{'fraction_non_alphanumeric': 0.021592442645074223, 'fraction_numerical': 0.008097165991902834, 'mean_word_length': 4.936, '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}}
Optical design of a kind of catadioptric system

According to the requirements of practical application, the optical parameters were calculated. In order to reduce the difficulty in engineering, the design adopted the scheme of catadioptric structure, of which all the surfaces were designed as spherical surface type. In addition, a correcting component was designed, as well as a focusing component, for the purpose of improving the image quality and focusing. The optical design software CODEV was used to optimize the scheme and simulate the result. It was shown that the design result obtained an excellent image quality within the visible wavelength range of 0.45μm- 0.75μm. At last, the design result was tested by tolerance analysis.