| 摘要 |
A method and system for forming a focused image on an image plane of a diffraction range finder with a variable pitch diffraction grating. The system includes the variable pitch diffraction grating and a slit through which diffracted light may traverse after having been diffracted by the diffraction grating, wherein the diffracted light is configured to form a focused image on an image plane of a camera after traversing the slit. The method propagates the diffracted through the slit and onto the image plane of the camera, wherein the diffracted light had been diffracted by the variable pitch diffraction grating.
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