An optical module (10) comprises a positive meniscus lens (16) having a focal length F1 and comprising a first convex optical surface (12) and a second concave optical surface (20), and a plano-convex lens (22) having a focal length F1 and comprising a third flat optical surface (24)...
identical indicates that some fragments, albeit minute, were lost when the crystal was cleaved. A triangular depression appears at the center of the left-hand margin of the photograph; this is the point where the laser beam was focused by the lens. The traces on the surface show that the ...
A posterior chamber lens (10) including a plano-convex polyethylmethacrylate (PMMA) optic (12) and two smooth, monofilament, curved, flexible loops (14, 16) attached to and extending from the optic (12). Each of the loops (14, 16), also of PMMA, is angulated 10...
It is noticed that these six samples have identical chemical composition of inorganic cage (i.e., the Pb-I layer), the difference in the effective charge-carrier mobility and broadband emission should originate from the packing of the organic cations, which may cause distortion of the inorganic ...
lens (Edmund Optics, Adjustable ReflX Objective 36X/0.5NA IR FIN) to the sample. Transmitted light from the sample was collected and collimated by a 3-in focal length plano-convex ZnSe lens and refocused by another identical lens on a liquid nitrogen-cooled mercury–cadmium–telluride ...
An optical module () comprises a positive meniscus lens () having a focal length Fand comprising a first convex optical surface () and a second concave optical surface (), and a plano-convex lens () having a focal length Fand comprising a third flat optical surface () and a fourth ...
US6115349 1999年6月10日 2000年9月5日 Fujitsu Limited Two laser source optical pickup with a plano-convex lens to compensate for aberration caused by discs of different thicknessesUS6115349 * Jun 10, 1999 Sep 5, 2000 Fujitsu Limited Two laser source optical pickup with a plano-convex lens ...
The objective lens has a convex surface (28) and a concave surface (29), the convex surface facing towards the radiation source. The combination of the change in vergency and the concave surface provides a large field of the objective lens, both when scanning the first and second record ...
Knowing the limit of the number of lines that can be exposed while maintaining a minimum level of axial resolution is important to maximize imaging speed; the exposure time is inversely proportional to the number of identical lines. As a guide, illuminating multiple lines with a duty cycle ...