A part of general optical elements we design and produce is shown here.
Convex lenses are shown here as a representative sample of singlet lenses.
There are various kinds of as halving lenses. Halving lenses consist of 2 (two) lenses which would be made independently first, and would be adhered together. The picture indicates one of those.
Meniscus lenses are one of singlet lenses or adhered lenses, with a concave surface and the other convex surface. Meniscus lenses with a positive number of forcal length are often used for cameras.
A definition of prism is transparent bodies with 2 (two) or more polished surfaces which are at least not parallel and consist a certain angle. Functionally, there are reflective prisms, dispersion prisms, polarizing prisms and so on. Shapely, there are many kinds of prisms, as triangle prisms, penta prisms, dove prisms, roof prisms and so on.
Achromatic lenses consist of 2 (two) or more lenses, and usually consist of a crown glass and a flint glass. With respect to 2 (two) selected wave lengths, a chromatic aberration is compensated.
Cylindrical lenses are shaped like a part of cylinder at 1 (one) or more surfaces. Cylindrical lenses can produce line shape aberrations, so that they are widely used to compensate line shape aberrations of eyes, distance meters, and recently of semiconductor lasers.
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