Abstract: An apparatus for obtaining energy from a polychromatic energy source that emits radiation in a first and a second wavelength band comprises a reflector or an energy receiver having an aperture therein; and a holographic lens that diffracts and focuses the radiation within the first wavelength band from the energy source through said aperture towards a first energy receiver, and transmits the radiation within the second wavelength band from the energy source to the reflector or energy receiver. If a reflector is used, the reflector reflects the radiation transmitted by the holographic lens towards a second energy receiver.

Abstract: An apparatus for obtaining energy from a polychromatic energy source that emits radiation in a first and a second wavelength band comprises a reflector or an energy receiver having an aperture therein; and a holographic lens that diffracts and focuses the radiation within the first wavelength band from the energy source through said aperture towards a first energy receiver, and transmits the radiation within the second wavelength band from the energy source to the reflector or energy receiver. If a reflector is used, the reflector reflects the radiation transmitted by the holographic lens towards a second energy receiver.

Abstract: A holographic replicator configured to mass-manufacture volumetric transmission holograms and including an imaging tank having a holographic master plate opposing a pneumatic absorber. When a segment of a recording film, moveable with respect to the master plate, is placed between the master plate and the pneumatic absorber, the pneumatic absorber is repositioned in space to locks the segment of the recording film between the master plate and the pneumatic absorber.

Abstract: The invention resides in a compound valve having utility in a sample injector for a liquid chromatograph. The valve has a pair of rotary spool valves (52, 54), each valve has a shaft (60) with an axial bore (64) in one end and a radial bore (66) communicating with the axial bore. A valve seal (70) surrounds the shaft. A pair of radial passageways (77, 78) in the seal are aligned diametrically and lie in a common plane with the radial bore (66) in the valve shaft. A pinion (62) is fixed to each shaft and a common driving gear (68) engages each pinion to rotate both shafts simultaneously through 180.degree. to place the radial bores in the shafts in communication selectively with either radial passageway in the valve seals.

Abstract: Novel end fitting assemblies of particular advantage for use on liquid chromatographic columns, and novel chromatographic columns comprising these novel end fittings. The end-fittings are characterized by (a) very low dead space; (b) economical and convenient replacement of wearing parts; with minimal disturbing of the packed column, or other functional end-fitting components such as cones, filters, etc. A particular advantage is the design whereby the connector portions of the fitting assembly are not normally wetted by process fluids during operation of the column. Thus, the connector portions of the assemblies can be selected from a wide variety of mechanically-desirable materials selected for their wearing characteristics. Moreover, the fittings can be tightened for high-pressure operation without damage to the structure of the column of which they are used.