Microscope Objective

As standard the OpenFlexure Microscope uses a finite conjugate, plan corrected, Microscope objective, with 45mm parfocal length. The magnification depends on what you want to look at. We recommend 40x, as with lower magnification the microscope stage may be very slow.

You may run into issues if you purchase objectives that:

• Do not specify they are Plan corrected.
• Specify a 185mm conjugate distance (Some low cost objectives simply use the number 185 in the product description). These have a 35mm parfocal length and need a modified optics module.
• Have a magnification that is below 20x. The standard illumination does not fill the field of view of lower magnification objectives. It is possible to defocus the illumination to increase the illuminated area, but this will negatively affect resolution.

See our information page about how the OpenFlexure optics are designed for further information.

Specifications