| 摘要 |
A multi-function day/night observation, ranging, and sighting device (10) includes a single first lens (28) and a single eyepiece lens (30) and provides an image of a scene (16). The single first lens (28) leads to a visible-light first optical path (66, 70, 72, 78) and to an invisible-light second optical path (50, 84, 86, 78). The invisible-light second optical path (50, 84, 86, 78) includes an image intensifier tube (50) providing a visible image. The first and second optical paths (66, 70, 72, 78/50, 84, 86, 78) converge with visible images provided by each pathway being overlaid at a reticle plane (74). A single light path (80) leads from the reticule plane (74) to the eyepiece lens (30). A laser (136) provides a pulse of laser light projected into the scene via the single first lens (28), and the image intensifier tube (50) is used as a detector for a portion of the laser light pulse.
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