Near-Eye-Display (NED) that Employs Rapid Spherical Image Scanning

• US 20180284459A1
• Filed: 09/19/2017
• Published: 10/04/2018
• Est. Priority Date: 09/19/2016
• Status: Active Grant

• Current Assignee: George Mataban Calm
• Original Assignee: George Mataban Calm
• Inventors: Calm, George Mataban
• Granted Patent: US 10,310,273 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/0123 comprising devices increasing the field of view
• CPC Class Codes: G02B 2027/013 comprising a combiner of particular shape, e.g. curvature
• CPC Class Codes: G02B 27/0081 with means for altering, e.g. enlarging, the entrance or exit pupil
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0189 Sight systems
• CPC Class Codes: G02B 27/283 used for beam splitting or combining
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 6/0008 the light being emitted at the end of the fibre
• CPC Class Codes: G02B 6/08 with fibre bundle in form of plate

Abstract

A NED-RapSIS with concentric imaging and optical elements comprising a display with spherically curved concave image surface topped with polarizer; a spherically curved concave composite reflector having polar arrayed alternating mirror-quarterwavelength retarder strips, and clear optical slits; a spherically curved transparent counter-balance; a motor-driven driving crank near the edges that drives the reflector and counter-balance to circular-spherical movement; a slave crank near the opposite edge of composite reflector with its shaft and crank arms aligned to the concentric center another slave crank near the opposite edge of the counter-balance with its shaft and crank arms aligned with the shaft and crank arms respectively of the latter crank and aligned with the concentric center; a see-thru spherically curved mirror-polarizer composite with mirror at the convex side and polarizer at the concave side, and a support frame.

Claims

1. A near eye display (NED) device comprising;

a frame with concentric imaging and optical elements said imaging element having a spherically curved concave image surface topped with polarizer;

a spherically and circularly rotating tandem of a spherically curved concave composite reflector, and a spherically curved transparent counter-balance;

means to rotate the composite reflector and its counter-balance;

a see-thru spherically curved mirror-polarizer composite with mirror at the convex side and polarizer at the concave side;

a frame to support, protect the device, and mount the device to the head.

2. The device of claim 1 further including one or more guides to constrain both the composite mirror and the counter-balance to spherical movements.

3. The device of claim 1 wherein the said display is a spherically curved transparent concave display including an LCD occluder on the convex side with a separate controller circuit.

4. The device of claim 3 further including an occluding optical system.

5. The device of claim 1 wherein the said display is a cylindrically curved display topped with fiber-optic faceplate on the concave side wherein the concave surface of the fiber-optic faceplate is topped with polarizer.

6. The device of claim 5 wherein the said display is a transparent cylindrically curved display, topped at the convex side with LCD occluder that is topped again at convex side with fiber-optic faceplate with the convex surface topped with polarizer and an occluding optical system.

7. An imaging device including:

a curved display, said display having a convex and a concave surface, and operable to show an image on the concave surface;

a polarizer coupled to said concave surface;

a movable frame, said frame coupled to a motor-driven drive shaft;

a curved composite reflector disposed on the movable frame, said reflector including an array of alternating mirror-quarterwavelength retarder strips, and clear optical slits, and

a control circuit, said circuit operable to control one or both of the image on the curved display or the motor-driven drive shaft.

8. The device of claim 7 further including a motor-driven counter-balance member disposed said counter balance including a curved transparent reflector and optically aligned to the composite reflector.

9. The device of claim 8 wherein the counter-balance and composite reflector are driven substantially in synchronization.

10. The device of claim 8 further including substantially transparent mirror coupled to a polarizer.

11. The device of claim 7 further including:

an optical occluder disposed in optical alignment with the curved display, said occluder coupled a control circuit operable to control light through the optical occluder.