SEE-THROUGH COMPUTER DISPLAY SYSTEMS

• US 20160170209A1
• Filed: 08/25/2015
• Published: 06/16/2016
• Est. Priority Date: 01/21/2014
• Status: Active Grant

• Current Assignee: Mentor Acquisition One, LLC (Magic Leap, Inc.)
• Original Assignee: Osterhout Design Group
• Inventors: Border, John N., Haddick, John D.
• Granted Patent: US 9,684,171 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 13/22 Telecentric objectives or lens systems
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• 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 2027/0134 of stereoscopic type
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0147 comprising a device modifying the resolution of the displayed image
• CPC Class Codes: G02B 2027/015 involving arrangement aiming to get less bulky devices
• CPC Class Codes: G02B 2027/0152 involving arrangement aiming to get lighter or better balanced devices
• CPC Class Codes: G02B 2027/0159 with mechanical means other than scaning means for positioning the whole image
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 2027/0194 with combiner of laminated type, for optical or mechanical aspects
• CPC Class Codes: G02B 26/0833 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD G02B26/0825 takes precedence; micromechanical devices in general B81B
• CPC Class Codes: G02B 27/0093 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
• CPC Class Codes: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 : characterised by optical features
• CPC Class Codes: G02B 27/0176 : characterised by mechanical features
• CPC Class Codes: G02B 27/1033 : having a single light modulator for all colour channels
• CPC Class Codes: G02B 27/14 : operating by reflection only
• CPC Class Codes: G02B 27/141 : using dichroic mirrors
• CPC Class Codes: G02B 27/283 : used for beam splitting or combining
• CPC Class Codes: G02B 30/34 : Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
• CPC Class Codes: G02B 5/003 : Light absorbing elements
• CPC Class Codes: G02B 5/28 : Interference filters
• CPC Class Codes: G02B 5/285 : comprising deposited thin solid films G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361
• CPC Class Codes: G02B 5/30 : Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 7/08 : adapted to co-operate with a remote control mechanism
• CPC Class Codes: G06F 1/163 : Wearable computers, e.g. on a belt
• CPC Class Codes: G06F 3/005 : Input arrangements through a video camera
• CPC Class Codes: G06F 3/012 : Head tracking input arrangements
• CPC Class Codes: G06F 3/013 : Eye tracking input arrangements G06F3/015 takes precedence
• CPC Class Codes: G06F 3/017 : Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 5/10 : having a sequence of storage locations each being individually accessible for both enqueue and dequeue operations, e.g. using random access memory G06F5/065 takes precedence
• CPC Class Codes: G06T 19/006 : Mixed reality object pose determination, tracking or camera calibration for mixed reality G06T7/00
• CPC Class Codes: G06T 3/20 : Linear translation of whole images or parts thereof, e.g. panning
• CPC Class Codes: G06V 40/18 : Eye characteristics, e.g. of the iris
• CPC Class Codes: G09G 2310/0235 : Field-sequential colour display
• CPC Class Codes: G09G 2340/0471 : Vertical positioning
• CPC Class Codes: G09G 2340/0478 : Horizontal positioning
• CPC Class Codes: G09G 3/2003 : Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/32 : semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 : organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3225 : using an active matrix
• CPC Class Codes: G09G 3/3233 : with pixel circuitry controlling the current through the light-emitting element
• CPC Class Codes: G09G 3/34 : by control of light from an independent source

Abstract

Aspects of the present invention relate to methods and systems for the see-through computer display systems with a wide field of view.

Claims

1. A head mounted display providing a wide display field of view and a high transmission see-through view of the surrounding environment with improved visual uniformity of a displayed image to a user comprising:

a. upper optics with a first optical axis including;

i. an emissive image source that provides image light;

ii. one or more lenses; and

b. non-polarized lower optics with a second optical axis including;

i. a planar partially reflective beam splitter angled relative to the first and second optical axes; and

ii. a curved partially reflective mirror; and

wherein at least one of the partially reflective surfaces includes a notch mirror treatment.

2. The head mounted display of claim 1 wherein the upper optics provide telecentric light to the lower optics to improve uniformity in the displayed image by reducing the angular extent of a light associated with the displayed image incident onto a surface that includes a notch mirror treatment.

3. The head mounted display of claim 1 wherein the displayed image is digitally modified to radially increase the digital brightness in the displayed image to compensate for radial brightness rolloff from the notch mirror treatment.

4. The head mounted display of claim 1 wherein the displayed image is digitally modified to radially increase the color rendering in the displayed image to compensate for angularly based color changes from the notch mirror treatment.

5. The head mounted display of claim 1 wherein the notch mirror treatment reflects narrow bands of red, green and blue light.

6. The head mounted display of claim 5 wherein the narrow bands of red, green and blue light are matched to the bands of colored light output by the emissive display.

7. The head mounted display of claim 1 wherein the notch mirror treatment has a higher reflectivity for an S polarized incident light.

8. the head mounted display of claim 1 wherein the notch mirror treatment has a reflectivity that is insensitive to the polarization of an incident light.

9. The head mounted display of claim 1 further comprising multiple optical elements and wherein the distance between adjacent optical elements can be adjusted to change the focus distance of the displayed image.

10. The head mounted display of claim 9 wherein a sensor is provided to measure the distance between the adjacent optical elements as the focus distance is adjusted.

11. The head mounted display of claim 10 wherein the displayed image is digitally modified before being displayed to compensate for changes in size of the displayed image associated with the change in focus distance.

12. The head mounted display of claim 1 wherein the notch mirror treatment is a coating.

13. The head mounted display of claim 1 wherein the notch mirror treatment is a film.

14. The head mounted display of claim 1 wherein the notch mirror treatment is a phase matched nano-structure.