Nova Patents
JP5361007B2

Process of making mold for optical film

Abstract

There is provided a process of making a mold for optical films. The process of making a mold for optical films comprises:etching a stereostructure in a surface of the mold having a flat surface or an engraved convex and concave surface, by using a laser beam. The process of making a mold for optical films may be useful to easily mark spots, to control the height of protrusions and the position where the protrusions are formed, and also to form the protrusions having constant depths even in a curved surface such as a convex and concave surface.

JP5361007B2, drawing sheet 1
Sheet 1 of 13

Term

Projected expiry 3 March 2029.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Projected expiry

9 claims: 9 independent, 0 dependent

  1. 1
    Making use of the laser, in order for projection to be formed to the optical film, repeating three-dimensional structure to the surface of the die, implication the step which processes, The surface of the aforementioned die is the convex concave surface, As for aforementioned three-dimensional structure , when average diameter designating the average interval between the aforementioned three-dimensional structure which H, it adjoins D and average height as P, in order to fill up 80H1/3P200H1/3 and 0.1DHD, production manner of the die for the optical film which features that it is processed to the aforementioned convex concave concave surface.
  2. 2
    As for aforementioned three-dimensional structure , paralleling to the crosswise of the optical film, while changing the initial phase of the laser, in the claim 1 to feature that it is processed production manner of the die for the optical film of statement.
  3. 3
    In order for convex lens condition to be formed to the aforementioned optical film, other three-dimensional structure repeating to the aforementioned convex concave convex surface, in the claim 1 to feature that it is processed or 2 production manner of the die for the optical film of statement.
  4. 4
    Making use of the laser, repeating aforementioned three-dimensional structure to the surface of the die, before the step which processes byte processing or via the beads sanding from the claim 1 to feature that the step which the shade carves three-dimensional structure of convex lens condition furthermore is included either of 3 in 1 sections production manner of the die for the optical film of statement.
  5. 5
    Making use of the laser, repeating aforementioned three-dimensional structure to the surface of the die, as for the step which processes, from the claim 1 to feature that 2 times or more it is executed either of 4 in 1 sections production manner of the die for the optical film of statement.
  6. 6
    As for the aforementioned die, from the claim 1 to feature that it is flat form, caterpillar die or drum die either of 5 in 1 sections production manner of the die for the optical film of statement.
  7. 7
    As for the aforementioned die, the nickel, from the claim 1 to feature that it is the chrome or ceramic material either of 6 in 1 sections production manner of the die for the optical film of statement.
  8. 8
    As for the aforementioned die, polymer or silica coat from the claim 1 to feature that it is the polymer material which is done either of 6 in 1 sections production manner of the die for the optical film of statement.
  9. 9
    As for the aforementioned convex concave surface, in the aforementioned optical film the lenticular glass lens, in the claim 1 to feature that it possesses the form where the prism, micro glass lens array or Fresnel lens form are formed production manner of the die for the optical film of statement.
Independent claims9