Wearable Display Adjustment via Ambient Light Feedback
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Solution Overview
Problem
Existing wearable display devices face issues with user experience due to varying surrounding brightness affecting image clarity, as pupils adjust to avoid excessive light entry, leading to dim or bright images.
Innovation Solution
A wearable display device with an optical sensing module to sense ambient light intensity, adjusting display light beam brightness and/or light transmitting element transmittance via a control unit to maintain optimal display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the brightness of the display light beam remains unchanged, then the device structure is simple, but the image clarity deteriorates when surrounding brightness changes
Solution Approach 1:
The patent implements dynamic brightness adjustment by introducing an optical sensing module that detects ambient light intensity and a control unit that automatically adjusts the brightness of the display light beam based on the detected conditions. This transforms the static display system into a dynamic one that adapts to changing environmental light conditions, resolving the contradiction between simple device structure and maintained image clarity.
Solution Approach 2:
The patent establishes a feedback control loop where the optical sensing module continuously monitors ambient light intensity and provides feedback to the control unit, which then adjusts the display light beam brightness accordingly. This closed-loop feedback mechanism ensures image clarity is maintained without requiring complex manual intervention, balancing device simplicity with display quality.
2Illumination intensity
If the brightness of the display light beam is increased to compensate for dim ambient light, then image clarity is maintained, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts brightness based on real-time ambient light conditions detected by the optical sensing module. Instead of maintaining high brightness continuously, the system only increases brightness when ambient light is dim, and reduces brightness when ambient light is sufficient, thereby maintaining image clarity while optimizing energy consumption.
Solution Approach 2:
The patent changes the brightness parameter of the display light beam based on ambient light conditions. By adjusting this parameter dynamically rather than keeping it constant at high levels, the system maintains image clarity when needed while reducing energy consumption during periods of sufficient ambient light.
3Use of energy by moving object
If manual adjustment of display brightness is provided, then energy consumption can be optimized, but user operation complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the optical sensing module automatically detects ambient light conditions and the control unit automatically adjusts the display brightness without requiring user intervention. This eliminates the need for manual operation while optimizing energy consumption, resolving the contradiction between energy efficiency and ease of operation.
Solution Approach 2:
The automatic feedback control loop continuously monitors ambient light and adjusts brightness without user input, eliminating manual operation complexity while maintaining energy optimization. The system self-regulates based on environmental conditions, providing both energy efficiency and operational simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Automatically adjusts brightness and transmittance to improve user experience by maintaining clear images across varying light conditions, preventing overheating, and enhancing safety.
Implementation Method 1
The optical sensing module is disposed on a side of the light transmitting element and is configured to sense an intensity of an ambient light passing through the light transmitting element to obtain a light intensity signal
Data Source
AI summary
An adjustment method of a wearable display device includes steps of providing a display light beam to a light transmitting element to form an image, sensing an intensity of an ambient light to obtain a light intensity signal, and adjusting a brightness of the display light beam and/or a transmittance of the light transmitting element according to the light intensity signal. The adjustment method maintains good display effect of the wearable display device and improve user experience.