Abstract: Method of fixing a power light-emitting diode (1) having a metallic base (2) to a metallic heat-radiating element (3), according to which the base (2) of the light-emitting diode is fixed to the radiating element (3) by laser spot welding (11).

Abstract: An illumination optical system for illuminating a target surface using light from a light source, said illumination optical system includes a polarizing element that is arranged in an optical path from the light source to the target surface, and adjusts a polarization ratio of the light, and an optical element that is arranged in an optical path from the polarizing element to the target surface, wherein the total birefringence of the optical element is m+2?<1.0 nm/cm, where an average of birefringence amount of a glass material of the optical element is m, and standard variation birefringence amount of a glass material of the optical element is ?.

Abstract: A network including a host device and a plurality of transceiver satellite nodes for communicating data from terminal devices interacting with the nodes, to the host. The nodes include identification codes used by the host for establishing wireless communication links either between a node and the host, or between two or more nodes. The host includes a data store for storing identification codes of nodes. The host pages the nodes by their identification codes and, upon establishing communication with a node, the list of identification codes is passed to the node, which then pages other nodes which may be out of range of the host, which then receive the list and may page yet other nodes, until all listed nodes are linked into the network. A tag reader is connected or connectable to the host for reading tags associated with nodes and thereby capturing the identification codes of the nodes.

Abstract: The present invention discloses an image-forming optical system provided with a plurality of curved mirrors whereby two points at different distances are made to have an optically conjugate relationship, sequentially starting with a first conjugate point which is nearer when an optical path is traced from the first conjugate point to a second conjugate point which is farther, comprises, a first mirror which reflects luminous flux from the first conjugate point to transform the luminous flux into substantially parallel luminous flux, and a second mirror which reflects the luminous flux reflected by the first mirror while keeping the luminous flux substantially parallel.

Abstract: A stereoscopic display apparatus and method performs and includes, respectively, steps of dividing each of a plurality of parallax images supplied from a parallax image source having parallax image information into stripe pixels, displaying, on a display, a single stripe image by arranging and synthesizing some of the stripe pixels in a predetermined order, displaying a slit pattern consisting of a light-transmission portion and a light-shielding portion arranged at a predetermined pitch on a spatial light modulation element arranged at a predetermined position on the front or rear side of the display, inputting light transmitted through the stripe pixels, corresponding to the right and left eyes of an observer, of the stripe image to the right and left eyes of the observer via the spatial light modulation element and synchronously displaying the stripe pattern and the slit pattern in units of pixels or scan lines on corresponding scan lines of the display and the spatial light modulation element.

Abstract: A wire termination device for terminating insulated wires using insulation displacement contacts. The device may employ a pivotally mounted lever with a curved slot for receiving a pin or may employ a pivotally mounted rocker arm, movement of the lever and rocker arm effecting termination of the insulated wire by forcing the wire into engagement with the insulation displacement contact.

Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.