Abstract
A fiber-optic 3D confocal scanning microendoscope employing MEMS scanners for both lateral and axial scan was designed and constructed. The MEMS 3D scan engine achieved a lateral scan range of over ±26° with a 2D MEMS scanning micromirror and a depth scan of over 400 μm with a 1D MEMS tunable microlens. The lateral resolution and axial resolution of this system were experimentally measured as 1.0 μm and 7.0 μm, respectively. 2D and 3D confocal reflectance images of micro-patterns, micro-particles, onion skins and acute rat brain tissue were obtained by this MEMS-based 3D confocal scanning microendoscope.
| Original language | English |
|---|---|
| Pages (from-to) | 89-95 |
| Number of pages | 7 |
| Journal | Sensors and Actuators A: Physical |
| Volume | 215 |
| DOIs | |
| Publication status | Published - 15 Aug 2014 |
| Externally published | Yes |
Keywords
- 3D confocal imaging
- 3D microendoscope
- Bimorph
- Electrothermal actuator
- MEMS mirror
- MEMS tunable lens