Light adjustable aberration conjugator

• US 6,917,416 B2
• Filed: 02/23/2004
• Issued: 07/12/2005
• Est. Priority Date: 10/11/2000
• Status: Active Grant

• Current Assignee: RxSight, Inc.
• Original Assignee: Calhoun Vision, Inc.
• Inventors: Sandstedt, Christian A., Platt, Ben C.
• Primary Examiner(s): Evans, F. L.
• Assistant Examiner(s): GEISEL, KARA E
• Application Number:
  US10/784,656
• Publication Number:
  US 20040165179A1
• Time in Patent Office: 505 Days
• Field of Search: 356/124, 427/164, 427/264
• US Class Current: 356/124
• CPC Class Codes: G02B 26/06 for controlling the phase of light G02B26/08 takes precedence , measuring optical phase difference G01J9/00
• CPC Class Codes: G02B 27/0025 for optical correction, e.g. distorsion, aberration
• CPC Class Codes: G02B 27/0068 having means for controlling the degree of correction, e.g. using phase modulators, movable elements controlling the phase of light using moving or deformable elements G02B26/06
• CPC Class Codes: G02B 27/58 Optics for apodization or superresolution; Optical synthetic aperture systems

Abstract

A method of correcting aberrations in an optical system by applying a light adjustable aberration conjugator layer to a component of the system, determining the nature of the aberration, applying radiation to the conjugator layer such as to change the refraction and/or shape of the conjugator layer to compensate for the aberration, and locking in the desired optical property.

Claims

1. A method for correcting at least one aberration in an optical system, comprising:

providing a radiation adjustable layer to a component of the system;

determining the at least one aberration; and

applying radiation to the radiation adjustable layer such as to modify an optical characteristic of the radiation adjustable layer to at least partially compensate for the at least one aberration;

wherein the adjustable layer comprises a polymer matrix, and a radiation sensitive refraction modulating composition dispersed in the polymer matrix.

2. The method of claim 1 wherein the component is a refractive element.

3. The method of claim 1 wherein the component is a reflective element.

4. The method of claim 1 wherein the optical system is selected from the group consisting of:

a telescope, and a camera.

5. The method of claim 1 wherein the applying comprises:

applying the radiation in a pattern based on the determining the at least one aberration.

6. The method of claim 5 wherein the pattern is opposite in phase to the determined aberration.

7. The method of claim 5 wherein the applying comprises:

generating the radiation with a vertical-cavity surface-emitting laser array.

8. The method of claim 5 wherein the applying comprises:

using an apodizing filter having a predetermined transmission intensity profile to form the pattern.

9. The method of claim 5 wherein the applying comprises:

using a liquid crystal cell to form the pattern.

10. The method of claim 5 wherein the applying comprises:

using a spatial light modulator to form the pattern.

11. The method of claim 5 wherein the applying comprises:

using a digital light processor to form the pattern.

12. The method of claim 5 wherein the applying comprises:

p1 using a digital mirror device to form the pattern.

13. The method of claim 5 wherein the pattern has an intensity profile that changes as the radius of the pattern increases from the center of the pattern.

14. The method of claim 1 wherein the applying comprises:

controlling the radiation during the applying.

15. The method of claim 14 wherein the controlling comprises:

controlling at least one of intensity and duration of the radiation.

16. The method of claim 1 wherein the radiation is ultraviolet light.

17. The method of claim 1 wherein the determining comprises:

using a Shack-Hartmann sensor to determine the aberration.

18. The method of claim 1 further comprising:

irradiating, subsequent to applying, the adjustable layer to lock in the modified characteristic.

19. The method of claim 18, wherein the irradiating comprises:

applying a lock-in pattern that has a top hat intensity profile.

20. The method of claim 18, wherein the irradiating comprises:

applying a lock-in pattern that has an intensity profile that diminishes as the radius increases from the center.

21. An optical element comprising:

a portion that affects a path of incident light; and

a layer that is adjacent to the portion and is adjustable such that radiation modifies at least one optical characteristic of the layer;

wherein the layer comprises a polymer matrix, and a radiation sensitive refraction modulating composition dispersed in the polymer matrix.

22. The element of claim 21 wherein the element is a component of a optical system is selected from the group consisting of:

a telescope, and a camera.

23. The element of claim 21 wherein the element is a refractive element.

24. The element of claim 21 wherein the element is a reflective element.