Microscope Objective 18/0.45

• 18× Magnification – The objective enlarges the specimen 18 times.
• 0.45 Numerical Aperture (NA) – A measure of the objective’s light-gathering ability and resolving power. An NA of 0.45 provides good resolution and brightness for a dry objective.

Many industrial, metallurgical, and inspection microscopes use objectives with uncommon magnifications such as 18× rather than the standard 10×, 20×, or 40×.

Typical Specifications

• Magnification: 18×
• Numerical Aperture: 0.45
• Type: Usually dry (air) objective
• Resolution: Approximately 0.7–0.8 µm depending on illumination wavelength.
• Common applications:
  • Industrial inspection
  • Semiconductor inspection
  • Materials science
  • Metallurgical microscopy