US Patent No: 4,577,932

Number of patents in Portfolio can not be more than 2000

Multi-spot modulator using a laser diode

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Abstract

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A multi-spot light modulator using a laser diode is disclosed in which a single light pulse from the laser diode generates a multi-spot image of a data pattern, each spot corresponding to an active bit of the data pattern. The ability of a pulsed laser diode to generate a narrow light pulse is used to image an acoustic wave corresponding to the data pattern without the normal degradation in resolution caused by the motion of the acoustic wave.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CREO PRODUCTS INC.BURNABY BRITISH COLUMBIA28

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gelbart, Daniel Vancouver, CA 197 2205

Cited Art Landscape

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (1)
4,421,387 Extended thin film light modulator/scanner 9 1981
 
Other [Check patent profile for assignment information] (3)
4,280,755 Graphic symbol selection and recording apparatus 7 1979
4,240,715 Graphic symbol line position control means for high speed printing 4 1979
4,390,875 Message character image projection control system 7 1982

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SILICON LIGHT MACHINES CORPORATION (39)
6,956,878 Method and apparatus for reducing laser speckle using polarization averaging 30 2000
7,177,081 High contrast grating light valve type device 15 2001
6,764,875 Method of and apparatus for sealing an hermetic lid to a semiconductor die 27 2001
6,865,346 Fiber optic transceiver 4 2001
6,747,781 Method, apparatus, and diffuser for reducing laser speckle 65 2001
6,829,092 Blazed grating light valve 12 2001
6,707,591 Angled illumination for a single order light modulator based projection system 4 2001
6,800,238 Method for domain patterning in low coercive field ferroelectrics 1 2002
6,782,205 Method and apparatus for dynamic equalization in wavelength division multiplexing 64 2002
6,991,953 Microelectronic mechanical system and methods 10 2002
6,767,751 Integrated driver process flow 5 2002
6,728,023 Optical device arrays with optimized image resolution 23 2002
7,054,515 Diffractive light modulator-based dynamic equalizer with integrated spectral monitor 1 2002
6,822,797 Light modulator structure for producing high-contrast operation using zero-order light 6 2002
6,872,984 Method of sealing a hermetic lid to a semiconductor die at an angle 25 2002
6,829,258 Rapidly tunable external cavity laser 28 2002
6,908,201 Micro-support structures 4 2002
6,813,059 Reduced formation of asperities in contact micro-structures 72 2002
6,714,337 Method and device for modulating a light beam and having an improved gamma response 8 2002
7,057,795 Micro-structures with individually addressable ribbon pairs 2 2002
6,801,354 2-D diffraction grating for substantially eliminating polarization dependent losses 10 2002
6,956,995 Optical communication arrangement 3 2002
6,712,480 Controlled curvature of stressed micro-structures 7 2002
7,049,164 Microelectronic mechanical system and methods 53 2002
6,928,207 Apparatus for selectively blocking WDM channels 2 2002
7,057,819 High contrast tilting ribbon blazed grating 4 2002
6,987,600 Arbitrary phase profile for better equalization in dynamic gain equalizer 1 2002
6,934,070 Chirped optical MEM device 4 2002
6,927,891 Tilt-able grating plane for improved crosstalk in 1×N blaze switches 3 2002
7,068,372 MEMS interferometer-based reconfigurable optical add-and-drop multiplexor 5 2003
7,286,764 Reconfigurable modulator-based optical add-and-drop multiplexer 3 2003
6,947,613 Wavelength selective switch and equalizer 1 2003
6,922,272 Method and apparatus for leveling thermal stress variations in multi-layer MEMS devices 7 2003
7,391,973 Two-stage gain equalizer 1 2003
7,027,202 Silicon substrate as a light modulator sacrificial layer 54 2003
6,922,273 PDL mitigation structure for diffractive MEMS and gratings 2 2003
6,829,077 Diffractive light modulator with dynamically rotatable diffraction plane 3 2003
6,806,997 Patterned diffractive light modulator ribbon for PDL reduction 2 2003
7,042,611 Pre-deflected bias ribbons 0 2003
 
ASML NETHERLANDS B.V. (5)
6,999,161 Lithographic apparatus, device manufacturing method, and device manufactured thereby 3 2003
7,173,687 Lithographic apparatus, device manufacturing method, and device manufactured thereby 0 2005
7,626,181 Lithographic apparatus and device manufacturing method 1 2005
7,714,305 Lithographic apparatus and device manufacturing method 1 2006
7,394,524 Lithographic apparatus, device manufacturing method, and device manufactured thereby 0 2006
 
ORBOTECH LTD. (5)
5,140,608 Optical system for focusing a light beam on to an image plane 13 1991
6,275,514 Laser repetition rate multiplier 30 1998
7,092,000 Pulse light pattern writer 3 2000
6,765,934 Laser repetition rate multiplier 7 2001
7,453,486 Pulse light pattern writer 0 2005
 
PRESSTEK, INC. (5)
6,222,577 Multiple-beam, diode-pumped imaging system 3 1999
6,087,069 Lithographic imaging and cleaning of printing members having boron ceramic layers 8 1999
7,078,152 Lithographic printing with printing members having plasma polymer layers 2 2004
7,205,091 Lithographic printing with printing members having primer layers 3 2005
7,351,517 Lithographic printing with printing members including an oleophilic metal and plasma polymer layers 2 2006
 
KODAK GRAPHIC COMMUNICATIONS CANADA COMPANY (2)
5,517,359 Apparatus for imaging light from a laser diode onto a multi-channel linear light valve 119 1995
5,802,034 Multi-track optical read/write head 11 1996
 
TEXAS INSTRUMENTS INCORPORATED (2)
5,482,818 Method and apparatus for patterning an imaging member 56 1994
5,672,464 Method and apparatus for patterning an imaging member 14 1995
 
ASML HOLDING N.V. (1)
7,697,115 Resonant scanning mirror 0 2006
 
BARCO GRAPHICS, NV (1)
6,204,875 Method and apparatus for light modulation and exposure at high exposure levels with high resolution 29 1998
 
CARESTREAM HEALTH, INC. (1)
5,196,867 Extension of dynamic range for continuous tone laser printers 1 1991
 
CARL ZEISS SMT GMBH (1)
8,169,595 Optical apparatus and method for modifying the imaging behavior of such apparatus 0 2009
 
CASIO COMPUTER CO., LTD. (1)
4,685,147 Optical reading and displaying device 5 1984
 
CREO IL, LTD. (1)
5,497,252 Internal drum plotter with multiple focal point holographic optical element 5 1993
 
CREO SRL (1)
6,637,329 Method for improving registration of images on opposing sides of a printing medium 6 2001
 
EASTMAN KODAK COMPANY (1)
5,524,105 Helical optical tape read/write system using at least one laser array 16 1994
 
FLORIDA ATLANTIC UNIVERSITY (1)
5,303,043 Projection television display utilizing Bragg diffraction cell for producing horizontal scan 46 1992
 
KABUSHIKI KAISHA TOSHIBA (1)
4,933,867 Printing apparatus 23 1989
 
Lasertape Systems, Inc. (1)
5,120,136 Optical tape recorder having an acousto-optic device for scanning a radiant energy beam onto a media 25 1989
 
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (1)
5,682,262 Method and device for generating spatially and temporally shaped optical waveforms 35 1995
 
ROBERT BOSCH COMPANY LIMITED (1)
6,542,304 Laser beam device with apertured reflective element 24 2000
 
TENCOR INSTRUMENTS (1)
5,633,747 Variable spot-size scanning apparatus 83 1994
 
Other [Check patent profile for assignment information] (2)
5,278,816 Recording/reproducing system using wavelength/depth selective optical storage medium 24 1990
6,195,135 Thin video display with superluminescent or laser diodes 1 1997

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