Podrobná bibliografia
| Názov: |
DIFFRACTION GRATING STRUCTURE AND METHOD FOR MANUFACTURING SAME |
| Document Number: |
20090116110 |
| Dátum vydania: |
May 7, 2009 |
| Appl. No: |
12/192031 |
| Application Filed: |
August 14, 2008 |
| Abstrakt: |
A diffraction grating structure comprises a substrate having a first surface and a second surface opposite to the first surface. A first grating is defined on the first surface and a second grating is defined on the second surface. The first grating includes a plurality of first grooves and has a first grating period. The second grating includes a plurality of second grooves and has a second grating period. The first groove and the second groove are formed by a fast tool servo system. |
| Inventors: |
CHANG, JEN-TSORNG (Tu-Cheng, TW) |
| Assignees: |
HON HAI PRECISION INDUSTRY CO., LTD. (Tu-Cheng,Taipei Hsien, TW) |
| Claim: |
1. A diffraction grating structure comprising: a substrate having a first surface and a second surface opposite to the first surface, wherein a first grating is defined on the first surface and a second grating is defined on the second surface, the first grating includes a plurality of first grooves and has a first grating period, and the second grating includes a plurality of second grooves and has a second grating period. |
| Claim: |
2. The diffraction grating structure as claimed in claim 1, wherein the first grating period is equal to the second grating period. |
| Claim: |
3. The diffraction grating structure as claimed in claim 2, wherein the first grooves are misaligned with the second grooves. |
| Claim: |
4. The diffraction grating structure as claimed in claim 2, wherein the first grooves are aligned with the second grooves. |
| Claim: |
5. The diffraction grating structure as claimed in claim 1, wherein the first grating period is less than the second grating period. |
| Claim: |
6. A method for manufacturing a diffraction grating, the method comprising: providing a substrate having a first surface and a second surface opposite to the first surface; providing a first predetermined function associated with arrangement of the grooves of the first grating and a second predetermined function associated with arrangement of the grooves of the second grating; transforming the first function into a first Fourier series and the second function into a second Fourier series; forming the first grating on the first surface of the substrate using a fast tool sever system according to the first Fourier series; forming the second grating on the second surface using the fast tool sever system according to the second Fourier series. |
| Claim: |
7. The method as claimed in claim 6, wherein a Ni alloy film is formed on the first surface and the second surface of the substrate. |
| Claim: |
8. The method as claimed in claim 6, wherein the fast tool sever system is driven by a piezoelectric ceramic driver to form the first grating and the second grating. |
| Current U.S. Class: |
359/569 |
| Current International Class: |
02; 02; 23 |
| Prístupové číslo: |
edspap.20090116110 |
| Databáza: |
USPTO Patent Applications |