Castellated optical mounting structure

• US 8,259,401 B2
• Filed: 11/19/2004
• Issued: 09/04/2012
• Est. Priority Date: 11/19/2004
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Eastman Kodak Company
• Inventors: Schmieder, James A., Ludington, Paul D.
• Primary Examiner(s): HASAN, MOHAMMED A
• Application Number:
  US10/993,056
• Publication Number:
  US 20060109668A1
• Time in Patent Office: 2,846 Days
• Field of Search: 359/811, 359/819, 359/818, 359/808, 359823-830
• US Class Current: 359/819
• CPC Class Codes: G02B 7/022 lens and mount having complementary engagement means, e.g. screw/thread
• CPC Class Codes: G02B 7/025 using glue

Abstract

An optical assembly has a lens element having a plurality of radially extending tabs and a mounting structure having a plurality of retaining members. The retaining members extend in a direction substantially parallel to an optical axis defined by the mounting structure and are positioned complementary to the radially extending tabs of the lens element. A portion of the mounting structure is in an interference fit with the a portion of the lens element.

Claims

1. An optical assembly comprising:

a lens element having a plurality of radially extending tabs; and

a mounting structure having a plurality of retaining members, the retaining members extending in a direction substantially parallel to an optical axis defined by the mounting structure and positioned complementary to the radially extending tabs of the lens element, wherein a portion of the mounting structure is in at least one non-bonding opposing-force pressure interference fit with a portion of the lens element so that the respective portions forcibly press against each other to use pressure to hold the lens element in place relative to the mounting structure.

2. The assembly of claim 1, each of the retaining members having an inner curved surface and the lens element having an outer curved surface, wherein the interference fit includes the inner curved surface of at least one of the retaining members being radially in opposing-force pressure interference curved contact with the outer curved surface of the lens element, and each of the retaining members having a side flat surface and each of the radially extending tabs having a side flat surface, wherein the interference fit includes the side flat surface of at least one of the retaining members being in opposing force interference non-curved contact with the side flat surface of at least one of the radially extending tabs.

3. The assembly of claim 2, each of the retaining members having a second side flat surface and each of the radially extending tabs having a second side flat surface, wherein the interference fit includes the second side flat surface of at least one of the retaining members being in opposing force interference non-curved contact with the second flat side surface of at least one of the radially extending tabs.

4. The assembly of claim 1, wherein each of the retaining members are made from a material having an elastic property.

5. The assembly of claim 1, wherein the lens element is made from a plastic material.

6. The assembly of claim 1, wherein the lens element is made from a glass material.

7. The assembly of claim 1, wherein at least one retaining member comprises at least one finger longitudinally extending in a direction substantially parallel to the optical axis defined by the mounting structure.

8. The assembly of claim 1, wherein at least one retaining member comprises at least one elongated portion extending in a direction substantially parallel to the optical axis defined by the mounting structure.

9. The assembly of claim 1, wherein at least one retaining members comprises at least one finger longitudinally extending in a direction substantially parallel to the optical axis defined by the mounting structure and at least one elongated portion extending in a direction substantially parallel to the optical axis defined by the mounting structure.

10. The assembly of claim 1, the mounting structure having a body, wherein a gap exists between the plurality of extending tabs and the body of the mounting structure.

11. The assembly of claim 1, wherein the lens element comprises axi-symmetric lens power.

12. The assembly of claim 1, wherein the lens element comprises anamorphic lens power.

13. The assembly of claim 1, wherein the lens element comprises an aspherical lens surface.

14. The assembly of claim 1, wherein the lens element comprises a spherical lens surface.

15. The assembly of claim 1, wherein the lens element comprises a plano lens surface.

16. A method of manufacturing an optical system comprising:

providing a lens element having a plurality of radially extending tabs;

providing a mounting structure having a plurality of retaining members, the retaining members extending in a direction substantially parallel to an optical axis defined by the mounting structure and positioned complementary to the radially extending tabs of the lens element; and

fixing the lens element to the mounting structure at least temporarily by providing at least one non-bonding opposing-force pressure interference fit between a portion of the mounting structure and a portion of the lens element so that the respective portions forcibly press against each other to use pressure to hold the lens element in place relative to the mounting structure.

17. The method of claim 16, further comprising:

causing the at least temporary fixing of the lens element to the mounting structure to become more permanent.

18. The method of claim 17, wherein causing the at least temporary fixing of the lens element to the mounting structure to become more permanent comprises applying an adhesive to the lens element and the mounting structure.

19. The method of claim 18, further comprising:

applying the adhesive to at least one of the radially extending tabs of the lens element and at least one of the retaining members of the mounting structure.

20. The method of claim 17, wherein causing the at least temporary fixing of the lens element and the mounting structure to become more permanent comprises welding the lens element and the mounting structure together.

21. The method of claim 20, wherein the welding process is a laser welding process.

22. The method of claim 20, wherein the welding process is a sonic welding process.

23. The method of claim 17, wherein causing the at least temporary fixing of the lens element to the mounting structure to become more permanent comprises using a heat induced sealing process.

24. The method of claim 23, wherein the heat induced sealing process comprises applying heat to a portion of the mounting structure and deforming the portion of the mounting structure.

25. The method of claim 16, each of the retaining members having an inner curved surface and the lens element having an outer curved surface, wherein providing the interference fit between the portion of the mounting structure and the portion of the lens element includes providing opposing-force pressure interference curved contact radially between the inner curved surface of at least one of the retaining members and the outer curved surface of the lens element, and each of the retaining members having a side flat surface and each of the radially extending tabs having a side flat surface, wherein providing the interference fit between the portion of the mounting structure and the portion of the lens element includes providing opposing force interference non-curved contact between the side flat surface of at least one of the retaining members and the side flat surface of at least one of the radially extending tabs.

26. The method of claim 25, each of the retaining members having a second side flat surface and each of the radially extending tabs having a second side flat surface, wherein providing the interference fit between the portion of the mounting structure and the portion of the lens element includes providing opposing force interference non-curved contact between the second side flat surface of at least one of the retaining members and the second side flat surface of at least one of the radially extending tabs.

27. The method of claim 16, the mounting structure having a barrel portion, the barrel portion having an axis, the lens element having an axis, wherein providing the interference fit between the portion of the mounting structure and the portion of the lens element aligns the axis of the lens element with the axis of the barrel portion of the mounting structure.

28. An optical assembly comprising:

a lens element having a plurality of radially extending tabs;

a mounting structure having a plurality of retaining members, the retaining members extending in a direction substantially parallel to an optical axis defined by the mounting structure and positioned complementary to the radially extending tabs of the lens element; and

means for fixing the lens element to the mounting structure at least temporarily by creating at least one non-bonding opposing-force pressure interference fit between respective portions of the lens element and the mounting structure so that the respective portions forcibly press against each other to use pressure to hold the lens element in place relative to the mounting structure.

29. The assembly of claim 28, wherein the means for fixing the lens element to the mounting structure comprises an opposing force interference contact between a portion of the lens element and a portion of the mounting structure.

30. The assembly of claim 29, each of the retaining members having an inner curved surface and the lens element having an outer curved surface, wherein the opposing-force pressure interference contact is curved between the inner curved surface of at least one of the retaining members and the outer curved surface of the lens element, and each of the retaining members having a side flat surface and each of the radially extending tabs having a side flat surface, wherein the opposing force interference contact is flat between the side flat surface of at least one of the retaining members and the side flat surface of at least one of the radially extending tabs.

31. The assembly of claim 30, each of the retaining members having a second side flat surface and each of the radially extending tabs having a second side flat surface, wherein the opposing force interference contact is flat between the second side surface of at least one of the retaining members and the second side surface of at least one of the radially extending tabs.

32. The assembly of claim 28, wherein the assembly further comprises means for fixing the lens element to the mounting structure permanently, and wherein the means for fixing the lens element to the mounting structure permanently comprises an adhesive bond of the lens element and the mounting structure.

33. The assembly of claim 32, wherein the adhesive bond is to at least one of the radially extending tabs of the lens element and at least one of the retaining members of the mounting structure.

34. The assembly of claim 28, wherein the assembly further comprises means for fixing the lens element to the mounting structure permanently, and wherein the means for fixing the lens element to the mounting structure permanently comprises a weld of the lens element and the mounting structure.

35. The assembly of claim 28, wherein the assembly further comprises means for fixing the lens element to the mounting structure permanently, and wherein the means for fixing the lens element to the mounting structure permanently comprises a heat induced seal of the lens element and the mounting structure.