| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide a cover attached to a head-mounted type display device having a see-through function and capable of simultaneously preventing reduction of visibility of a display image due to exterior light of a background of the display image and reduction of visibility of the display image due to appearance of exterior light regularly reflected on an emission surface of an optical element on the optical element and allowed to be attached/detached to/from the head-mounted type display device in single operation by a simple structure.SOLUTION: The cover for preventing reduction of visibility due to exterior light includes a first member provided with a filter function for shielding or extinguishing exterior light of a background of a display image and a second member provided with a filter function for shielding or extinguishing exterior light reflected on the emission surface of the optical element and is allowed to be attached/detached to/from the heat-mounted type display device in single operation. |
