Objective lenses come in various types, each designed for specific purposes. The most common types include:
1. Achromatic Lenses: These lenses correct for chromatic aberration at two wavelengths, typically red and blue, providing clear and sharp images for histological examination. 2. Apochromatic Lenses: These offer superior correction for both chromatic and spherical aberrations across three or more wavelengths, resulting in highly accurate color reproduction. 3. Plan Lenses: Designed to produce a flat field of view, these lenses are especially useful in histology where a broad, even focus is required. 4. Fluorite Lenses: Known for their excellent image quality and high numerical aperture, these lenses are ideal for fluorescence microscopy.
