Methods for producing an optical wedge or prism assembly

• US 10,444,525 B1
• Filed: 03/20/2018
• Issued: 10/15/2019
• Est. Priority Date: 03/20/2017
• Status: Active Grant

• Current Assignee: John L. Baker
• Original Assignee: John L. Baker
• Inventors: Baker, John L.
• Primary Examiner(s): Chowdhury, Sultan
• Application Number:
  US15/927,029
• Time in Patent Office: 574 Days
• CPC Class Codes: G02B 27/1046 for use with transmissive spatial light modulators
• CPC Class Codes: G02B 27/1073 characterized by manufacturing or alignment methods
• CPC Class Codes: G02B 27/145 having sequential partially reflecting surfaces
• CPC Class Codes: G02B 27/62 Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
• CPC Class Codes: G02B 5/04 Prisms
• CPC Class Codes: G02B 7/003 Alignment of optical elements G02B7/001, G02B7/002 take precedence; for mirrors G02B7/1822

Abstract

A method for producing an optical wedge or prism assembly, including identifying a first prism wedge and a second prism wedge, wherein the first prism wedge includes at least one wedge surface and wherein the second prism wedge includes a wedge surface; indexing the first prism wedge and the second prism wedge such that wedge surfaces of the first prism wedge and the second prism wedge are adjacent to one another; applying an adhesive to adjacent wedge surfaces of the aligned prism wedges; manipulating at least one of the prism wedges relative to the other prism wedge to obtain a desired angle between the outer surfaces of the prism wedges; and allowing the adhesive to cure.

Claims

1. A method for producing an optical wedge or prism assembly, comprising:

selecting a first prism wedge and a second prism wedge, wherein said first prism wedge includes at least one wedge surface and wherein said second prism wedge includes a wedge surface;

indexing said identified first prism wedge and said identified second prism wedge such that said wedge surface of said first prism wedge is aligned adjacent said wedge surface of said second prism wedge;

applying an adhesive to at least one of said adjacent wedge surfaces of said first prism wedge and said second prism wedge;

rotating said first prism wedge relative to said second prism wedge to obtain a desired angle between an outer surface of said first prism wedge and an outer surface of said second prism wedge; and

allowing said adhesive to cure between at least a portion of said wedge surface of said first prism wedge and at least a portion of said wedge surface of said second prism wedge.

2. The method of claim 1, wherein an angle formed by said first wedge surface and an angle formed by said second wedge surface are supplementary angles.

3. The method of claim 1, further comprising determining whether said prism assembly is at said desired angle and, if it is determined that said resultant prism is not at said desired angle:

separating said first prism wedge from said second prism wedge;

cleaning said wedge surface of said first prism wedge and said wedge surface of said second prism wedge;

indexing said first prism wedge and said second prism wedge such that said wedge surface of said first prism wedge is aligned adjacent said wedge surface of said second prism wedge;

applying an adhesive to at least one of said adjacent wedge surfaces of said first prism wedge and said second prism wedge;

manipulating said first prism wedge relative to said second prism wedge to obtain a desired angle; and

allowing said adhesive to cure.

4. The method of claim 1, wherein said first prism wedge is rotated relative to said second prism wedge within a measurement cavity.

5. The method of claim 1, wherein said first prism wedge comprises a right cylinder having a wedge surface, a side surface, and an outer surface.

6. The method of claim 1, wherein said second prism wedge comprises a right cylinder having a wedge surface, a side surface, and an outer surface.

7. The method of claim 1, wherein said first prism wedge comprises an outer surface that is substantially perpendicular to a side surface of said first prism wedge.

8. The method of claim 1, wherein said second prism wedge comprises an outer surface that is substantially perpendicular to a side surface of said second prism wedge.

9. A method for producing an optical wedge or prism assembly, comprising:

selecting a pair of prism wedges, wherein each prism wedge comprises a wedge surface;

indexing said identified pair of prism wedges such that said wedge surfaces are adjacent to one another;

applying an adhesive to adjacent wedge surfaces of said aligned prism wedges;

rotating at least one of said prism wedges relative to said other prism wedge to obtain a desired angle between outer surfaces of said prism wedges; and

allowing said adhesive to cure.

10. The method of claim 9, wherein each wedge surface is defined by passing a diagonal cutting plane through said prism wedge.

11. The method of claim 9, wherein each prism wedge comprises a right cylinder.

12. The method of claim 9, wherein each prism wedge comprises a right cylinder having a side surface.

13. The method of claim 9, wherein an angle formed by each of said wedge surfaces are supplementary angles.

14. The method of claim 9, wherein allowing said adhesive to cure comprises allowing said adhesive to cure between at least a portion of said wedge surface of said first prism wedge and at least a portion of said wedge surface of said second prism wedge.

15. An optical wedge or prism assembly produced by:

selecting a first prism wedge and a second prism wedge, wherein said first prism wedge includes at least one wedge surface and wherein said second prism wedge includes a wedge surface;

indexing said first prism wedge and said second prism wedge such that said second prism wedge is rotated approximately 90°

relative to said first prism wedge and such that wedge surfaces of said first prism wedge and said second prism wedge are adjacent to one another;

applying an adhesive to adjacent wedge surfaces of said aligned prism wedges;

rotating at least one of said prism wedges relative to said other prism wedge to obtain a desired angle between said outer surfaces of said prism wedges; and

allowing said adhesive to cure to form said optical wedge or prism assembly.

16. The optical wedge or prism assembly of claim 15, wherein each wedge surface is defined by passing a diagonal cutting plane through said prism wedge.

17. The optical wedge or prism assembly of claim 15, wherein an angle formed by said first wedge surface and an angle formed by said second wedge surface are supplementary angles.

18. The optical wedge or prism assembly of claim 15, wherein each prism wedge comprises a right cylinder having a side surface.

19. The optical wedge or prism assembly of claim 15, wherein said outer surface of each prism wedge is substantially perpendicular to a side surface of each prism wedge.

20. The optical wedge or prism assembly of claim 15, wherein allowing said adhesive to cure comprises allowing said adhesive to cure between at least a portion of said wedge surface of said first prism wedge and at least a portion of said wedge surface of said second prism wedge.