US 11,874,632 B2
Optical device allowing to create optical aesthetic and technical effects
Pierpasquale Tortora, Neuchatel (CH); Cédric Blatter, Commugny (CH); Nicolas Debaud, Blonay (CH); and Bernat Monferrer, St-Prex (CH)
Assigned to Blancpain SA, Le Brassus (CH)
Filed by Blancpain SA, Le Brassus (CH)
Filed on Oct. 7, 2020, as Appl. No. 17/065,012.
Claims priority of application No. 19219492 (EP), filed on Dec. 23, 2019.
Prior Publication US 2021/0191332 A1, Jun. 24, 2021
Int. Cl. G04B 19/26 (2006.01); G02B 3/00 (2006.01); G02B 26/02 (2006.01); G04B 13/02 (2006.01)
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
OG exemplary drawing
 
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.