Passive optical range simulator device

Details Passive optical range simulator device Passive optical range simulator device

G - Physics

01

C

33/1, 343/1

G01C 3/08 (2006.01) G01J 1/02 (2006.01) G01S 1/70 (2006.01) G01S 7/497 (2006.01) G01S 17/02 (2006.01)

Patent

CA 1109142

AN IMPROVED PASSIVE OPTICAL RANGE SIMULATOR DEVICE ABSTRACT OF THE DISCLOSURE An improved passive optical range simulator device which can be used to test the ranging function of an optical radar ranger system having parallel beams leaving and entering. An adapter member provides for mechanical coupling and optical alignment of the simulator device with the ranger system. A focusing lens transforms parallel beams entering and leaving the ranger system into focused beams entering and leaving one end of a coil of optical fiber having a mirror at its opposite end to act as an optical delay medium. A primary tilted-glass-element optical attenuator limits optical energy allowed to reach the optical fiber entrance face, while deflecting first surface reflection away from ranger system input. A removable attenuator assembly having oppositely-tilted flat glass elements at the fiber entrance face permits, by substitution, fine adjustment of beam attenuation. An X-Y-Z translation assembly for the fiber entrance face, together with a light source at the opposite end of the fiber, provides for proper alignment with the focused beams.

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