CALENDAR Russian patent published in 1999 - IPC

FIELD: print production. SUBSTANCE: device has calendar substrate which front page is covered with images of ways of weeks and dates of respective months. Also calendar carries member, which alters light and is mounted for observation of images of respective months. Images of days of week and days of respective months of year are designed as color stereo image. Light alteration member is designed as light-transmitting lens-shaped screen or dispersion optical system which are mounted for separation of constituents of color stereo image into at least pair of images of days of weeks and dates which correspond to at least one week of at least one month of at least one year. Images are applied onto calendar substrate for their observation at various angles, so that image of at least one day corresponds to one angle. EFFECT: decreased size of calendar, while size of days and dates of respective month is constant, improved quality of perception of stereo image for various angles of observed image. 18 cl, 5 dwg