An all-silicone zoom lens is fabricated. A tunable metal ringer is fettered around the side edge of the lens. A nylon rope linking a motor is tied, encircling the notch in the metal ringer. While the motor is operatin...An all-silicone zoom lens is fabricated. A tunable metal ringer is fettered around the side edge of the lens. A nylon rope linking a motor is tied, encircling the notch in the metal ringer. While the motor is operating, the rope can shrink or release to change the focal length of the lens. A calculation method is developed to obtain the focal length and the zoom ratio. The testing is carried out in succession. The testing values are compared with the calculated ones, and they tally with each other well. Finally, the imaging performance of the all-silicone lens is demonstrated. The all-silicone lens has potential uses in cellphone cameras, notebook cameras, micro monitor lenses, etc.展开更多
A precise zoom magnification is important for semiconductor industry and biomedical research. A novel measurement method is demonstrated for optical zoom magnification measurement in this paper. The magnification is o...A precise zoom magnification is important for semiconductor industry and biomedical research. A novel measurement method is demonstrated for optical zoom magnification measurement in this paper. The magnification is obtained by pattern correction between barcode image formed by optical zoom and reference image generated by an ideal optical model. Measurement accuracy which is better than 0.06% has been achieved for optical zoom magnification. Compared with traditional concept, the measurement results are only dependent on two line edges. The barcode correlation method can achieve higher accuracy and better robustness by using the information over the whole field of view.展开更多
介绍了一种三组元联动机械补偿式小型化中波红外连续变焦光学系统。针对阵列规模640×512,像元尺寸15μm的中波制冷型红外探测器,设计了焦距20~275 mm, F数5.5的连续变焦光学系统,系统长度90.6 mm。具有变倍比大、结构紧凑、元件数...介绍了一种三组元联动机械补偿式小型化中波红外连续变焦光学系统。针对阵列规模640×512,像元尺寸15μm的中波制冷型红外探测器,设计了焦距20~275 mm, F数5.5的连续变焦光学系统,系统长度90.6 mm。具有变倍比大、结构紧凑、元件数量少的特点,适合应用于小型化的机载光电吊舱系统以及轻量手持红外望远系统中。展开更多
基金supported by the Foundation of Science & Technology Department of Henan Province, China (Grant No. 102102210477)the Foundation of Science & Technology Bureau of Luoyang City, China (Grant No. 1101040A)
文摘An all-silicone zoom lens is fabricated. A tunable metal ringer is fettered around the side edge of the lens. A nylon rope linking a motor is tied, encircling the notch in the metal ringer. While the motor is operating, the rope can shrink or release to change the focal length of the lens. A calculation method is developed to obtain the focal length and the zoom ratio. The testing is carried out in succession. The testing values are compared with the calculated ones, and they tally with each other well. Finally, the imaging performance of the all-silicone lens is demonstrated. The all-silicone lens has potential uses in cellphone cameras, notebook cameras, micro monitor lenses, etc.
文摘A precise zoom magnification is important for semiconductor industry and biomedical research. A novel measurement method is demonstrated for optical zoom magnification measurement in this paper. The magnification is obtained by pattern correction between barcode image formed by optical zoom and reference image generated by an ideal optical model. Measurement accuracy which is better than 0.06% has been achieved for optical zoom magnification. Compared with traditional concept, the measurement results are only dependent on two line edges. The barcode correlation method can achieve higher accuracy and better robustness by using the information over the whole field of view.
文摘介绍了一种三组元联动机械补偿式小型化中波红外连续变焦光学系统。针对阵列规模640×512,像元尺寸15μm的中波制冷型红外探测器,设计了焦距20~275 mm, F数5.5的连续变焦光学系统,系统长度90.6 mm。具有变倍比大、结构紧凑、元件数量少的特点,适合应用于小型化的机载光电吊舱系统以及轻量手持红外望远系统中。