Abstract: Blemish quality of fused fiber optics faceplates, tapers, image inverters and other arrays of multifibers is improved by protecting outer fibers of the multifibers from excessive heating and/or contamination during their fabrication. A preform of a multiplicity of optical fibers is covered with a protective layer of removable material while being fused into a building block. The protective layer is removed from each of the building blocks and the blocks are subsequently assembled into a juxtaposition and fused into a fiber optic array. Multifibers so fabricated and used as component building blocks for the arrays uniquely minimize traditional "chicken wire" blemishing.

Abstract: A short fiber optic image transmitter receives an image produced by a fiberscope objective and transmits the image to the image receiving end of the flexible fiber optic bundle of the fiberscope. The short image transmitter is oscillated about an axis normal to its direction of image transmission for causing images transmitted thereby to scan across the image receiving end of the fiberscope bundle. Synchronous scanning of the opposite image emitting end of the fiberscope bundle renders the received images stationary and of enhanced resolution.

Abstract: A simple and compact image enhancement system for industrial and medical fiberscopes including in each case adjacent each of opposite ends of the fiber bundle of a fiberscope, a plane parallel optical image transmitting plate and means for oscillating the plate about an axis normal to the fiber bundle axis. With one plate transmitting optical images to one end of the fiber bundle and the other plate transmitting the images away from the opposite end of the bundle, ultimate image enhancement and bundle blemish suppression is accomplished by synchronous oscillation of the two plates.

Abstract: Optical sections (lenses) of pseudophakoi having tangential holes are produced without drilling operations. A preform of lens material is drawn with embedded acid soluble rods and/or openings corresponding in diametral size and relative juxtaposition to the size, shape and locations of holes needed in a lens, a lens blank is cut from the drawn preform and portions of rods remaining therein are etched away prior to or following final edging and surface finishing of the lens blank.

Abstract: An electron multiplier channel structure having channel walls formed of alternate strips of different glasses. One glass has optimum electrical conductivity properties and the other glass has optimum secondary electron-emitting properties. The strips are contiguous so that electrical conducting strips can readily supply electrons to neighboring electron emitting strips when an electrical potential is applied across the multi-channel structure.

Abstract: Making perforate optical sections (lenses) of pseudophakoi with avoidance of drilling operations and adversities thereof. Lens material is drawn with embedded acid soluble columns corresponding in diametral size and relative juxtaposition to the size and spaced locations of holes needed in a lens and the columns are etched away prior to or following final edging and surface finishing of the lens. Making multiple lens preforms is contemplated.

Abstract: Optical sections (lenses) of pseudophakoi having tangential holes are produced without drilling operations. A preform of lens material is drawn with embedded acid soluble rods and/or openings corresponding in diametral size and relative juxtaposition to the size, shape and locations of holes needed in a lens, a lens blank is cut from the drawn preform and portions of rods remaining therein are etched away prior to or following final edging and surface finishing of the lens blank.

Abstract: A glass blade is produced from a preform of insoluble glass having a sharp edge encased in soluble glass. The encased preform is heated and drawn to the reduced cross-sectional size desired of the glass blade, cut transversely to length and leached for removal of the soluble glass and exposure of its sharp edge.

Abstract: Making an optical prism of an enlarged ground and polished insoluble glass preform encased with soluble glass. The glass combination is heated and drawn to the reduced cross-sectional size desired of the prism with the soluble glass protecting the prism preform against deformation by surface tension forces and other damage. The soluble glass is removed after drawing to leave the prism body with true faces and angles.

Abstract: Microchannel electron-multiplying plates formed of large numbers of glass-clad glass fibers all bundled tightly together in side-by-side relationship with each other and having their core sections removed for producing electron multiplying channels through the plates. Each channel has an electrically semi-conductive inner wall surrounded by an electrical insulating glass for preventing cross-talk of electrical energy between electron multiplying channels of the plates when the plates are in use.