Nonscanning three-dimensional optical microscope based on the reflectivity-height transformation for biological...

Area of Science:

• Optical microscopy
• Metrology
• Surface characterization

Background:

• Traditional 3D microscopy often involves scanning, which can be time-consuming.
• Accurate surface height measurement is crucial for biological and material science applications.

Purpose of the Study:

• To introduce a nonscanning 3D optical microscope.
• To demonstrate its utility in measuring biological specimens and transparent plates.

Main Methods:

• Utilized reflectivity-height transformation based on geometrical optics and internal reflection.
• Employed charge-coupled device cameras to capture 2D image and reflectivity patterns.
• Generated 3D surface profiles by combining image and reflectivity data.

Main Results:

• Achieved lateral resolution limited by diffraction.
• Demonstrated vertical resolution better than several nanometers.
• Successfully generated 3D profiles from reflectivity patterns.

Conclusions:

• The proposed nonscanning method offers an efficient approach for 3D surface profiling.
• This technique is suitable for both biological samples and transparent materials.
• The method provides high vertical resolution for detailed surface analysis.