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Use of mass transfer to remove shrinkage effects when copying optical elements
V.S. Soloviev, P. Perlo
Image Processing Systems Institute of RAS
1FIAT Research Center

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Pages: 138-139

Full text of article: Russian language.

Abstract:
This paper proposes a method for neutralizing the effects of contraction when copying DOEs. The method uses the effect of mass transfer during the exposure of the sample [2-4]. Neutralization is achieved by the fact that the initial exposure is performed through a binary raster (in this case, at UV power at λ = 365 nm 1MW/cm, exposure through the raster lasts 1 min). The raster period is related to the width of the minimum zone of the copied DOE. Then the sample is exposed with the same source without a raster. The result is a copy without ripples on the surface (Fig. 2) .

Citation:
Soloviev VS, Perlo P.Use of mass transfer to remove shrinkage effects when copying optical elements. Computer Optics 1998; 18: 138-139.

References:
  1. Soifer VA. Introduction to diffractive microoptics [In Russian]. Samara: Samara State Aerospace University Publisher; 1996.
  2. Soloviev VS, Soifer VA. Sisakyan IN, Boyko YB, Granchak VM, Dilung II. A method of production of relief-phase focusing elements [In Russian], USSR Inventor’s certificate SU 1624864.
  3. Soloviev VS, Boiko YB. Fabricating elements of computer optics in liquid photopolymerizable compositions [In Russian]. Computer Optics 1990; 8: 74-76.
  4. Boiko YB, Granchak VM, Dilung II, Soloviev VS, Sisakyan IN, Soifer VA. Relief holograms recording on liquid photopolymerizable layers. Proc SPIE 1991; 1238: 253-257.
  5. Berlin AA, Kefeli TY, Korolev GV. Polyester acrylates [In Russian]. Moscow: "Nauka" Publisher; 1967: 140 .

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