Abstract: A marking device includes a frame which supports a reflector member therein for being supported on a stake to be penetrated into the ground, for example for marking driveways. The frame is operable between open and closed positions to readily release the reflector member therefrom. Several frames can be stacked on a common stake by modular interconnection between adjacent frames in which some frame may support reflectors and other frames are suitable for retaining a cable extending therethrough. In this instance when a plurality of marking devices are penetrated into the ground at spaced positions in a row, a common cable, for example an electrical extension cord or a string of lights can be threaded through empty frames in the row to be supported spaced above the ground.

Abstract: A marking device includes a frame which supports a reflector member therein for being supported on a stake to be penetrated into the ground, for example for marking driveways. The frame is operable between open and closed positions to readily release the reflector member therefrom. Several frames can be stacked on a common stake by modular interconnection between adjacent frames in which some frame may support reflectors and other frames are suitable for retaining a cable extending therethrough. In this instance when a plurality of marking devices are penetrated into the ground at spaced positions in a row, a common cable, for example an electrical extension cord or a string of lights can be threaded through empty frames in the row to be supported spaced above the ground.

Abstract: A reduced dispersion optical waveguide and methods of fabricating the same are implemented. The optical waveguide may be fabricated in commercially practicable units without having to predetermine its length in a particular application. The reduced dispersion optical waveguide prevents optical pulse overlap in optical waveguide transmission systems operating over long distances or at high data rates.

Abstract: Conventional display technology can be used to display crude computer generated holograms (CGH), and can be extended to moving displays. However, the ones best suited from the standpoint of illumination flexibility, such as the common Liquid Crystal Displays (LCDs), switch very slowly. Thus systems with far better dynamic—rapid response requires very complex drive electronics. A non-memory ceramic PLZT, dynamic holographic display medium, provides much faster response time relative to common LCD technology. This system, which is the major embodiment of the present invention, also exhibits good spatial display capability. The system of the present invention, can display Fast Fourier Transformation (FFT) Computer Generated Holograms (CHHs); thus allowing the use of FFT based manipulation of images.

Abstract: A reduced dispersion optical waveguide and methods of fabricating the same are implemented. The optical waveguide may be fabricated in commercially practicable units without having to predetermine its length in a particular application. The reduced dispersion optical waveguide prevents optical pulse overlap in optical waveguide transmission systems operating over long distances or at high data rates.