To: dwight martin who wrote (4011 ) 1/16/2000 11:48:00 AM From: dwight martin Read Replies (1) | Respond to of 7721
WWell, when I checked the url it worked, but it may just have been recalling pages stored by the browser. Here they are. The first I am not sure is particularly significant: United States Patent 5,982,528 Melville Nov. 9, 1999 -------------------------------------------------------------------------------- Optical scanner having piezoelectric drive Abstract A piezoelectric circuit drives mirror movement along a scan path. The scanner includes a support, a reflective surface and a piezoelectric circuit. The support alternately rotates about an axis of rotation in a first direction and a second direction. The reflective surface moves with the support. The piezoelectric circuit is mechanically coupled to the support, and includes a first piezoelectric volume and a second piezoelectric volume. During a first portion of a drive cycle drive signals of opposite polarity cause the volumes to deform in opposing manner. The deformation causes the support to rotate in the first direction. During a second portion of the drive cycle the polarity of the drive signals switches again causing the volumes to deform, but in opposite manner than during the first portion of the drive cycle. The deformation causes the support to rotate in the second direction. -------------------------------------------------------------------------------- Inventors: Melville; Charles D. (Issaquah, WA). Assignee: University of Washington (Seattle, WA). Appl. No.: 9,760 Filed: Jan. 20, 1998 United States Patent 5,913,591 Melville Jun. 22, 1999 -------------------------------------------------------------------------------- Augmented imaging using a silhouette to improve contrast Abstract An augmented display includes an image display source and a silhouette display source. The image display source generates a virtual image to be perceived by a viewer. The silhouette display source occurs in the path of the background light. The silhouette display source generates a mask corresponding to the image content of the image display. The mask is a darkened area reducing or blocking background light. As the light from the virtual image is overlaid onto the background, there is less background light in the portion where the image appears. -------------------------------------------------------------------------------- Inventors: Melville; Charles D. (Issaquah, WA). Assignee: University of Washington (Seattle, WA). Appl. No.: 9,759 Filed: Jan. 20, 1998 Display with multi-surface eyepiece Abstract An augmented retinal scanning display device includes a multi-functional eyepiece. One function is to direct an image beam onto a viewer's eye. Another function is to correct the vision of the viewer's eye. The display is worn by a viewing person. The eyepiece includes a reflective surface and a transmissive surface. An image beam reflects off the reflective surface onto the viewer's retina enabling the viewer to perceive a virtual image. Background light, such as from the ambient environment or another display device, enters the eyepiece at the transmissive surface and passes through the eyepiece toward the viewer's eye. While passing through the eyepiece, the background light is refracted to correct the viewer's vision. -------------------------------------------------------------------------------- Inventors: Melville; Charles D. (Issaquah, WA); Tidwell; Michael (Seattle, WA); Johnston; Richard S. (Issaquah, WA); Kollin; Joel S. (Long Island City, NY). Assignee: University of Washington (Seattle, WA). Appl. No.: 72,417 Filed: May 4, 1998