Substrate-guide optical device

• US 10,732,415 B2
• Filed: 05/21/2018
• Issued: 08/04/2020
• Est. Priority Date: 02/10/2005
• Status: Active Grant

• Current Assignee: Lumus Ltd.
• Original Assignee: Lumus Ltd.
• Inventors: Amitai, Yaakov
• Primary Examiner(s): Chapel, Derek S.
• Application Number:
  US15/984,461
• Publication Number:
  US 20180267317A1
• Time in Patent Office: 806 Days
• Field of Search: None
• CPC Class Codes: B29D 11/0073 Optical laminates
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0125 Field-of-view increase by wavefront division
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0136 with a single image source for both eyes
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/0081 with means for altering, e.g. enlarging, the entrance or exit pupil
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0176 characterised by mechanical features
• CPC Class Codes: G02B 27/1066 for enhancing image performance, like resolution, pixel numbers, dual magnifications or dynamic range, by tiling, slicing or overlapping fields of view
• CPC Class Codes: G02B 27/1073 characterized by manufacturing or alignment methods
• CPC Class Codes: G02B 27/14 operating by reflection only
• CPC Class Codes: G02B 27/144 using partially transparent surfaces without spectral selectivity G02B27/147 takes precedence
• CPC Class Codes: G02B 27/145 having sequential partially reflecting surfaces
• CPC Class Codes: G02B 27/283 used for beam splitting or combining
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
• CPC Class Codes: G02B 6/003 : Lens or lenticular sheet or layer
• CPC Class Codes: G02B 6/0031 : Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0055 : Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0056 : for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
• CPC Class Codes: G02B 6/105 : having optical polarisation effects
• CPC Class Codes: G02C 11/10 : Electronic devices other than hearing aids

Abstract

Optical systems, including a mechanical body, a display source, a light-transmitting substrate, an optical device, an image processing unit and an image capturing device. The light-transmitting substrate is in communication with the mechanical body. The optical device couples light waves from the display source into the light-transmitting substrate by total internal reflection. The image processing unit is linked to the display source and is in communication with the mechanical body. The image capturing unit is linked to the image processing unit and is in communication with the mechanical body and has a user controllable zoom position.

Claims

1. An optical system, comprising:

a mechanical body;

at least one display source;

at least one image capturing device mounted to a front region of the mechanical body, the at least one image capturing device having a user controllable zoom position and configured to capture at least one magnified image of an external scene;

at least one image processing unit attached to the mechanical body, and linked to the at least one display source and the at least one image capturing device,

wherein the at least one image processing unit is user controllable in real-time and is configured to;

receive, from the at least one image capturing device, image signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the mechanical body;

an optical device for coupling the image light waves emitted by the at least one display source into the light-transmitting substrate by total internal reflection; and

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the mechanical body,

wherein the external scene is directly viewable to the wearer of the mechanical body through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the mechanical body, and wherein the mechanical body is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one image processing unit, the at least one light-transmitting substrate, and the optical device are integrated in the mechanical body.

2. The optical system of claim 1, wherein the coupling-out optical arrangement includes a plurality of partially reflecting surfaces.

3. The optical system of claim 1, further comprising:

a hand-held mobile device mechanically separate from the mechanical body and electronically connectable to the at least one display source and operative to control the at least one display source.

4. The optical system of claim 1, wherein the optical system functions as a low-vision aid.

5. The optical system of claim 1, wherein the optical system functions as a virtual reality system.

6. The optical system of claim 1, wherein the optical system functions as a training system.

7. An optical system, comprising:

a head-mounted mechanical body;

at least one display source;

at least one image capturing device mounted to a front region of the head-mounted mechanical body and configured to capture at least one magnified image of an external scene;

at least one real-time user-controllable image processing unit attached to the head-mounted mechanical body, and linked to the at least one display source and the at least one image capturing device, wherein the at least one real-time user-controllable image processing unit is configured to;

receive, from the at least one image capturing device, image signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the head-mounted mechanical body;

an optical device for coupling image light waves from the at least one display source into the light-transmitting substrate by total internal reflection; and

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the head-mounted mechanical body,

wherein the external scene is directly viewable to the wearer of the head-mounted mechanical body through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the head-mounted mechanical body, and wherein the head-mounted mechanical body is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one real-time user-controllable image processing unit, the at least one light-transmitting substrate, and the optical device are integrated in the head-mounted mechanical body.

8. The optical system of claim 7, wherein the at least one image capturing device is a miniature video camera.

9. The optical system of claim 7, wherein the optical system functions as a low-vision aid.

10. The optical system of claim 7, wherein the optical system functions as a virtual reality system.

11. The optical system of claim 7, wherein the optical system functions as a training system.

12. A system, comprising:

a first device;

at least one display source operatively coupled to the first device;

at least one image capturing device mounted to a front region of a mechanical body of the first device and configured to capture at least one magnified image of an external scene;

at least one image processing unit attached to the first device, and linked to the at least one display source and the at least one image capturing device,

wherein the at least one image processing unit is user controllable in real-time and is configured to;

receive, from the at least one image capturing device, signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the first device;

an optical device for coupling image light waves from the at least one display source into the at least one light-transmitting substrate by total internal reflection;

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the mechanical body of the first device; and

a second device mechanically separated from the first device, the second device being electronically connectable to the first device and operative to control the first device, and the second device being a hand-held device,

wherein the external scene is directly viewable to the wearer of the mechanical body of the first device through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the mechanical body of the first device, and wherein the mechanical body of the first device is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one image processing unit, the at least one light-transmitting substrate, and the optical device are integrated in the mechanical body of the first device.

13. The system of claim 12, wherein the second device is a pocket-carried computing device.

14. The system of claim 12, wherein the second device is a compact entertainment device.

15. An optical system, comprising:

a mechanical body;

at least one display source;

at least one image capturing device mounted to a front region of the mechanical body, the at least one image capturing device having a user controllable zoom position and configured to capture at least one magnified image of an external scene;

at least one image processing unit attached to the mechanical body, and linked to the at least one display source and the at least one image capturing device,

wherein the at least one image processing unit is user controllable in real-time and is configured to;

receive, from the at least one image capturing device, image signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the mechanical body;

an optical device for coupling the image light waves emitted by the at least one display source into the light-transmitting substrate by total internal reflection; and

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the mechanical body, wherein the external scene is directly viewable to the wearer of the mechanical body through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the mechanical body, and wherein the mechanical body is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one image processing unit, the at least one light-transmitting substrate, and the optical device are attached to the mechanical body such that the at least one display source, the at least one image capturing device, the at least one image processing unit, and the optical device are located next to an edge of the at least one light-transmitting substrate.

16. An optical system, comprising:

a head-mounted mechanical body;

at least one display source;

at least one image capturing device mounted to a front region of the head-mounted mechanical body and configured to capture at least one magnified image of an external scene;

at least one real-time user-controllable image processing unit attached to the head-mounted mechanical body, and linked to the at least one display source and the at least one image capturing device, wherein the at least one real-time user-controllable image processing unit is configured to;

receive, from the at least one image capturing device, image signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the head-mounted mechanical body;

an optical device for coupling image light waves from the at least one display source into the light-transmitting substrate by total internal reflection; and

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the head-mounted mechanical body,

wherein the external scene is directly viewable to the wearer of the head-mounted mechanical body through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the head-mounted mechanical body, and wherein the head-mounted mechanical body is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one image processing unit, the at least one light-transmitting substrate, and the optical device are attached to the head-mounted mechanical body such that the at least one display source, the at least one image capturing device, the at least one image processing unit, and the optical device are located next to an edge of the at least one light-transmitting substrate.

17. A system, comprising:

a first device;

at least one display source operatively coupled to the first device;

at least one image capturing device mounted to a front region of a mechanical body of the first device and configured to capture at least one magnified image of an external scene;

at least one image processing unit attached to the first device, and linked to the at least one display source and the at least one image capturing device,

wherein the at least one image processing unit is user controllable in real-time and is configured to;

receive, from the at least one image capturing device, signals associated with the at least one magnified image of the external scene captured by the at least one image capturing device,

process the received image signals as a magnified processed image of the external scene, and

transfer the magnified processed image of the external scene to the at least one display source, wherein the at least one display source emits light waves corresponding to the magnified processed image of the external scene;

at least one light-transmitting substrate having a plurality of surfaces including at least two major external surfaces, the at least one light-transmitting substrate in communication with the first device;

an optical device for coupling image light waves from the at least one display source into the at least one light-transmitting substrate by total internal reflection;

a coupling-out optical arrangement for coupling the image light waves out of the light-transmitting substrate into at least one eye of a wearer of the mechanical body of the first device; and

a second device mechanically separated from the first device, the second device being electronically connectable to the first device and operative to control the first device, and the second device being a hand-held device,

wherein the external scene is directly viewable to the wearer of the mechanical body of the first device through the at least two major external surfaces, such that, the external scene and the magnified processed image of the external scene are viewed simultaneously by the wearer of the mechanical body of the first device, and wherein the mechanical body of the first device is implemented as a spectacle frame, and wherein the at least one display source, the at least one image capturing device, the at least one image processing unit, the at least one light-transmitting substrate, and the optical device are attached to the mechanical body of the first device such that the at least one display source, the at least one image capturing device, the at least one image processing unit, and the optical device are located next to an edge of the at least one light-transmitting substrate.