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Title: US4923262: Scanner system having rotating deflector hologram
[ Derwent Title ]

Country: US United States of America

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9 pages

 
Inventor: Clay, Burton R.; Wayland, Morocco

Assignee: HoloGraphix, Inc., Burlington, MA
other patents from HOLOGRAPHIX INC. (255770) (approx. 4)
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Published / Filed: 1990-05-08 / 1988-06-23

Application Number: US1988000212158
IPC Code: Advanced: G02B 26/10;
Core: more...
IPC-7: G02B 5/32; G02B 26/10;

U.S. Class: Current: 359/018; 359/900;
Original: 350/003.71; 350/320;

Field of Search: 350/3.71,320

Priority Number:
1985-11-06  US1985000795310

Abstract: A scanner system which uses rotating, high efficiency holograms to deflect a light beam thereby achieving a linear scan. The hologram is unique in that it allows high system efficiency without requiring the input polarization to be aligned to the fringe pattern.

Attorney, Agent or Firm: Lahive & Cockfield ;

Primary / Asst. Examiners: Arnold, Bruce Y.; Callaghan, Terry S.
Maintenance Status: E1 Expired  Check current status

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Related Applications:
Application Number Filed Patent Pub. Date  Title
US1985000795310 1985-11-06       


       
Parent Case:     This application is a continuation of application Ser. No. 795,310, filed Nov. 6, 1985.

Designated Country: BE DE FR GB IT LU NL 

Family: Show 4 known family members
First Claim:
Show all 21 claims		 Having described the invention, what is claimed as new and novel and for which it is desired to secure Letters Patent is:     1. A scanning system comprising:
  • A. an optical spinner having a surface rotatable about an axis that is substantially perpendicular to said surface at its point of interaction with said axis; said spinner divided into a plurality of segments;
  • B. a plurality of optical elements each capable of processing light by diffraction in a predetermined manner, each of said elements included respectively in a portion of said segments;
  • C. wherein said portions of said segments are recorded and arranged for receiving a light beam at a non-normal angle in the portion of said segments which include said elements, and efficiently redirecting randomly polarized light received at said non-normal angle;
  • D. means defining a scanning plane; and
  • E. correction means, included in said elements, for enabling substantially straight line scan locus on said scanning plane as said spinner rotates.
    •


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Forward References: Show 20 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (20)   |   Backward references (9)   |   Citation Link

Buy
PDF		 Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 8pp US3619033  1971-11 McMahon  Sperry Rand Corporation THREE-DIMENSIONAL LIGHT BEAM SCANNER UTILIZING TANDEMLY ARRANGED DIFFRACTION GRATINGS
Buy PDF- 7pp US4094576  1978-07 Heiling  International Business Machines Corporation Straight-line optical scanner using rotating holograms
Buy PDF- 24pp US4235504  1980-11 Ikeda et al.  Fujitsu Limited Holographic disk scanner
Buy PDF- 17pp US4289371  1981-09 Kramer  Xerox Corporation Optical scanner using plane linear diffraction gratings on a rotating spinner
Buy PDF- 8pp US4348080  1982-09 Funato  Ricoh Company, Ltd. Optical scanning apparatus and method
Buy PDF- 14pp US4378142  1983-03 Ono  Nippon Electric Co., Ltd Hologram made by using a plurality of spherical waves and a device for laser beam scanning by using the hologram
Buy PDF- 13pp US4470659  1984-09 Funato  Ricoh Company, Ltd. Light beam scanning apparatus
Buy PDF- 9pp US4548463  1985-10 Cato et al.  International Business Machines Corporation Holographic scanner control based on monitored diffraction efficiency
Buy PDF- 8pp US4583816  1986-04 Kramer  Holotek Ltd. Preobjective hologon scanner system
       
Foreign References:
Buy
PDF		 Publication Date IPC Code Assignee   Title
Get PDF - 27pp EP0122783 1984-10  G02B 26/10 FUJITSU LIMITED Method and apparatus for light beam scanning using a hologram 
  JP58174919 1983-10       
  JP59111620 1984-10       


Other Abstract Info: DERABS G87-144820

Other References:
  • Ono, Yuzo et al, "Holographic Disk Scanners for How Free Scanning" Applied Optics vol. 22, No. 14, 7/15/83.
  • Grating Efficiency Theory as it Applies to Blazed and Holographic Gratings E. G. Loewen, M. Neviere and D. Maystre, Oct. 1977 vol. 16, No. 10, Applied Optics pp. 2711-2721. (11 pages) Cited by 14 patents
  • Holographic Laser Scanners Using Generalized Zone Plates, Yuzo Ono & Nobuo Nishida Applied Optics, vol. 21, No. 24, Dec. 1982 pp. 4542-4548. (7 pages) Cited by 2 patents


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