(101) Symmetric-Convex Glass Lenses are manufactured with both of the lenses sides as convex mirrors. Positive focal lengths exist for both real and virtual images on these lenses.
(34) Plano-concave glass lenses are made with one concave surface and one plane surface, thus creating negative focal lengths. Also, the concave lenses form virtual images, expand light, diverge collimated light and increase focal lengths.
(30) Meniscus glass lenses have one concave surface and one convex surface. These lenses, with the use of other lenses, can produce both longer and shorter focal lengths. The shape of the lenses neither causes coma in the system nor introduce additional spherical aberrations.
(24) Meniscus glass lenses have one concave surface and one convex surface. These lenses, with the use of other lenses, can produce both longer and shorter focal lengths. The shape of the lenses neither causes coma in the system nor introduce additional spherical aberrations.
(9) Precision grade glass lenses are used for applications which require an increased peformance and are manufactured with a tighter surface quality and focal length tolerances.
(5) Precision grade glass lenses are used for applications which require an increased peformance and are manufactured with a tighter surface quality and focal length tolerances.
(2) Precision grade glass lenses are used for applications which require an increased peformance and are manufactured with a tighter surface quality and focal length tolerances.
