| 摘要 |
The invention relates to a binocular night telescope of the type which comprises a large aperture objective (1), a light amplifier tube (2) for amplifying the image projected by said large aperture objective and a viewing microscope which comprises telescope objectives (9, 10) and oculars (11, 12) as well as a collimating objective (6) for focusing the amplified image at infinity for an observer. The viewing microscope also comprises prisms or mirrors for erecting the image vertically as well as in side. At least a part of the prisms (7, 8) for erecting the image in side are axially displaced so that they are located at the side of, above or below the light amplifier tube (2) depending on the orientation of the microscope. This means that the entire instrument is shorter and the center of gravity is moved forwards. The telescope objectives (9, 10) and oculars (11, 12) are also so designed that the exit pupil has a diameter of at least 7 millimeters, preferably 7-12 millimeters, which means that no rotatable prism houses for adjusting the eyes distance are required so that the instrument is more simple and easy to handle. |
