Stereoscopic microscope for two observers - has four identical afocal viewers with lenses and eyepieces above collimating lenses

摘要

The stereoscopic microscope allows the same area to be observed simultaneously by two persons. It comprises lens or a group of collimating coaxial lenses above the area, and a group of two afocal viewers, each with a lens and an eyepiece working with an optical erecting device. Above the collimating lenses (3) are fource identical afocal viewers (7a, 7c), each with a lens and eyepiece, and so arranged that their centres on the corners of a square or rectangle centred on the optical axis (X-X) of the collimating lenses.