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This paper purposes a portable multispectra tunable forensic lens for jadeite analysis. The visible and ultraviolet light are used to detect the absorption spectra of natural jadeite, implement jadeite, and jadeite color spectra around 550∼700 nm. Besides, tunable lens with three-step (5, 7 and 10 X) magnification is based on the dielectric liquid lens.
This paper presents a dielectric tunable forensic lens design for jadeite analysis. The gemstone tunable forensic lens with three-step (5, 7 and 10 X) magnification is based on the research of dielectric liquid lens, which is able to capture internal and surface characteristics such as color distribution, bubble trapping and cracks by bright field and dark field illumination.
This paper presents an elliptical dielectric liquid lens for presbyopia glasses. This lens provides the tunable diopter from 0.9 D to 2.6 D by adjusting the voltage of dielectric liquid lens. The liquid lens's horizontal and vertical filed of view (FOV) are 26° and 20°. The diopter adjusting time is around 1 sec.
This paper presents the development of a portable microscope with dielectric liquid lens. This device provides the tunable working distance from 7.6 mm to 6.7 mm by adjusting the voltage of dielectric liquid lens. The liquid lens's response time is about 200 ms and electric power consumption about 0.32 mW.
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