Dynamic Dimming Layer for AR Display Light Superposition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In augmented reality (AR) systems, ambient light from the physical environment can interfere with computer-generated content, degrading the AR experience by limiting contrast and introducing unwanted color compositions.
Innovation Solution
An electronic device with a translucent display senses light superposition characteristic values from the ambient light and determines display correction values based on these values and predetermined display characteristics of computer-generated reality (CGR) objects. The device then adjusts its display operating parameters to optimize the rendering and display of CGR objects, ensuring they appear as intended within a performance threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a physical fixed dimming layer is integrated with a translucent display to block light from the physical environment, then the contrast between the physical environment and displayed computer-generated content is improved, but the display displays a constantly darker version of the user's physical environment, degrading the user's experience and preventing use in low light situations
Solution Approach 1:
The patent applies a dynamic dimming layer that can change its light-blocking properties in real-time based on ambient lighting conditions. The layer transitions between transparent and opaque states to adapt to varying light environments, allowing the display to maintain contrast enhancement while preserving visibility in low light situations, thus resolving the contradiction between blocking light interference and maintaining usability.
Solution Approach 2:
The patent changes the optical parameters of the dimming layer dynamically. By adjusting the light transmission properties of the dimming layer based on ambient light detection, the system optimizes contrast for computer-generated content while maintaining physical environment visibility. This parameter adjustment allows the display to adapt between different lighting conditions, resolving the contradiction between contrast enhancement and low-light usability.
2Adaptability or versatility
If additive display methods are used to composite computer-generated content with the physical environment, then the display can show computer-generated content, but light from the physical environment interferes with the color composition of displayed content by providing dominant hues that are difficult to mask
Solution Approach 1:
The patent introduces a dimming layer as an intermediary element between the physical environment and the display. This layer acts as a mediator that selectively blocks ambient light while allowing computer-generated content to pass through, thereby reducing color interference from the physical environment and maintaining color composition flexibility for the displayed content.
Solution Approach 2:
The system performs preliminary action by detecting ambient light conditions and activating the dimming layer before computer-generated content is displayed. This preliminary blocking of ambient light prevents dominant hues from interfering with the color composition of the displayed content, ensuring color accuracy and flexibility without requiring complex real-time color correction.
Data Source
AI summary
In various implementations, a method is performed at an electronic device including one or more processors, a non-transitory memory, and a see-through display. The method includes obtaining a light superposition characteristic value associated with ambient light from a physical environment that enters the see-through display. The method includes obtaining a perceptual appearance value that characterizes the light superposition characteristic value. The method includes determining a display correction value associated with the electronic device based on the light superposition characteristic value, a predetermined display characteristic of a computer-generated reality (CGR) object, and the perceptual appearance value. The method includes changing one or more display operating parameters associated with the electronic device in accordance with the display correction value in order to satisfy the predetermined display characteristic of the CGR object within a performance threshold.