| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magic trick tool for showing more mysterious and amazing magic trick by allowing a person different from a person who has selected a card to guess the card. <P>SOLUTION: On each of the back faces 21b-25b of cards 21-25, a reflection area 31 and a dummy area 32 are formed, respectively. The reflection area 30 has a retroreflective function which reflects incident light L in a direction opposite to the incident direction of the light L. The dummy area 32 is the same in appearance as the reflection area 31, but has no retroreflective function. A performer requests a person to select a card, to prevent the reflection area 31 of the other cards 21-24 from being exposed to the light L. A person who guesses the card sees the cards 21-25 while exposing the back faces 21b-25b of the cards 21-25 to the light L from a light source device 40. Only the reflection area 31 of the selected card 25 emits light, so that only the person who has selected the card is notified secretly that the card 25 is the selected card. <P>COPYRIGHT: (C)2013,JPO&INPIT |
