Augmented reality (AR) eyewear with at least one quasi Fresnel reflector (QFR)
This invention is Augmented Reality (AR) eyewear with a Quasi Fresnel Reflector (QFR) which reflects light rays from a lateral Light Emitter Array (LEA) toward a person's eye to create virtual images in the person's field of view. This eyewear can have two Quasi Fresnel Reflectors (QFRs), one for each of the person's eyes. A Quasi Fresnel Reflector (AFR) can have: an array of linear, partially-reflective, partially-transmissive surfaces; an array of nested, arcuate, partially-reflective, partially-transmissive surfaces; and/or a spoke-and-ring array of partially-reflective, partially-transmissive surfaces.
1. Augmented Reality (AR) eyewear comprising: a Light Emitter Array (LEA) which creates virtual images in a person's field of view; and a Quasi Fresnel Reflector (QFR) which is configured to be worn in front of the person's eye; wherein the QFR further comprises an array of partially-reflective, partially-transmissive surfaces; wherein the surfaces collectively reflect light beams from the LEA toward the person's eye to create virtual images in the person's field of view; wherein the orientation angle of a surface in the QFR is the LEA-facing angle of intersection between the surface and a virtual plane of the QFR; wherein a first subset of surfaces in the QFR has a first orientation angle and is a first distance from the LEA; wherein a second subset of surfaces in the QFR has a second orientation angle and is a second distance from the LEA; wherein a third subset of surfaces in the QFR has a third orientation angle and is a third distance from the LEA; wherein the second distance is greater than the first distance; wherein the third distance is greater than the second distance; wherein the second orientation angle is less than the first orientation angle; and wherein the third orientation angle is less than the second orientation angle.
2. The eyewear in claim 1 wherein surfaces in the array of partially-reflective, partially-transmissive surfaces are flat.
3. The eyewear in claim 1 wherein the Quasi Fresnel Reflector (QFR) comprises an array of linear, partially-reflective, partially-transmissive surfaces.
4. The eyewear in claim 1 wherein the Quasi Fresnel Reflector (QFR) comprises an array of nested, arcuate, partially-reflective, partially-transmissive surfaces.
5. The eyewear in claim 1 wherein the Quasi Fresnel Reflector (QFR) comprises a spoke-and-ring array of partially-reflective, partially-transmissive surfaces.
6. The eyewear in claim 1 wherein the Quasi Fresnel Reflector (QFR) has a cross-section with a saw-tooth shape.
7. The eyewear in claim 6 wherein teeth in the saw-tooth shape which are closer to the center of the QFR are closer together than teeth in the saw-tooth shape which are farther from the center of the Quasi Fresnel Reflector (QFR).
8. The eyewear in claim 1 wherein there is one Light Emitter Array (LEA) per Quasi Fresnel Reflector (QFR).
9. The eyewear in claim 1 wherein the Light Emitter Array (LEA) is annular and the Quasi Fresnel Reflector (QFR) comprises an array of nested, arcuate, partially-reflective, partially-transmissive surfaces.
10. The eyewear in claim 1 wherein the eyewear further comprises a Digital Micromirror Device (DMD) which receives light beams from the Light Emitter Array (LEA) and reflects those light beams toward the Quasi Fresnel Reflector (QFR).
11. Augmented Reality (AR) eyewear comprising:
a Light Emitter Array (LEA) which creates virtual images in a person's field of view; and
a Quasi Fresnel Reflector (QFR) which is configured to be worn in front of the person's eye; wherein the QFR further comprises an array of partially-reflective, partially-transmissive surfaces; wherein the surfaces collectively reflect light beams from the LEA toward the person's eye to create virtual images in the person's field of view; wherein surfaces that are closer to the center of the QFR are closer together than surfaces which are farther from the center of the QFR.
12. The eyewear in claim 11 wherein surfaces in the array of partially-reflective, partially-transmissive surfaces are flat.
13. The eyewear in claim 11 wherein the Quasi Fresnel Reflector (QFR) comprises an array of linear, partially-reflective, partially-transmissive surfaces.
14. The eyewear in claim 11 wherein the Quasi Fresnel Reflector (QFR) comprises an array of nested, arcuate, partially-reflective, partially-transmissive surfaces.
15. The eyewear in claim 11 wherein the Quasi Fresnel Reflector (QFR) comprises a spoke-and-ring array of partially-reflective, partially-transmissive surfaces.
16. The eyewear in claim 11 wherein the Quasi Fresnel Reflector (QFR) has a cross-section with a saw-tooth shape.
17. The eyewear in claim 11 wherein there is one Light Emitter Array (LEA) per Quasi Fresnel Reflector (QFR).
18. The eyewear in claim 11 wherein the Light Emitter Array (LEA) is annular and the Quasi Fresnel Reflector (QFR) comprises an array of nested, arcuate, partially-reflective, partially-transmissive surfaces.
19. The eyewear in claim 11 wherein the eyewear further comprises a Digital Micromirror Device (DMD) which receives light beams from the Light Emitter Array (LEA) and reflects those light beams toward the Quasi Fresnel Reflector (QFR).
20. Augmented Reality (AR) eyewear comprising: a Light Emitter Array (LEA) which creates virtual images in a person's field of view; and a Quasi Fresnel Reflector (QFR) which is configured to be worn in front of the person's eye; wherein the QFR further comprises an array of partially-reflective, partially-transmissive surfaces; wherein the surfaces collectively reflect light beams from the LEA toward the person's eye to create virtual images in the person's field of view; wherein surfaces that are farther from the LEA extend out farther from a virtual plane of the QFR than surfaces which are closer to the LEA.