| 摘要 |
The present invention relates to an eyepiece extension for optical devices, in particular for telescopes and microscopes, comprising at least one housing having at least one cylindrical opening as part of at least one focusing basic body and at least one cylindrical inner tube as eyepiece extension tube, wherein the inner tube is movable in the housing along the longitudinal axis of the housing, wherein the at least one housing opening has a prismatic inner surface and the at least one inner tube has a prismatic lateral surface, wherein the inner tube is movable in the housing opening along the sides of the respective prismatic surfaces. |
