Electro-optic lens with integrated components

• US 7,023,594 B2
• Filed: 03/12/2003
• Issued: 04/04/2006
• Est. Priority Date: 06/23/2000
• Status: Expired due to Term

• Current Assignee: E-Vision Optics LLC
• Original Assignee: e-Vision, LLC (New Smart Optics, Inc.)
• Inventors: Blum, Ronald D., Duston, Dwight P., Kokonaski, William
• Primary Examiner(s): Schwartz, Jordan M.
• Assistant Examiner(s): Stultz, Jessica
• Application Number:
  US10/387,143
• Publication Number:
  US 20030231293A1
• Time in Patent Office: 1,119 Days
• Field of Search: 359/240, 359/245, 359/315, 359/624, 359/647, 359/721, 351/159, 351164- 5, 351/169, 351/177
• US Class Current: 351/177
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02C 2202/16 Laminated or compound lenses
• CPC Class Codes: G02C 2202/18 Cellular lens surfaces
• CPC Class Codes: G02C 2202/20 Diffractive and Fresnel lenses or lens portions
• CPC Class Codes: G02C 2202/22 Correction of higher order and chromatic aberrations, wave front measurement and calculation
• CPC Class Codes: G02C 7/083 Electrooptic lenses
• CPC Class Codes: G02C 7/101 having an electro-optical light valve electro-optical elements per se G02F
• CPC Class Codes: G02F 1/133371 Cells with varying thickness of the liquid crystal layer
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/13415 Drop filling process
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/29 for the control of the position or the direction of light beams, i.e. deflection
• CPC Class Codes: G02F 1/294 Variable focal length devices

Abstract

A range finder device for use with a controller in an optical system is disclosed in accordance with one embodiment of the invention. The range finder device comprises a transmitter to produce a first beam of non-visible radiation for intersecting a perceived object, and a receiver to detect non-visible radiation reflected from that object. The controller determines a viewing distance of the perceived object based on signals received from the transmitter and receiver. A method of controlling an optical lens system comprises utilizing a range finder device to determine a viewing distance of an object perceived through an electro-active lens and adjusting a focal length of a portion of the lens based on the viewing distance. An optical lens system comprises an electro-active lens and a controller to adjust a focal length of at least a portion of the electro-active lens based on a signal from a range finder device.

Claims

1. A method of utilizing an electro-active optical system to locate an optical image in three-dimensional space along an optical axis, comprising:

utilizing a first electro-active element to shift the optical image horizontally in a first plane perpendicular to the optical axis;

utilizing a second electro-active element to shift the optical image vertically in the first plane perpendicular to the optical axis;

utilizing a view detector to determine a first distance of the optical image along the optical axis;

analyzing the first distance to determine an optical power adjustment for focusing the optical image; and

adjusting an optical power of a third element by the optical power adjustment to focus the optical image, wherein the view detector comprises a range finder device and a tilt switch.

3. The method of claim 1, wherein the range finder device comprises a transmitter configured to produce a first beam of non-visible radiation for intersecting a perceived object and a receiver configured to detect a second beam of non-visible radiation reflected from the perceived object.

4. The method of claim 3, wherein the range finder device further comprises at least one device to manipulate a beam of non-visible radiation.

5. The method of claim 4 wherein the device that manipulates the beam of non-visible radiation manipulates the first beam produced by the transmitter.

6. The method of claim 5 wherein the device that manipulates the first beam comprises a diverging lens selectively covering the transmitter.

7. The method of claim 4 wherein the device that manipulates the beam of non-visible radiation manipulates the second beam of non-visible radiation received by the receiver, wherein the second beam of non-visible radiation is an acceptance cone.

8. The method of claim 4 wherein the device that manipulates the beam of non-visible radiation further comprises a receiving lens selectively covering the receiver, the receiving lens configured to adjust an acceptance cone received by the receiver.

9. The method of claim 8 wherein the receiving lens is constructed of an opaque material.

10. The method of claim 8 wherein the receiving lens includes a slit aperture.

11. The method of claim 10 wherein the slit aperture is substantially rectangular.

12. The method of claim 3 wherein the transmitter is a laser diode.

13. The method of claim 3 wherein the transmitter is an LED.

14. The method of claim 3 wherein the transmitter and the receiver are both coupled to a power source.

2. An optical lens system comprising:

an electro-active lens;

a tilt switch; and

a controller coupled to the electro-active lens configured to adjust a focal length of at least a portion of the electro-active lens based on a signal from the tilt switch.

15. The optical lens system of claim 2, further comprising:

a transmitter configured to produce a first beam of non-visible radiation for intersecting a perceived object and a receiver configured to detect a second beam of non-visible radiation reflected from the perceived object.

16. The optical lens system of claim 15 further comprising:

at least one device to manipulate a beam of non-visible radiation.

17. The optical lens system of claim 16 wherein the device that manipulates the beam of non-visible radiation manipulates the first beam produced by the transmitter.

18. The optical lens system of claim 17 wherein the device that manipulates the first beam comprises a diverging lens selectively covering the transmitter.

19. The optical lens system of claim 16 wherein the device that manipulates the beam of non-visible radiation manipulates the second beam of non-visible radiation received by the receiver, wherein the second beam of non-visible radiation is an acceptance cone.

20. The optical lens system of claim 16 wherein the device that manipulates the beam of non-visible radiation further comprises:

a receiving lens selectively covering the receiver, the receiving lens configured to adjust an acceptance cone received by the receiver.

21. The optical lens system of claim 20 wherein the receiving lens is constructed of an opaque material.

22. The optical lens system of claim 20 wherein the receiving lens includes a slit aperture.

23. The optical lens system of claim 22 wherein the slit aperture is substantially rectangular.

24. The optical lens system of claim 15 wherein the transmitter is a laser diode.

25. The optical lens system of claim 15 wherein the transmitter is an LED.

26. The optical lens system of claim 15 wherein the transmitter and the receiver are both coupled to a power source.

27. The optical lens system of claim 15 wherein the controller is configured to determine a viewing distance of the perceived object based on signals received from the transmitter and receiver.