Abstract Laser-transmitting-receiving apparatus which includes a transmitter and a receiver. In the transmitter the laser beam path is divided into three parallel sections, the first and second of which lie in a common plane and the second and third of which lie in a common plane. The third section exits from the apparatus. In the first section is a Q-switch prism and a deflector, In the second section is a deflector, a ruby rod and a plane plate resonator. In the third section is a deflector and a telescopic optical arrangement. The receiver provides a beam part including two consecutive and parallel sections. In the first section is a receiving objective and an aperture-providing device as well as a deflecting mirror. In the second part is a deflecting mirror, a lens, an interference filter and a photomultiplier.
Apparatus as claimed means claim 1 wherein said respective planes are perpendicular to each other and define an angle in which said receiving means is located.
Claim 2
Dependent Claim
26 words
Apparatus as claimed in claim 2 wherein the said first and second sections are in a plane which is at approximately 45* to the other planes.
Claim 3
Dependent Claim
67 words
Apparatus as claimed in claim 2 wherein said receiving means includes a receiving objective, aperture means and deflecting means forming said first section, said received beam passing through said aperture means to said deflecting means, and deflecting means, lens means, an interference filter and a photomultiplier forming said second section, the beam passing through said deflecting means, said lens means, and said interference filter to said photomultiplier.
Claim 4
Dependent Claim
125 words
Apparatus as claimed in claim 1 wherein said transmitting means comprises a Q-switch prism and deflection means forming said first part; said deflection means of said transmitting means being located to receive the beam output of said Q-switch prism, deflEcting means, a ruby rod, a plane plate resonator, and further deflecting means forming said second part, the beam in said transmitting means passing through said deflecting means, said ruby rod, said plane plate resonator, and said further deflecting means of said second part; and deflecting means and telescopic means forming said third part; the beam in said transmitting means passing through said deflecting means and said telescopic means of said third part, said deflecting means cooperating with each other to deflect the beam between parts.