With the advancement in sensors, hyperspectral imaging in short wave infrared (SWIR 0.9 μm to 1.7 μm) now has wide applications, including night vision, haze-penetrating imaging, etc.
(electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics)Ĭhromatic correction for a VIS-SWIR zoom lens using optical glasses The all-silicone lens has potential uses in cellphone cameras, notebook cameras, micro monitor lenses, etc. Finally, the imaging performance of the all-silicone lens is demonstrated. The testing values are compared with the calculated ones, and they tally with each other well. The testing is carried out in succession. A calculation method is developed to obtain the focal length and the zoom ratio. While the motor is operating, the rope can shrink or release to change the focal length of the lens. A nylon rope linking a motor is tied, encircling the notch in the metal ringer. A tunable metal ringer is fettered around the side edge of the lens. International Nuclear Information System (INIS)Īn all-silicone zoom lens is fabricated. (YDS)Īn all-silicone zoom lens in an optical imaging system Includes teaching notes and classroom management strategies. Introduces a case study on a motion picture company considering the purchase of a newly developed zoom lens in which students act as the engineers designing the zoom lens based on the criteria of company's specifications. The Zoom Lens: A Case Study in Geometrical Optics. The change of focal length is achieved only by varying curvatures of targeted integrated electro- optically actuated lenses. This enables an enhanced synthesis of the system behavior and leads to a simplified zoom-lens design with no moving elements. The application of aberration polynomials enables a better comprehension of the primary monochromatic aberrations at the lens elements during a change in magnification. In this paper, the systematic development of an electro- optically actuated zoom-lens will be discussed.
However the number of efficient optical designs for electro- optically actuated zoom-lenses is limited. The precommercial development of zoom-lenses demands simplified and cost-effective system designs. Zoom-lenses benefit from active optical components in two ways: first, no moveable structures are required and second, fast response characteristics can be realized. An example are liquidlenses which vary their curvatures to change the refractive power. In contrast, active optical components change their optical properties by varying their physical structure by means of applying external electric signals. However, well established optical design approaches can be applied. These systems are limited in speed and often require complex coupled movements. Mechanical actuation changes the focal length of a zoom-lens system by varying the axial positions of optical elements. Two working principles can be identified: mechanical actuation and application of active optical components. Progressive miniaturization and mass market orientation denote a challenge to the design of dynamic optical systems such as zoom-lenses. Electro- optically actuated liquid- lens zoom
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