This lens was covered by Thomas Sutton's patent of 28 September 1859 (no. 2193) "Improvements in the construction of apparatus for taking photographic pictures, consisting of and entitled 'an improved panoramic lens for taking photographic pictures.' "
The patent description described the lens in detail:

'The compound lens is composed of two single thick concavo-convex lenses made of glass, the curved surfaces of which are portions of concentric spheres. They are secured to a suitable mount in such a manner and position that the curved surfaces of both of them (that is to say, all the four curved surfaces are concentric), their common centre being a point in the axis of the compound lens, and the lenses having their concave surfaces opposite to each other. In the space or cavity between the concavo-convex lenses is contained a transparent fluid of lower refractive and dispersive power than the glass of which the lenses are made. [distilled water] The two glass lenses may be made of the same kind of glass, and equal in all respects, or they made made of different kinds of glass, having suitable radii in order to correct the compound lens for colour and for speherical abberration. To give sharp definition when objects at different distances from the lens are included in the view, a diaphragm of suitable size is placed between the lenses, within the fluid, at the centre of the compound lens...'