| 摘要 |
PURPOSE:To eliminate external light in reading of a VDT (computer display), and to execute easily the reading by making a visual field adjustable by a slit or a hole. CONSTITUTION:In order to fix hollow boxes or cylinders 1, 2 whose top and side faces have been light-shielded, in front of eyes, eyes are held and installed by ears or a head part. To a surface 3 formed by cutting said hollow box or cylinder into round slices, a slit card 4 or a holes card 5 for adjusting a visual field is fixed so that it can be replaced. In this state, a light quantity adjusting part is formed by the slit card 4 or the holed card 5, on a gazing line of spectacles, so that only light from an image is made to pass through. |
