lateral cross section of a plano convex cylindrical lens the boxed portion is given a 3 dimensional perspective with some magnification and depicted in the the above equation is also known as an equation for a hyperbola with a greater than one the lens is plano convex with the convex curvature as hyperbolic mount plano convex lens drawing plano convex lens placed in chiral medium the above equation is also known as an equation for a hyperbola with a greater than one the lens is plano convex with the convex curvature as hyperbolic lensmake rse s a plano convex lens is described by its diameter and focal length for example a 6 x9 lens will have a diameter of 6 and a 9 focal length an extended hemispherical lens is a special type of plano convex lens in which the lens s curved surface is a full hemisphere and the lens is much thicker diverging convex mirror ray diagram upright virtual shrunk image example 1 an image formed by a convex lens figure 3 improved focusing with achromatic doublet plano convex lenses physics made simple schematic of the experimental setup f1 aspherical lens f 8 mm Ø1 plano convex lenses to enlarge ray tracing a spherical mirror schematic configuration of 3d integration of a microoptical plano convex lens with a microchamber and the three easy to find rays are shown in dark blue the extreme rays in the spray that hit the lens at its edges are shown in light blue ray diagrams for lenses raw data pplato flap phys 6 3 optical elements prisms lenses and spherical mirrors the focal length of a plano convex lens varies with its radius of curvature r and the refractive index n of the material as shown in the first equation intricate plasma tered images and spectra of focused femtosecond laser pulses scientific reports this pattern can be reversed a bundle of diverging rays going to the lens from a focal point are bent by the lens so they all come out parallel example 3 an image of a virtual object formed by a concave lens the lens thickness t to maintain the focus at the vertex is f 2 this lens can be used to collimate light from a small source placed in a hole at the figure 3 a shows the effects of spherical aberration in a single element condenser b shows how moving the lens toward the source can be a useful for instance a plano convex lens which is used to focus a collimated beam produces a sharper focal spot when used with the convex side towards the beam snapshots a screen is placed 90 cm from an obejct the image of the object on the screen is formed by a convex lens at two diffe locations separated by 30 cm by using two plano convex lenses in a pair collimation is increased because s a is decreased if we had not decreased s a it would have caused a lot of oe 51 3 033002 f004 png graph shows characteristics of ebpadma using a plano convex lens of 30 mm focal length a shows diffe velocities as a function of laser power at 800 the thin lens equation magnification