Technological Platform for Vertical Multi-Wafer Integration of Microscanners and Micro-Optical Components

Area of Science:

• Optoelectronics
• Micro-electro-mechanical systems (MEMS)
• Optical engineering

Background:

• Miniaturization of optical microscopes is crucial for portable and integrated diagnostic tools.
• Existing technologies face challenges in integrating diverse optical and mechanical components efficiently.
• On-chip microscopes require advanced assembly methods for high-density component integration.

Purpose of the Study:

• To present an original technological platform for the miniaturization of micromachined on-chip optical microscopes.
• To demonstrate a vertical integration approach combining micro-optics and MEMS.
• To provide a scalable and cost-effective solution for integrated microscopy.

Main Methods:

• Utilizing a multi-wafer vertical integration approach.
• Incorporating integrated glass-based micro-optics and micro-electro-mechanical systems (MEMS) components.
• Employing heterogeneous bonding and interconnecting technologies for component assembly.

Main Results:

• Successful integration of diverse components (microlens, MEMS actuator, beamsplitter) in vertically stacked building blocks.
• Demonstration of a compact platform enabling high optical performance.
• Achieved miniaturization of laser scanning confocal microscopes and similar devices.

Conclusions:

• The developed platform offers a viable solution for creating miniaturized, low-cost on-chip optical microscopes.
• Integration of MEMS actuators with micro-optics is key to advancing integrated microscopy.
• This approach holds significant potential for applications in biomedical diagnostics and portable imaging systems.