Projection television display utilizing Bragg diffraction cell f

Details Projection television display utilizing Bragg diffraction cell f Projection television display utilizing Bragg diffraction cell f

1992-09-01

1994-04-12

Groody, James J.

Television

Holographic

359 9, 348769, H04N 574

Patent

active

053030435

ABSTRACT:
Apparatus for horizontally scanning an image corresponding to electronic video input information utilizing a Bragg Diffraction cell in which collimated light from a laser directed through the cell is modulated by a real-time fourier transform of a line of video input information, thereby to produce a one line acoustic hologram in the cell which is reconstructed at a infinity as a stationary image corresponding to the horizontal line of video information. Using a suitable lens system, the stationary image is re-imaged at a plane positioned at a fixed distance from the Bragg Diffraction cell. The scanner is useful in image projection systems, in which the horizontal line image is vertically scanned by a galvanometer driven mirror vibrating in synchronism with the vertical blanking interval of the input video.

REFERENCES:
patent: 3818129 (1974-06-01), Yamamoto
patent: 4003080 (1977-01-01), Maiman et al.
patent: 4577932 (1986-03-01), Gelbart
patent: 4623219 (1986-11-01), Trias
patent: 4851918 (1989-07-01), Crowley
patent: 5172251 (1992-12-01), Benton et al.
E. Schildwachter, et al, "MTF Characteristics of the Scophony Scene Projector", 1991 Univ. of Central Florida.
J. R. Boyd, et al - "Design Procedure for Wide Bandwidth Acousto-Optic Modulator", Optical Engineering, vol. 16 No. 5, Sep./Oct. 1977, pp. 452-454.

Affiliated with

Also associated with

Rating

Projection television display utilizing Bragg diffraction cell f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection television display utilizing Bragg diffraction cell f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection television display utilizing Bragg diffraction cell f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2103029