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Role of the Objective Lens
The objective lens is one of the most critical components in a confocal Raman microscope, directly determining mapping performance and data quality.
• Lateral Resolution (XY): Defines the smallest separation between two points on the sample surface that can be distinguished during Raman mapping. A higher NA enables finer lateral resolution, allowing highly detailed chemical distribution maps.
• Axial Resolution (Z): Describes the ability to resolve features at different depths within the sample. This is essential for depth profiling and 3D Raman imaging, enabling precise separation of layers in complex structures.
• Signal Collection Efficiency: High NA objectives gather more scattered photons, resulting in stronger Raman signals, better signal-to-noise ratios, and shorter acquisition times.
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Objective Lens Selection Guide
• Magnification Options: 10x, 20x, 40x, and more
• Numerical Aperture (NA): Ranging from 0.25 to 0.9
• Working Distance (WD): Long- and short-working distance options
• Cover Glass Correction: Important in biological or liquid samples.
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We offer an extensive range of objective lenses and, through expert consultation, provide solutions optimized for your experimental goals,sample types, applications, and wavelength requirements.
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