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| Number | Title | Issue Date |
| 4607914 | Optical system design techniques using holographic optical element The merit function of an optical system employing a holographic optical element (HOE) is optimized by determining the ideal phase transfer functions of the hologram over a set of field angles and then arriving at the phase transfer function of the hologra... | 08/26/1986 |
| 4603938 | Method of producing inline hologram lens In this invention, an optical lens element (L1) receiving a wave beam from a common laser source radiating a spherical wave beam and a full reflection mirror (MR) having a small window (W) are employed. This spherical wave beam is irradiated through the s... | 08/05/1986 |
| 4550973 | Achromatic holographic optical system An achromatic imaging system employs a diffractive hologram as the primary element. A conventional achromatic optical element, comprising either a refractive lens or mirror, is positioned between the primary element and a second holographic optical elemen... | 11/05/1985 |
| 4540247 | Hologram scanner A hologram scanner includes a rotatable hologram disk on which a plurality of hologram lenses are arranged circumferentially, and a light beam guide mechanism for successively shifting irradiation regions in a predetermined direction with respect to the d... | 09/10/1985 |
| 4536833 | Lighting fixture utilizing a multi-layered hologram as a lens element A lighting fixture utilizing a spatially fixed light source and a multi-layered hologram as a lens element. The hologram receives light from the source and directs it to a task area. The layers of the lens element are responsive to light of one or more wa... | 08/20/1985 |
| 4505544 | Spatial frequency multiplexed coherent optical processor for calculating generalized moments An optical processor that can compute the moments of a two-dimensional image in parallel. The image is placed at the plane of a holographic mask which is disposed in the front focal plane of a Fourier-transforming lens and each of the desired moments is f... | 03/19/1985 |
| 4497534 | Holographic optical head A holographic optical head for imaging a laser diode for optical storage or magnetic tracking applications includes three holograms, a beam director and a quarter-wave plate. In a preferred embodiment the beam director is a fourth hologram. The holographi... | 02/05/1985 |
| 4488042 | Line scan reader/writer by holographic collection An electro-optical scanner which can write and read with common optics by using a phase hologram near the focal plane of the scanned surface.... | 12/11/1984 |
| 4461533 | Forming and reading holograms A method of forming and reading a hologram, useful for instance as a lens, is disclosed which eliminates chromatic aberrations usually present when a hologram is recorded using light of a higher frequency than that for which the hologram is to be used on ... | 07/24/1984 |
| 4458980 | Optical reproducing head An optical reproducing head for reproducing an information signal recorded on an optical record medium includes a semiconductor laser for generating a laser beam, a first off-axis hologram lens irradiated with the laser beam from the semiconductor laser t... | 07/10/1984 |
| 4421379 | Multiple holographic lens A two step process allows a multiple holographic lens to be recorded with a single exposure. A multiple exposure, non-overlapping holographic fly's eye lens is first prepared with the correct F number spacing. A single collimated beam striking the fly's e... | 12/20/1983 |
| 4402306 | Thermal energy storage methods and processes A thermal energy collecting and storing device including a thermally insulated storage vessel including a heat retaining material holding chamber, a solar portal in the top of the vessel, the solar portal including a tubular member having upper and lower ... | 09/06/1983 |
| 4393126 | Method for manufacturing in-line hologram lens A method of producing an inline hologram lens is disclosed which includes the steps of producing a diffracted wave beam by a diffraction device, producing a spherical wave beam by an optical device, providing the diffracted wave beam perpendicularly incid... | 07/12/1983 |
| 4367366 | Solar cell arrangement A solar cell arrangement with an associated optical collecting lens system. The lens system focuses a light impingement area onto the solar cell to intensify incident radiation. The collecting lens system includes an optically active layer provided betwee... | 01/04/1983 |
| 4355858 | Hologram lens A hologram lens capable of converting an output beam of light emitted from a semiconductor to a reconstruction light suitable for reconstructing holograms is prepared by use of the object light, which resembles a beam of light emitted divergently from a s... | 10/26/1982 |
| 4339176 | Holographic space-variant system for evaluating the ambiguity integral An optical system for creating the ambiguity function of a moving target is disclosed. The two signals which are to be used in the analysis are coded on spatial data masks as two-dimensional arrays of one-dimensional functions. The frequency scaling prope... | 07/13/1982 |
| 4329019 | Three-dimensional image display apparatus and a screen therefor In the disclosed three-dimensional image display apparatus, a projecting system projects images having parallax information onto a screen. The screen is composed of a plurality of corner reflectors each composed of three intersecting reflecting surfaces, ... | 05/11/1982 |
| 4312559 | Method of producing an inline hologram lens An inline hologram lens suitable for use in an optical reproducing head is formed by first preparing a mother off-axis hologram lens by exposing a photo-sensitive layer to a subject wave beam and an off-axis reference wave beam, and then developing the ph... | 01/26/1982 |
| 4310216 | Process for manufacturing a device for coupling at least two light conductors and a coupling device according to this process A provisional holographic lens H1 is recorded by causing the interference of a parallel reference beam with a divergent beam emitted from an optical fibre 27, and then a definitive holographic lens H2 is recorded by causing the conve... | 01/12/1982 |
| 4306763 | Optical source comprising a semiconductor laser and optical means for the anamorphosis of the beam emitted by said laser An optical source comprising a semiconductor laser having an emissive junction and optical means for the anamorphosis of the beam emitted by said laser. The optical means comprise a concave holographic diffraction grating. The location of the recording so... | 12/22/1981 |
| 4304459 | Reflective holographic scanning system insensitive to spinner wobble effects A holographic scanning system includes a reflective type holographic spinner having a plurality of diffraction gratings on its surface. A reconstruction wavefront incident on a non-grating surface of the spinner is reflected into a corrective optical elem... | 12/08/1981 |
| 4260858 | Videodisc player with drive means engaging videodisc guide groove The disclosure is directed to a system for storing and reproducing analog or digital information, such as television information. There is provided a recording disk having a mechanical guiding track formed in a spiral or circular pattern on a surface ther... | 04/07/1981 |
| 4253723 | Apparatus for optically reading information from a record carrier Apparatus for reading optically detectable indicia on a record carrier, such as video information which is recorded in the form of pits on a record medium, for example, a video disc. A source of coherent light transmits a beam to the record carrier. A hol... | 03/03/1981 |
| 4245882 | Doubly modulated on-axis thick hologram optical element An on-axis thick phase holographic optical element for use as a lens is fabricated by incorporating two off-axis holograms of two point sources located on opposite sides of the plate made by use of reference beams having a common angle with respect to the... | 01/20/1981 |
| 4218111 | Holographic head-up displays There is disclosed an integrated optical design of head-up displays suitable for use in aircraft cockpits and the like. The display system is comprised of a holographic optical element used as the combiner for presenting a direct view of the exterior on w... | 08/19/1980 |
| 4204881 | Solar power system A system for generating electrical power from sunlight, comprising a focussing diffraction grating or other focussing, spectrally dispersive means and a photocell array. The diffraction grating focuses sunlight into a spectrally dispersed band. The photoc... | 05/27/1980 |
| 4185919 | Quadrant detection system A quadrant detection system having an objective lens and a holographic lens positioned at the back focal plane of the objective lens. Four photoelectric detectors are positioned on the side of the holographic lens remote from the objective lens. The holog... | 01/29/1980 |
| 4181435 | Holographic field lens detector A holographic field lens detector system having an objective lens for focusing incoming light from a distant illuminating source upon a holographic lens positioned at the back focal plane of the objective lens. The aperture of the objective lens is simult... | 01/01/1980 |
| 4178066 | Ray-path equalizer for signal-transmission system using multimode light guides Signals, especially short pulses, are transmitted by way of a series of aligned light guides with internally reflecting boundaries (i.e. fibers or foils), with interposition of two identical transparent elements each refracting incident rays from the prox... | 12/11/1979 |
| 4140362 | Forming focusing diffraction gratings for integrated optics An apparatus is disclosed for making unchirped holographic diffraction gratings that are formed from curved lines in a thin film. The gratings so made focus as well as reflect light that is confined to the film incorporating the grating. SU BACKGROUND OF ... | 02/20/1979 |
| 4133600 | Method of manufacturing and utilizing holographic lens means Holographic lenses are formed on a substantially transparent scanning disc wherein a line focus is the object for each hologram. Such hologram is then used to reconstruct the line focus at the location of the record to be scanned, thereby alleviating tole... | 01/09/1979 |
| 4094577 | High-resolution, wide-field holographic lens The present invention relates to holographic lenses. The wide field holographic lens in accordance with the invention is obtained by the superimposition of interference networks recorded within the volume of a thick material. These networks constitute a corres... | 06/13/1978 |
| 4072395 | Microscope A microscope is disclosed as incorporating a light source which broadcasts light in succession through a holographic condenser lens, a transparent object support stage, an object to be magnified, a holographic objective lens, a holographic zoom lens assem... | 02/07/1978 |
| 4054356 | Method of making hologram lenses A hologram which is made by use of a collimated light beam incident upon the hologram at an angle with respect to the line orthogonal thereto is used as an optical element to converge a laser beam in a process of making a hologram lens. Since the hologram... | 10/18/1977 |
| 4043653 | Holographic high resolution contact printer A holograph high resolution contact printer for use in transferring high resolution information, which is in the form of a pattern on a transparency, from the transparency to the light-sensitive photoresist material front surface of a light-recording medi... | 08/23/1977 |
| 4027327 | View finder for reflex camera A holographic lens which functions to converge light passing therethrough is located on a plane equivalent to the focal plane of a taking lens of a reflex camera. An image of the object is formed on the holographic lens and viewed in enlarged scale throug... | 05/31/1977 |
| 3940204 | Optical display systems utilizing holographic lenses This invention is applicable to display systems, such as in a helmet mounted display or a head-up display, utilizing a holographic lens operating at a relatively large off-axis angle in order to perform the dual function of a combiner glass and an eyepiec... | 02/24/1976 |
