MAGUS SFR50 50х/0.70 Plan L Pol ∞/0 objective

An objective for studying samples in polarized light, with transmitted or reflected light. When making the lenses of the polarizing objectives, the development of internal tension can be avoided, so the optical elements do not create birefringence and do not affect the observation.

The resolution limit of MAGUS SFR50 with 50x magnification is 0.39 µm. It was designed for an infinity-corrected optical system with a parfocal distance of 45 mm. It is not necessary to cover the sample with a cover glass during observation.

The plane-achromatic lens corrects distortion: chromatic distortion in red and blue, spherical in green, and geometric in 90% of the image area. The lens provides a wide and clear field of view. Suitable for pairing with a system that includes a digital camera or 22mm wide-field eyepiece. The 10x/22 mm eyepiece provides a 0.44 mm field of view. The image will be equally clear in the center and at the edges.

The useful magnification of this lens is between 350x and 700x. To achieve the desired magnification, use an eyepiece with a magnification between 7x and 15x. Due to the lower magnification eyepiece, the sample examination will not be effective. A magnification higher than 15x will not provide new data.

Specifications
- Lens material: optical glass
- Lens class according to aberration correction: plane-achromatic
- Tube length: corrected to infinity (∞)
- Contrast technique: polarized light
- Degree of magnification, (multiplier): 50
- Aperture: 0.70
- Working distance, mm: 3.67
- Parfocal distance, mm: 45
- Cover glass thickness, mm: without cover glass
- Frame with spring structure: +
- Immersion: −
- Frame material: copper

Compatibility
- MAGUS Pol 850 polarizing microscope