CPC G04B 19/268 (2013.01) [G02B 3/00 (2013.01); G02B 26/02 (2013.01); G04B 13/02 (2013.01); G02B 2003/0093 (2013.01)] | 32 Claims |
1. An optical device comprising a transparent support provided with an upper face and a lower face which extends at a distance from the upper face, said transparent support forming a lens of plano-concave shape delimited on a first side by a planar surface, and delimited on a second side, opposite the first side, by a concave surface, the optical device also comprising a shutter which is disposed under the concave surface of the transparent support, at a distance therefrom, the shutter being configured to be displaced from an initial position to a final position by a horological movement, the optical device finally comprising a substrate disposed below the shutter, the optical device being arranged to form, through the plano-concave lens, the image of an edge of the shutter with the image of an object disposed above the planar surface of said plano-concave lens.
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