An optical signal having construction and components and employing relatively long wavelength radiation. An aspheric lens and waveguide laser provide long range capability with low power requirements making battery operation practical.
申请公布号
US4638508(A)
申请公布日期
1987.01.20
申请号
US19780895407
申请日期
1978.04.10
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY