| Compound Microscope | |
| Object lens | Higher power |
| Eye lens | Lower power |
| Position of the object | The object is placed at a position between fo and 2fo. |
| Nature of the image, I1 | Real, inverted and magnified |
| Position of the image, I1. | The first image, I1 must be placed between the optical center of the eye lens with the eye lens principle focus point, fe. |
| Nature of the image, I2 | Virtual, inverted and magnified |
| Distance in between the two lens | The distance between the object lens and the eye lens in a compound microscope is bigger than the sum of the focal length (fo + fe). If the distance between both lenses are adjusted to less than (fo + fe), no image can be seen. |
| Magnification of the compound microscope. |
m1 = Linear magnification of the object lens |
