Abstract: A golf putter head including a lower plate-like member made of heavyweight material such as bronze or steel and an upper shell-like member made of lightweight material such as wood, aluminum or plastic. A heel weight and a toe weight are mounted on the lower plate-like member adjacent its heel and toe ends, respectively. The heel and toe weights extend upwardly and are preferably made of the same heavyweight material as the lower plate-like member. A socket is formed in the heel weight for receiving a lower end of a golf putter shaft, and a hole is formed in the upper shell-like member in alignment with the socket to permit the shaft to pass through the upper shell-like member. The putter head has a low center of gravity and a high resistance to torque.

Abstract: A head-mounted display (10). A spatial light modulator (12) generates the image to be viewed. A projection lens (14) projects the image to a rear projection screen (16), which diffuses the image to accommodate the spacing and size of the viewer's eyes. The image is reflected by a beam splitter (17) to a curved reflector (18) in front of the viewer's eyes. The reflector (18) reflects the image through the beam splitter (17) in parallel rays so that the image appears to be distant, and also magnifies the image to provide a wide field of view.

Abstract: A three dimensional display having a rotating screen, preferably helical in shape, a light source providing a beam of light and a holographic pattern deflecting the beam of light to predetermined points on the screen. The light is modulated, preferably by the holographic pattern. The holographic pattern rotates with the same angular velocity as the screen. The holographic pattern comprises a plurality of concentric circles, each of the circles comprising a plurality of cells, each of the cells representing a point on the screen.

Abstract: There is disclosed a method and system for controlling the optics of a coherent light source impacting a three dimensional defined volume. The system uses a scanner to time and spatially position the coherent light. The divergent light beam output of the scanner is then placed through positive and negative lenses to narrow the beam waist while also increasing the divergence angle of the beam. Provision is made to abate the divergence angle so that the light, as it impacts the defined volume, will not continue to diverge, creating a skewed image within the volume.

Abstract: There is disclosed a method and system for controlling the optics of a coherent light source impacting a three dimensional defined volume. The system uses a scanner to time and spatially position the coherent light. The divergent light beam output of the scanner is then placed through positive and negative lenses to narrow the beam waist while also increasing the divergence angle of the beam. Provision is made to abate the divergence angle so that the light, as it impacts the defined volume, will not continue to diverge, creating a skewed image within the volume.

Abstract: There is disclosed a method and system for controlling the optics of a coherent light source impacting a three dimensional defined volume. The system uses a scanner to time and spatially position the coherent light. The divergent light beam output of the scanner is then placed through positive and negative lenses to narrow the beam waist while also increasing the divergence angle of the beam. Provision is made to abate the divergence angle so that the light, as it impacts the defined volume, will not continue to diverge, creating a skewed image within the volume.