| 摘要 |
PROBLEM TO BE SOLVED: To always confirm the lighting state of the tally lamp of the television camera from every surrounding direction even when the tally lamp is showered with the light of a bright spotlight. SOLUTION: The emission directions of the tally lamps 4, 6, 7, 8 are selected to be a plurality of directions including at least an image pickup direction of a television camera 1.
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