Compact optics with reduced chromatic aberrations

• US 10,222,618 B2
• Filed: 12/16/2015
• Issued: 03/05/2019
• 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., Bietry, Joseph
• Primary Examiner(s): Martinez, Joseph P
• Application Number:
  US14/970,653
• Publication Number:
  US 20160274361A1
• Time in Patent Office: 1,175 Days
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0116 comprising devices for correcting chromatic aberration
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0123 comprising devices increasing the field of view
• CPC Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• 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 2027/0141 characterised by the informative content of the display
• 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 2027/0159 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 2027/0181 Adaptation to the pilot/driver
• CPC Class Codes: G02B 2027/0185 Displaying image at variable distance
• 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 27/0018 with means for preventing ghost images anti-reflection coatings G02B1/11
• CPC Class Codes: G02B 27/0075 with means for altering, e.g. increasing, the depth of field or depth of focus
• 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 27/017 : 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 27/0927 : Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
• 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 5/28 : Interference filters
• CPC Class Codes: G02B 5/30 : Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 5/3025 : Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state G02B5/3008, G02B5/3016 take precedence
• CPC Class Codes: G02B 5/3083 : Birefringent or phase retarding elements G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001
• CPC Class Codes: G06F 3/011 : Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• 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: G09G 2310/0235 : Field-sequential colour display
• CPC Class Codes: G09G 3/3208 : organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H05B 45/10 : Controlling the intensity of the light
• CPC Class Codes: H05B 45/12 : using optical feedback
• CPC Class Codes: H05B 45/20 : Controlling the colour of the light

Abstract

Disclosed here in is a method of adjusting a tunable illuminating light source with a reflective display for a head mounted display to reduce chromatic artifacts in an image provided to a user'"'"'s eye. The method includes identifying a color associated with a chromatic-related artifact in a displayed image and adjusting the tunable illuminating light source to reduce the brightness of the color associated with the chromatic-related artifact.

Claims

1. A head-worn computer, comprising:

an illumination system comprising two or more different colored illumination sources, wherein the illumination system provides illumination to a reflective display along an illumination optical path; and

a diffractive lens in the illumination optical path to provide positive power to the illumination;

the reflective display positioned to provide image light to a see-through computer display of the head-worn computer, wherein at least one of the two or more different colored illumination sources is power regulated

to reduce a brightness of a color associated with chromatic-related artifact in the image light.

2. The head-worn computer of claim 1, wherein the two or more different colored illumination sources comprise two or more LEDs.

3. The head-worn computer of claim 1, wherein the chromatic-related artifact is lateral color.

4. The head-worn computer of claim 1, wherein the chromatic-related artifact is a diffractive artifact associated with a lower diffractive order.

5. The head-worn computer of claim 1, wherein the illumination system provides sequential color illumination to the reflective display.

6. The head-worn computer of claim 1, wherein the illumination system provides non-sequential illumination of the reflective display.