| 摘要 |
It is an object of the present invention to provide an occupant protecting apparatus capable of safely controlling the operation method with a simple structure. The occupant protecting apparatus comprises infrared beam emitting means (11) disposed on an upper portion of an occupant room of a vehicle at a position diagonally rearward of a position of a passenger seat for emitting infrared beam, infrared beam detecting means (16) disposed on a position offset from the infrared beam emitting means for detecting a position of a light spot generated in such a manner that flat infrared beam impinges an occupant on a seat and scatters, and control means for obtaining a size of the occupant or a three-dimensional shape of sitting position or the like from output of the infrared beam detecting means to control motion of a protecting apparatus such as an air bag (3).
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