1. J. Borel, J. C. Deutsch, G. Labrunie, and J. Robert, “Liquid crystal diffraction grating,” U.S. Patent No. 3,843,231 (Oct. 22, 1974).
2. Large-angle beam deflector using liquid crystals
3. A. F. Fray and D. Jones, “Liquid crystal light deflector,” U.S. Patent No. 4,066,334 (Jan. 3, 1978).
4. Blazed phase liquid crystal beam steering
5. Optical phased array technology