Optical element and manufacture method thereof
View Patent ↗An optical element and image capture lens structure. The optical element includes a substrate and an optical component with at least one effective area and non-effective area, formed on the substrate, wherein the non-effective area has a rough surface. The image capture lens structure includes a substrate, an optical component formed on the substrate, and a spacer with a micro structure, attached to the substrate by an adhesive, wherein the micro structure is located between the adhesive and the optical component to prevent the overflow of the adhesive.
1. An optical element, comprising
a substrate; and
an optical component with at least one effective area and non-effective area, formed on the substrate, wherein the optical component is a lens, the non-effective area has a rough surface, and the non-effective area has a surface roughness Ra of about 100-10000 nm.
2. The optical element as claimed in claim 1 , wherein the non-effective area has a surface roughness Ra of about 500-5000 nm.
3. The optical element as claimed in claim 1 , wherein the effective area has a smooth surface.
4. The optical element as claimed in claim 1 , wherein the effective area has a surface roughness Ra of about 1-20 nm.
5. The optical element as claimed in claim 1 , wherein the effective area has a surface roughness Ra of about 5-15 nm.
6. An image capture lens structure, comprising
a substrate;
an optical component formed on the substrate; and
a spacer with a micro structure, attached to the substrate by an adhesive, wherein the micro structure is located between the adhesive and the optical component to prevent the overflow of the adhesive, and the micro structure surrounds the adhesive.
7. The image capture lens structure as claimed in claim 6 , wherein the micro structure substantially contents the substrate.
8. The image capture lens structure as claimed in claim 6 , wherein the micro structure is linear, circular, square, triangular, or polygonal.
9. The image capture lens structure as claimed in claim 6 , wherein the optical component comprises at least one effective area and non-effective area.
10. The image capture lens structure as claimed in claim 9 , wherein the micro structure is located between the non-effective area and the adhesive.
11. A method for manufacturing an optical element, comprising
providing a substrate;
providing a replication tool with at least one smooth surface portion and at least one rough surface portion, that defines the shape of the optical element;
pressing the replication tool against the substrate with a replication material;
confining the replication material to a predetermined area of the substrate, wherein the predetermined area exceeds a desired area of the optical element on the substrate; and
hardening the replication material to form the optical element including at least one effective area and non-effective area, wherein the non-effective area as a rough surface.
12. The method as claimed in claim 11 , wherein the rough surface portion has a surface roughness Ra of about 100-10000 nm.
13. The method as claimed in claim 11 , wherein the rough surface portion has a surface roughness Ra of about 500-5000 nm.
14. The method as claimed in claim 11 , wherein the rough surface portion controls atm flow direction of the replication material.
15. The method as claimed in claim 11 , wherein the smooth surface portion has a surface roughness Ra of about 1-20 nm.
16. The method as claimed in claim 11 , wherein the smooth surface portion has a surface roughness Ra of about 5-15 nm.
17. The method as claimed in claim 11 , wherein the optical element is a lens.
18. The optical element as claimed in claim 1 , wherein the at least one non-effective area comprises a plurality of non-effective areas, the at least one effective area being disposed between the plurality of non-effective areas.
19. The optical element as claimed in claim 18 , wherein the at least one effective area has a smooth surface and a curved contour.
20. The optical element as claimed in claim 1 , wherein the at least one non-effective area is disposed on only one surface of the substrate.