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a lens for correcting defective vision of one eye, held in position by the facial muscles



(1) An eyeglass lens, with or without a frame, that is held in the eye socket.

(2) The simplest kind of camera lens, consisting of a single positive meniscus-type lens. It is used predominantly in inexpensive cameras for portrait and landscape photographs. The best image quality is provided by a convex-concave meniscus lens with its convex side facing the photosensitive layer and with a diaphragm located in front of the objective. Monocles have a small aperture ratio (not exceeding 1:8) and a small image angle (not exceeding 25°). A monocle is also called a landscape lens.

References in periodicals archive ?
examination of Proust's descriptions and dispositions of monocles,
descriptions of monocles, especially the tenor of his figurative
The first reference to monocles occurs in Swann's Way.
Swann the bibeloteur becomes a "collector" of monocles in the
n'etait pas jusqu'aux monocles que beaucoup portaient (et qui,
nothing, down to the monocles which many of them wore (and which
The monocles have previously masked the individuality of his five
masculine identity, including the monocles worn (see Garber 73 and Crane
identity is both marked and constituted by monocles.
Proust portrays monocles being moved, adjusted, or in some
interprets the transgressive act of wearing monocles by women such as
12) The stability of monocles contributes a comic motif throughout