Patent ID: 11874632
Assignee: BLANCPAIN SA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
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.