Smartglasses Calibration Case with Optical Alignment
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Solution Overview
Problem
Augmented reality smartglasses devices face display misalignment issues due to frame deformations, which can cause user discomfort, especially when the frames flex or warp over time, making it challenging to maintain accurate display alignment while the user is wearing the device.
Innovation Solution
A case for smartglasses devices equipped with an optical device, such as a mirror or cameras, that forms an image of a test pattern on both displays, allowing the processing circuitry to determine transformations (rotation and translation) to align the displays, thereby reducing vertical misalignment when the device is stored, ensuring proper alignment before use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the smartglasses device is worn during display calibration, then real-time alignment correction is possible, but user discomfort occurs due to misaligned displays
Solution Approach 1:
The system performs display calibration in advance while the device is stored in the case, before the user wears the smartglasses. The optical device captures images of test patterns displayed on both displays, and the processing circuitry determines transformations to align the displays. This preliminary calibration ensures displays are properly aligned before use, preventing user discomfort during wearing.
2Ease of operation
If frame deformations are allowed for user comfort, then display alignment deteriorates over time
Solution Approach 1:
The system uses an optical device to capture images of test patterns displayed on both displays. The processing circuitry analyzes these images to detect misalignment caused by frame deformations and automatically determines transformation corrections. This feedback loop continuously monitors and corrects display alignment, compensating for frame deformations while maintaining user comfort.
Solution Approach 2:
The system dynamically adjusts display parameters by applying transformations (rotation and translation) to the pixel coordinates of one or both displays based on detected misalignment. These parameter changes correct the display alignment without requiring physical adjustment of the frame or display components.
3Measurement precision
If calibration is performed while wearing the device, then real-time correction is achieved, but calibration complexity increases
Solution Approach 1:
The smartglasses device performs calibration autonomously using its own display components and integrated camera. The processing circuitry automatically captures images of test patterns, analyzes misalignment, and applies corrections without requiring external calibration equipment or user intervention. This self-service approach simplifies the calibration process while maintaining high precision.
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
The solution effectively calibrates the smartglasses displays before the user wears them, preventing misalignment and associated discomfort, by determining and applying necessary transformations to align the test patterns in both displays, thus ensuring accurate and comfortable user experience.
Implementation Method 1
The case includes a mirror that is configured to reflect light from a test pattern formed in the first display and the second display
Data Source
AI summary
Techniques include performing a display calibration while a smartglasses device is stored in a case that enables the smartglasses device to perform display calibrations. The case includes an optical device configured to form an image of a test pattern formed in a first display and a second display of the smartglasses device.