HARMAN technology's new holographic emulsions; red sensitive and green sensitive assisted by smaller grain sizes,
novel sensitization and coating technology have been shown to achieve high diffraction efficiencies and narrow band
reconstruction capabilities. Authors demonstrate processing optimizations and material behavior characteristics for
Transmission image Masters as well as Holographic Optical Elements (HOE's).
HARMAN technology's new holographic emulsions; red sensitive and green sensitive assisted by smaller grain sizes,
novel sensitization and coating technology have been shown to achieve high diffraction efficiencies and narrow band
reconstruction capabilities. Authors demonstrate processing optimizations and material behavior characteristics for both
narrow band and broadband with controlled playback frequency.
A device, which keeps two camcorders permanently in synchronization, has been developed. The mentioned device uses LANC (CONTROL-L) camcorder's inputs for synchronization. It enables controlling of two camcorders simultaneously via built-in buttons, by using external LANC remote controller and/or by the PC via serial (RS232) communication. Since device requires LANC inputs on camcorders or ACC inputs on still cameras, it can be used on some camcorders produced by manufacturers Sony and Canon or some still cameras produced by Sony. The device initially synchronizes camcorders or still cameras by applying arbitrarily delayed power-up pulses on LANC (ACC)
inputs. Then, on user demand, the camcorders can be permanently synchronized (valid only for some camcorders produced by Sony). The effectiveness of the proposed device is demonstrated by several experiments on three types of camcorders (DCR-TRV900E, HDR-HC1, HVR-Z1U) and one type of still camera (DSC-V1). The electronic schemes,
PCB layouts, firmware and communication programs are freely available (under GPL licence).
Autostereoscopic displays effectively 'steer' different image-bearing bundles of light rays to the two eyes of the observer(s). Typically, each observer has to find an imaginary point or line in space upon which to place her nose, or an active system tracks a single observer, aiming the imaginary point or line toward her nose via some sort of face tracking scheme. This paper describes a system of the second type that is specifically adapted to accommodate several arbitrarily-located viewers while maintaining good optical isolation of a stereoscopic pair of images, and while registering them so that the consonance of accommodation and convergence occurs at the front surface of the display for maximum comfort during interaction.
KEYWORDS: Digital micromirror devices, LCDs, Holography, Spatial light modulators, Holograms, Projection systems, Diffusers, Digital Light Processing, Mirrors, RGB color model
We describe the use of a digital micromirror device (Texas Instruments, Inc.'s DMDTM) as a spatial light modulator for holographic applications. Questions of the interferometric effects of the moving mirror structure and the appropriateness of pulse-width modulation for grayscale imaging are addressed. Compensation for the particular attributes of DMD imaging has allowed the creation of full-color holographic stereograms of high image quality.
Holographic Stereograms offer the opportunity to bring live, animated subjects into the holographic image process. Earlier designs for image capture; linear tracking cameras and the stationary camera filming the subject rotating on a turntable, although being able to image and produce good definition Holographic Stereographic images are both lacking in one key area: in both cases the act of the imaging process totally dominates the subject content and it's related event.
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