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Objective: This study aimed to explore the relationship between 24-h activity behavior and Chinese adolescents’ Internet addiction. Methods: A survey of 2045 adolescents (56.5% boys) was conducted, and adolescents’ 24-h movement behavior and Internet addiction were measured via a questionnaire. Descriptive statistics were used to analyze the basic situation of the respondents; chi-square analysis was used to compare gender differences, and logistic regression was used to analyze the relationship between 24-h exercise guide entries and Internet addiction. Results: From the number of 24-h movement behavior guides, 25.3% of the children did not meet the recommended amount of any kind of activity behavior guide, while 50.4% and 21.7% of the children reached the recommended amount of one and two activity behavior guidelines, respectively; only 3.2% of the children met the recommended amount of all three activity behavior guidelines. Adolescents who did not meet the recommended 24-h activity behavior guidelines were more likely to have Internet addiction (OR = 8.46, 95 CI = 3.06–23.36), and were more likely to have one item (OR = 4.50, 95 CI = 1.64–12.39) or two items (OR = 3.12, 95 CI = 1.11–8.74). Conclusions: Physical activity, static behavior, and sleep may all have a greater impact on adolescents’ Internet addiction, among which physical activity has a greater impact on adolescents’ Internet addiction. Different combinations of 24-h movement behavior have different effects on adolescents’ Internet addiction.

Usually, a polynomial expansion of the deviation from a conic equation was used for describing a rotationally symmetric aspheric surface, which is also the data basis for the technology formulating of subsequent fabricating and testing. The degree of the surface asphericity is mathematically determined. But the parameters of the expansion provide little information about the aspheric shape measurement, even small differences of which can result in dramatic differences of the difficulty of fabricating and testing. For the process of aspheric surface designing, fabricating and testing in an optical system are separately. The testing method originates from the aspheric surface geometry, but the shape testing result can’t be fed back to the optical design. Based on the principle of detection-oriented, a new type of aspheric surface is proposed and characterized by the optical path parameters of its partial null testing. When a new aspheric surface was optimized in the design of an optical system, the measurement optical path of the surface was achieved at the meanwhile. A three-band fusion imaging system is designed with two mirrors of the partial null aspheric surface type. The results show that the imaging quality can meet the resolution of detectors in each band. The PV values of emergent wavefronts of the partial null detection optical paths for each mirror are about 7λ and 12λ, respectively, and the distributions of which are uniform and detectable.