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See Through Display Optic Structure
Abstract: An optical structure useful in a see through head mounted display apparatus allows is provided. A first and a second partially reflective and transmissive elements are configured to receive the output of any number of optical sources via an optical element. Each reflective and transmissive element is positioned along an optical viewing axis for a wearer of the device with an air gap between the elements. Each reflective and transmissive element has a geometric axis which is positioned in an off axis relationship with respect to the optical viewing axis. The off axis relationship may comprise the geometric axis of one or both elements being at an angle with respect to the optical viewing axis and/or vertically displaced with respect to the optical viewing axis.
Notices, Deadlines & Correspondence
Patent Information
Applicants
MICROSOFT CORPORATION
Inventors
1. YEE, Dawson
2. HUDMAN, Joshua
Specification
I/We Claim;
1. An optical display system adapted to output an image to an optical viewing axis, comprising:
an image source;
a first optical element having a first surface for receiving light from the image source and which is convex and partially reflective and transmissive, and a second surface which is transmissive .
a second optical element having a first surface for receiving light reflected from the first surface of the first optical element which is concave and partially reflective and transmissive, and a second surface which is transmissive, and wherein respective optical axes of the first and second optical elements are positioned at respective tilt angles and respective displacement offsets with respect to the optical viewing axis.
2 The system of claim 1 further including a third optical element positioned between
the image source and the first and second optical elements.
3. The system of claim 1 wherein the respective displacement offsets are vertical displacements with respect to the optical viewing axis.
4. The system of claim 1 wherein at least one of the optical elements comprises an aspherical optical element. .
5. The system of claim 2 wherein the third optical element is a varifocal element.
6. The system of claim 1 wherein the first optical element and the second optical element comprise uniform plastic substrates .
7. The system of claim 4 wherein the first optical element and the second optical element are separated by an air gap.
8. The system of claim 1 wherein each said optical element is aspherical, and wherein the first surface of die first optical element opposes the first surface of the second optical element.
9. A see through head mounted display, comprising:
a frame; and the optical display system of claim 1 wherein the image source comprises
a display having an output; and wherein the optical viewing axis provides a viewing axis for a wearer of the frame and die optical elements provide the output to me optical viewing axis.
10. The see dirough head mounted display of claim 9 further including a diird optical element positioned between the display and the first and second optical elements.
11. The see through head mounted display of claim 10 wherein at least one optical element is aspherical.
12. The optical display system of claim 1 wherein the image source is
a micro display.