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1. US20160209656 - Image display device in the form of a pair of eye glasses comprising micro reflectors

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

Claims

1. An image display device in the form of a pair of eye glasses comprising:
at least one spatial light modulator in the form of a planarly extending medium having a first side and a second opposite side and being mounted on a glass position of said eye glasses,
at least one point light source, wherein the light source is placed at a first first side region relative to the spatial light modulator such that the light source directly illuminates a first side surface of the spatial light modulator, and
wherein a matrix of micro reflectors that are attached on a second side surface of the spatial light modulator (SLM) and direct the light from the light source in the direction of at least one viewing region at a second first side region relative to said spatial light modulator, such that diverging illumination created by said point light source is converted to a converging illumination by said matrix of a micro-reflectors.
2. The image display device according to claim 1 wherein the spatial light modulator is a liquid crystal display (LCD).
3. The image display device according to claim 2 wherein the LCD is a phase only spatial light modulator.
4. The image display device according to claim 1 wherein the micro reflector is semi-transparent.
5. The image display device according to claim 1 wherein the micro reflector is coated with thin metal layer.
6. The image display device according to claim 1 wherein the micro reflectors are embedded between two layers with the same refractive index.
7. The image display device according to claim 1 wherein the light from the light source is reflected in the direction of the center of the pupil to form a small exit pupil display.
8. The image display device according to claim 1 comprising a plurality of filters that reflect only the wavelengths corresponding to the emission band of the light sources.
9. The image display device according to claim 1 wherein the spatial light modulator is coupled with a polarizer film.
10. The image display device according to claim 1 wherein the size of each micro reflector is the same size or larger than the SLM pixels and the spacing between the micro reflectors are non-periodic to avoid any visible diffraction artefacts and Moiré patterns.
11. The image display device according to claim 1 wherein the point light source is located on the frame of the eyeglasses.
12. The image display device according to claim 1 wherein in the point light source located on the nose bridge of the eyeglasses.
13. The image display device according to claim 1 wherein in the point light source is narrowband sources such as lasers diodes or VCSELs.
14. The image display device according to claim 1 wherein in the point light source is coupled with a polarizer.
15. The image display device according to claim 1 wherein a pair of image display devices provide illumination to the right and left eyes.
16. The image display device according to claim 1 wherein the micro reflectors that are actively controlled to track the pupil of the viewer's eye.
17. The image display device according to claim 1 wherein the micro reflectors are actively controlled to adjust the brightness of the electronic display and the natural scene.
18. The image display device according to claim 1 wherein the SLM pixel intensity is controlled using an array of programmable micro reflectors.
19. The image display device according to claim 1 further comprises at least four point light sources, at least two for each of the viewer's eye.
20. The image display device according to claim 1 wherein a set of red, green, and blue light sources are selected from LEDs or laser diodes.
21. The image display device according to claim 1 wherein a pupil tracker camera detects the position of the pupil of the viewer's eye.
22. The image display device according to claim 1 wherein the light sources are in optical conjugate position to the pupil of the viewer's eye which is turned ON.
23. The image display device according to claim 1 wherein an exit pupil replicator coupled with the micro reflectors.