These microscope objectives are for use without a cover glass. Biological microscope objective lenses are normally designed for use with a thin glass cover slide placed on top of the sample being examined. Biological and medical microscope objectives specifically correct this and are therefore not suitable for other uses.
Our Mid-IR focusing objectives are designed to provide maximum coupling efficiency in coupling the output from a Mid-IR source into fibre. These precision achromatic objectives are anti-reflection coated and cover a range of numerical apertures. They are housed in conventional microscope barrels and are fitted with a standard RMS microscope thread.