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US 11,299,813 B2Granted
Method for manufacturing hologram pattern and specimen including metal plating layer having hologram pattern on surface thereof
OwnerSeong-Tae Noinventor
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Abstract
According to a method for manufacturing a hologram pattern of the present invention, the hologram pattern is applied to a metal plating layer (not a metal specimen). Accordingly, materials which can be plated are widely applicable. The hologram pattern, which becomes appeared in various colors depending on light and user's vision, can be formed with a simple process.
Claims6
A method for manufacturing a hologram pattern, the method comprising:
- immersing a plating specimen in a plating tank containing a plating solution and applying a voltage to the plating specimen to form a plating layer on the surface of the plating specimen;
- creating a pattern on the plating specimen including a hologram pattern on the surface of the plating layer,
- wherein the hologram pattern is created by irradiating a laser on the surface of the plating layer to remove a portion of the plating layer,
- wherein the laser is a pulse laser and has a pulse length of 5 ns to 30 ns,
- wherein the pulse laser has a frequency of 500 kHz to 1,000 kHz, and
- wherein irradiating the surface of the plating layer to create the hologram pattern comprises forming an unevenness in the surface of the plating layer that is repeated in parallel and an interval of the unevenness is 0.05 μm to 1 μm.
3 more elements
Dependencies are inferred from the claim text.