Design and Fabrication of Computer Generated Hologram for Virtual Projection of a Reticle Pattern

  • Alpana Bhagatji
  • Amit K. Agarwal
  • G. Unnikrishnan
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


In this paper, we present the design and fabrication of an on-axis Fresnel Computer Generated Hologram (CGH) which on illuminating with the laser diode projects the virtual image of a reticle pattern. This can find application in an aiming sight where the reticle pattern is projected onto a distant target. An iterative optimization algorithm has been used to design the CGH. The CGH of about 20 mm size with 5 microns pixel size is fabricated using a maskless lithography system.


Computer generated hologram Fresnel Maskless lithography 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Alpana Bhagatji
    • 1
  • Amit K. Agarwal
    • 1
  • G. Unnikrishnan
    • 1
  1. 1.Instruments Research and Development EstablishmentDehradunIndia

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