It is a high-magnification and high-resolution imaging objective lens (air medium) with a numerical aperture of 0.7, which is close to the performance of an oil immersion lens (no need for immersion oil). The correction collar ensures the imaging quality of thick coverslips/samples.

Applications:
Suitable for high-resolution observation of nuclear chromatin and small particle fluorescent markers (such as virus-like particles), providing a solution for "high-magnification imaging without oil immersion lenses".