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  This patent is a reissue of patent US4488042

Title: USRE32735: Line scan reader/writer by holographic collection
[ Derwent Title ]


Country: US United States of America

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11 pages

 
Inventor: Clay, Burton R.; Wayland, MA
Thrailkill, William O.; Boston, MA

Assignee: Holographix Inc., Burlington, MA
other patents from HOLOGRAPHIX INC. (255770) (approx. 4)
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Published / Filed: 1988-08-23 / 1986-07-15

Application Number: US1986000886518

IPC Code: Advanced: G02B 5/32; H04N 1/024; H04N 1/04; H04N 1/113;
Core: more...
IPC-7: H01J 5/16;

U.S. Class: Current: 250/235; 250/566; 359/019;
Original: 250/235; 250/566; 350/003.72;

Field of Search: 350/3.7,3.71,3.72,3.73 250/234,235,236,578,550,566,568 356/445,446 358/293,294 365/125

Priority Number:
1982-04-15  US1982000368494

Abstract: An electro-optical scanner which can write and read with common optics by using a phase hologram near the focal plane of the scanned surface.

Attorney, Agent or Firm: Lahive & Cockfield ;

Primary / Asst. Examiners: Nelms, David C.;

INPADOC Legal Status: Show legal status actions          Buy Now: Family Legal Status Report

       
Related Applications:
Application Number Filed Patent Pub. Date  Title
     1984-12-11   


       
Family: Show 7 known family members

First Claim:
Show all 36 claims
Having described the invention, what is claimed as new and novel and for which it is desired to secure Letters Patent is:     1. Apparatus comprising:
  • A. a light source for providing a light beam;
  • B. an optical light beam splitter;
  • C. a first focusing lens for receiving said light beam through said beam splitter;
  • D. collection means placed between said first lens and a surface which includes information to be read in proximity with said surface, said collection means having an unmodulated portion through which said light beam is focused onto said surface and having a modulated portion through which diverging light from said surface is collected and directed to said beam splitter by means of said first focusing lens;
  • E. detector means; and
  • F. a second focusing lens for focusing said light received by said beam splitter from said surface for receipt by said detector means.


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Description: Show description

Forward References: Show 1 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (1)   |   Backward references (6)   |   Citation Link

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PDF
Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 10pp US4199219  1980-04 Suzuki et al.  Canon Kabushiki Kaisha Device for scanning an object with a light beam
Buy PDF- 15pp US4253723  1981-03 Kojima et al.  Sony Corporation Apparatus for optically reading information from a record carrier
Buy PDF- 12pp US4312559  1982-01 Kojima et al.  Sony Corporation Method of producing an inline hologram lens
Buy PDF- 12pp US4333006  1982-06 Gorin et al.  NCR Corporation Multifocal holographic scanning system
Buy PDF- 6pp US4429220  1984-01 Noguchi  Fuji Photo Film Co., Ltd. Light beam scanning device with curved grid pattern
Buy PDF- 11pp US4458979  1984-07 Ross  Erwin Sick GmbH Optik-Elektronik Light collecting arrangement in combination with a light scanning arrangement for inspecting a web of material
       
Foreign References: None

Other Abstract Info: DERABS G83-828058

Other References:
  • IBM Technical Disclosure, "Formation of Optical Elements by Holography", G. T. Sincerbox, Aug. 1967, pp. 267-268.


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