Multi-function observation, ranging, and sighting device

摘要

A multi-function day/night observation, ranging, and sighting device (10) with active acquisition of optical targets includes a single objective lens (28) and a single eyepiece lens (30) and provides an image of a scene. The single objective lens leads to a visible-light first optical path that converges with an invisible-light second optical path at a reticule plane. The invisible-light second optical path includes an image intensifier tube (50) providing a visible image. Pulses of laser light (22) are projected into the scene via the single objective lens (28), and the image intensifier tube (50) is used as a detector.