| 摘要 |
<p>An integrated night vision device and laser range finder (10) provides both night-time and day-time imaging by use of an image intensifier tube (14), as well as providing laser range finding operations both day and night. In a laser range finder mode of operation the device (10) projects a pulse of laser light into a scene being viewed, and a power supply and laser range finder circuit (62) of the device (10) temporarily utilizes the image intensifier tube (14) as a sensor to detect reflected laser light. During laser range finding, imaging is cut off for a very short time interval. During imaging operations, the power supply and laser range finder circuit (62) operates the image intensifier tube (14) in a unique way to provide both improved automatic brightness control (ABC) and improved bright-source protection (BSP). The ABC and BSP functions are coordinated with the laser range finding function.</p> |
