Hardware architecture and cutting-edge assembly process of a tiny curved compound eye

Area of Science:

• Robotics and Sensor Technology
• Biomimetic Engineering
• Micro-scale Systems

Background:

• Increasing demand for bendable sensors in soft and micro-scale robotics.
• Need for advanced artificial vision systems inspired by biological models.

Purpose of the Study:

• To provide a detailed presentation of the flexible, functional, insect-inspired curved artificial compound eye (CurvACE).
• To elaborate on the sensor's design, fabrication, and performance characteristics.

Main Methods:

• Detailed description of the Very Large Scale Integration (VLSI) sensing layout.
• Accurate assembly fabrication process using planar configuration for high alignment.
• Development of a fast read-out interface and characterization of photodetector response.

Main Results:

• CurvACE sensor: 180° × 60° field-of-view, 630 ommatidia, 1.75 g weight, 0.9 W power consumption.
• Achieved high-speed visual motion sensing (1950 frames per second) across a five-decade illuminance range.
• Demonstrated auto-adaptive dynamic response to light changes.

Conclusions:

• The CurvACE sensor offers unique performance for soft and micro-scale robotics applications.
• Its auto-adaptive feature is highly relevant for real-world indoor and outdoor environments.
• The fabrication process ensures compatibility with state-of-the-art assembly techniques.