MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202541011280 A) filed by Bharat Electronics Limited on February 11, 2025, for Holographic Optical Elements Based Holographic Sight For Extreme Environments.

Inventors include Abhishek Tiwari; and Rishabh.

The application for the patent was published on August 14, 2026, under issue no. 33/2026.

Abstract: ABSTRACT HOLOGRAPHIC OPTICAL ELEMENTS BASED HOLOGRAPHIC SIGHT FOR EXTREME ENVIRONMENTS The present invention provides an apparatus and method where the imprinting of either Reticle or Collimator is done with one substrate where when imprinting is complete, another substrate is strategically added to other side of the polymer, this process is called sandwiching between two glass plates. The said process resulted in averting any environmental changes to the actual imprinted HOE. Both the substrates and coatings are customized to avoid any stray reflections into the Line of Sight of the operator. The imprinting time is also reduced with the aid of master Reticle and Collimator by reducing one arm and utilizing single arm or both arm parallel to increase production. The design is not limited to two arms; multiple arms can be added simultaneously provided power of the laser is sufficient for all.

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