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CN-116560088-B - System and method for external light management

CN116560088BCN 116560088 BCN116560088 BCN 116560088BCN-116560088-B

Abstract

An augmented reality system includes a light source that generates a virtual beam that carries information for a virtual object. The system also includes a light guiding optical element that allows a first portion of the first real world light beam to pass therethrough, wherein the virtual light beam enters the light guiding optical element and propagates through the light guiding optical element and exits the light guiding optical element by substantially Total Internal Reflection (TIR). The system further includes a lens disposed adjacent to and external to the surface of the light guide optical element, the lens including a light modulation mechanism to absorb a second portion of the real world light beam and to allow the first portion of the real world light beam to pass through the lens.

Inventors

  • A.I. Russell

Assignees

  • 奇跃公司

Dates

Publication Date
20260505
Application Date
20190913
Priority Date
20180914

Claims (20)

  1. 1. A head-mounted device, comprising: A frame configured to be worn around a head of a user of the head-mounted device; A controllable dimming component physically coupled to the frame to be positioned between the user's eyes and the user's environment when the user wears the headset, Wherein the controllable dimming component comprises a first electrode component comprising a first electrode having a first dimming pattern, a second electrode component comprising a second electrode having a second dimming pattern different from the first dimming pattern, a first polarizer, a second polarizer, and a liquid crystal layer, wherein the first electrode component and the second electrode component are disposed between the first polarizer and the second polarizer, and the liquid crystal layer is disposed between the first electrode component and the second electrode component, wherein the controllable dimming component is configured to exhibit an opacity level that varies from a first opacity level to a second opacity level according to a position on the controllable dimming component, and A control circuit electrically coupled to the first and second electrodes of the controllable dimming component, wherein the control circuit is configured to apply one or more electrical signals to the first and second electrodes to generate an electric field between the first and second electrode components and adjust one or both of the first and second opacity levels, Wherein at least one of the first polarizer and the second polarizer is configured to apply a spatially varying degree of polarization to light passing therethrough.
  2. 2. The device of claim 1, wherein the controllable dimming component is configured to: presenting the first level of opacity at a first location on the controllable dimming component, and Exhibiting a level of opacity that varies as a function of distance from the first location on the controllable dimming component.
  3. 3. The device of claim 2, wherein the controllable dimming component is configured to exhibit the second level of opacity at a second location on the controllable dimming component, the second location being different from the first location.
  4. 4. The apparatus of claim 2, wherein the first location corresponds to a set of one or more points along at least a portion of an outer perimeter of the controllable dimming component.
  5. 5. The apparatus of claim 3, wherein the second position corresponds to a set of one or more points along at least a portion of an outer perimeter of the controllable dimming component.
  6. 6. The apparatus of claim 2, wherein the first position corresponds to a position within an interior region of the controllable dimming component.
  7. 7. The apparatus of claim 6, wherein the location within the interior region of the controllable dimming component corresponds to a center of the controllable dimming component.
  8. 8. The apparatus of claim 1, wherein the first opacity level represents a globally minimum opacity level and the second opacity level represents a globally maximum opacity level.
  9. 9. The device of claim 1, wherein the controllable dimming component is configured to exhibit a level of opacity that varies linearly, exponentially, or logarithmically depending on a position on the controllable dimming component.
  10. 10. The device of claim 1, wherein the controllable dimming component is configured such that the first and second opacity levels vary based on a voltage level of one or more electrical signals applied as an input to the controllable dimming component.
  11. 11. The device of claim 10, wherein the controllable dimming component is configured such that the first and second opacity levels vary at different rates as the voltage level varies.
  12. 12. The apparatus of claim 1, wherein the controllable dimming component is configured to generate an electric field between the first electrode component and the second electrode component that exhibits spatially varying electric field strength levels to generate the electric field between the first electrode component and the second electrode component.
  13. 13. The apparatus of claim 1, wherein one or both of the first electrode assembly and the second electrode assembly are configured such that one or more characteristics thereof are spatially varying.
  14. 14. The apparatus of claim 1, wherein the control circuit comprises one or more of a voltage divider network, a conductor, a processor, and a power supply.
  15. 15. The device of claim 1, wherein the controllable dimming component is physically coupled to the frame to be positioned between the user's two eyes and the user's environment when the user wears the headset.
  16. 16. The device of claim 1, wherein the control circuit is further configured to: receiving input from a data source, and One or more electrical signals are applied to the controllable dimming component to adjust at least one of the first and second opacity levels based on input received from the data source.
  17. 17. The device of claim 16, wherein the data source comprises a sensing device.
  18. 18. The device of claim 16, wherein the data source comprises a user interface component, a display system component, a network accessible resource, or a combination thereof.
  19. 19. The device of claim 1, wherein the control circuit is further configured to: receiving input from a plurality of data sources, an One or more electrical signals are applied to a single controllable dimming component to adjust at least one of the first and second opacity levels based on inputs received from the plurality of data sources.
  20. 20. The device of claim 19, wherein the plurality of data sources comprises one or more of a user interface component, a display system component, a network accessible resource, and a sensing device.

Description

System and method for external light management The application is a divisional application of China patent application No. 201980059908.0, "a system and a method for external light management" (application date is 2019, 9, 13). Cross Reference to Related Applications The present utility model claims priority from U.S. provisional patent application serial No. 62/731,755 entitled "SYSTEMS AND METHODS FOR EXTERNAL LIGHT MANAGEMENT (systems and methods for external light management)" filed on 9.14 in 2018, the contents of which are expressly and fully incorporated herein by reference in their entirety. The present utility model relates to U.S. patent application Ser. No. 15/479,700 entitled "SYSTEM AND METHOD FOR AUGMENTED REALITY (systems and METHODS for augmented reality)" filed by attorney docket No. 5 at 4.2017, U.S. patent application Ser. No. 14/331,218 entitled "PLANAR WAVEGUIDE APPARATUS WITH DIFFRACTION ELEMENT (S) AND SYSTEM EMPLOYING SAME (planar waveguide device with diffraction element and systems thereof)" filed by attorney docket No. 14/20020.00 at 14.2014, U.S. patent application Ser. No. 14/555,585 entitled "VIRTUAL AND AUGMENTED REALITY SYSTEMS AND METHODS (virtual and augmented reality systems and METHODS)" filed by attorney docket No. 15/20020.00 at 27 at 11.2014, U.S. patent application Ser. No. 14/726,424, entitled "METHODS AND SYSTEMS FOR VIRTUAL AND AUGMENTED REALITY (METHODS and systems for virtual and augmented reality)" filed at 29, 5, month 2015, U.S. patent application Ser. No. 14/726,429, entitled "METHODS AND SYSTEMS FOR CREATING FOCAL PLANES IN VIRTUAL AND AUGMENTED REALITY (METHODS and systems for creating focal planes in virtual and augmented reality)" filed at 29, 5, month 29, month 2015, entitled ""METHODS AND SYSTEMS FOR DISPLAYING STEREOSCOPY WITH A FREEFORM OPTICAL SYSTEM WITH ADDRESSABLE FOCUS FOR VIRTUAL AND AUGMENTED REALITY( for free form optical systems with addressable foci for virtual reality and augmented reality," U.S. patent application Ser. No. 14/726,396, U.S. provisional patent application Ser. No. 62/702,212, entitled "SYSTEMS AND METHODS FOR EXTERNAL LIGHT MANAGEMENT (System and method FOR external light management)" filed on 7.23.2018, and U.S. patent application Ser. No. 16/557,706, entitled "SPATIALLY-RESOLVED DYNAMIC DIMMING FOR AUGMENTED REALITY DEVICE (spatial resolution dynamic dimming FOR AUGMENTED reality device) filed on 8.30.2019. the content of the aforementioned patent application is expressly and fully incorporated by reference herein in its entirety. Background Modern computing and display technology has prompted the development of systems for so-called "augmented reality" experiences, in which digitally rendered images or portions thereof are presented to a user in a manner that appears or may be perceived as authentic. Augmented reality or "AR" scenes typically involve the presentation of digital or virtual image information as an enhancement to the visualization of the real world around the user (i.e., transparent to other real world visual inputs). Thus, AR scenes involve the presentation of digital or virtual image information that has transparency to other real-world visual inputs. The human visual perception system is very complex, and therefore, it is challenging to create an AR technology to promote the presentation of comfortable natural feeling and rich virtual image elements, as well as other virtual or real world image elements. The visual center of the brain obtains valuable sensory information from the movements of the two eyes and their components relative to each other. The vergence (vergence) movement of the two eyes relative to each other (i.e., the rolling movement of the pupils toward or away from each other to converge (cover) the eye's line of sight to be fixed on the subject) is closely related to the focusing (or "accommodation") of the eyes' lenses. Under normal circumstances, changing the focus of the lens of the eye or adjusting the eye to focus on objects at different distances will automatically result in a matching change in vergence to the same distance under a relationship known as "accommodation-vergence reflection". Also, under normal conditions, a change in vergence will trigger a change in the adjusted match. As with most conventional stereoscopic AR configurations, operating on such reflections can result in user eye strain, headache, or other forms of discomfort. Stereoscopic wearable eyewear typically has two displays for the left and right eyes configured to display images with slightly different elemental presentations so that the human visual system can perceive three-dimensional stereoscopic. It has been found that this configuration is uncomfortable for many users due to the mismatch between vergence and accommodation ("vergence-accommodation conflict") that must be overcome to perceive a three-dimensional image. Indeed, some AR users cannot tolerate stereoscopic configurations. Thus, most con