| 摘要 |
A spotlighted position detection system and simulator which can eliminate the influence of unnecessary light such as an external light and exactly detect a spotlighted position. There is provided a game machine which comprises: a half mirror as a display screen which transmits a spotlight or an infrared light from a ray gun and reflects a light for images from a CRT; an infrared transmission filter as a light filter which is disposed on a backside of the half mirror and transmits the spotlight but does not transmit an external light; a spotlight screen on which the spotlight transmitted through the half mirror and the infrared transmission filter is projected to form an image, the spotlight screen being disposed at a position near the backside and within the game machine; and a CCD camera which takes a spotlighted area on the spotlight screen corresponding to an image area.
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