Method and system for integration of refractive optics with a diffractive eyepiece waveguide display
AssigneeMagic Leap, Inc.
InventorsChulwoo Oh, Ravi Kumar Komanduri, Vikramjit Singh, Shuqiang Yang, Frank Y. Xu
Life of this patent
Estimating the term…
Abstract
A method of fabricating an optical element includes providing a substrate, forming a castable material coupled to the substrate, and casting the castable material using a mold. The method also includes curing the castable material and removing the mold. The optical element includes a planar region and a clear aperture adjacent the planar region and characterized by an optical power.
Claims20
A method of fabricating an optical element, the method comprising:
- providing a substrate;
- forming a castable material coupled to the substrate;
- casting the castable material using a mold;
- curing the castable material;
- and
- removing the mold;
- wherein the optical element comprises a planar region and a clear aperture adjacent the planar region and characterized by an optical power.
A viewing optics assembly including a viewing area, the viewing optics assembly comprising:
- a first cover plate including a first region having a first optical power and a first planar region laterally adjacent to the first region and positioned outside the viewing area;
- a waveguide having a world side and a user side;
- and
- a second cover plate having a second optical power, wherein the first optical power and second optical power have different values with respect to each other;
- wherein the waveguide is disposed between the first cover plate and the second cover plate.
The viewing optics assembly of claim 11 wherein:
- the first cover plate is disposed adjacent the world side of the waveguide;
- and
- the second cover plate is disposed adjacent the user side of the waveguide.
The viewing optics assembly of claim 11 wherein the first optical power is positive and the second optical power is negative.
The viewing optics assembly of claim 11 wherein the first optical power and an absolute value of the second optical power are equal.
The viewing optics assembly of claim 11 wherein the first region of the first cover plate comprises nano-features.
The viewing optics assembly of claim 11 wherein the second cover plate includes a second region having the second optical power, wherein the second region comprises nano-features.
The viewing optics assembly of claim 11 wherein the second cover plate comprises a second region having the second optical power and a second planar region laterally 2 adjacent to the second region, wherein the second region is positioned outside the viewing area.
The viewing optics assembly of claim 11 wherein:
- the first cover plate is separated from the world side of the waveguide by a first distance;
- and
- the second cover plate is separated from the user side of the waveguide by a second distance.
The viewing optics assembly of claim 11 wherein:
- the second cover plate is configured to diverge light rays generated by the waveguide;
- and
- the first cover plate is configured to compensate for the second optical power of the second cover plate.
Dependencies are inferred from the claim text.