Wearable display system adjusting magnification of an image

• US 20040004767A1
• Filed: 04/18/2003
• Published: 01/08/2004
• Est. Priority Date: 05/13/2002
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Song, Young-ran
• Application Number:
  US10/418,295
• Publication Number:
  US 20040004767A1
• Time in Patent Office: Days
• US Class Current: 359/566
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/0136 with a single image source for both eyes
• 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 5/18 Diffraction gratings holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44
• 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 6/0055 Reflecting element, sheet or layer

Abstract

A wearable display system to display an input image signal includes an objective lens, a grating, a waveguide, and an ocular lens. The objective lens magnifies the input image signal and the grating refracts the input image signal magnified by the objective lens at a predetermined angle. The waveguide transmits the input image signal refracted by the grating and the ocular lens magnifies the transmitted input image allowing a user to see the input image signal.

Claims

1. A wearable display system to display an input image signal, comprising:

an objective lens magnifying the input image signal;

a grating refracting the input image signal magnified by the objective lens at a predetermined angle;

a waveguide transmitting the input image signal refracted by the grating; and

an ocular lens making an image corresponding to the input image signal transmitted via the waveguide, allowing a user to see the input image signal.

2. The wearable display system according to claim 1, wherein an order of magnification of the input image signal is adjusted by varying focusing distances of the objective lens and/or the ocular lens.

3. The wearable display system according to claim 1, wherein the objective lens is movable to an input direction of the input image signal to adjust an order of magnification.

4. The wearable display system according to claim 1, wherein the waveguide is movable to an input direction of the image signal to adjust an order of magnification.

5. The wearable display system according to claim 1, wherein the waveguide comprises:

a coating plate of a highly reflective material to reflect and transmit the input image signal.

6. The wearable display system according to claim 1, wherein the grating is a hologram optics element.

7. The wearable display system according to claim 1, wherein the input image signal is produced at a focusing distance of the objective lens.

8. A wearable color display system to display red (R), green (G), and blue (B) color components of input image signals, comprising:

an objective lens magnifying the R, G, and B input image signals;

a grating refracting the R, G, and B color components of the input image signals magnified by the objective lens at predetermined angles;

a waveguide transmitting the R, G, and B color components of the input image signals refracted by the grating; and

an ocular lens making an image corresponding to the R, G, and B color components of the input image signals transmitted via the waveguide, allowing a user to see the input image signals.

9. The wearable color display system according to claim 8, wherein orders of magnification of the R, G, and B color components of the input image signals are adjusted by varying focusing distances of the objective lens and/or the ocular lens.

10. The wearable color display system according to claim 8, wherein the objective lens is movable to an input direction of the R, G, and B color components of the input image signals to adjust orders of magnification.

11. The wearable color display system according to claim 8, wherein the waveguide is movable to an input direction of the R, G, and B color components of the input image signals to adjust orders of magnification.

12. The wearable color display system according to claim 8, wherein the waveguide comprises:

a coating plate of a highly reflective material to reflect and transmit the R, G, and B color components of the input image signals.

13. The wearable color display system according to claim 8, wherein the grating is a hologram optics element.

14. The wearable color display system according to claim 8, wherein the R, G, and B color components of the input image signals are produced at a focusing distance of the objective lens.

15. The wearable color display system according to claim 8, wherein the grating is a multiplexing type grating to respectively refract the R, G, and B color components of the image signals at different angles from each other according to corresponding wavelengths, where the R, G, and B color components of the input image signals respectively move at constant distances within the waveguide.

16. The wearable color display system according to claim 8, wherein the grating is a lamination type grating having layers laminated in a predetermined order, where each layer refracts only one of the R, G, and B color components of the input image signals at an angle predetermined in accordance with corresponding wavelengths of the R, G, and G color components of the input image signals.

17. The wearable color display system according to claim 8, wherein the ocular lens is a multiplexing type lens to respectively refract and output the R, G, and B color components of the image signals at different angles from each other according to corresponding wavelengths, where the R, G, and B color components of the input image signals converge to an identical focus to make a combined image.

18. The wearable color display system according to claim 8, wherein the ocular lens is a lamination type lens having layers laminated in a predetermined order where, each of which refracts only one of the R, G, and B input image signals at an angle predetermined in accordance with corresponding wavelengths, and the R, G, and B color components of the image signals respectively refracted via the corresponding layer converge to an identical focus to make a combined image.