| 摘要 |
PURPOSE:To bring a display and an input device in apparent proximity to each other and to improve the efficiency of an input work by providing prisms to a lower half part of a visual field and forming the virtual image of a lower object adjacently to the image in the upper half part of the visual field by the refraction of the prisms. CONSTITUTION:The spectacles for the work are constituted of glass 1 in the upper half part of the visual field and the prisms 2 in the lower half part. When an operator wears the spectacles, the operator is able to view the display device 7 in a direction 81 and to view the input device 6 which is intrinsically ought to be viewed in a direction 82, as the virtual image a apparently in a direction 83 by the refraction of the prisms 2. The display 7 and the input device 7 which are apart from each other in actuality appear to be adjacent to each other. The operator is, therefore, able to alternately view the display device 7 and the input device 6 even without moving his head. Just a slight movement of the line of vision is, therefore, necessitated. The efficiency of operator's input work is improved and his fatigue is lessened. |
