIntelligence, the market size is expected to increase from $22.98 billion in 2025 to $56.63 billion in 2030, with a compound annual growth rate of 19.77%. The main driving forces for growth come from the deployment of smart city infrastructure, the maturity of sensor fusion technology, and the upgrading of end-users' demand for "perceptual understanding" lighting experiences. The Sensoric Technology of the Semiconductor Microchip Sensor Division has launched a 3DToF module solution for smart lighting terminals based on its self-developed dToF chip series. This solution encapsulates deep perception capabilities as standardized components, aiming to lower the sensor integration threshold for lighting manufacturers and accelerate the intelligent iteration of products. 

I. Core Capabilities of 3DToF Module Solution

1. Precise Distance Measurement, Supports Continuous Dimming Strategy

Solutions targeting presence detection usually output "person present" or "person absent". The 3DToF module solution can provide real-time precise distance values between the target and the lamp, providing a data foundation for precise lighting control:

· When the user approaches, the light brightness increases smoothly as the distance decreases

· When the user moves away, the light brightness decreases smoothly

· When the user sits and reads, the stable illumination output is maintained

The lighting experience evolves from on-off switching to continuous adjustment, improving comfort while optimizing energy consumption performance.

2. High Frame Rate Response, Enhances Interaction Experience

The module supports a measurement frequency of 200Hz, ensuring that human movements are captured and responded to in a timely manner. Whether it's a quick passage in the corridor or reaching for an item on a bookshelf, the lighting control instructions can respond promptly. Industry research shows that end users have a high expectation for the reliable response of the lighting system, and high frame rate detection provides technical support for such experience requirements.

3. Compact Size, Compatible with Lamp Integration Constraints

Compact lamps such as ceiling lamps and spotlights have strict requirements for internal space utilization. The sensor size directly affects the freedom of product industrial design. Thanks to the micro-miniaturization process at the chip level, the size of this solution module has been significantly compressed, allowing it to be installed on the existing PCB surface of the lamp without requiring large-area openings or external protrusions.

II. Product Selection Matrix

To cover the range and functional requirements of different lighting scenarios, a complete product sequence from chips to modules is provided. The three dToF chips M8001, i2001, and R5001 are designed based on differentiated architectures, forming a stepped solution from close-range single-point measurement to long-range multi-area perception. Lighting equipment manufacturers can select flexibly based on product positioning.

III. Typical Application Scenarios

1. Corridors/Stairwells

Accurately sense when a person approaches and enable non-intrusive lighting activation. The night mode can be configured as "dimming after 30 seconds of no movement", balancing energy conservation and safety requirements.

2. Study Rooms/Office Areas

Continuously detect minor body movements to ensure that lighting is maintained when people are sitting for reading or working at their desks, suitable for long-term static work scenarios.

3. Bathrooms/Clothing Storage Rooms

High frame rate detection accurately determines whether a person is still in the space. Even if the user is in a stationary state (such as looking at a phone), the lighting system can continue to provide service.

4. Children's Study Lamps

Real-time monitor the distance between the child's head and the desk. When the distance is below the preset threshold, the light emits a reminder through flashing; the lights turn off automatically after the user leaves to save energy.

5. Museums/Exhibition Halls Lighting

Antiquities and artworks are sensitive to cumulative light exposure. The module can accurately sense the presence of visitors in the exhibition area. When there are no visitors, the lighting can be automatically turned off or dimmed to achieve energy conservation while reducing light damage. 

IV. Summary of Scheme Value

The core competence of lighting fixture manufacturers lies in optical design and optimization of lighting experience, rather than in the in-depth development of sensor underlying algorithms. The 3DToF chip and module solution provided by the Semiconductor Division of Siyuan Microchip encapsulates distance sensing, motion discrimination, and high-speed response capabilities as standardized components, aiming to assist customers in:

· Shortening the integration and algorithm calibration cycle of sensors

· Reducing R&D investment and engineering risks

· Accelerating the market launch of lighting products with differentiated sensing capabilities