Patent ID: 8995234
Filing Date: 2015-03-31
Classification: G02B,G04B

Abstract:
1. A date indication display device for a timepiece, wherein the display device includes a support element having a plurality of display areas on which are arranged the indications of the days of the month, wherein the support element moves behind an aperture arranged in a dial of the timepiece to reveal one of the date indications arranged on the support element, wherein: a) the indications of the days of the month are divided into a first and a second group, the date indications of the first group having a first colour, and the date indications of the second group having a second colour, different from that of the date indications of the first group; b) the number of display areas of the support element is equal to the number of date indications in a group, wherein a date indication of the first group is superposed on a date indication of the second group on each display area; c) a first optical filter whose transmittance is chosen to transmit the first colour and to block the second colour, and a second optical filter whose transmittance is chosen to transmit the second colour and to block the first colour, wherein the first and second optical filters are alternately positioned behind the aperture.