Using singlepolepiece configurations both as the condenser lens (CS = 13.2 mm, CC = 11.5 mm) and objective lens (CS = 1.05 mm and CC = 0.83 eV at a working distance of 8 mm and focal length 5 mm, when the retarding field is taken into account), they reached the calculated spot...
These two lenses based on waveguide effective ENZ material exhibit merits of low loss and precise phase control. Another 2-D lens formed by the waveguide effective ENZ channel is designed in Ref. [114]. An anomalous matching of nearby sources is adopted and simply patterning tailoring is ...
Materials with anisotropic material parameters can be utilized to fabricate many fascinating devices, such as hyperlenses, metasolids, and one-way waveguides. In this study, we analyze the effects of geometric anisotropy on a two-dimensional metamaterial composed of a rectangular array of elliptic ...
6. Process according to claim 5, further characterized in that the positions of the frame elements are calculated in the direction perpendicular to the cylindrical lenses with respect to an apparent period D of the lens array, which is given by the following formula: ...
For plano-convex lenses, exact analytical solutions for the back and front focal lengths have been developed using meridional ray tracing [10]. However, comprehensive solutions for plano-concave lenses—often used in systems requiring the divergence rather than convergence of rays—are limited [11]....
where fd is the focal length of the thin triplet lens and fd = 10 mm; Kd1, Kd2, and Kd3 are the refractive powers of the first, second, and third lenses of the thin triplet lens group, respectively; Vd1, Vd2, and Vd3 are the Abbe numbers of the first, second, and third lenses...
For better macro viewing, several macro or objective lenses were mounted onto a 0.6–6× zoom lens for the FACE system. Meanwhile, for the current motorized stepper system, three pieces of extension tubes with a total of 65 mm in length were mounted between the camera and Laowa macro lens ...
The formula for the refractive power of a thin lens is expressed as Kλ=1fλ=(nλ−1)(C1−C2).Kλ=1fλ=(nλ−1)(C1−C2). (2) where Kλ, fλ, and nλ are the refractive power, focal length, and refractive index of a thin lens at a certain wavelength, respectively...