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Optical microcircuit printing process

  • US 4,023,904 A
  • Filed: 01/12/1976
  • Issued: 05/17/1977
  • Est. Priority Date: 07/01/1974
  • Status: Expired due to Term
First Claim
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1. The process of exposing a photosensitive target surface to ultraviolet light, that comprises:

  • collecting light emitted from an arc source and bringing it to a focus in the plane of the first lenticule matrix of a double lenticule matrix light integrator,forming by the lenticules of the second matrix multiple, magnified and superimposed images of the illuminated lenticules of the first matrix on said target surface,establishing a secondary light source by forming an aperture for the light going through said integrator at a plane in proximity to the latter,collimating the light from said source and which forms said images by passing said light through a collimating lens,regulating the angle of collimation of said light by selectively adjusting the area of said light source, andpositioning a mask with a geometric pattern of diffraction slits immediately in front of said target surface.

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