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| Number | Title | Issue Date |
| 3957354 | Diffractive subtractive color filtering technique A subtractive color filtering technique, suitable for the projection of color pictures, employs diffraction, rather than color dyes, for discriminatingly subtracting unwanted spectral wavelength portions of polychromatic illuminating light. The useful out... | 05/18/1976 |
| 3957348 | Method for altering elliptically polarized light The optical transitions of extrinsically optically active soluble and insoluble materials become circularly dichroic when in contact with twisted nematic liquid crystalline materials. The circularly dichroic optical properties induced in the normally extr... | 05/18/1976 |
| 3957346 | Method for altering elliptically polarized light The optical transitions of twisted nematic liquid crystalline compositions exhibit circular dichroism. The circular dichroism in twisted nematic liquid crystalline compositions is utilized to alter the relative amounts of left and right hand circularly po... | 05/18/1976 |
| 3957344 | Information transfer system The optical transitions of extrinsically optically active soluble and insoluble materials become circularly dichroic when in contact with the twisted nematic structure of nematic liquid crystalline materials. The circularly dichroic optical properties ind... | 05/18/1976 |
| 3953129 | Testing and inspecting lens by holographic means Processes for the accurate, rapid and inexpensive testing and inspecting of oncave and convex lens surfaces through holographic means requiring no beamsplitters, mirrors or overpower optics, and wherein a hologram formed in accordance with one aspect of th... | 04/27/1976 |
| 3951519 | Liquid crystal imaging system An imaging system wherein an imaging member comprises a layer of a homeotropically aligned nematic liquid crystalline material which is optically uniaxial residing on a photoconductive insulating layer. When the liquid crystal layer is subjected to an ele... | 04/20/1976 |
| 3948660 | Method for the manufacture of fresnel lenses using light-sensitive materials In a method of forming a Fresnel lens from a body of light-sensitive material of the type which undergoes changes in its optical path-length when exposed to light, the step of exposing each portion of such body of light-sensitive material to light to the ... | 04/06/1976 |
| 3947183 | Liquid crystal display system A system which transforms a liquid crystal composition having a mixture of cholesteric liquid crystal or other optically active materials and nematic liquid crystal materials from an electrically induced dynamic scattering state into an aligned nematic st... | 03/30/1976 |
| 3947085 | Method of producing a hologram with an orthoscopic image A method of producing a hologram with an orthoscopic, at least partially real image of an object is disclosed. According to the method, the object is recorded on a first hologram and is then reconstructed from this hologram and recorded on a second hologr... | 03/30/1976 |
| 3945825 | Method for producing width-modulated surface relief patterns Pulse width modulated surface relief phase holograms are produced on a substrate by developing a holographic interference pattern recorded on a photoresist deposited on the surface of said substrate as an amplitude modulated sinusoidal surface relief patt... | 03/23/1976 |
| 3944332 | Optical sensitization and development of liquid crystalline devices Increased sensitization of liquid crystalline devices utilizing current flow to provide a change in optical characteristics is provided by sandwiching a photoconductive layer between an insulating layer and a liquid crystalline layer wherein all three lay... | 03/16/1976 |
| 3944420 | Generation of permanent phase holograms and relief patterns in durable media by chemical etching A surface relief pattern, e.g. a surface relief hologram, is substantially linearly transferred to a hard durable substrate, capable of being used as a medium for permanent storage of the pattern or as a master for replicating the hologram, from a photore... | 03/16/1976 |
| 3942872 | Liquid crystalline display The optical transitions of extrinsically optically active insoluble materials become optically active and circularly dichroic when in contact with optically negative liquid crystalline materials thereby providing unusual and highly advantageous properties... | 03/09/1976 |
| 3942861 | Full view hologram A single flat sheet hologram is provided which when illuminated displays substantially a 360° view of an object space. This is done by recording both left and right hand views of the object space on the single sheet of sensitive material. A flat sheet ho... | 03/09/1976 |
| 3942870 | Liquid crystalline optical filter The optical transitions of extrinsically optically active insoluble materials become optically active and circularly dichroic when in contact with optically negative liquid crystalline materials thereby providing unusual and highly advantageous properties... | 03/09/1976 |
| 3942871 | Liquid crystalline optical filter The optical transitions of extrinsically optically active insoluble materials become optically active and circularly dichroic when in contact with optically negative liquid crystalline materials thereby providing unusual and highly advantageous properties... | 03/09/1976 |
| 3938889 | Method and apparatus for measuring linear thermal expansion of polymeric material A method and apparatus for measuring the linear thermal expansion of a polymeric material wherein a sample with a wedge surface is mounted on a graphite block within a temperature controlled chamber. The incident and reflected beam of a laser lie in a pla... | 02/17/1976 |
| 3938895 | Method for positioning an optical fiber A method is described for positioning an optical fiber. The method takes two general forms: (1) The optical fiber is positioned carefully with respect to some predetermined external surface on a stationary holder such that the optical fiber may be later p... | 02/17/1976 |
| 3937564 | Method for trimming of a specimen for a microtome A method for trimming of a specimen which is to be sectioned in a microtome to locate that part of the specimen which is of interest, comprising the superimposing in a microscope of the image of a cut section on the image of the specimen surface.... | 02/10/1976 |
| 3937565 | Process of coding indicia and product produced thereby A printed sheet of material has indicia thereon in scrambled or coded form produced by operation of an auto-stereoscopic camera using a lenticular screen. The indicia which appear inchoate to ordinary vision, can be decoded or unscrambled by viewing the s... | 02/10/1976 |
| 3936138 | Method of reconstructing holograms using a reflected undiffracted beam as a reconstruction beam A plurality of holograms carrying equivalent information are arranged so that the undiffracted beam passing through the first hologram is used as a reconstructing beam to illuminate the second hologram, and the undiffracted beam of the second is used as a... | 02/03/1976 |
| 3931373 | Replication processes for producing plastic optical components Polymeric replica molds formed from certain specific polymeric compositions are disclosed. The polymeric compositions impart properties to the replica molds which allow the casting of high-quality plastic optical components such as ophthalmic lenses. Amon... | 01/06/1976 |
| 3930716 | Method of collecting orientation of the molecules of a liquid crystal and a liquid-crystal cell for carrying out said method A method of collective orientation of the molecules of a mesomorphous liquid crystal, in which each of two oppositely-facing walls of a liquid-crystal cell is covered with a conductive deposit forming an electrode and with a thin film of a substance which... | 01/06/1976 |
| 3930824 | Method of forming laser components Glass compatible metal matrices are mounted in a glass forming boat and slugs of glass are applied to each. Heat is provided such that openings in the matrix are glassed, whereupon the entire sheet may be ground, polished, or otherwise processed as desire... | 01/06/1976 |
