| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser marker which can easily make an image of a lenticular part clear.SOLUTION: The invention provides a laser marker 1 which irradiates a sheet of paper having a lenticular part P1 that can change a visible pattern in response to an inclination with laser light to form an image on the lenticular part P1. The laser marker 1 comprises a laser irradiation device 1B which irradiates the lenticular part P1 on a card C1 with the laser light, and an ND filter F which is placed between the lenticular part P1 and the laser irradiation device 1B and transmits the laser light. Adopting of this kind of composition is very effective in forming on the lenticular part P1 an image in which discriminability changes in respect to how contrast appears like a photograph of a face. |
