| 摘要 |
PURPOSE:To obtain an output beam of uniform space intensity distribution in an high-power laser also, by accommodating a pin-hole of a sending signal optical telescope of a laser radar in a vacuum vessel. CONSTITUTION:Laser beams 12 from a laser generator 11 are commonly emitted from a sending signal optical system telescope, such as eye-piece 14, convex lens 13, pin-hole space filter 13-3 etc. located between said both lenses. This filters 15-3 is contained in a vacuum vessel 15-4, free from breakages, such as break-down of air, even in a high-power laser. Consequently, even in the high-power laser, a laser output beam of uniform space intensity distribution is obtained. |
