Head-mounted display with volume substrate-guided holographic continuous lens optics
OwnerFedor Dimovinventor
Life of this patent
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Abstract
This application relates to a see-through head-mounted display using recorded substrate-guided holographic continuous lens (SGHCL) and a scanning laser beam that creates an image on a diffuser or a microdisplay with laser illumination. The high diffraction efficiency of the volume SGHCL creates very high luminance of the virtual image.
Claims22
A holographic substrate-guided head-mounted see-through display comprising:
- (a) an image source comprising a scanning laser beam or a microdisplay with laser illumination;
- (b) an edge-illuminated transparent substrate;
- (c) a single volume substrate-guided holographic continuous lens (SGHCL);
- and
- (d) a diffuser;
- wherein the scanning laser beam creates an image on the diffuser, and
- wherein upon playback, an incident guided beam experiences total internal reflection and hits the SGHCL at Bragg condition.
A method of recording a volume reflection SGHCL comprising shining two beams onto a holographic polymer index-matched to a substrate, wherein a first recording beam is guided from an edge of the substrate and convergent to a first focus point and a second recording beam is a divergent beam, and wherein both beams cover the holographic polymer.
A recording system for a reflection RGB SGHCL comprising:
- a) a glass substrate;
- b) a thin holographic polymer laminated to the glass substrate;
- c) a first glass block attached to the holographic polymer wherein the first glass block is index matched to the glass substrate;
- d) a wedged prism attached to the first glass block on a side of the first glass block that is adjacent to the glass substrate;
- e) a long focus spherical achromatic lens attached to the wedged prism;
- f) a cylinder lens near the spherical achromatic lens;
- g) a second glass block attached to the glass substrate;
- h) a lens with large numerical aperture in the vicinity of the second glass block;
- and
- i) two collimated RGB recording beams, wherein a first recording beam is convergent in a vertical plane focused in point O1 using the long focus spherical achromatic lens, which eliminates astigmatism;
- wherein a second RGB recording beam is divergent with focus in point O2 created by the lens with large numerical aperture.
Smart glasses comprising:
- a) a frame having two side arms;
- b) prescription lenses having an absorptive layer on one side;
- c) a battery within the side arm;
- d) earphones within the side arm;
- e) a laser projector for projecting laser beams located within the side arm;
- f) a scanner within the side arm;
- g) a turning mirror within the frame for redirecting the path of the laser beams;
- h) a diffuser adjacent to the prescription lenses;
- and
- i) a substrate-guided-holographic continuous lens integrated with the prescription lenses;
- wherein the diffuser with the image serves as the image source.
Dependencies are inferred from the claim text.