Our biconvex lenses are most suited to applications where the object and virtual images are on different sides of the lens. Ideally, the conjugate ratios (ratio of the image and object distances) will ...

VIENNA, Austria — Pseudophakic dysphotopsia is correlated with a small number of AcrySof (Alcon, Fort Worth, Texas) lenses, although only a few patients have asked for explantations as a result ...

The ten microscopes attributed to Leeuwenhoek are diminutive, comprising a biconvex lens sandwiched between two riveted body plates. A positioning screw holds a stage block and a pin to secure the ...

A statement issued by the university here said that Mr. Manohar’s invention, “A Multi lens System which is a microscope and a component of a telescope”, was approved recently.