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3642472 |
BLEACHING OF HOLOGRAMS
A method for increasing the brightness and quality of a pictorial hologram made from photographic emulsions is disclosed. A critical range of average transmittance of the developed emulsion for an...
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3639031 |
HOLOGRAM COPYING FOR RECONSTRUCTION OF AN ABERRATION-FREE WAVEFRONT AT A WAVELENGTH DIFFERING FROM THE COPYING WAVELENGTH
A first thick hologram of the wave front from an object is formed at a first wavelength to which a first hologram-recording medium is sensitive. A second hologram is recorded on a second recording...
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3635540 |
HOLOGRAPHY WITH SURFACE WAVES
A process for the production of holograms wherein only one information carrying spatial frequency is used for recording by simultaneous exposure of a light-sensitive recording material to an...
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3633988 |
HELMET-MOUNTED HOLOGRAPHIC AIMING SIGHT
A head-coupled sighting reticle having a hologram incorporated in a helmet aceplate illuminated by a point source of light. The hologram is constructed by creating a spherical-plane...
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3630598 |
OPTICAL DEMODULATION FILTER
Optically screened input information is recorded as excursions on the surface of the thermoplastic film. The excursions consist of a periodic carrier wave and a modulating signal containing the...
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3630593 |
HOLOGRAPHICALLY PRODUCED IMAGE ARRAYS FOR PHOTOLITHOGRAPHY
This disclosure describes the generation of multiple identical images holographically. Wavefronts from a unit pattern and a pinhole array separately illuminated by branched, spatially filtered and...
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3622220 |
HOLOGRAPHIC OPTICAL POLARIZERS AND BEAM SPLITTERS
Holographic optical components such as polarizers and beam splitters are made by the interference of a pair of coherent light beams polarized at 90° to their plane of incidence on a transparent...
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3619025 |
ELIMINATION OF THE EFFECTS OF SCRATCHES AND TWISTING IN A HOLOGRAPHIC MOTION PICTURE TAPE
Longitudinal streak in playback of pressed phase hologram motion pictures on plastic tape, due to diffraction by longitudinal scratches on the plastic tape, which is normally superimposed on...
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3619024 |
PACKING OF HOLOTAPE
A hologram in the form of a flexible tape, either metal or plastic, has a central region of a first thickness and having a hologram relief pattern thereon and edge regions of a greater thickness so...
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3619023 |
OPTICAL ELEMENT FOR GENERATING CONTOUR STRIPES
An optical element for generating in space a fringe pattern consisting of light maxima and minima. This optical element consists of a hologram on which light from two adjacent light sources...
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3617274 |
HARDENED GELATIN HOLOGRAPHIC RECORDING MEDIUM
A holographic recording medium comprising a hardened gelatin film sensitized with a chromate or dichromate. Exposure effects a change in the index of refraction in the exposed areas of the film,...
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3610732 |
NONLINEAR IMAGE CONTRAST AMPLIFIER SYSTEM
Stimulated thermal light-scattering techniques such as the amplification of a weak beam interfering with a strong beam in absorbing media produce amplification of the contrast of weak optical...
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3601017 |
METHOD OF SUPPRESSING INTERFERENCE FRINGES IN PHOTOSENSITIVE MATERIAL
There is disclosed a method of suppressing unwanted interference fringes which are produced at interfaces of photosensitive information carriers, for example, holograms or interferograms, by...
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3598466 |
HOLOGRAPHIC CORRECTION PROCESS FOR OPTICAL SYSTEM ABERRATIONS
A hologram is produced by a corrective optical system operative in the visible radiation band, and the hologram is incorporated in an infrared optical image-reproducing system to correct...
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3580657 |
BLAZED SURFACE HOLOGRAM
A blazed hologram is produced by exposing a photohardenable material to a stationary standing wave pattern preferably followed by preferential dissolution of the relatively exposed (or relatively...
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3544711 |
THREE-DIMENSIONAL DISPLAY SYSTEM EMPLOYING OPTICAL WAVEFRONT RECONSTRUCTION
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3532406 |
WAVEFRONT RECONSTRUCTION WITH INCOHERENT LIGHT
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3522979 |
COMBINATION OF HOLOGRAMS HAVING AN IMPROVED DIFFRACTED IMAGE AND A METHOD FOR MAKING THE SAME
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3442566 |
COLOR HOLOGRAPHY
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3567444 |
Title is not available
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3667946 |
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3594167 |
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3552853 |
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3712813 |
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3574616 |
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3672744 |
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3664721 |
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3664722 |
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3695879 |
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3703407 |
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3707371 |
Title is not available
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3674332 |
Title is not available
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