Abstract: An optical system in which arrays of pseudo-corner cube retro reflectors are used to provide optical feedback of the horizontal and vertical positions of a scanning beam. The arrays of reflectors are located above and below the path of the scanning beam near the photoreceptor. The horizontal and vertical position information is then used to correct the alignment of the scanning beam.

Abstract: A light pattern generating system based on a micromechanical light modulator (50) is disclosed whereby the outputs of two staggered rows of modulator mirrors are optically combined to produce a single line pixel pattern. The preferred embodiment contains birefringent film (28) deposited onto one row (20) of two rows of modulator mirrors (20) so they rotate the incident beam (41) polarization by 90 degrees. The reflections off that row of mirrors (20) and off an unaltered mirror row (25) are then optically combined by a birefringent optical element (36) into a single line pixel pattern. Another embodiment features splitting the linearly polarized incident light beam (41) into two orthogonally polarized beams (45) and (47) by utilizing a berefringent beam splitter (44), illuminating two rows of mirrors (20) and (25) separately, and then optically re-combining their outputs with either conventional mirrors and beam splitters, or a berefringent optical element (36).

Abstract: A compact dual sputtering device which has two adjacent sputtering sections within a housing. The sputtering sections are arranged along a common axis with each section having a ring magnet circumscribed around the axis and a pole magnet, the center of which generally extends along the axis. The ring magnets are axially spaced from each other and the pole magnets are axially spaced from each other with each pole magnet being surrounded by a respective one of the ring magnets leaving a generally annular space between each of the pole magnets and a respective one of the ring magnets. Each section has a target area located on the outer surface of the housing at opposite axial ends of the housing. The housing has fluid inlet means and fluid outlet means and passage means connecting the annular space of one sputtering section with the annular space of the other sputtering section.

Abstract: A process for making a tip microstructure in amorphous silicon or polysilicon. A layer of nitride is first deposited on the amorphous silicon or polysilicon. Then the amorphous silicon or polysilicon is roughly patterned to form the base of the tip structure. the tip is carved out of the amorphous silicon or polysilicon by using an oxide growth process that is controlled by the amount of dopant in the amorphous silicon or polysilicon. After the tip is carved, the oxide is stripped away exposing the tip.

Abstract: An optical system in which optical circulators with polarization plates are used for light modulation of plane polarized light waves. The light modulation is used for black and white printing, grey scale printing and for adjustment of beam intensity of plane polarized light waves.

Abstract: An optical fiber containing intrinsic alignment features is disclosed. The fiber comprises a core, cladding layer, cladding insert or inserts, and a jacket. The outer shape of the tip of a fiber can be altered by etching away the jacket and cladding insert or inserts. The respective solubilities of the cladding insert and the cladding layer in etchants are selected to provide control of the resulting fiber shape upon completion of etching.

Abstract: A process for making a micromechanical generally bowl shaped or round shaped element upon a substrate by providing a member having a generally planar surface and walls extending from the surface Bumpers are then grown into the walls. The generally round shaped oxide bumpers form a generally bowl shaped convexo-concave relationship with the walls. The walls are covered on their outer periphery with a material which is resistant to the growth of the bumpers to control the growth of the bumpers at the periphery of the walls as the bumper is grown into the walls. The final step is removing either the bumpers from the walls or removing the walls from the bumpers leaving either a generally bowl shaped element or a round shaped element respectively on the substrate. In addition the walls may be implanted with a dopant to further control the shape of the bumper. When the generally bowl shaped element is made from silicon, it can be utilized as an optical mirror.

Abstract: A method of manufacturing a semiconductor device having a bipolar transistor for ordinary logic operation, as well as a high voltage MOS transistor which are provided in a single semiconductor substrate. The process includes the steps of making high voltage MOS transistors which comprises the steps of n-well fabrication, first drift region fabrication, second drift region fabrication, source and drain contact region fabrication and making bipolar transistors within the same silicon substrate as the high voltage MOS transistors which includes the step of base region fabrication where the steps for fabricating the second drift region of the high voltage MOS transistor and the base region of the bipolar transistor are combined so that both regions are created simultaneously.

Abstract: A method of fabricating a micromechanical structure of a rod enclosed by a casing and able to both slide and rotate in the casing is described. The rod is formed on a substrate by growing a cylinder into a wall. The wall is then removed leaving the cylinder. The cylinder is coated with a sacrificial layer and a structural layer. The structural layer is patterend to form the casing and the sacrificial layer is removed.