Forming methods, forming devices for articles having a...

Details Forming methods, forming devices for articles having a... Forming methods, forming devices for articles having a...

2007-05-01

2007-05-01

Mack, Ricky (Department: 2873)

Optical: systems and elements

Diffraction

From grating

C359S743000, C369S112080

Reexamination Certificate

active

10884539

ABSTRACT:
A article having a micro-sized shape being formed on the surface of the article by pressing a die onto the surface, wherein the elastic modulus of the article at room temperature is in the range of 1–4 GPa, the thickness of the article after forming is equal to 0.1 mm or more and 20 mm or less and the aspect ratio of the micro-sized shape is equal to 1 or more. A forming method to produce an article comprising the steps of setting the temperature of a die having a micro sized shape to be equal or higher than the glass transitional temperature of material having an elastic modulus of 1 to 4 (GPa) pressing the die to the material to transfer the micro sized shape to the material, and cooling the die having the micro sized shape.

REFERENCES:
patent: 5442481 (1995-08-01), Hasushita
patent: 2003/0210468 (2003-11-01), Kato
patent: 2005/0237900 (2005-10-01), Sano et al.
patent: 2002-220241 (2002-08-01), None
Kikuta et al., “Current Topics in Diffractive Optics”,Electro Information and Communication Society; Paper J83-C, vol. No. 3, Mar. 2002.

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