초록 ▼

A dual mode antenna that allows both millimeter wave and infrared radiation to enter a single aperture and propagate through a common transmission device to a point where the respective energies are divided to follow separate paths for subsequent processing. An electromagnetic transmission guide or

A dual mode antenna that allows both millimeter wave and infrared radiation to enter a single aperture and propagate through a common transmission device to a point where the respective energies are divided to follow separate paths for subsequent processing. An electromagnetic transmission guide or waveguide for the system comprises a tubular waveguide member, having a beam directing lens or lenses therein, for maintianing low-loss, gaussian beam propagation of millimeter wave energy therethrough. A waveguide fiber array is coupled into or adjacent to the tubular member at one end and retrieves the infrared radiation but allows the millimeter wave radiatin to pass. Cassegrainian optics are positioned adjacent the other end of the tubular member for directing incoming millimeter and infrared energy into the guide. Subsequently, the energy impinges on the beam directing lens means that separates the respective energies, dividing them into two separate and distinct paths.

대표청구항 ▼

An electromagnetic energy transmission system for transmission of millimeter wave and infrared electromagnetic energy comprising: a waveguide housing for simultaneously guiding both millileter wave and infrared radiation therein, said waveguide housing having first, second, and third ports for coupl

An electromagnetic energy transmission system for transmission of millimeter wave and infrared electromagnetic energy comprising: a waveguide housing for simultaneously guiding both millileter wave and infrared radiation therein, said waveguide housing having first, second, and third ports for coupling energy to and from said guide; beam directing means disposed within said housing for directing said energy selectively between said first port and said second and third ports; said beam directing means being a lens and a waveguide fiber bundle, a first end of said bundle being disposed in staring array in a focal plane of said lens remote from said parallel to said lens, the lens being disposed between said waveguide bundle and said first port; said lens and said end of the waveguide bundle selectively directing impinging infrared energy along a path defined by said bundle while being transparent to impinging millimeter waves; said first and second ports being coaxial and said third port being normal to the axis of said second and first ports, said fiber bundle being coupled through said third port for coupling infrared energy therethrough, said second port being transparent to millimeter wave energy, and said first port being transparent to both millimeter wave and infrared radiation.