Abstract: An internally reflecting rotating polygon system for correcting wobble by double reflection from the active facet without bow is disclosed. Instead of the impinging light source being transverse to the axis of rotation of a rotating polygon, this rotating polygon 52 having internally reflecting facets 54 at a draft angle to the axis of rotation, a collimated light source impinges upon a rotating polygon 52 with the facets 54 having the predetermined draft angle D. A., and angles of incidence at the first and second reflections. By two further reflections, 56, 58, the light is then reimpinged upon the same facet 54; wobble is similarly corrected, but with no effects of bow.

Abstract: Integrated laser diode devices are disclosed in which small light signals or small current signals applied thereto produce large changes in the output. One embodiment discloses a homostructure optical device with symmetric optically excited regions. Another embodiment discloses a single-heterostructure optical device with a single optically excited region. Another embodiment discloses a double-heterostructure optical device with dual optically excited regions. A further embodiment integrates an electronic device with a diode laser in accordance with the principles of the present invention. Still another embodiment discloses an optical triode laser device in which a small input light results in an amplified light output signal.

Abstract: This invention relates to a bearing assembly and more particularly to a bearing assembly which has parts slidable with respect to each other and with roller members therebetween so the assembly functions free from unwanted contaminating elements such as lubricants, chips, flakes, or the like, thereby rendering the assembly readily adaptable for use in environments such as electroplating applications which must be maintained clean of such unwanted elements.