{'fraction_non_alphanumeric': 0.018361581920903956, 'fraction_numerical': 0.0, 'mean_word_length': 4.717741935483871, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Liquid Crystal Lens with Spherical Electrode

The variable focusing function of a liquid crystal lens (LCL) with a spherical electrode is demonstrated. One electrode is a transparent film of indium tin oxide (ITO) coated on the spherical surface of a plano-convex glass lens that is placed on a planar liquid crystal cell. The lower substrate of the cell is also coated with an ITO film acting as another electrode. A nonuniform electric field nearly symmetrical about the central line produces a gradient distribution of refractive index. The cell therefore behaves like an optical lens. The LCL exhibits good optical properties, and can be of any size, and its diopter is a function of the applied voltage.