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Means employing a multiple lens array for reading from a high density optical memory storage

  • US 3,899,778 A
  • Filed: 01/04/1974
  • Issued: 08/12/1975
  • Est. Priority Date: 01/04/1974
  • Status: Expired due to Term
First Claim
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1. A system for retrieving information stored page-by page on a mask comprising:

  • A. illuminaTion means, said illumination means including a plurality of discrete light emitting areas and means for selectively enabling said discrete areas for light emission;

    B. a multiple lens array comprising first and second substrates each having parallel corrugations on a face thereof, said faces brought together with the parallel corrugations of said first substrate perpendicular to the parallel corrugations of said second substrate, said corrugations forming at each intersection thereof one of a plurality of lenslets, said multiple lens array being disposed proximate said illumination means such that each of said lenslets is aligned with one of said discrete light emitting areas; and

    C. photosensitive detector means, said photosensitive detector means including a plurality of light sensitive areas, said photosensitive detector means being disposed to intercept light issued from a light emitting discrete area of said illumination means and passed through a corresponding lenslet of said multiple lens array;

    whereby an information bearing area of a mask positioned intermediate said illumination means and said multiple lens array is illuminated by a selected light emitting area, and the resultant information encoded beam passes through the corresponding one of said lenslets and impinges on said photosensitive detector means.

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