Perspective image acquisition device

The embodiment of the invention provides a perspective image acquisition device. The perspective image acquisition device comprises a ray emitting mechanism, a supporting arm and a ray receiving mechanism, and the ray emitting mechanism comprises a ray emitter and a first beam limiting device positioned on one side of an emitting surface of the ray emitter. The width of the imaging surface of the ray receiving mechanism in the first direction is larger than that in the second direction, a preset included angle is formed between the first direction and the second direction, and the first direction of the imaging surface is consistent with the detection direction of the to-be-detected object when the to-be-detected object is in the detection state. Meanwhile, the width of the first beam limiting window in the third direction is larger than that in the fourth direction, and when the first direction of the imaging surface is consistent with the detection direction, the third direction of the first beam limiting w