| 摘要 |
PROBLEM TO BE SOLVED: To provide a display system with which both of primary information and the secondary information related to the primary information can be simultaneously viewed, whose movement by the mounting on a vehicle or the like becomes easy by saving space of the system and by making the system lightweight and whose operating efficiency can be enhanced by expanding the field of activities of an operator. SOLUTION: Plural primary information are displayed on a screen 2b which is arranged independently from an operator 3. Then, arbitrary primary information is instructed by displacing an instruction image 7 to be displayed on the screen 2 by an instruction signal from an input means 4c which is carried or attached by or to the operator 3. The secondary information stored by being related to the instructed primary information is displayed by a head-mounted display device 5 which is mounted on the operator 3.
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